Earth Science Frontiers ›› 2022, Vol. 29 ›› Issue (2): 416-430.DOI: 10.13745/j.esf.sf.2021.10.50
Special Issue: 印度-欧亚大陆碰撞及其远程效应
FU Shun1,3(), ZHAO Yingquan2,*(
), WANG Jinjun4, YU Yu2, ZHU Yingtang5, FU Xingzhe6
Received:
2021-10-25
Revised:
2022-02-10
Online:
2022-03-25
Published:
2022-03-31
Contact:
ZHAO Yingquan
CLC Number:
FU Shun, ZHAO Yingquan, WANG Jinjun, YU Yu, ZHU Yingtang, FU Xingzhe. Continent-continent collision at the southwestern margin of the Cretaceous Qiangtang terrane: Constraints from granite in the western Bangong-Nujiang Suture Zone[J]. Earth Science Frontiers, 2022, 29(2): 416-430.
Fig.3 Field photos and photomicrographs of rock mass in the Bangong Lake - Nujiang belt. a—Fine-grained granodiorite in Xiongbari; b— Fine-grained granodiorite (×25, -). c—Fine-grained granodiorite (×25, +); d—Fine-grained granodiorite with zonal structure (×50, +); e—Granodiorite porphyry (×25, -); f—Granodiorite porphyry (×25, +).
岩性 | 主要特征 | 同位素年龄/Ma |
---|---|---|
肉红色石英二长斑岩 | 侵入体呈近椭圆状小岩株,北东向产出,侵入于下—中侏罗统曲色组中,围岩具角岩化,外接触带宽约20~50 m | |
肉红色中细粒二长花岗岩 | 小岩株,呈北东向,侵入于下—中侏罗统曲色组,围岩具角岩化,出现角岩化砂岩、透辉石长英角岩 | |
肉红色花岗斑岩 | 多呈北东向小岩株或岩枝,侵入于下—中侏罗统曲色组、色哇组中,围岩具角岩化 | 113.7±2.1(U-Pb)查楚幅布木错南东 |
肉红色细粒花岗闪长岩 | 平面形态呈不规则的纺锤状、椭圆状岩基及岩株,岩体呈近北西、东西向展布,侵入于中二叠统龙格组上段、下—中侏罗统曲色组 | 116.2±3.6(U-Pb)野马沟幅雄巴日北 112.63±0.78(U-Pb)野马沟幅雄巴日 |
肉红色花岗闪长斑岩 | 平面形态呈不规则布袋状,岩体呈近东西向展布,面积>2 km2,侵入于中侏罗统色哇组碎屑岩夹灰岩中,外接触带宽约400~500 m | 113±0.43(U-Pb)查楚幅布木错北 |
灰色石英二长闪长玢岩 | 呈椭圆状小岩株,北延出调查区,侵入于下—中二叠统吞龙共巴组 | |
灰色二长闪长玢岩 | 呈纺锤状小岩株,总面积1.2 km2,侵入于中二叠统龙格组下段,围岩具明显的大理岩化,夕卡岩化,外接触带宽约500~1 000 m | |
灰色细粒石英闪长岩 | 形似侧卧的盾形,呈近东西向,侵入于中侏罗统色哇组 | |
灰色石英闪长玢岩 | 呈长条状岩基、椭圆状小岩株,北东向或北西向,侵入于下—中侏罗统曲色组 | 107±0.13(U-Pb)拉木卓幅赛登 |
深灰色中细粒闪长岩 | 形似纺锤状、弯月状,呈北西-南东向展布或无方向性,侵入于中二叠统龙格组上段、中侏罗统色哇组,并被早白垩世花岗闪长斑岩侵入 | |
灰色闪长玢岩 | 呈圆状或椭圆状小岩株产出,单个侵入体呈近东西向-北东东向,侵入于下—中侏罗统曲色组碎屑岩中,与围岩的接触面呈波状弯曲,外倾,外接触带发育宽约最大50 cm的角岩化带。内接触带见20 cm±的细粒化边,环绕岩体分布 |
Table 1 Characteristics and chronology statistics of Early Cretaceous intrusive rocks in the study area
岩性 | 主要特征 | 同位素年龄/Ma |
---|---|---|
肉红色石英二长斑岩 | 侵入体呈近椭圆状小岩株,北东向产出,侵入于下—中侏罗统曲色组中,围岩具角岩化,外接触带宽约20~50 m | |
肉红色中细粒二长花岗岩 | 小岩株,呈北东向,侵入于下—中侏罗统曲色组,围岩具角岩化,出现角岩化砂岩、透辉石长英角岩 | |
肉红色花岗斑岩 | 多呈北东向小岩株或岩枝,侵入于下—中侏罗统曲色组、色哇组中,围岩具角岩化 | 113.7±2.1(U-Pb)查楚幅布木错南东 |
肉红色细粒花岗闪长岩 | 平面形态呈不规则的纺锤状、椭圆状岩基及岩株,岩体呈近北西、东西向展布,侵入于中二叠统龙格组上段、下—中侏罗统曲色组 | 116.2±3.6(U-Pb)野马沟幅雄巴日北 112.63±0.78(U-Pb)野马沟幅雄巴日 |
肉红色花岗闪长斑岩 | 平面形态呈不规则布袋状,岩体呈近东西向展布,面积>2 km2,侵入于中侏罗统色哇组碎屑岩夹灰岩中,外接触带宽约400~500 m | 113±0.43(U-Pb)查楚幅布木错北 |
灰色石英二长闪长玢岩 | 呈椭圆状小岩株,北延出调查区,侵入于下—中二叠统吞龙共巴组 | |
灰色二长闪长玢岩 | 呈纺锤状小岩株,总面积1.2 km2,侵入于中二叠统龙格组下段,围岩具明显的大理岩化,夕卡岩化,外接触带宽约500~1 000 m | |
灰色细粒石英闪长岩 | 形似侧卧的盾形,呈近东西向,侵入于中侏罗统色哇组 | |
灰色石英闪长玢岩 | 呈长条状岩基、椭圆状小岩株,北东向或北西向,侵入于下—中侏罗统曲色组 | 107±0.13(U-Pb)拉木卓幅赛登 |
深灰色中细粒闪长岩 | 形似纺锤状、弯月状,呈北西-南东向展布或无方向性,侵入于中二叠统龙格组上段、中侏罗统色哇组,并被早白垩世花岗闪长斑岩侵入 | |
灰色闪长玢岩 | 呈圆状或椭圆状小岩株产出,单个侵入体呈近东西向-北东东向,侵入于下—中侏罗统曲色组碎屑岩中,与围岩的接触面呈波状弯曲,外倾,外接触带发育宽约最大50 cm的角岩化带。内接触带见20 cm±的细粒化边,环绕岩体分布 |
填图单位 | 样品编号 | wB/% | ||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SiO2 | Al2O3 | Fe2O3 | FeO | P2O5 | H2O- | H2O+ | LOI | K2O | Na2O | CaO | MgO | TiO2 | MnO | |||||||||||||||||||||||||||||
K1ηγ | P5TW7-1 | 72.42 | 12.85 | 1.05 | 0.61 | 0.073 | 0.26 | 0.72 | 1.76 | 4.84 | 2.75 | 2.11 | 0.62 | 0.128 | 0.051 | |||||||||||||||||||||||||||
4159a | 63.80 | 14.15 | 2.16 | 3.24 | 0.099 | 0.31 | 1.54 | 1.82 | 3.41 | 2.55 | 4.08 | 3.54 | 0.551 | 0.124 | ||||||||||||||||||||||||||||
4159b | 64.58 | 14.45 | 1.61 | 3.40 | 0.089 | 0.26 | 1.29 | 1.52 | 3.21 | 2.85 | 4.18 | 3.39 | 0.572 | 0.133 | ||||||||||||||||||||||||||||
K1γπ | L0985-11 | 65.68 | 13.95 | 1.33 | 2.19 | 0.123 | 0.40 | 2.00 | 4.70 | 2.58 | 2.97 | 3.33 | 1.81 | 0.273 | 0.076 | |||||||||||||||||||||||||||
L0985-12 | 68.04 | 15.10 | 1.42 | 2.02 | 0.124 | 0.26 | 2.15 | 3.20 | 2.72 | 3.14 | 1.12 | 2.00 | 0.295 | 0.085 | ||||||||||||||||||||||||||||
4155a | 66.26 | 13.70 | 1.26 | 4.53 | 0.117 | 0.12 | 1.56 | 1.38 | 2.49 | 2.33 | 3.48 | 3.19 | 0.577 | 0.101 | ||||||||||||||||||||||||||||
4152a | 72.46 | 14.05 | 1.53 | 0.89 | 0.052 | 0.12 | 0.90 | 0.97 | 4.51 | 3.24 | 0.62 | 0.59 | 0.199 | 0.052 | ||||||||||||||||||||||||||||
4152f | 73.78 | 13.20 | 1.25 | 0.65 | 0.041 | 0.15 | 0.75 | 1.34 | 4.30 | 3.23 | 0.68 | 0.48 | 0.148 | 0.057 | ||||||||||||||||||||||||||||
4168a | 71.28 | 14.35 | 1.07 | 1.62 | 0.079 | 0.15 | 0.75 | 0.78 | 4.43 | 3.09 | 1.57 | 0.89 | 0.285 | 0.076 | ||||||||||||||||||||||||||||
4168c | 70.94 | 14.55 | 1.17 | 1.38 | 0.065 | 0.23 | 0.92 | 0.94 | 4.53 | 3.04 | 1.26 | 0.82 | 0.278 | 0.068 | ||||||||||||||||||||||||||||
K1γδ | L0875Tw1 | 57.75 | 13.30 | 2.14 | 5.18 | 0.213 | 0.76 | 3.31 | 4.26 | 2.28 | 2.33 | 5.86 | 5.41 | 0.731 | 0.172 | |||||||||||||||||||||||||||
L1810GS-1 | 65.92 | 14.30 | 2.21 | 2.35 | 0.101 | 0.21 | 1.31 | 1.64 | 2.25 | 3.44 | 4.00 | 2.34 | 0.419 | 0.101 | ||||||||||||||||||||||||||||
1863a | 66.64 | 15.15 | 2.07 | 2.19 | 0.091 | 0.41 | 1.28 | 1.90 | 2.25 | 3.31 | 3.49 | 2.38 | 0.387 | 0.086 | ||||||||||||||||||||||||||||
K1γδπ | D0255Y1 | 62.98 | 14.35 | 0.67 | 1.13 | 0.238 | 0.36 | 0.68 | 2.88 | 4.23 | 2.59 | 7.96 | 2.75 | 0.683 | 0.036 | |||||||||||||||||||||||||||
L0200a | 60.74 | 14.50 | 1.43 | 4.05 | 0.210 | 0.33 | 2.25 | 3.56 | 3.60 | 2.65 | 4.50 | 3.00 | 0.670 | 0.125 | ||||||||||||||||||||||||||||
K1δο | L2015GS.XT.DY.TW1 | 62.64 | 16.10 | 1.54 | 1.21 | 0.119 | 0.25 | 0.81 | 1.26 | 0.44 | 3.18 | 9.02 | 2.86 | 0.529 | 0.125 | |||||||||||||||||||||||||||
L2015GS.XT.DY.TW2 | 62.00 | 15.65 | 1.26 | 1.21 | 0.106 | 0.26 | 0.80 | 2.50 | 0.38 | 3.22 | 9.11 | 2.91 | 0.544 | 0.124 | ||||||||||||||||||||||||||||
K1δομ | P5 7-2 | 68.44 | 14.40 | 1.83 | 1.39 | 0.113 | 0.57 | 2.25 | 2.70 | 2.90 | 3.08 | 1.93 | 2.15 | 0.286 | 0.059 | |||||||||||||||||||||||||||
P7Gs-1 | 64.22 | 14.15 | 1.74 | 1.82 | 0.136 | 0.54 | 2.09 | 3.96 | 2.5 | 4.86 | 3.11 | 2.14 | 0.367 | 0.096 | ||||||||||||||||||||||||||||
5561a | 66.08 | 15.75 | 2.51 | 2.59 | 0.111 | 0.14 | 1.72 | 3.26 | 1.84 | 2.81 | 2.37 | 2.16 | 0.332 | 0.147 | ||||||||||||||||||||||||||||
K1δμ | P4Tw23-1 | 58.88 | 9.80 | 0.96 | 4.77 | 0.126 | 0.24 | 2.39 | 9.16 | 1.62 | 1.22 | 8.42 | 3.62 | 0.387 | 0.142 | |||||||||||||||||||||||||||
L0550Tw1 | 63.62 | 14.30 | 1.51 | 4.37 | 0.125 | 0.29 | 2.74 | 2.78 | 2.65 | 2.59 | 3.17 | 3.50 | 0.658 | 0.139 |
Table 2 Petrochemical compositions of Early Cretaceous intrusive rocks
填图单位 | 样品编号 | wB/% | ||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SiO2 | Al2O3 | Fe2O3 | FeO | P2O5 | H2O- | H2O+ | LOI | K2O | Na2O | CaO | MgO | TiO2 | MnO | |||||||||||||||||||||||||||||
K1ηγ | P5TW7-1 | 72.42 | 12.85 | 1.05 | 0.61 | 0.073 | 0.26 | 0.72 | 1.76 | 4.84 | 2.75 | 2.11 | 0.62 | 0.128 | 0.051 | |||||||||||||||||||||||||||
4159a | 63.80 | 14.15 | 2.16 | 3.24 | 0.099 | 0.31 | 1.54 | 1.82 | 3.41 | 2.55 | 4.08 | 3.54 | 0.551 | 0.124 | ||||||||||||||||||||||||||||
4159b | 64.58 | 14.45 | 1.61 | 3.40 | 0.089 | 0.26 | 1.29 | 1.52 | 3.21 | 2.85 | 4.18 | 3.39 | 0.572 | 0.133 | ||||||||||||||||||||||||||||
K1γπ | L0985-11 | 65.68 | 13.95 | 1.33 | 2.19 | 0.123 | 0.40 | 2.00 | 4.70 | 2.58 | 2.97 | 3.33 | 1.81 | 0.273 | 0.076 | |||||||||||||||||||||||||||
L0985-12 | 68.04 | 15.10 | 1.42 | 2.02 | 0.124 | 0.26 | 2.15 | 3.20 | 2.72 | 3.14 | 1.12 | 2.00 | 0.295 | 0.085 | ||||||||||||||||||||||||||||
4155a | 66.26 | 13.70 | 1.26 | 4.53 | 0.117 | 0.12 | 1.56 | 1.38 | 2.49 | 2.33 | 3.48 | 3.19 | 0.577 | 0.101 | ||||||||||||||||||||||||||||
4152a | 72.46 | 14.05 | 1.53 | 0.89 | 0.052 | 0.12 | 0.90 | 0.97 | 4.51 | 3.24 | 0.62 | 0.59 | 0.199 | 0.052 | ||||||||||||||||||||||||||||
4152f | 73.78 | 13.20 | 1.25 | 0.65 | 0.041 | 0.15 | 0.75 | 1.34 | 4.30 | 3.23 | 0.68 | 0.48 | 0.148 | 0.057 | ||||||||||||||||||||||||||||
4168a | 71.28 | 14.35 | 1.07 | 1.62 | 0.079 | 0.15 | 0.75 | 0.78 | 4.43 | 3.09 | 1.57 | 0.89 | 0.285 | 0.076 | ||||||||||||||||||||||||||||
4168c | 70.94 | 14.55 | 1.17 | 1.38 | 0.065 | 0.23 | 0.92 | 0.94 | 4.53 | 3.04 | 1.26 | 0.82 | 0.278 | 0.068 | ||||||||||||||||||||||||||||
K1γδ | L0875Tw1 | 57.75 | 13.30 | 2.14 | 5.18 | 0.213 | 0.76 | 3.31 | 4.26 | 2.28 | 2.33 | 5.86 | 5.41 | 0.731 | 0.172 | |||||||||||||||||||||||||||
L1810GS-1 | 65.92 | 14.30 | 2.21 | 2.35 | 0.101 | 0.21 | 1.31 | 1.64 | 2.25 | 3.44 | 4.00 | 2.34 | 0.419 | 0.101 | ||||||||||||||||||||||||||||
1863a | 66.64 | 15.15 | 2.07 | 2.19 | 0.091 | 0.41 | 1.28 | 1.90 | 2.25 | 3.31 | 3.49 | 2.38 | 0.387 | 0.086 | ||||||||||||||||||||||||||||
K1γδπ | D0255Y1 | 62.98 | 14.35 | 0.67 | 1.13 | 0.238 | 0.36 | 0.68 | 2.88 | 4.23 | 2.59 | 7.96 | 2.75 | 0.683 | 0.036 | |||||||||||||||||||||||||||
L0200a | 60.74 | 14.50 | 1.43 | 4.05 | 0.210 | 0.33 | 2.25 | 3.56 | 3.60 | 2.65 | 4.50 | 3.00 | 0.670 | 0.125 | ||||||||||||||||||||||||||||
K1δο | L2015GS.XT.DY.TW1 | 62.64 | 16.10 | 1.54 | 1.21 | 0.119 | 0.25 | 0.81 | 1.26 | 0.44 | 3.18 | 9.02 | 2.86 | 0.529 | 0.125 | |||||||||||||||||||||||||||
L2015GS.XT.DY.TW2 | 62.00 | 15.65 | 1.26 | 1.21 | 0.106 | 0.26 | 0.80 | 2.50 | 0.38 | 3.22 | 9.11 | 2.91 | 0.544 | 0.124 | ||||||||||||||||||||||||||||
K1δομ | P5 7-2 | 68.44 | 14.40 | 1.83 | 1.39 | 0.113 | 0.57 | 2.25 | 2.70 | 2.90 | 3.08 | 1.93 | 2.15 | 0.286 | 0.059 | |||||||||||||||||||||||||||
P7Gs-1 | 64.22 | 14.15 | 1.74 | 1.82 | 0.136 | 0.54 | 2.09 | 3.96 | 2.5 | 4.86 | 3.11 | 2.14 | 0.367 | 0.096 | ||||||||||||||||||||||||||||
5561a | 66.08 | 15.75 | 2.51 | 2.59 | 0.111 | 0.14 | 1.72 | 3.26 | 1.84 | 2.81 | 2.37 | 2.16 | 0.332 | 0.147 | ||||||||||||||||||||||||||||
K1δμ | P4Tw23-1 | 58.88 | 9.80 | 0.96 | 4.77 | 0.126 | 0.24 | 2.39 | 9.16 | 1.62 | 1.22 | 8.42 | 3.62 | 0.387 | 0.142 | |||||||||||||||||||||||||||
L0550Tw1 | 63.62 | 14.30 | 1.51 | 4.37 | 0.125 | 0.29 | 2.74 | 2.78 | 2.65 | 2.59 | 3.17 | 3.50 | 0.658 | 0.139 |
填图单位 | 样品编号 | wB/10-6 | |||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ce | Dy | Er | Eu | Gd | Ho | La | Lu | Nd | Pr | Sm | Tb | Tm | Y | Yb | |||||||||||||||||
K1ηγ | P5TW7-1 | 21.09 | 2.37 | 1.35 | 0.50 | 1.62 | 0.46 | 10.43 | 0.25 | 9.54 | 2.30 | 2.17 | 0.31 | 0.23 | 13.98 | 1.53 | |||||||||||||||
4159a | 51.54 | 3.26 | 2.08 | 0.87 | 3.75 | 0.67 | 0.34 | 27.18 | 18.78 | 5.64 | 4.06 | 0.55 | 0.34 | 18.36 | 2.13 | ||||||||||||||||
4159b | 55.42 | 3.05 | 1.83 | 0.76 | 3.96 | 0.61 | 0.33 | 30.05 | 17.25 | 5.84 | 3.77 | 0.60 | 0.32 | 17.66 | 2.18 | ||||||||||||||||
K1γπ | L0985-11 | 43.90 | 2.11 | 1.12 | 0.70 | 2.69 | 0.38 | 24.87 | 0.18 | 18.99 | 5.04 | 3.40 | 0.37 | 0.17 | 10.74 | 1.10 | |||||||||||||||
L0985-12 | 31.32 | 1.70 | 0.91 | 0.53 | 1.92 | 0.32 | 16.24 | 0.15 | 13.36 | 3.59 | 2.43 | 0.29 | 0.15 | 8.08 | 0.95 | ||||||||||||||||
4155a | 53.79 | 3.63 | 2.23 | 1.07 | 4.20 | 0.74 | 0.35 | 27.15 | 22.37 | 6.15 | 4.56 | 0.65 | 0.36 | 19.91 | 2.37 | ||||||||||||||||
4152a | 65.13 | 3.51 | 2.14 | 0.43 | 3.46 | 0.70 | 0.34 | 31.40 | 23.58 | 6.47 | 4.10 | 0.57 | 0.35 | 17.29 | 2.29 | ||||||||||||||||
4168a | 80.36 | 3.10 | 1.73 | 0.76 | 3.76 | 0.57 | 0.32 | 43.97 | 26.12 | 8.36 | 4.37 | 0.56 | 0.28 | 16.29 | 1.89 | ||||||||||||||||
4168c | 75.73 | 3.08 | 1.84 | 0.77 | 3.90 | 0.58 | 0.30 | 45.64 | 25.44 | 7.76 | 4.48 | 0.55 | 0.30 | 15.99 | 1.94 | ||||||||||||||||
K1γδ | L0875Tw1 | 55.26 | 3.85 | 2.09 | 1.29 | 3.92 | 0.74 | 28.57 | 0.29 | 27.48 | 6.51 | 4.95 | 0.58 | 0.30 | 18.60 | 1.88 | |||||||||||||||
L1810GS-1 | 31.19 | 2.38 | 1.27 | 0.59 | 2.35 | 0.45 | 14.71 | 0.26 | 11.07 | 3.40 | 2.35 | 0.41 | 0.22 | 13.69 | 1.55 | ||||||||||||||||
1863a | 34.20 | 2.51 | 1.44 | 0.75 | 2.49 | 0.48 | 0.23 | 18.17 | 15.26 | 3.91 | 3.03 | 0.41 | 0.22 | 13.16 | 1.41 | ||||||||||||||||
K1γδπ | D0255Y1 | 59.28 | 4.72 | 2.56 | 1.25 | 4.83 | 0.88 | 23.64 | 0.41 | 25.64 | 7.11 | 5.60 | 0.80 | 0.40 | 22.85 | 2.55 | |||||||||||||||
L0200a | 75.03 | 3.81 | 2.01 | 1.37 | 4.34 | 0.69 | 0.32 | 39.66 | 30.14 | 8.23 | 5.35 | 0.68 | 0.30 | 19.60 | 2.04 | ||||||||||||||||
K1δο | L2015-1 | 16.46 | 3.16 | 1.79 | 0.73 | 2.32 | 0.63 | 7.12 | 0.32 | 9.16 | 2.20 | 2.31 | 0.46 | 0.29 | 17.63 | 1.96 | |||||||||||||||
L2015-2 | 18.25 | 3.15 | 1.77 | 0.72 | 2.36 | 0.62 | 8.08 | 0.34 | 9.65 | 2.35 | 2.31 | 0.48 | 0.29 | 18.17 | 1.95 | ||||||||||||||||
K1δομ | P5 7-2 | 46.56 | 3.13 | 1.70 | 0.86 | 3.11 | 0.59 | 23.91 | 0.27 | 21.04 | 5.63 | 4.16 | 0.52 | 0.28 | 17.50 | 1.73 | |||||||||||||||
P7Gs-1 | 47.12 | 2.65 | 1.47 | 0.84 | 2.92 | 0.50 | 25.93 | 0.28 | 16.93 | 5.13 | 3.11 | 0.46 | 0.24 | 15.16 | 1.62 | ||||||||||||||||
5561a | 26.86 | 3.38 | 2.00 | 1.05 | 3.05 | 0.69 | 0.32 | 17.76 | 15.56 | 4.10 | 3.47 | 0.54 | 0.33 | 16.82 | 2.12 | ||||||||||||||||
K1δμ | P4Tw23-1 | 45.24 | 2.94 | 1.40 | 0.74 | 2.92 | 0.51 | 22.49 | 0.24 | 19.65 | 5.22 | 3.51 | 0.48 | 0.21 | 15.67 | 1.41 | |||||||||||||||
L0550Tw1 | 57.70 | 4.35 | 2.19 | 0.98 | 3.77 | 0.80 | 27.13 | 0.35 | 29.04 | 6.82 | 4.99 | 0.65 | 0.32 | 21.93 | 1.99 |
Table 3 REE contents in Early Cretaceous intrusive rocks
填图单位 | 样品编号 | wB/10-6 | |||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ce | Dy | Er | Eu | Gd | Ho | La | Lu | Nd | Pr | Sm | Tb | Tm | Y | Yb | |||||||||||||||||
K1ηγ | P5TW7-1 | 21.09 | 2.37 | 1.35 | 0.50 | 1.62 | 0.46 | 10.43 | 0.25 | 9.54 | 2.30 | 2.17 | 0.31 | 0.23 | 13.98 | 1.53 | |||||||||||||||
4159a | 51.54 | 3.26 | 2.08 | 0.87 | 3.75 | 0.67 | 0.34 | 27.18 | 18.78 | 5.64 | 4.06 | 0.55 | 0.34 | 18.36 | 2.13 | ||||||||||||||||
4159b | 55.42 | 3.05 | 1.83 | 0.76 | 3.96 | 0.61 | 0.33 | 30.05 | 17.25 | 5.84 | 3.77 | 0.60 | 0.32 | 17.66 | 2.18 | ||||||||||||||||
K1γπ | L0985-11 | 43.90 | 2.11 | 1.12 | 0.70 | 2.69 | 0.38 | 24.87 | 0.18 | 18.99 | 5.04 | 3.40 | 0.37 | 0.17 | 10.74 | 1.10 | |||||||||||||||
L0985-12 | 31.32 | 1.70 | 0.91 | 0.53 | 1.92 | 0.32 | 16.24 | 0.15 | 13.36 | 3.59 | 2.43 | 0.29 | 0.15 | 8.08 | 0.95 | ||||||||||||||||
4155a | 53.79 | 3.63 | 2.23 | 1.07 | 4.20 | 0.74 | 0.35 | 27.15 | 22.37 | 6.15 | 4.56 | 0.65 | 0.36 | 19.91 | 2.37 | ||||||||||||||||
4152a | 65.13 | 3.51 | 2.14 | 0.43 | 3.46 | 0.70 | 0.34 | 31.40 | 23.58 | 6.47 | 4.10 | 0.57 | 0.35 | 17.29 | 2.29 | ||||||||||||||||
4168a | 80.36 | 3.10 | 1.73 | 0.76 | 3.76 | 0.57 | 0.32 | 43.97 | 26.12 | 8.36 | 4.37 | 0.56 | 0.28 | 16.29 | 1.89 | ||||||||||||||||
4168c | 75.73 | 3.08 | 1.84 | 0.77 | 3.90 | 0.58 | 0.30 | 45.64 | 25.44 | 7.76 | 4.48 | 0.55 | 0.30 | 15.99 | 1.94 | ||||||||||||||||
K1γδ | L0875Tw1 | 55.26 | 3.85 | 2.09 | 1.29 | 3.92 | 0.74 | 28.57 | 0.29 | 27.48 | 6.51 | 4.95 | 0.58 | 0.30 | 18.60 | 1.88 | |||||||||||||||
L1810GS-1 | 31.19 | 2.38 | 1.27 | 0.59 | 2.35 | 0.45 | 14.71 | 0.26 | 11.07 | 3.40 | 2.35 | 0.41 | 0.22 | 13.69 | 1.55 | ||||||||||||||||
1863a | 34.20 | 2.51 | 1.44 | 0.75 | 2.49 | 0.48 | 0.23 | 18.17 | 15.26 | 3.91 | 3.03 | 0.41 | 0.22 | 13.16 | 1.41 | ||||||||||||||||
K1γδπ | D0255Y1 | 59.28 | 4.72 | 2.56 | 1.25 | 4.83 | 0.88 | 23.64 | 0.41 | 25.64 | 7.11 | 5.60 | 0.80 | 0.40 | 22.85 | 2.55 | |||||||||||||||
L0200a | 75.03 | 3.81 | 2.01 | 1.37 | 4.34 | 0.69 | 0.32 | 39.66 | 30.14 | 8.23 | 5.35 | 0.68 | 0.30 | 19.60 | 2.04 | ||||||||||||||||
K1δο | L2015-1 | 16.46 | 3.16 | 1.79 | 0.73 | 2.32 | 0.63 | 7.12 | 0.32 | 9.16 | 2.20 | 2.31 | 0.46 | 0.29 | 17.63 | 1.96 | |||||||||||||||
L2015-2 | 18.25 | 3.15 | 1.77 | 0.72 | 2.36 | 0.62 | 8.08 | 0.34 | 9.65 | 2.35 | 2.31 | 0.48 | 0.29 | 18.17 | 1.95 | ||||||||||||||||
K1δομ | P5 7-2 | 46.56 | 3.13 | 1.70 | 0.86 | 3.11 | 0.59 | 23.91 | 0.27 | 21.04 | 5.63 | 4.16 | 0.52 | 0.28 | 17.50 | 1.73 | |||||||||||||||
P7Gs-1 | 47.12 | 2.65 | 1.47 | 0.84 | 2.92 | 0.50 | 25.93 | 0.28 | 16.93 | 5.13 | 3.11 | 0.46 | 0.24 | 15.16 | 1.62 | ||||||||||||||||
5561a | 26.86 | 3.38 | 2.00 | 1.05 | 3.05 | 0.69 | 0.32 | 17.76 | 15.56 | 4.10 | 3.47 | 0.54 | 0.33 | 16.82 | 2.12 | ||||||||||||||||
K1δμ | P4Tw23-1 | 45.24 | 2.94 | 1.40 | 0.74 | 2.92 | 0.51 | 22.49 | 0.24 | 19.65 | 5.22 | 3.51 | 0.48 | 0.21 | 15.67 | 1.41 | |||||||||||||||
L0550Tw1 | 57.70 | 4.35 | 2.19 | 0.98 | 3.77 | 0.80 | 27.13 | 0.35 | 29.04 | 6.82 | 4.99 | 0.65 | 0.32 | 21.93 | 1.99 |
填图单位 | 样品编号 | wB/10-9 | wB/10-6 | |||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Au | Ag | Sn | Ba | Be | Cd | Co | Cr | Cs | Cu | Ga | Ge | Hf | Li | Mn | Mo | Nb | ||||||||||||||||||||
K1ηγ | P5TW7-1 | 0.33 | 48 | 7.50 | 388.7 | 3.39 | 0.05 | 2.92 | 7.03 | 18.30 | 3.02 | 15.54 | 2.24 | 2.52 | 46.3 | 409 | 0.12 | 11.63 | ||||||||||||||||||
4159a | 0.48 | 33 | 3.60 | 362.2 | 1.44 | 0.04 | 15.65 | 42.95 | 8.11 | 14.07 | 13.02 | 1.30 | 3.34 | 33.42 | 742 | 0.26 | 9.50 | |||||||||||||||||||
4159b | 0.32 | 36 | 1.90 | 314.2 | 1.47 | 0.05 | 14.49 | 37.17 | 5.91 | 21.99 | 11.28 | 1.08 | 3.18 | 28.66 | 744 | 0.24 | 8.98 | |||||||||||||||||||
K1γπ | L0985-11 | 0.31 | 96 | 2.00 | 268.8 | 1.49 | 0.06 | 9.02 | 16.80 | 7.83 | 9.42 | 12.20 | 0.96 | 3.26 | 29.4 | 493 | 0.54 | 9.10 | ||||||||||||||||||
L0985-12 | 1 | 52 | 2.20 | 239.8 | 1.53 | 0.05 | 7.55 | 16.57 | 9.31 | 14.22 | 12.42 | 1.07 | 3.33 | 30.6 | 531 | 0.31 | 9.36 | |||||||||||||||||||
4155a | 0.52 | 265 | 31.00 | 326.8 | 1.60 | 0.04 | 11.96 | 57.45 | 22.93 | 10.70 | 12.36 | 1.44 | 3.40 | 35.99 | 633 | 0.55 | 10.57 | |||||||||||||||||||
4152a | 0.26 | 150 | 0.82 | 271.1 | 3.06 | 0.18 | 1.90 | 5.90 | 6.84 | 12.34 | 10.47 | 1.30 | 4.71 | 14.82 | 412 | 0.26 | 22.74 | |||||||||||||||||||
4152f | 0.26 | 190 | 1.50 | 231.8 | 3.30 | 0.14 | 1.51 | 5.43 | 6.81 | 8.96 | 10.95 | 1.26 | 4.61 | 22.54 | 357 | 0.39 | 24.72 | |||||||||||||||||||
4168a | 0.40 | 60 | 2.10 | 473.9 | 1.96 | 0.08 | 3.46 | 6.69 | 8.26 | 5.58 | 16.18 | 1.07 | 5.44 | 28.08 | 490 | 0.37 | 13.09 | |||||||||||||||||||
4168c | 0.26 | 90 | 2.00 | 505.5 | 2.03 | 0.07 | 3.36 | 7.51 | 8.01 | 6.37 | 15.25 | 1.06 | 4.58 | 23.21 | 477 | 0.45 | 13.65 | |||||||||||||||||||
K1γδ | L0875Tw1 | 0.72 | 62 | 1.30 | 432.0 | 1.57 | 0.10 | 26.90 | 131.24 | 8.17 | 30.24 | 16.65 | 1.48 | 3.99 | 31.8 | 1200 | 0.45 | 12.43 | ||||||||||||||||||
L1810GS-1 | 1.3 | 155 | 3.50 | 358.5 | 1.29 | 0.06 | 7.80 | 15.97 | 5.08 | 30.35 | 13.32 | 1.01 | 2.68 | 21.9 | 544 | 0.28 | 5.43 | |||||||||||||||||||
1863a | 11.00 | 320 | 4.50 | 409.1 | 1.57 | 0.03 | 10.08 | 24.77 | 15.31 | 73.00 | 15.10 | 1.26 | 3.01 | 26.57 | 618 | 0.21 | 6.74 | |||||||||||||||||||
K1γδπ | D0255Y1 | 0.26 | 51 | 1.30 | 764.5 | 2.26 | 0.13 | 4.15 | 16.42 | 3.07 | 3.25 | 21.44 | 1.23 | 5.79 | 10.6 | 279 | 0.18 | 16.02 | ||||||||||||||||||
L0200a | 0.38 | 68 | 1.80 | 621.3 | 2.38 | 0.06 | 12.39 | 37.99 | 7.80 | 10.46 | 19.71 | 1.17 | 4.33 | 58.93 | 749 | 0.29 | 14.67 | |||||||||||||||||||
K1δο | L2015GS.XT.DY.TW1 | 0.27 | 40 | 1.80 | 93.2 | 1.00 | 0.06 | 4.30 | 11.52 | 0.62 | 12.12 | 11.80 | 1.67 | 2.07 | 4.0 | 762 | 0.27 | 3.19 | ||||||||||||||||||
L2015GS.XT.DY.TW2 | 0.26 | 46 | 2.60 | 83.3 | 1.04 | 0.05 | 4.70 | 10.33 | 0.62 | 14.25 | 11.83 | 1.59 | 2.11 | 4.2 | 756 | 0.22 | 3.05 | |||||||||||||||||||
K1δομ | P5 7-2 | 0.31 | 500 | 15.00 | 443.6 | 2.61 | 0.15 | 5.10 | 18.67 | 11.32 | 40.63 | 16.83 | 1.59 | 3.52 | 30.0 | 449 | 0.23 | 10.73 | ||||||||||||||||||
P7Gs-1 | 0.68 | 33 | 1.10 | 444.5 | 1.42 | 0.07 | 8.01 | 21.78 | 2.18 | 8.89 | 14.86 | 0.84 | 3.18 | 65.9 | 564 | 0.19 | 9.79 | |||||||||||||||||||
5561a | 0.58 | 36 | 0.78 | 396.7 | 1.78 | 0.04 | 9.14 | 9.95 | 3.45 | 46.21 | 13.87 | 1.21 | 2.05 | 16.64 | 926 | 0.29 | 5.88 | |||||||||||||||||||
K1δμ | P4Tw23-1 | 4.8 | 78 | 0.97 | 157.3 | 1.14 | 0.07 | 18.20 | 76.22 | 0.73 | 17.77 | 9.71 | 1.09 | 2.73 | 39.2 | 861 | 0.50 | 7.66 | ||||||||||||||||||
L0550Tw1 | 0.5 | 38 | 2.60 | 406.3 | 1.65 | 0.10 | 15.79 | 65.03 | 3.47 | 19.81 | 18.43 | 1.42 | 5.04 | 32.8 | 873 | 0.44 | 12.17 |
Table 4 Trace element contents in Early Cretaceous intrusive rocks
填图单位 | 样品编号 | wB/10-9 | wB/10-6 | |||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Au | Ag | Sn | Ba | Be | Cd | Co | Cr | Cs | Cu | Ga | Ge | Hf | Li | Mn | Mo | Nb | ||||||||||||||||||||
K1ηγ | P5TW7-1 | 0.33 | 48 | 7.50 | 388.7 | 3.39 | 0.05 | 2.92 | 7.03 | 18.30 | 3.02 | 15.54 | 2.24 | 2.52 | 46.3 | 409 | 0.12 | 11.63 | ||||||||||||||||||
4159a | 0.48 | 33 | 3.60 | 362.2 | 1.44 | 0.04 | 15.65 | 42.95 | 8.11 | 14.07 | 13.02 | 1.30 | 3.34 | 33.42 | 742 | 0.26 | 9.50 | |||||||||||||||||||
4159b | 0.32 | 36 | 1.90 | 314.2 | 1.47 | 0.05 | 14.49 | 37.17 | 5.91 | 21.99 | 11.28 | 1.08 | 3.18 | 28.66 | 744 | 0.24 | 8.98 | |||||||||||||||||||
K1γπ | L0985-11 | 0.31 | 96 | 2.00 | 268.8 | 1.49 | 0.06 | 9.02 | 16.80 | 7.83 | 9.42 | 12.20 | 0.96 | 3.26 | 29.4 | 493 | 0.54 | 9.10 | ||||||||||||||||||
L0985-12 | 1 | 52 | 2.20 | 239.8 | 1.53 | 0.05 | 7.55 | 16.57 | 9.31 | 14.22 | 12.42 | 1.07 | 3.33 | 30.6 | 531 | 0.31 | 9.36 | |||||||||||||||||||
4155a | 0.52 | 265 | 31.00 | 326.8 | 1.60 | 0.04 | 11.96 | 57.45 | 22.93 | 10.70 | 12.36 | 1.44 | 3.40 | 35.99 | 633 | 0.55 | 10.57 | |||||||||||||||||||
4152a | 0.26 | 150 | 0.82 | 271.1 | 3.06 | 0.18 | 1.90 | 5.90 | 6.84 | 12.34 | 10.47 | 1.30 | 4.71 | 14.82 | 412 | 0.26 | 22.74 | |||||||||||||||||||
4152f | 0.26 | 190 | 1.50 | 231.8 | 3.30 | 0.14 | 1.51 | 5.43 | 6.81 | 8.96 | 10.95 | 1.26 | 4.61 | 22.54 | 357 | 0.39 | 24.72 | |||||||||||||||||||
4168a | 0.40 | 60 | 2.10 | 473.9 | 1.96 | 0.08 | 3.46 | 6.69 | 8.26 | 5.58 | 16.18 | 1.07 | 5.44 | 28.08 | 490 | 0.37 | 13.09 | |||||||||||||||||||
4168c | 0.26 | 90 | 2.00 | 505.5 | 2.03 | 0.07 | 3.36 | 7.51 | 8.01 | 6.37 | 15.25 | 1.06 | 4.58 | 23.21 | 477 | 0.45 | 13.65 | |||||||||||||||||||
K1γδ | L0875Tw1 | 0.72 | 62 | 1.30 | 432.0 | 1.57 | 0.10 | 26.90 | 131.24 | 8.17 | 30.24 | 16.65 | 1.48 | 3.99 | 31.8 | 1200 | 0.45 | 12.43 | ||||||||||||||||||
L1810GS-1 | 1.3 | 155 | 3.50 | 358.5 | 1.29 | 0.06 | 7.80 | 15.97 | 5.08 | 30.35 | 13.32 | 1.01 | 2.68 | 21.9 | 544 | 0.28 | 5.43 | |||||||||||||||||||
1863a | 11.00 | 320 | 4.50 | 409.1 | 1.57 | 0.03 | 10.08 | 24.77 | 15.31 | 73.00 | 15.10 | 1.26 | 3.01 | 26.57 | 618 | 0.21 | 6.74 | |||||||||||||||||||
K1γδπ | D0255Y1 | 0.26 | 51 | 1.30 | 764.5 | 2.26 | 0.13 | 4.15 | 16.42 | 3.07 | 3.25 | 21.44 | 1.23 | 5.79 | 10.6 | 279 | 0.18 | 16.02 | ||||||||||||||||||
L0200a | 0.38 | 68 | 1.80 | 621.3 | 2.38 | 0.06 | 12.39 | 37.99 | 7.80 | 10.46 | 19.71 | 1.17 | 4.33 | 58.93 | 749 | 0.29 | 14.67 | |||||||||||||||||||
K1δο | L2015GS.XT.DY.TW1 | 0.27 | 40 | 1.80 | 93.2 | 1.00 | 0.06 | 4.30 | 11.52 | 0.62 | 12.12 | 11.80 | 1.67 | 2.07 | 4.0 | 762 | 0.27 | 3.19 | ||||||||||||||||||
L2015GS.XT.DY.TW2 | 0.26 | 46 | 2.60 | 83.3 | 1.04 | 0.05 | 4.70 | 10.33 | 0.62 | 14.25 | 11.83 | 1.59 | 2.11 | 4.2 | 756 | 0.22 | 3.05 | |||||||||||||||||||
K1δομ | P5 7-2 | 0.31 | 500 | 15.00 | 443.6 | 2.61 | 0.15 | 5.10 | 18.67 | 11.32 | 40.63 | 16.83 | 1.59 | 3.52 | 30.0 | 449 | 0.23 | 10.73 | ||||||||||||||||||
P7Gs-1 | 0.68 | 33 | 1.10 | 444.5 | 1.42 | 0.07 | 8.01 | 21.78 | 2.18 | 8.89 | 14.86 | 0.84 | 3.18 | 65.9 | 564 | 0.19 | 9.79 | |||||||||||||||||||
5561a | 0.58 | 36 | 0.78 | 396.7 | 1.78 | 0.04 | 9.14 | 9.95 | 3.45 | 46.21 | 13.87 | 1.21 | 2.05 | 16.64 | 926 | 0.29 | 5.88 | |||||||||||||||||||
K1δμ | P4Tw23-1 | 4.8 | 78 | 0.97 | 157.3 | 1.14 | 0.07 | 18.20 | 76.22 | 0.73 | 17.77 | 9.71 | 1.09 | 2.73 | 39.2 | 861 | 0.50 | 7.66 | ||||||||||||||||||
L0550Tw1 | 0.5 | 38 | 2.60 | 406.3 | 1.65 | 0.10 | 15.79 | 65.03 | 3.47 | 19.81 | 18.43 | 1.42 | 5.04 | 32.8 | 873 | 0.44 | 12.17 |
测点号 | 同位素比值及误差 | 同位素年龄及误差/Ma | 年龄/ Ma | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | 208Pb/232Th | 1σ | 207Pb/ 206Pb | 1σ | 207Pb/ 235U | 1σ | 206Pb/ 238U | 1σ | 208Pb/ 232Th | 1σ | ||||
TW1751-01 | 0.046 1 | 0.005 9 | 0.121 1 | 0.015 3 | 0.019 1 | 0.000 4 | 0.010 9 | 0.000 7 | 240 | 116 | 14 | 122 | 3 | 220 | 13 | 122 | |||
TW1751-02 | 0.046 4 | 0.005 9 | 0.121 5 | 0.015 1 | 0.019 0 | 0.000 4 | 0.005 8 | 0.000 4 | 20 | 215 | 116 | 14 | 121 | 3 | 117 | 7 | 121 | ||
TW1751-03 | 0.046 1 | 0.003 3 | 0.113 4 | 0.007 7 | 0.017 9 | 0.000 4 | 0.035 0 | 0.001 2 | 156 | 109 | 7 | 114 | 2 | 696 | 23 | 114 | |||
TW1751-05 | 0.050 4 | 0.006 8 | 0.131 8 | 0.017 4 | 0.019 0 | 0.000 4 | 0.006 2 | 0.000 4 | 214 | 251 | 126 | 16 | 121 | 3 | 125 | 8 | 121 | ||
TW1751-08 | 0.045 5 | 0.006 7 | 0.113 9 | 0.016 5 | 0.018 2 | 0.000 4 | 0.005 7 | 0.000 4 | -29 | 230 | 110 | 15 | 116 | 3 | 115 | 7 | 116 | ||
TW1751-09 | 0.053 4 | 0.005 7 | 0.134 6 | 0.014 0 | 0.018 3 | 0.000 4 | 0.005 5 | 0.000 3 | 344 | 196 | 128 | 13 | 117 | 2 | 112 | 5 | 117 | ||
TW1751-10 | 0.050 1 | 0.004 3 | 0.127 6 | 0.010 7 | 0.018 5 | 0.000 3 | 0.006 0 | 0.000 2 | 198 | 157 | 122 | 10 | 118 | 2 | 121 | 4 | 118 | ||
TW1751-12 | 0.052 8 | 0.007 0 | 0.132 4 | 0.017 2 | 0.018 2 | 0.000 4 | 0.005 6 | 0.000 4 | 322 | 248 | 126 | 15 | 116 | 3 | 113 | 7 | 116 | ||
TW1751-14 | 0.045 3 | 0.008 4 | 0.111 7 | 0.020 5 | 0.017 9 | 0.000 5 | 0.006 7 | 0.000 5 | -6 | 271 | 107 | 19 | 114 | 3 | 135 | 10 | 114 | ||
TW1751-16 | 0.044 7 | 0.004 4 | 0.109 6 | 0.010 6 | 0.017 8 | 0.000 3 | 0.005 6 | 0.000 2 | -33 | 173 | 106 | 10 | 113 | 2 | 112 | 4 | 113 | ||
TW1751-18 | 0.051 0 | 0.006 9 | 0.128 5 | 0.017 2 | 0.018 3 | 0.000 4 | 0.005 9 | 0.000 4 | 239 | 253 | 123 | 15 | 117 | 3 | 119 | 7 | 117 | ||
TW1751-19 | 0.047 3 | 0.005 9 | 0.114 3 | 0.014 1 | 0.017 5 | 0.000 4 | 0.006 3 | 0.000 4 | 62 | 221 | 110 | 13 | 112 | 2 | 128 | 7 | 112 | ||
TW1751-23 | 0.048 0 | 0.005 4 | 0.116 6 | 0.012 8 | 0.017 6 | 0.000 4 | 0.005 9 | 0.000 2 | 100 | 205 | 112 | 12 | 113 | 2 | 118 | 4 | 113 | ||
TW1751-24 | 0.052 1 | 0.005 8 | 0.126 7 | 0.014 0 | 0.017 6 | 0.000 4 | 0.005 7 | 0.000 2 | 288 | 210 | 121 | 13 | 113 | 2 | 114 | 5 | 113 | ||
TW1751-25 | 0.054 1 | 0.004 4 | 0.131 8 | 0.010 5 | 0.017 7 | 0.000 3 | 0.005 4 | 0.000 2 | 377 | 147 | 126 | 9 | 113 | 2 | 110 | 4 | 113 | ||
TW1751-26 | 0.052 2 | 0.006 6 | 0.126 8 | 0.015 9 | 0.017 6 | 0.000 4 | 0.005 7 | 0.000 3 | 295 | 240 | 121 | 14 | 113 | 3 | 115 | 7 | 113 | ||
TW1751-27 | 0.052 5 | 0.007 3 | 0.125 6 | 0.017 0 | 0.017 4 | 0.000 5 | 0.004 9 | 0.000 4 | 306 | 255 | 120 | 15 | 111 | 3 | 100 | 8 | 111 | ||
TW1751-30 | 0.049 5 | 0.006 2 | 0.118 6 | 0.014 5 | 0.017 4 | 0.000 4 | 0.005 1 | 0.000 3 | 172 | 230 | 114 | 13 | 111 | 2 | 103 | 6 | 111 | ||
TW0238-001 | 0.049 5 | 0.003 1 | 0.123 8 | 0.007 6 | 0.018 1 | 0.000 2 | 0.006 0 | 0.000 2 | 172 | 117 | 118 | 7 | 116 | 1 | 122 | 4 | 116 | ||
TW0238-002 | 0.050 7 | 0.003 7 | 0.124 1 | 0.008 8 | 0.017 7 | 0.000 3 | 0.005 8 | 0.000 2 | 227 | 133 | 119 | 8 | 113 | 2 | 116 | 5 | 113 | ||
TW0238-003 | 0.048 8 | 0.003 3 | 0.120 4 | 0.008 0 | 0.017 9 | 0.000 2 | 0.006 0 | 0.000 3 | 139 | 124 | 115 | 7 | 114 | 2 | 121 | 5 | 114 | ||
TW0238-005 | 0.050 9 | 0.004 6 | 0.119 4 | 0.010 6 | 0.017 0 | 0.000 3 | 0.006 1 | 0.000 3 | 234 | 164 | 115 | 10 | 109 | 2 | 123 | 5 | 109 | ||
TW0238-006 | 0.051 4 | 0.002 4 | 0.117 6 | 0.005 2 | 0.016 6 | 0.000 2 | 0.006 1 | 0.000 1 | 259 | 82 | 113 | 5 | 106 | 1 | 122 | 3 | 106 | ||
TW0238-007 | 0.048 7 | 0.002 5 | 0.119 4 | 0.005 9 | 0.017 8 | 0.000 2 | 0.006 0 | 0.000 2 | 132 | 93 | 115 | 5 | 114 | 1 | 120 | 3 | 114 | ||
TW0238-008 | 0.051 6 | 0.002 3 | 0.123 8 | 0.005 2 | 0.017 4 | 0.000 2 | 0.006 2 | 0.000 1 | 267 | 78 | 118 | 5 | 111 | 1 | 124 | 3 | 111 | ||
TW0238-009 | 0.049 7 | 0.002 5 | 0.123 4 | 0.006 1 | 0.018 0 | 0.000 2 | 0.006 3 | 0.000 2 | 182 | 94 | 118 | 6 | 115 | 1 | 127 | 4 | 115 | ||
TW0238-010 | 0.051 0 | 0.003 4 | 0.120 4 | 0.007 8 | 0.017 1 | 0.000 3 | 0.005 8 | 0.000 2 | 240 | 121 | 115 | 7 | 109 | 2 | 118 | 4 | 109 | ||
TW0238-011 | 0.049 7 | 0.003 2 | 0.120 7 | 0.007 5 | 0.017 6 | 0.000 2 | 0.005 8 | 0.000 2 | 183 | 116 | 116 | 7 | 113 | 1 | 116 | 3 | 113 | ||
TW0238-012 | 0.049 0 | 0.004 1 | 0.117 0 | 0.009 5 | 0.017 3 | 0.000 3 | 0.006 3 | 0.000 3 | 150 | 149 | 112 | 9 | 111 | 2 | 126 | 5 | 111 | ||
TW0238-013 | 0.050 5 | 0.003 6 | 0.123 6 | 0.008 5 | 0.017 8 | 0.000 3 | 0.005 8 | 0.000 2 | 218 | 128 | 118 | 8 | 113 | 2 | 116 | 4 | 113 | ||
TW0238-014 | 0.048 8 | 0.002 5 | 0.112 7 | 0.005 6 | 0.016 8 | 0.000 2 | 0.006 5 | 0.000 2 | 139 | 90 | 108 | 5 | 107 | 1 | 130 | 3 | 107 | ||
TW0238-015 | 0.051 6 | 0.007 3 | 0.119 4 | 0.016 5 | 0.016 8 | 0.000 5 | 0.005 5 | 0.000 4 | 267 | 252 | 114 | 15 | 107 | 3 | 111 | 8 | 107 | ||
TW0238-016 | 0.051 2 | 0.003 1 | 0.124 1 | 0.007 3 | 0.017 6 | 0.000 2 | 0.006 5 | 0.000 2 | 248 | 110 | 119 | 7 | 112 | 2 | 131 | 5 | 112 | ||
TW0238-017 | 0.050 6 | 0.004 1 | 0.121 7 | 0.009 6 | 0.017 5 | 0.000 3 | 0.006 1 | 0.000 2 | 223 | 146 | 117 | 9 | 112 | 2 | 122 | 4 | 112 | ||
TW0238-018 | 0.051 0 | 0.004 0 | 0.121 2 | 0.009 2 | 0.017 3 | 0.000 3 | 0.006 1 | 0.000 2 | 239 | 142 | 116 | 8 | 110 | 2 | 122 | 5 | 110 | ||
TW0238-019 | 0.046 3 | 0.003 9 | 0.114 0 | 0.009 3 | 0.017 9 | 0.000 3 | 0.005 8 | 0.000 3 | 11 | 146 | 110 | 8 | 114 | 2 | 116 | 7 | 114 | ||
TW0238-020 | 0.047 8 | 0.004 8 | 0.116 4 | 0.011 5 | 0.017 7 | 0.000 4 | 0.006 3 | 0.000 3 | 90 | 182 | 112 | 10 | 113 | 2 | 126 | 7 | 113 | ||
TW0238-021 | 0.046 9 | 0.002 5 | 0.113 9 | 0.006 0 | 0.017 6 | 0.000 2 | 0.006 0 | 0.000 2 | 42 | 91 | 109 | 5 | 113 | 1 | 121 | 3 | 113 | ||
TW0238-022 | 0.050 2 | 0.004 3 | 0.119 3 | 0.010 1 | 0.017 3 | 0.000 3 | 0.005 7 | 0.000 2 | 202 | 155 | 114 | 9 | 110 | 2 | 115 | 4 | 110 | ||
TW0238-023 | 0.050 0 | 0.003 8 | 0.126 5 | 0.009 3 | 0.018 4 | 0.000 3 | 0.006 6 | 0.000 3 | 193 | 136 | 121 | 8 | 117 | 2 | 134 | 5 | 117 | ||
TW0238-024 | 0.046 9 | 0.003 0 | 0.111 5 | 0.007 0 | 0.017 3 | 0.000 2 | 0.006 1 | 0.000 2 | 42 | 111 | 107 | 6 | 110 | 1 | 122 | 4 | 110 | ||
TW0238-025 | 0.046 8 | 0.002 6 | 0.112 2 | 0.006 0 | 0.017 4 | 0.000 2 | 0.006 5 | 0.000 3 | 40 | 94 | 108 | 5 | 111 | 1 | 132 | 6 | 111 | ||
TW0238-026 | 0.047 6 | 0.002 7 | 0.116 0 | 0.006 5 | 0.017 7 | 0.000 2 | 0.006 1 | 0.000 2 | 78 | 102 | 111 | 6 | 113 | 1 | 122 | 4 | 113 | ||
TW0238-027 | 0.047 1 | 0.002 4 | 0.114 6 | 0.005 7 | 0.017 7 | 0.000 2 | 0.005 8 | 0.000 2 | 52 | 88 | 110 | 5 | 113 | 1 | 116 | 4 | 113 | ||
TW0238-029 | 0.045 1 | 0.002 8 | 0.111 3 | 0.006 7 | 0.017 9 | 0.000 2 | 0.005 8 | 0.000 2 | -13 | 105 | 107 | 6 | 114 | 1 | 116 | 5 | 114 | ||
TW0238-030 | 0.046 5 | 0.002 9 | 0.113 1 | 0.006 8 | 0.017 6 | 0.000 2 | 0.005 8 | 0.000 2 | 24 | 105 | 109 | 6 | 113 | 1 | 117 | 4 | 113 |
Table 5 U-Pb SHRIMP dating of zircons from samples TW1751 and TW0238
测点号 | 同位素比值及误差 | 同位素年龄及误差/Ma | 年龄/ Ma | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | 208Pb/232Th | 1σ | 207Pb/ 206Pb | 1σ | 207Pb/ 235U | 1σ | 206Pb/ 238U | 1σ | 208Pb/ 232Th | 1σ | ||||
TW1751-01 | 0.046 1 | 0.005 9 | 0.121 1 | 0.015 3 | 0.019 1 | 0.000 4 | 0.010 9 | 0.000 7 | 240 | 116 | 14 | 122 | 3 | 220 | 13 | 122 | |||
TW1751-02 | 0.046 4 | 0.005 9 | 0.121 5 | 0.015 1 | 0.019 0 | 0.000 4 | 0.005 8 | 0.000 4 | 20 | 215 | 116 | 14 | 121 | 3 | 117 | 7 | 121 | ||
TW1751-03 | 0.046 1 | 0.003 3 | 0.113 4 | 0.007 7 | 0.017 9 | 0.000 4 | 0.035 0 | 0.001 2 | 156 | 109 | 7 | 114 | 2 | 696 | 23 | 114 | |||
TW1751-05 | 0.050 4 | 0.006 8 | 0.131 8 | 0.017 4 | 0.019 0 | 0.000 4 | 0.006 2 | 0.000 4 | 214 | 251 | 126 | 16 | 121 | 3 | 125 | 8 | 121 | ||
TW1751-08 | 0.045 5 | 0.006 7 | 0.113 9 | 0.016 5 | 0.018 2 | 0.000 4 | 0.005 7 | 0.000 4 | -29 | 230 | 110 | 15 | 116 | 3 | 115 | 7 | 116 | ||
TW1751-09 | 0.053 4 | 0.005 7 | 0.134 6 | 0.014 0 | 0.018 3 | 0.000 4 | 0.005 5 | 0.000 3 | 344 | 196 | 128 | 13 | 117 | 2 | 112 | 5 | 117 | ||
TW1751-10 | 0.050 1 | 0.004 3 | 0.127 6 | 0.010 7 | 0.018 5 | 0.000 3 | 0.006 0 | 0.000 2 | 198 | 157 | 122 | 10 | 118 | 2 | 121 | 4 | 118 | ||
TW1751-12 | 0.052 8 | 0.007 0 | 0.132 4 | 0.017 2 | 0.018 2 | 0.000 4 | 0.005 6 | 0.000 4 | 322 | 248 | 126 | 15 | 116 | 3 | 113 | 7 | 116 | ||
TW1751-14 | 0.045 3 | 0.008 4 | 0.111 7 | 0.020 5 | 0.017 9 | 0.000 5 | 0.006 7 | 0.000 5 | -6 | 271 | 107 | 19 | 114 | 3 | 135 | 10 | 114 | ||
TW1751-16 | 0.044 7 | 0.004 4 | 0.109 6 | 0.010 6 | 0.017 8 | 0.000 3 | 0.005 6 | 0.000 2 | -33 | 173 | 106 | 10 | 113 | 2 | 112 | 4 | 113 | ||
TW1751-18 | 0.051 0 | 0.006 9 | 0.128 5 | 0.017 2 | 0.018 3 | 0.000 4 | 0.005 9 | 0.000 4 | 239 | 253 | 123 | 15 | 117 | 3 | 119 | 7 | 117 | ||
TW1751-19 | 0.047 3 | 0.005 9 | 0.114 3 | 0.014 1 | 0.017 5 | 0.000 4 | 0.006 3 | 0.000 4 | 62 | 221 | 110 | 13 | 112 | 2 | 128 | 7 | 112 | ||
TW1751-23 | 0.048 0 | 0.005 4 | 0.116 6 | 0.012 8 | 0.017 6 | 0.000 4 | 0.005 9 | 0.000 2 | 100 | 205 | 112 | 12 | 113 | 2 | 118 | 4 | 113 | ||
TW1751-24 | 0.052 1 | 0.005 8 | 0.126 7 | 0.014 0 | 0.017 6 | 0.000 4 | 0.005 7 | 0.000 2 | 288 | 210 | 121 | 13 | 113 | 2 | 114 | 5 | 113 | ||
TW1751-25 | 0.054 1 | 0.004 4 | 0.131 8 | 0.010 5 | 0.017 7 | 0.000 3 | 0.005 4 | 0.000 2 | 377 | 147 | 126 | 9 | 113 | 2 | 110 | 4 | 113 | ||
TW1751-26 | 0.052 2 | 0.006 6 | 0.126 8 | 0.015 9 | 0.017 6 | 0.000 4 | 0.005 7 | 0.000 3 | 295 | 240 | 121 | 14 | 113 | 3 | 115 | 7 | 113 | ||
TW1751-27 | 0.052 5 | 0.007 3 | 0.125 6 | 0.017 0 | 0.017 4 | 0.000 5 | 0.004 9 | 0.000 4 | 306 | 255 | 120 | 15 | 111 | 3 | 100 | 8 | 111 | ||
TW1751-30 | 0.049 5 | 0.006 2 | 0.118 6 | 0.014 5 | 0.017 4 | 0.000 4 | 0.005 1 | 0.000 3 | 172 | 230 | 114 | 13 | 111 | 2 | 103 | 6 | 111 | ||
TW0238-001 | 0.049 5 | 0.003 1 | 0.123 8 | 0.007 6 | 0.018 1 | 0.000 2 | 0.006 0 | 0.000 2 | 172 | 117 | 118 | 7 | 116 | 1 | 122 | 4 | 116 | ||
TW0238-002 | 0.050 7 | 0.003 7 | 0.124 1 | 0.008 8 | 0.017 7 | 0.000 3 | 0.005 8 | 0.000 2 | 227 | 133 | 119 | 8 | 113 | 2 | 116 | 5 | 113 | ||
TW0238-003 | 0.048 8 | 0.003 3 | 0.120 4 | 0.008 0 | 0.017 9 | 0.000 2 | 0.006 0 | 0.000 3 | 139 | 124 | 115 | 7 | 114 | 2 | 121 | 5 | 114 | ||
TW0238-005 | 0.050 9 | 0.004 6 | 0.119 4 | 0.010 6 | 0.017 0 | 0.000 3 | 0.006 1 | 0.000 3 | 234 | 164 | 115 | 10 | 109 | 2 | 123 | 5 | 109 | ||
TW0238-006 | 0.051 4 | 0.002 4 | 0.117 6 | 0.005 2 | 0.016 6 | 0.000 2 | 0.006 1 | 0.000 1 | 259 | 82 | 113 | 5 | 106 | 1 | 122 | 3 | 106 | ||
TW0238-007 | 0.048 7 | 0.002 5 | 0.119 4 | 0.005 9 | 0.017 8 | 0.000 2 | 0.006 0 | 0.000 2 | 132 | 93 | 115 | 5 | 114 | 1 | 120 | 3 | 114 | ||
TW0238-008 | 0.051 6 | 0.002 3 | 0.123 8 | 0.005 2 | 0.017 4 | 0.000 2 | 0.006 2 | 0.000 1 | 267 | 78 | 118 | 5 | 111 | 1 | 124 | 3 | 111 | ||
TW0238-009 | 0.049 7 | 0.002 5 | 0.123 4 | 0.006 1 | 0.018 0 | 0.000 2 | 0.006 3 | 0.000 2 | 182 | 94 | 118 | 6 | 115 | 1 | 127 | 4 | 115 | ||
TW0238-010 | 0.051 0 | 0.003 4 | 0.120 4 | 0.007 8 | 0.017 1 | 0.000 3 | 0.005 8 | 0.000 2 | 240 | 121 | 115 | 7 | 109 | 2 | 118 | 4 | 109 | ||
TW0238-011 | 0.049 7 | 0.003 2 | 0.120 7 | 0.007 5 | 0.017 6 | 0.000 2 | 0.005 8 | 0.000 2 | 183 | 116 | 116 | 7 | 113 | 1 | 116 | 3 | 113 | ||
TW0238-012 | 0.049 0 | 0.004 1 | 0.117 0 | 0.009 5 | 0.017 3 | 0.000 3 | 0.006 3 | 0.000 3 | 150 | 149 | 112 | 9 | 111 | 2 | 126 | 5 | 111 | ||
TW0238-013 | 0.050 5 | 0.003 6 | 0.123 6 | 0.008 5 | 0.017 8 | 0.000 3 | 0.005 8 | 0.000 2 | 218 | 128 | 118 | 8 | 113 | 2 | 116 | 4 | 113 | ||
TW0238-014 | 0.048 8 | 0.002 5 | 0.112 7 | 0.005 6 | 0.016 8 | 0.000 2 | 0.006 5 | 0.000 2 | 139 | 90 | 108 | 5 | 107 | 1 | 130 | 3 | 107 | ||
TW0238-015 | 0.051 6 | 0.007 3 | 0.119 4 | 0.016 5 | 0.016 8 | 0.000 5 | 0.005 5 | 0.000 4 | 267 | 252 | 114 | 15 | 107 | 3 | 111 | 8 | 107 | ||
TW0238-016 | 0.051 2 | 0.003 1 | 0.124 1 | 0.007 3 | 0.017 6 | 0.000 2 | 0.006 5 | 0.000 2 | 248 | 110 | 119 | 7 | 112 | 2 | 131 | 5 | 112 | ||
TW0238-017 | 0.050 6 | 0.004 1 | 0.121 7 | 0.009 6 | 0.017 5 | 0.000 3 | 0.006 1 | 0.000 2 | 223 | 146 | 117 | 9 | 112 | 2 | 122 | 4 | 112 | ||
TW0238-018 | 0.051 0 | 0.004 0 | 0.121 2 | 0.009 2 | 0.017 3 | 0.000 3 | 0.006 1 | 0.000 2 | 239 | 142 | 116 | 8 | 110 | 2 | 122 | 5 | 110 | ||
TW0238-019 | 0.046 3 | 0.003 9 | 0.114 0 | 0.009 3 | 0.017 9 | 0.000 3 | 0.005 8 | 0.000 3 | 11 | 146 | 110 | 8 | 114 | 2 | 116 | 7 | 114 | ||
TW0238-020 | 0.047 8 | 0.004 8 | 0.116 4 | 0.011 5 | 0.017 7 | 0.000 4 | 0.006 3 | 0.000 3 | 90 | 182 | 112 | 10 | 113 | 2 | 126 | 7 | 113 | ||
TW0238-021 | 0.046 9 | 0.002 5 | 0.113 9 | 0.006 0 | 0.017 6 | 0.000 2 | 0.006 0 | 0.000 2 | 42 | 91 | 109 | 5 | 113 | 1 | 121 | 3 | 113 | ||
TW0238-022 | 0.050 2 | 0.004 3 | 0.119 3 | 0.010 1 | 0.017 3 | 0.000 3 | 0.005 7 | 0.000 2 | 202 | 155 | 114 | 9 | 110 | 2 | 115 | 4 | 110 | ||
TW0238-023 | 0.050 0 | 0.003 8 | 0.126 5 | 0.009 3 | 0.018 4 | 0.000 3 | 0.006 6 | 0.000 3 | 193 | 136 | 121 | 8 | 117 | 2 | 134 | 5 | 117 | ||
TW0238-024 | 0.046 9 | 0.003 0 | 0.111 5 | 0.007 0 | 0.017 3 | 0.000 2 | 0.006 1 | 0.000 2 | 42 | 111 | 107 | 6 | 110 | 1 | 122 | 4 | 110 | ||
TW0238-025 | 0.046 8 | 0.002 6 | 0.112 2 | 0.006 0 | 0.017 4 | 0.000 2 | 0.006 5 | 0.000 3 | 40 | 94 | 108 | 5 | 111 | 1 | 132 | 6 | 111 | ||
TW0238-026 | 0.047 6 | 0.002 7 | 0.116 0 | 0.006 5 | 0.017 7 | 0.000 2 | 0.006 1 | 0.000 2 | 78 | 102 | 111 | 6 | 113 | 1 | 122 | 4 | 113 | ||
TW0238-027 | 0.047 1 | 0.002 4 | 0.114 6 | 0.005 7 | 0.017 7 | 0.000 2 | 0.005 8 | 0.000 2 | 52 | 88 | 110 | 5 | 113 | 1 | 116 | 4 | 113 | ||
TW0238-029 | 0.045 1 | 0.002 8 | 0.111 3 | 0.006 7 | 0.017 9 | 0.000 2 | 0.005 8 | 0.000 2 | -13 | 105 | 107 | 6 | 114 | 1 | 116 | 5 | 114 | ||
TW0238-030 | 0.046 5 | 0.002 9 | 0.113 1 | 0.006 8 | 0.017 6 | 0.000 2 | 0.005 8 | 0.000 2 | 24 | 105 | 109 | 6 | 113 | 1 | 117 | 4 | 113 |
岩浆岩单元 | 代号 | 采样位置 | U-Pb同位素年龄/Ma | 备注 |
---|---|---|---|---|
肉红色花岗闪长斑岩 | K1γδπ | 查楚幅布木错北 | 113±0.43 | 本次测试 |
肉红色细粒花岗闪长岩 | K1γδ | 野马沟幅雄巴日北 | 116.2±3.6 | |
野马沟幅雄巴日 | 112.63±0.78 | |||
灰色石英闪长玢岩 | K1δομ | 拉木卓幅赛登 | 107±0.13 | |
肉红色花岗斑岩 | K1γπ | 查楚幅布木错南东 | 113.7±2.1 | 据文献[ |
Table 6 Isotopic age of granite in the study area
岩浆岩单元 | 代号 | 采样位置 | U-Pb同位素年龄/Ma | 备注 |
---|---|---|---|---|
肉红色花岗闪长斑岩 | K1γδπ | 查楚幅布木错北 | 113±0.43 | 本次测试 |
肉红色细粒花岗闪长岩 | K1γδ | 野马沟幅雄巴日北 | 116.2±3.6 | |
野马沟幅雄巴日 | 112.63±0.78 | |||
灰色石英闪长玢岩 | K1δομ | 拉木卓幅赛登 | 107±0.13 | |
肉红色花岗斑岩 | K1γπ | 查楚幅布木错南东 | 113.7±2.1 | 据文献[ |
Fig.10 Zircon dating of fine-grained granodiorite sample TW1751 from northern Xiongbari. a—Zircon Cl image; b—U-Pb concordia diagram for zircon dating; c—Histogram of zircon U-Pb isotopic age.
Fig.11 Zircon dating of granodiorite porphyry sample TW0238 from northern Bumuco. a—Zircon Cl image; b—U-Pb concordia diagram for zircon dating; c—Histogram of zircon U-Pb isotopic age.
Fig.14 MgO-FeOt-Al2O3 diagram of moderately felsic intrusive rocks in the study area. 1—Expansion center island; 2—Orogenic belt; 3—Oceanic ridge and ocean floor; 4—Oceanic island; 5—Continent.
Fig.15 R1-R2 multication diagram for moderately felsic intrusive rocks in the study area. 1—Mantle rift type; 2—Pre-collision type; 3—Post-collisional uplift type; 4—Post-orogenic type; 5—Syn-orogenic type; 6—Syn-collision type; 7—Post-orogenic type.
Fig.16 Nb-Y diagram of moderately felsic intrusive rocks in the study area. Syn-COLG—Syn-collisional granite; WPG—Intraplate granite; ORG—Mid-ocean ridge granite; VAG—Volcanic arc granite.
Fig.17 Rb-(Yb+Nb) diagram of moderately felsic intrusive rocks in the study area. Syn-COLG—Syn-collisional granite; WPG—Intraplate granite; ORG—Mid-ocean ridge granite; VAG—Volcanic arc granite.
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