Geochronology, petrogenesis and tectonic implications of the Qiaodian granite porphyry from the western Dabie Orogenic Belt, Central China

doi:10.13745/j.esf.sf.2020.12.9

Abstract

Abstract:

The ca. 145-120 Ma granitoids were regarded as important products of the thickened, delaminated partial melting Cretaceous crust beneath the Dabie Orogenic Belt. Our newly identified Qiaodian granite porphyry in the western Dabie Orogenic Belt can provide new constraints on the progression of lithospheric thinning and the transformation of tectonic regime to an extensional setting. SIMS and LA-ICP-MS zircon U-Pb dating suggests the Qiaodian granite porphyry was emplaced at 129 Ma. It has a negative zircon ε_Hf(t) value (between -24.5 and -14.7) with a two-stage model age of 2.4-1.9 Ga, and is characterized by coarse-grained feldspar phenocrysts. It has variable SiO₂ contents (63.07%-73.22%) and A/CNK values (0.87-1.73), with high K₂O(4.51%-5.47%) and low MgO(0.42%-1.82%) contents, suggesting high-K calc-alkaline granite affinity. It exhibits LREE-enriched rare earth elemental distribution patterns ((La/Yb)_N=29.6-34.2) with negative Eu anomalies ((Eu/Eu ^*)=0.77-0.92). The primitive mantle-normalized trace element patterns show enrichments of Rb, Ba and Pb and depletions of Nb, Ta and Ti. Compared with typical adakites, the Qiaodian granite porphyry has variable Sr((78-724)×10^-6) and relatively high Y((11.8-14.8)×10^-6) and Yb((1.09-1.37)×10^-6) contents, yielding a low Sr/Y ratio (6.7-55.5). These geochemical features, together with Paleoproterozoic residual zircon and two-stage Hf model ages, indicate the Qiaodian granite porphyry mainly derived from partial melting of Paleoproterozoic mafic materials at medium to low pressures. On the basis of our new results and previously published data, we consider the tectonic collapse and transformation of the western Dabie Orogenic Belt probably occurred around 130 Ma.

Key words: zircon U-Pb-Hf isotopes, high-K calc-alkaline granite, Early Cretaceous, western Dabie Orogenic Belt

CLC Number:

HUANG Haiyong, XU Yang, YIN Xuwei, YANG Kunguang, LIU Yu. Geochronology, petrogenesis and tectonic implications of the Qiaodian granite porphyry from the western Dabie Orogenic Belt, Central China[J]. Earth Science Frontiers, 2021, 28(5): 380-412.

Figures/Tables 16

References 83

[1]	KAY R W, KAY S M. Delamination and delamination magmatism[J]. Tectonophysics, 1993, 219(1/2/3):177-189. DOI URL
[2]	LI S G, HE Y S, WANG S J. Process and mechanism of mountain-root removal of the Dabie Orogen: constraints from geochronology and geochemistry of post-collisional igneous rocks[J]. Chinese Science Bulletin, 2013, 58(35):4411-4417. DOI URL
[3]	张国伟, 张本仁, 袁学诚, 等. 秦岭造山带与大陆动力学[M]. 北京: 科学出版社, 2001: 1-87.
[4]	LI S G, HUANG F, LI H. Post-collisional lithosphere delamination of the Dabie-Sulu orogen[J]. Chinese Science Bulletin, 2002, 47(3):259-263. DOI URL
[5]	马昌前, 杨坤光, 明厚利, 等. 大别山中生代地壳从挤压转向伸展的时间: 花岗岩的证据[J]. 中国科学: D辑, 2003, 33(9):817-827.
[6]	XU S T, SU W, LIU Y C, et al. Diamond from the Dabie Shan metamorphic rocks and its implication for tectonic setting[J]. Science, 1992, 256(5053):80-82. DOI URL
[7]	从柏林, 王清晨. 大别山—苏鲁超高压变质带研究的最新进展[J]. 科学通报, 1999, 44(11):1127-1141.
[8]	GAO S, ZHANG B R, JIN Z M. Lower crustal delamination in the Qinling-Dabie orogenic belt[J]. Science in China (Series D: Earth Sciences), 1999, 42(4):423-433.
[9]	JAHN B M, WU F Y, LO C H, et al. Crust-mantle interaction induced by deep subduction of the continental crust:geochemical and Sr-Nd isotopic evidence from post-collisional mafic-ultramafic intrusions of the northern Dabie complex, central China[J]. Chemical Geology, 1999, 157(1/2):119-146. DOI URL
[10]	YUAN X C, KLEMPERER S L, TENG W B, et al. Crustal structure and exhumation of the Dabie Shan ultrahigh-pressure orogen, Eastern China, from seismic reflection profiling[J]. Geology, 2003, 31(5):435. DOI URL
[11]	何永胜. 大别造山带碰撞后花岗质岩浆作用地球化学: 对去山根过程及山根结构的制约[D]. 合肥: 中国科学技术大学, 2011.
[12]	邓新. 北大别天堂寨花岗岩侵位机制及其动力学过程[D]. 武汉: 中国地质大学(武汉), 2013.
[13]	GUO F, NAKAMURU E, FAN W M, et al. Generation of Palaeocene adakitic andesites by magma mixing: Yanji area, NE China[J]. Journal of Petrology, 2007, 48(4):661-692. DOI URL
[14]	WANG Q, WYMAN D A, XU J F, et al. Early Cretaceous adakitic granites in the Northern Dabie Complex, central China: implications for partial melting and delamination of thickened lower crust[J]. Geochimica et Cosmochimica Acta, 2007, 71(10):2609-2636. DOI URL
[15]	XU H J, MA C Q, YE K. Early Cretaceous granitoids and their implications for the collapse of the Dabie orogen, Eastern China: SHRIMP zircon U-Pb dating and geochemistry[J]. Chemical Geology, 2007, 240(3/4):238-259. DOI URL
[16]	XU H J, MA C Q, SONG Y R, et al. Early Cretaceous intermediate-mafic dykes in the Dabie orogen, Eastern China:petrogenesis and implications for crust-mantle interaction[J]. Lithos, 2012, 154:83-99. DOI URL
[17]	HUANG F, LI S G, DONG F, et al. High-Mg adakitic rocks in the Dabie orogen, central China:implications for foundering mechanism of lower continental crust[J]. Chemical Geology, 2008, 255(1/2):1-13. DOI URL
[18]	ZHANG S B, ZHENG Y F, ZHAO Z F, et al. Origin of TTG-like rocks from anatexis of ancient lower crust:geochemical evidence from Neoproterozoic granitoids in South China[J]. Lithos, 2009, 113(3/4):347-368. DOI URL
[19]	LI J W, ZHAO X F, ZHOU M F, et al. Late Mesozoic magmatism from the Daye region, Eastern China: U-Pb ages, petrogenesis, and geodynamic implications[J]. Contributions to Mineralogy and Petrology, 2009, 157(3):383-409. DOI URL
[20]	MOYEN J F. High Sr/Y and La/Yb ratios:the meaning of the “adakitic signature”[J]. Lithos, 2009, 112(3/4):556-574. DOI URL
[21]	HE Y S, LI S G, HOEFS J, et al. Post-collisional granitoids from the Dabie orogen:new evidence for partial melting of a thickened continental crust[J]. Geochimica et Cosmochimica Acta, 2011, 75(13):3815-3838. DOI URL
[22]	HE Y S, LI S G, HOEFS J, et al. Sr-Nd-Pb isotopic compositions of Early Cretaceous granitoids from the Dabie orogen: constraints on the recycled lower continental crust[J]. Lithos, 2013, 156/157/158/159:204-217.
[23]	WU Y B, ZHENG Y F. Tectonic evolution of a composite collision orogen:an overview on the Qinling-Tongbai-Hong’an-Dabie-Sulu orogenic belt in central China[J]. Gondwana Research, 2013, 23(4):1402-1428. DOI URL
[24]	LIU X C, LI S Z, JAHN B M. Tectonic evolution of the Tongbai-Hong’an orogen in central China:from oceanic subduction/accretion to continent-continent collision[J]. Science China: Earth Sciences, 2015, 58(9):1477-1496. DOI URL
[25]	陈道公, 汪相, 李彬贤, 等. 北大别辉石岩成因: 锆石微区年龄和化学组成[J]. 科学通报, 2001, 46(7):586-590.
[26]	WANG J H, DENG S X. Emplacement age for the mafic-ultramafic plutons in the northern Dabie Mts.(Hubei):zircon U-Pb, Sm-Nd and ⁴⁰Ar/³⁹Ar dating[J]. Science in China Series D: Earth Sciences, 2002, 45(1):1-12.
[27]	WANG Y J, FAN W M, PENG T P, et al. Nature of the Mesozoic lithospheric mantle and tectonic decoupling beneath the Dabie orogen, central China:evidence from ⁴⁰Ar/³⁹Ar geochronology, elemental and Sr-Nd-Pb isotopic compositions of Early Cretaceous mafic igneous rocks[J]. Chemical Geology, 2005, 220(3/4):165-189. DOI URL
[28]	HUANG F, LI S G, DONG F, et al. Recycling of deeply subducted continental crust in the Dabie Mountains, central China[J]. Lithos, 2007, 96(1/2):151-169. DOI URL
[29]	ZHAO Z F, ZHENG Y F, WEI C S, et al. Zircon U-Pb age, element and C-O isotope geochemistry of post-collisional mafic-ultramafic rocks from the Dabie orogen in east-central China[J]. Lithos, 2005, 83(1/2):1-28. DOI URL
[30]	GAO Y, MAO J W, YE H S, et al. Geochronology, geochemistry and Sr-Nd-Pb isotopic constraints on the origin of the Qian’echong porphyry Mo deposit, Dabie orogen, East China[J]. Journal of Asian Earth Sciences, 2014, 85:163-177. DOI URL
[31]	CHEN W, XU Z W, LU X C, et al. Petrogenesis of the Bao’anzhai granite and associated Mo mineralization, western Dabie orogen, east-central China:constraints from zircon U-Pb and molybdenite Re-Os dating, whole-rock geochemistry, and Sr-Nd-Pb-Hf isotopes[J]. International Geology Review, 2013, 55(10):1220-1238. DOI URL
[32]	CHEN W, XU Z W, QIU W H, et al. Petrogenesis of the Yaochong granite and Mo deposit, Western Dabie orogen, eastern-central China:constraints from zircon U-Pb and molybdenite Re-Os ages, whole-rock geochemistry and Sr-Nd-Pb-Hf isotopes[J]. Journal of Asian Earth Sciences, 2015, 103:198-211. DOI URL
[33]	CHEN W, XU Z W, CHEN M H, et al. Multiple sources for the origin of the Early Cretaceous Xinxian granitic batholith and its tectonic implications for the western Dabie orogen, Eastern China[J]. Mineralogy and Petrology, 2016, 110(1):29-41. DOI URL
[34]	高昕宇, 赵太平, 施小斌, 等. 大别山北麓早白垩世商城和达权店岩体的地球化学特征与成因[J]. 地球化学, 2013, 42(4):307-339.
[35]	朱江, 吴昌雄, 彭三国, 等. 西大别山早白垩世谭冲和陈冲花岗岩体U-Pb年龄、地球化学和Sr-Nd-Hf同位素特征: 对岩石成因和下地壳拆沉时限的约束[J]. 地质学报, 2019, 93(7):1671-1686.
[36]	ZHENG Y F. Metamorphic chemical geodynamics in continental subduction zones[J]. Chemical Geology, 2012, 328:5-48. DOI URL
[37]	ZHANG G W, GUO A L, WANG Y J, et al. Tectonics of South China continent and its implications[J]. Science China: Earth Sciences, 2013, 56(11):1804-1828. DOI URL
[38]	徐扬. 扬子北缘随应地块及邻区新元古代900780 Ma岩浆事件及其构造意义[D]. 武汉: 中国地质大学(武汉), 2017.
[39]	湖北地质调查院. 中华人民共和国1∶50 000小河镇幅矿产图[CM]. 武汉: 湖北地质调查院, 2018.
[40]	陈伟, 徐兆文, 李红超, 等. 河南新县花岗岩岩基的岩石成因、来源及对西大别构造演化的启示[J]. 地质学报, 2013, 87(10):1510-1524.
[41]	高阳, 叶会寿, 李永峰, 等. 大别山千鹅冲钼矿区花岗岩的SHRIMP锆石U-Pb年龄、Hf同位素组成及微量元素特征[J]. 岩石学报, 2014, 30(1):49-63.
[42]	万俊, 吴波, 郭盼, 等. 西大别造山带夏店岩体锆石U-Pb年代学、地球化学特征及其A型花岗岩的厘定[J]. 岩石矿物学杂志, 2017, 36(5):633-645.
[43]	朱江, 陕亮, 吴越, 等. 大别山北麓白石坡银矿区花岗斑岩锆石U-Pb年龄、地球化学和Sr-Nd-Hf同位素组成及其地质意义[J]. 地学前缘, 2019, 26(5):317-329.
[44]	DAI L Q, ZHAO Z F, ZHENG Y F, et al. Zircon Hf-O isotope evidence for crust-mantle interaction during continental deep subduction[J]. Earth and Planetary Science Letters, 2011, 308(1/2):229-244. DOI URL
[45]	LI X H, LIU Y, LI Q L, et al. Precise determination of Phanerozoic zircon Pb/Pb age by multicollector SIMS without external standardization[J]. Geochemistry, Geophysics, Geosystems, 2009, 10(4):Q04010.
[46]	SLÁMA J, KOŠLER J, CONDON D J, et al. Plešovice zircon: a new natural reference material for U-Pb and Hf isotopic microanalysis[J]. Chemical Geology, 2008, 249(1/2):1-35. DOI URL
[47]	WIEDENBECK M, ALLÉ P, CORFU F, et al. Three natural zircon standards for U-Th-Pb, Lu-Hf, trace element and REE analyses[J]. Geostandards Newsletter, 1995, 19(1):1-23.
[48]	LI Q L, LI X H, LIU Y, et al. Precise U-Pb and Pb-Pb dating of Phanerozoic baddeleyite by SIMS with oxygen flooding technique[J]. Journal of Analytical Atomic Spectrometry, 2010, 25(7):1107. DOI URL
[49]	STACEY J S, KRAMERS J D. Approximation of terrestrial lead isotope evolution by a two-stage model[J]. Earth and Planetary Science Letters, 1975, 26(2):207-221. DOI URL
[50]	ZONG K Q, KLEMD R, YUAN Y, et al. The assembly of Rodinia: the correlation of early Neoproterozoic (ca. 900 Ma) high-grade metamorphism and continental arc formation in the southern Beishan Orogen, southern Central Asian Orogenic Belt (CAOB)[J]. Precambrian Research, 2017, 290:32-48. DOI URL
[51]	HU Z C, ZHANG W, LIU Y S, et al. “Wave” signal-smoothing and mercury-removing device for laser ablation quadrupole and multiple collector ICPMS analysis: application to lead isotope analysis[J]. Analytical Chemistry, 2015, 87(2):1152-1157. DOI URL
[52]	LIU Y S, GAO S, HU Z C, et al. Continental and oceanic crust recycling-induced melt-peridotite interactions in the trans-North China orogen: U-Pb dating, Hf isotopes and trace elements in zircons from mantle xenoliths[J]. Journal of Petrology, 2010, 51(1/2):537-571. DOI URL
[53]	LIU Y S, HU Z C, GAO S, et al. In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J]. Chemical Geology, 2008, 257(1/2):34-43. DOI URL
[54]	LUDWIG K R. User’s manual for Isoplot 3.00: a geochronological toolkit for microsoft excel[M]. Berkeley: Berkeley Geochronology Center, 2003: 1-74.
[55]	HU Z C, LIU Y S, GAO S, et al. Improved in situ Hf isotope ratio analysis of zircon using newly designed X skimmer cone and jet sample cone in combination with the addition of nitrogen by laser ablation multiple collector ICP-MS[J]. Journal of Analytical Atomic Spectrometry, 2012, 27(9):1391. DOI URL
[56]	HU Z C, LIU Y S, GAO S, et al. A “wire” signal smoothing device for laser ablation inductively coupled plasma mass spectrometry analysis[J]. Spectrochimica Acta Part B: Atomic Spectroscopy, 2012, 78:50-57. DOI URL
[57]	FROST B R, BARNES C G, COLLINS W J, et al. A geochemical classification for granitic rocks[J]. Journal of Petrology, 2001, 42(11):2033-2048. DOI URL
[58]	朱江, 吴昌雄, 彭三国, 等. 大别山皇城山银矿区及外围陈棚组火山岩U-Pb年代学、地球化学和成矿构造背景[J]. 地球科学, 2018, 43(7):2404-2419.
[59]	杨梅珍, 曾键年, 任爱琴, 等. 大别山北缘西段双桥中生代火山岩地球化学及锆石U-Pb同位素年代学[J]. 岩石矿物学杂志, 2012, 31(2):133-144.
[60]	SUN S S, MCDONOUGH W F. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes[J]. Geological Society Special Publication, 1989, 42(1):313-345. DOI URL
[61]	XU Y, POLAT A, DENG X, et al. The 1.97 Ga dioritic block in the Hong’an Terrane, central China: syn-collisional alkaline magmatism at the northern margin of the Yangtze Block[J]. Precambrian Research, 2020, 342:105713.
[62]	BLICHERT-TOFT J, ALBARÈDE F . The Lu-Hf isotope geochemistry of chondrites and the evolution of the mantle-crust system[J]. Earth and Planetary Science Letters, 1997, 148(1/2):243-258. DOI URL
[63]	GRIFFIN W L, PEARSON N J, BELOUSOVA E A, et al. Comment: Hf-isotope heterogeneity in zircon 91500[J]. Chemical Geology, 2006, 233(3/4):358-363. DOI URL
[64]	WU F Y, LIU X C, JI W Q, et al. Highly fractionated granites: recognition and research[J]. Science China: Earth Sciences, 2017, 60(7):1201-1219. DOI URL
[65]	BALLOUARD C, POUJOL M, BOULVAIS P, et al. Nb-Ta fractionation in peraluminous granites: a marker of the magmatic-hydrothermal transition[J]. Geology, 2016, 44(3):231-234. DOI URL
[66]	WHALEN J B, CURRIE K L, CHAPPELL B W. A-type granites: geochemical characteristics, discrimination and petrogenesis[J]. Contributions to Mineralogy and Petrology, 1987, 95(4):407-419. DOI URL
[67]	吴福元, 李献华, 杨进辉, 等. 花岗岩成因研究的若干问题[J]. 岩石学报, 2007, 23(6):1217-1238.
[68]	EBY G N. Chemical subdivision of the A-type granitoids: petrogenetic and tectonic implications[J]. Geology, 1992, 20(7):641. DOI URL
[69]	PÉREZ-SOBA C, VILLASECA C. Petrogenesis of highly fractionated I-type peraluminous granites: La Pedriza pluton (Spanish Central System)[J]. Geologica Acta, 2010, 8(2):131-149.
[70]	BREITER K, GARDENOVÁ N, KANICKY V, et al. Gallium and germanium geochemistry during magmatic fractionation and post-magmatic alteration in different types of granitoids: a case study from the Bohemian Massif (Czech Republic)[J]. Geologica Carpathica, 2013, 64(3):171-180. DOI URL
[71]	张旗, 潘国强, 李承东, 等. 花岗岩构造环境问题: 关于花岗岩研究的思考之三[J]. 岩石学报, 2007, 23(11):2683-2698.
[72]	GAO P, ZHENG Y F, ZHAO Z F . Distinction between S-type and peraluminous I-type granites: zircon versus whole-rock geochemistry[J]. Lithos, 2016, 258/259:77-91. DOI URL
[73]	CLEMENS J D, STEVENS G, FARINA F. The enigmatic sources of I-type granites: the peritectic connexion[J]. Lithos, 2011, 126(3/4):174-181. DOI URL
[74]	GREEN T H, WATSON E B. Crystallization of apatite in natural magmas under high pressure, hydrous conditions, with particular reference to ‘Orogenic’ rock series[J]. Contributions to Mineralogy and Petrology, 1982, 79(1):96-105. DOI URL
[75]	HARRISON T M, WATSON E B. The behavior of apatite during crustal anatexis: equilibrium and kinetic considerations[J]. Geochimica et Cosmochimica Acta, 1984, 48(7):1467-1477. DOI URL
[76]	WOLF M B, LONDON D. Apatite dissolution into peraluminous haplogranitic melts: an experimental study of solubilities and mechanisms[J]. Geochimica et Cosmochimica Acta, 1994, 58(19):4127-4145. DOI URL
[77]	DEFANT M J, DRUMMOND M S. Derivation of some modern arc magmas by melting of young subducted lithosphere[J]. Nature, 1990, 347(6294):662-665. DOI URL
[78]	GAO S, RUDNICK R L, YUAN H L, et al. Recycling lower continental crust in the North China Craton[J]. Nature, 2004, 432(7019):892-897. DOI URL
[79]	ZHANG C, MA C Q, HOLTZ F. Origin of high-Mg adakitic magmatic enclaves from the Meichuan pluton, southern Dabie orogen (central China): implications for delamination of the lower continental crust and melt-mantle interaction[J]. Lithos, 2010, 119(3/4):467-484. DOI URL
[80]	RUDNICK R L, GAO S. Composition of the continental crust[M]//Treatise on geochemistry. Amsterdam: Elsevier, 2003: 1-64.
[81]	PERTERMANN M, HIRSCHMANN M M, HAMETNER K, et al. Experimental determination of trace element partitioning between garnet and silica-rich liquid during anhydrous partial melting of MORB-like eclogite[J]. Geochemistry, Geophysics, Geosystems, 2004, 5(5): Q05A01.
[82]	XIONG X L, ADAM J, GREEN T H. Rutile stability and rutile/melt HFSE partitioning during partial melting of hydrous basalt: implications for TTG genesis[J]. Chemical Geology, 2005, 218(3/4):339-359. DOI URL
[83]	ZHAO Z F, ZHENG Y F, WEI C S, et al. Post-collisional granitoids from the Dabie orogen in China: zircon U-Pb age, element and O isotope evidence for recycling of subducted continental crust[J]. Lithos, 2006, 93(3):248-272. DOI URL

样品点号	w_B/10^-6		Th/U	²⁰⁷Pb/²⁰⁶Pb	±1σ	²⁰⁷Pb/²³⁵U	±1σ	²⁰⁶Pb/²³⁸U	±1σ	t_207/206/ Ma	±1σ	t_207/235/ Ma	±1σ	t_206/238/ Ma	±1σ
样品点号	Th	U	Th/U	²⁰⁷Pb/²⁰⁶Pb	±1σ	²⁰⁷Pb/²³⁵U	±1σ	²⁰⁶Pb/²³⁸U	±1σ	t_207/206/ Ma	±1σ	t_207/235/ Ma	±1σ	t_206/238/ Ma	±1σ
DW131
1	162	284	0.57	0.047 5	0.028 0	0.131 1	0.032 0	0.020 0	0.015 6	76	65	125	4	128	2
2	225	250	0.90	0.050 2	0.025 3	0.138 7	0.030 7	0.020 0	0.017 4	205	58	132	4	128	2
3	132	209	0.63	0.062 7	0.936 1	0.181 3	0.936 7	0.021 0	0.033 7	697	1 279	169	158	134	4
4	129	263	0.49	0.047 9	0.025 1	0.133 0	0.031 3	0.020 1	0.018 6	93	58	127	4	129	2
5	283	371	0.76	0.048 9	0.020 8	0.136 7	0.026 5	0.020 3	0.016 4	145	48	130	3	129	2
6	218	391	0.56	0.049 0	0.029 0	0.134 6	0.035 8	0.019 9	0.020 9	148	67	128	4	127	3
7	120	230	0.52	0.049 1	0.031 4	0.139 2	0.035 0	0.020 6	0.015 6	153	72	132	4	131	2
8	666	622	1.07	0.048 4	0.019 5	0.133 8	0.025 5	0.020 0	0.016 4	121	45	127	3	128	2
9	143	188	0.76	0.050 0	0.039 1	0.138 6	0.042 0	0.020 1	0.015 4	194	88	132	5	128	2
10	64	120	0.53	0.126 3	0.011 0	3.614 5	0.028 5	0.207 6	0.026 3	2 047	19	1 553	23	1 216	29
11	17	66	0.27	0.146 5	0.011 0	5.921 4	0.018 7	0.293 1	0.015 1	2 306	19	1 964	16	1 657	22
12	167	168	1.00	0.048 7	0.050 9	0.136 8	0.053 2	0.020 4	0.015 6	135	115	130	7	130	2
13	157	234	0.67	0.048 4	0.026 0	0.138 4	0.030 4	0.020 7	0.015 7	120	60	132	4	132	2
14	123	216	0.57	0.048 2	0.027 1	0.136 9	0.032 1	0.020 6	0.017 2	108	63	130	4	132	2
15	437	556	0.79	0.049 6	0.023 3	0.133 0	0.027 7	0.019 4	0.015 0	178	53	127	3	124	2
16	130	256	0.51	0.048 4	0.024 8	0.138 1	0.029 2	0.020 7	0.015 3	121	57	131	4	132	2
17	151	168	0.90	0.049 6	0.038 7	0.135 9	0.044 0	0.019 9	0.021 1	178	88	129	5	127	3
18	136	268	0.51	0.050 0	0.024 3	0.139 1	0.028 7	0.020 2	0.015 4	193	55	132	4	129	2
19	842	1 103	0.76	0.048 3	0.018 6	0.140 0	0.024 2	0.021 0	0.015 4	113	43	133	3	134	2
20	117	162	0.72	0.047 7	0.037 8	0.137 0	0.041 0	0.020 8	0.015 9	86	87	130	5	133	2
DW223
1	129	122	1.06	0.071 8	0.006 2	0.217 0	0.016 3	0.022 9	0.000 5	981	178	199	14	146	3
2	102	131	0.78	0.041 8	0.003 1	0.116 9	0.008 5	0.020 3	0.000 4	—	—	112	8	130	23
3	111	121	0.91	0.053 9	0.006 2	0.127 7	0.014 0	0.018 1	0.000 9	369	261	122	13	116	5
4	286	293	0.98	0.049 8	0.004 4	0.133 5	0.008 7	0.019 1	0.000 4	183	206	127	8	122	3
5	213	225	0.95	0.045 5	0.002 6	0.124 9	0.007 0	0.020 0	0.000 4	—	—	120	6	128	2
6	66	92	0.72	0.054 0	0.005 5	0.136 1	0.013 1	0.019 0	0.000 6	372	233	130	12	121	4
7	131	147	0.89	0.050 9	0.003 6	0.134 6	0.009 1	0.019 4	0.000 4	239	165	128	8	124	3
8	118	145	0.81	0.051 6	0.003 8	0.144 5	0.010 0	0.020 5	0.000 5	333	170	137	9	131	3
9	547	548	1.00	0.048 2	0.001 8	0.137 5	0.005 1	0.020 5	0.000 3	109	87	131	5	131	2
10	6 782	2 370	2.86	0.046 0	0.001 8	0.116 9	0.004 6	0.018 2	0.000 3	—	—	112	4	117	2
11	158	192	0.82	0.046 5	0.002 7	0.130 0	0.007 4	0.020 4	0.000 3	33	133	124	7	130	2
12	757	740	1.02	0.048 6	0.001 6	0.133 6	0.004 7	0.019 9	0.000 3	128	75	127	4	127	2
13	469	439	1.07	0.051 5	0.002 3	0.144 2	0.005 5	0.020 2	0.000 3	261	106	137	5	129	2
14	117	157	0.74	0.054 5	0.003 3	0.140 6	0.007 9	0.019 0	0.000 4	391	134	134	7	122	3
15	121	134	0.90	0.051 4	0.004 5	0.132 6	0.010 2	0.019 6	0.000 5	257	206	126	9	125	3
16	373	313	1.19	0.045 7	0.003 0	0.125 6	0.007 0	0.019 7	0.000 4	—	—	120	6	126	2
17	138	165	0.84	0.046 8	0.003 0	0.125 2	0.007 7	0.020 0	0.000 4	39	148	120	7	128	3
18	135	173	0.78	0.045 5	0.003 2	0.125 3	0.008 6	0.020 3	0.000 4	—	—	120	8	129	3
19	104	118	0.88	0.051 2	0.006 1	0.129 0	0.012 4	0.019 2	0.000 7	250	256	123	11	123	4
20	137	234	0.58	0.053 2	0.004 5	0.143 4	0.009 8	0.020 4	0.000 6	345	193	136	9	130	4
21	106	216	0.49	0.051 6	0.003 3	0.136 7	0.007 5	0.020 0	0.000 4	333	144	130	7	128	2
22	70	99	0.70	0.059 1	0.008 4	0.146 4	0.013 8	0.020 7	0.000 6	569	310	139	12	132	4
23	107	120	0.89	0.050 6	0.006 4	0.132 3	0.012 5	0.020 3	0.000 7	220	280	126	11	129	4
24	113	150	0.76	0.051 9	0.005 1	0.136 0	0.012 3	0.018 9	0.000 6	280	232	129	11	121	4
25	89	125	0.71	0.047 4	0.004 7	0.121 4	0.011 8	0.019 1	0.000 5	78	209	116	11	122	3
26	268	168	1.59	0.116 4	0.009 5	0.389 2	0.036 8	0.022 8	0.000 5	1 902	148	334	27	145	3
27	739	1 251	0.59	0.051 5	0.001 7	0.147 3	0.005 1	0.020 6	0.000 3	265	76	140	5	131	2
28	426	458	0.93	0.048 4	0.002 6	0.135 8	0.007 0	0.020 6	0.000 4	120	122	129	6	131	2
29	485	442	1.10	0.049 3	0.003 1	0.129 8	0.006 1	0.019 1	0.000 3	165	144	124	5	122	2
30	3 328	7 382	0.45	0.062 3	0.001 5	0.188 7	0.004 3	0.021 9	0.000 3	683	56	176	4	139	2
31	144	188	0.76	0.047 8	0.002 9	0.131 3	0.007 8	0.020 1	0.000 4	87	146	125	7	128	3
32	135	177	0.76	0.052 3	0.004 2	0.142 9	0.010 9	0.020 5	0.000 5	298	183	136	10	131	3

样品点号	w_B/10^-6		Th/U	²⁰⁷Pb/²⁰⁶Pb	±1σ	²⁰⁷Pb/²³⁵U	±1σ	²⁰⁶Pb/²³⁸U	±1σ	t_207/206/ Ma	±1σ	t_207/235/ Ma	±1σ	t_206/238/ Ma	±1σ
样品点号	Th	U	Th/U	²⁰⁷Pb/²⁰⁶Pb	±1σ	²⁰⁷Pb/²³⁵U	±1σ	²⁰⁶Pb/²³⁸U	±1σ	t_207/206/ Ma	±1σ	t_207/235/ Ma	±1σ	t_206/238/ Ma	±1σ
DW131
1	162	284	0.57	0.047 5	0.028 0	0.131 1	0.032 0	0.020 0	0.015 6	76	65	125	4	128	2
2	225	250	0.90	0.050 2	0.025 3	0.138 7	0.030 7	0.020 0	0.017 4	205	58	132	4	128	2
3	132	209	0.63	0.062 7	0.936 1	0.181 3	0.936 7	0.021 0	0.033 7	697	1 279	169	158	134	4
4	129	263	0.49	0.047 9	0.025 1	0.133 0	0.031 3	0.020 1	0.018 6	93	58	127	4	129	2
5	283	371	0.76	0.048 9	0.020 8	0.136 7	0.026 5	0.020 3	0.016 4	145	48	130	3	129	2
6	218	391	0.56	0.049 0	0.029 0	0.134 6	0.035 8	0.019 9	0.020 9	148	67	128	4	127	3
7	120	230	0.52	0.049 1	0.031 4	0.139 2	0.035 0	0.020 6	0.015 6	153	72	132	4	131	2
8	666	622	1.07	0.048 4	0.019 5	0.133 8	0.025 5	0.020 0	0.016 4	121	45	127	3	128	2
9	143	188	0.76	0.050 0	0.039 1	0.138 6	0.042 0	0.020 1	0.015 4	194	88	132	5	128	2
10	64	120	0.53	0.126 3	0.011 0	3.614 5	0.028 5	0.207 6	0.026 3	2 047	19	1 553	23	1 216	29
11	17	66	0.27	0.146 5	0.011 0	5.921 4	0.018 7	0.293 1	0.015 1	2 306	19	1 964	16	1 657	22
12	167	168	1.00	0.048 7	0.050 9	0.136 8	0.053 2	0.020 4	0.015 6	135	115	130	7	130	2
13	157	234	0.67	0.048 4	0.026 0	0.138 4	0.030 4	0.020 7	0.015 7	120	60	132	4	132	2
14	123	216	0.57	0.048 2	0.027 1	0.136 9	0.032 1	0.020 6	0.017 2	108	63	130	4	132	2
15	437	556	0.79	0.049 6	0.023 3	0.133 0	0.027 7	0.019 4	0.015 0	178	53	127	3	124	2
16	130	256	0.51	0.048 4	0.024 8	0.138 1	0.029 2	0.020 7	0.015 3	121	57	131	4	132	2
17	151	168	0.90	0.049 6	0.038 7	0.135 9	0.044 0	0.019 9	0.021 1	178	88	129	5	127	3
18	136	268	0.51	0.050 0	0.024 3	0.139 1	0.028 7	0.020 2	0.015 4	193	55	132	4	129	2
19	842	1 103	0.76	0.048 3	0.018 6	0.140 0	0.024 2	0.021 0	0.015 4	113	43	133	3	134	2
20	117	162	0.72	0.047 7	0.037 8	0.137 0	0.041 0	0.020 8	0.015 9	86	87	130	5	133	2
DW223
1	129	122	1.06	0.071 8	0.006 2	0.217 0	0.016 3	0.022 9	0.000 5	981	178	199	14	146	3
2	102	131	0.78	0.041 8	0.003 1	0.116 9	0.008 5	0.020 3	0.000 4	—	—	112	8	130	23
3	111	121	0.91	0.053 9	0.006 2	0.127 7	0.014 0	0.018 1	0.000 9	369	261	122	13	116	5
4	286	293	0.98	0.049 8	0.004 4	0.133 5	0.008 7	0.019 1	0.000 4	183	206	127	8	122	3
5	213	225	0.95	0.045 5	0.002 6	0.124 9	0.007 0	0.020 0	0.000 4	—	—	120	6	128	2
6	66	92	0.72	0.054 0	0.005 5	0.136 1	0.013 1	0.019 0	0.000 6	372	233	130	12	121	4
7	131	147	0.89	0.050 9	0.003 6	0.134 6	0.009 1	0.019 4	0.000 4	239	165	128	8	124	3
8	118	145	0.81	0.051 6	0.003 8	0.144 5	0.010 0	0.020 5	0.000 5	333	170	137	9	131	3
9	547	548	1.00	0.048 2	0.001 8	0.137 5	0.005 1	0.020 5	0.000 3	109	87	131	5	131	2
10	6 782	2 370	2.86	0.046 0	0.001 8	0.116 9	0.004 6	0.018 2	0.000 3	—	—	112	4	117	2
11	158	192	0.82	0.046 5	0.002 7	0.130 0	0.007 4	0.020 4	0.000 3	33	133	124	7	130	2
12	757	740	1.02	0.048 6	0.001 6	0.133 6	0.004 7	0.019 9	0.000 3	128	75	127	4	127	2
13	469	439	1.07	0.051 5	0.002 3	0.144 2	0.005 5	0.020 2	0.000 3	261	106	137	5	129	2
14	117	157	0.74	0.054 5	0.003 3	0.140 6	0.007 9	0.019 0	0.000 4	391	134	134	7	122	3
15	121	134	0.90	0.051 4	0.004 5	0.132 6	0.010 2	0.019 6	0.000 5	257	206	126	9	125	3
16	373	313	1.19	0.045 7	0.003 0	0.125 6	0.007 0	0.019 7	0.000 4	—	—	120	6	126	2
17	138	165	0.84	0.046 8	0.003 0	0.125 2	0.007 7	0.020 0	0.000 4	39	148	120	7	128	3
18	135	173	0.78	0.045 5	0.003 2	0.125 3	0.008 6	0.020 3	0.000 4	—	—	120	8	129	3
19	104	118	0.88	0.051 2	0.006 1	0.129 0	0.012 4	0.019 2	0.000 7	250	256	123	11	123	4
20	137	234	0.58	0.053 2	0.004 5	0.143 4	0.009 8	0.020 4	0.000 6	345	193	136	9	130	4
21	106	216	0.49	0.051 6	0.003 3	0.136 7	0.007 5	0.020 0	0.000 4	333	144	130	7	128	2
22	70	99	0.70	0.059 1	0.008 4	0.146 4	0.013 8	0.020 7	0.000 6	569	310	139	12	132	4
23	107	120	0.89	0.050 6	0.006 4	0.132 3	0.012 5	0.020 3	0.000 7	220	280	126	11	129	4
24	113	150	0.76	0.051 9	0.005 1	0.136 0	0.012 3	0.018 9	0.000 6	280	232	129	11	121	4
25	89	125	0.71	0.047 4	0.004 7	0.121 4	0.011 8	0.019 1	0.000 5	78	209	116	11	122	3
26	268	168	1.59	0.116 4	0.009 5	0.389 2	0.036 8	0.022 8	0.000 5	1 902	148	334	27	145	3
27	739	1 251	0.59	0.051 5	0.001 7	0.147 3	0.005 1	0.020 6	0.000 3	265	76	140	5	131	2
28	426	458	0.93	0.048 4	0.002 6	0.135 8	0.007 0	0.020 6	0.000 4	120	122	129	6	131	2
29	485	442	1.10	0.049 3	0.003 1	0.129 8	0.006 1	0.019 1	0.000 3	165	144	124	5	122	2
30	3 328	7 382	0.45	0.062 3	0.001 5	0.188 7	0.004 3	0.021 9	0.000 3	683	56	176	4	139	2
31	144	188	0.76	0.047 8	0.002 9	0.131 3	0.007 8	0.020 1	0.000 4	87	146	125	7	128	3
32	135	177	0.76	0.052 3	0.004 2	0.142 9	0.010 9	0.020 5	0.000 5	298	183	136	10	131	3

样品点号	¹⁷⁶Hf/¹⁷⁷Hf	±1σ	¹⁷⁶Lu/¹⁷⁷Hf	¹⁷⁶Yb/¹⁷⁷Hf	年龄t/ Ma	(¹⁷⁶Hf/¹⁷⁷Hf)_i	ε_Hf(t)	±1σ	T_DM1/ Ma	±1σ	f_Lu/Hf	T_DM2/ Ma	±1σ
DW131
1	0.282 142	0.000 009	0.000 937	0.026 043	129	0.282 140	-19.5	0.3	1 561	24	-0.97	2 129	34
2	0.282 153	0.000 009	0.000 845	0.023 407	129	0.282 151	-19.1	0.3	1 542	25	-0.97	2 108	35
3	0.282 151	0.000 009	0.001 404	0.039 814	129	0.282 148	-19.3	0.3	1 568	25	-0.96	2 114	34
4	0.282 162	0.000 009	0.001 325	0.037 288	129	0.282 158	-18.9	0.3	1 550	26	-0.96	2 094	36
5	0.282 164	0.000 010	0.001 371	0.038 419	129	0.282 161	-18.8	0.4	1 548	28	-0.96	2 088	39
6	0.282 198	0.000 009	0.001 488	0.042 519	129	0.282 195	-17.6	0.3	1 505	25	-0.96	2 023	34
7	0.282 155	0.000 008	0.001 321	0.036 973	129	0.282 152	-19.1	0.3	1 559	23	-0.96	2 107	32
8	0.282 163	0.000 009	0.001 093	0.030 340	129	0.282 160	-18.8	0.3	1 539	24	-0.97	2 090	33
9	0.282 142	0.000 009	0.001 044	0.029 918	129	0.282 140	-19.5	0.3	1 565	25	-0.97	2 130	35
10	0.281 566	0.000 010	0.000 752	0.020 481	2 047	0.281 537	2.1	0.4	2 343	28	-0.98	2 463	39
11	0.282 150	0.000 009	0.000 951	0.028 114	2 306	0.282 108	28.3	0.3	1 551	25	-0.97	1 251	35
12	0.282 179	0.000 010	0.000 860	0.024 147	129	0.282 177	-18.2	0.3	1 506	27	-0.97	2 057	38
13	0.282 191	0.000 010	0.001 065	0.030 559	129	0.282 189	-17.8	0.3	1 498	27	-0.97	2 035	37
15	0.282 279	0.000 009	0.001 352	0.038 037	129	0.282 276	-14.7	0.3	1 385	25	-0.96	1 865	35
16	0.282 271	0.000 008	0.001 300	0.035 203	129	0.282 268	-15.0	0.3	1 395	22	-0.96	1 881	31
17	0.282 167	0.000 009	0.000 920	0.027 095	129	0.282 165	-18.6	0.3	1 525	24	-0.97	2 081	33
DW223
1	0.282 142	0.000 010	0.000 556	0.019 207	128	0.282 140	-19.5	0.3	1 546	26	-0.98	2 130	37
2	0.282 123	0.000 009	0.000 772	0.028 102	128	0.282 121	-20.2	0.3	1 581	24	-0.98	2 168	34
3	0.282 115	0.000 015	0.001 524	0.050 106	128	0.282 111	-20.6	0.5	1 624	42	-0.95	2 185	58
4	0.282 067	0.000 024	0.001 027	0.039 545	128	0.282 064	-22.2	0.9	1 670	67	-0.97	2 277	94
5	0.282 129	0.000 029	0.001 015	0.037 633	128	0.282 126	-20.0	1.0	1 583	81	-0.97	2 157	113
6	0.282 236	0.000 426	0.000 661	0.028 500	128	0.282 234	-16.2	15.1	1 420	1 177	-0.98	1 947	1 657
7	0.276 354	0.005 555	0.000 920	0.087 575	128	0.276 352	-224.3	196.5	9 046	13 409	-0.97	12 594	18 745
8	0.282 087	0.000 015	0.000 730	0.025 867	128	0.282 086	-21.5	0.5	1 628	40	-0.98	2 236	57
9	0.282 003	0.000 012	0.000 663	0.022 499	128	0.282 001	-24.5	0.4	1 741	32	-0.98	2 399	46
10	0.282 132	0.000 011	0.000 594	0.021 509	128	0.282 131	-19.9	0.4	1 561	31	-0.98	2 148	44
11	0.282 096	0.000 009	0.000 990	0.036 949	128	0.282 094	-21.2	0.3	1 627	24	-0.97	2 220	34
12	0.282 076	0.000 010	0.001 346	0.051 359	128	0.282 073	-21.9	0.4	1 671	29	-0.96	2 261	39
13	0.282 096	0.000 010	0.000 601	0.022 104	128	0.282 094	-21.2	0.3	1 611	27	-0.98	2 219	38
14	0.282 091	0.000 014	0.001 394	0.045 250	128	0.282 087	-21.4	0.5	1 652	39	-0.96	2 232	54
15	0.282 088	0.000 015	0.000 983	0.035 545	128	0.282 086	-21.5	0.5	1 638	41	-0.97	2 235	57
16	0.282 069	0.000 013	0.001 128	0.041 753	128	0.282 066	-22.1	0.4	1 671	35	-0.97	2 272	49
17	0.282 108	0.000 009	0.000 685	0.024 523	128	0.282 107	-20.7	0.3	1 597	24	-0.98	2 195	34
18	0.282 086	0.000 011	0.000 401	0.013 957	128	0.282 085	-21.5	0.4	1 617	29	-0.99	2 238	42
19	0.282 089	0.000 010	0.000 870	0.030 801	128	0.282 087	-21.4	0.4	1 632	28	-0.97	2 233	39
20	0.282 126	0.000 013	0.001 046	0.038 928	128	0.282 123	-20.1	0.5	1 588	36	-0.97	2 162	50
21	0.282 073	0.000 014	0.000 674	0.023 078	128	0.282 071	-22.0	0.5	1 646	38	-0.98	2 264	54
22	0.282 112	0.000 014	0.000 593	0.020 506	128	0.282 110	-20.6	0.5	1 589	38	-0.98	2 188	54
23	0.282 094	0.000 010	0.000 516	0.018 015	128	0.282 093	-21.2	0.4	1 610	27	-0.98	2 221	39
25	0.282 089	0.000 011	0.000 769	0.027 362	128	0.282 087	-21.4	0.4	1 628	32	-0.98	2 233	45
26	0.282 230	0.000 016	0.001 219	0.043 431	128	0.282 227	-16.5	0.6	1 450	46	-0.96	1 961	64
28	0.282 131	0.000 009	0.001 050	0.036 584	128	0.282 128	-20.0	0.3	1 582	24	-0.97	2 153	33
31	0.282 072	0.000 010	0.000 682	0.024 457	128	0.282 070	-22.0	0.3	1 647	27	-0.98	2 265	38

样品点号	¹⁷⁶Hf/¹⁷⁷Hf	±1σ	¹⁷⁶Lu/¹⁷⁷Hf	¹⁷⁶Yb/¹⁷⁷Hf	年龄t/ Ma	(¹⁷⁶Hf/¹⁷⁷Hf)_i	ε_Hf(t)	±1σ	T_DM1/ Ma	±1σ	f_Lu/Hf	T_DM2/ Ma	±1σ
DW131
1	0.282 142	0.000 009	0.000 937	0.026 043	129	0.282 140	-19.5	0.3	1 561	24	-0.97	2 129	34
2	0.282 153	0.000 009	0.000 845	0.023 407	129	0.282 151	-19.1	0.3	1 542	25	-0.97	2 108	35
3	0.282 151	0.000 009	0.001 404	0.039 814	129	0.282 148	-19.3	0.3	1 568	25	-0.96	2 114	34
4	0.282 162	0.000 009	0.001 325	0.037 288	129	0.282 158	-18.9	0.3	1 550	26	-0.96	2 094	36
5	0.282 164	0.000 010	0.001 371	0.038 419	129	0.282 161	-18.8	0.4	1 548	28	-0.96	2 088	39
6	0.282 198	0.000 009	0.001 488	0.042 519	129	0.282 195	-17.6	0.3	1 505	25	-0.96	2 023	34
7	0.282 155	0.000 008	0.001 321	0.036 973	129	0.282 152	-19.1	0.3	1 559	23	-0.96	2 107	32
8	0.282 163	0.000 009	0.001 093	0.030 340	129	0.282 160	-18.8	0.3	1 539	24	-0.97	2 090	33
9	0.282 142	0.000 009	0.001 044	0.029 918	129	0.282 140	-19.5	0.3	1 565	25	-0.97	2 130	35
10	0.281 566	0.000 010	0.000 752	0.020 481	2 047	0.281 537	2.1	0.4	2 343	28	-0.98	2 463	39
11	0.282 150	0.000 009	0.000 951	0.028 114	2 306	0.282 108	28.3	0.3	1 551	25	-0.97	1 251	35
12	0.282 179	0.000 010	0.000 860	0.024 147	129	0.282 177	-18.2	0.3	1 506	27	-0.97	2 057	38
13	0.282 191	0.000 010	0.001 065	0.030 559	129	0.282 189	-17.8	0.3	1 498	27	-0.97	2 035	37
15	0.282 279	0.000 009	0.001 352	0.038 037	129	0.282 276	-14.7	0.3	1 385	25	-0.96	1 865	35
16	0.282 271	0.000 008	0.001 300	0.035 203	129	0.282 268	-15.0	0.3	1 395	22	-0.96	1 881	31
17	0.282 167	0.000 009	0.000 920	0.027 095	129	0.282 165	-18.6	0.3	1 525	24	-0.97	2 081	33
DW223
1	0.282 142	0.000 010	0.000 556	0.019 207	128	0.282 140	-19.5	0.3	1 546	26	-0.98	2 130	37
2	0.282 123	0.000 009	0.000 772	0.028 102	128	0.282 121	-20.2	0.3	1 581	24	-0.98	2 168	34
3	0.282 115	0.000 015	0.001 524	0.050 106	128	0.282 111	-20.6	0.5	1 624	42	-0.95	2 185	58
4	0.282 067	0.000 024	0.001 027	0.039 545	128	0.282 064	-22.2	0.9	1 670	67	-0.97	2 277	94
5	0.282 129	0.000 029	0.001 015	0.037 633	128	0.282 126	-20.0	1.0	1 583	81	-0.97	2 157	113
6	0.282 236	0.000 426	0.000 661	0.028 500	128	0.282 234	-16.2	15.1	1 420	1 177	-0.98	1 947	1 657
7	0.276 354	0.005 555	0.000 920	0.087 575	128	0.276 352	-224.3	196.5	9 046	13 409	-0.97	12 594	18 745
8	0.282 087	0.000 015	0.000 730	0.025 867	128	0.282 086	-21.5	0.5	1 628	40	-0.98	2 236	57
9	0.282 003	0.000 012	0.000 663	0.022 499	128	0.282 001	-24.5	0.4	1 741	32	-0.98	2 399	46
10	0.282 132	0.000 011	0.000 594	0.021 509	128	0.282 131	-19.9	0.4	1 561	31	-0.98	2 148	44
11	0.282 096	0.000 009	0.000 990	0.036 949	128	0.282 094	-21.2	0.3	1 627	24	-0.97	2 220	34
12	0.282 076	0.000 010	0.001 346	0.051 359	128	0.282 073	-21.9	0.4	1 671	29	-0.96	2 261	39
13	0.282 096	0.000 010	0.000 601	0.022 104	128	0.282 094	-21.2	0.3	1 611	27	-0.98	2 219	38
14	0.282 091	0.000 014	0.001 394	0.045 250	128	0.282 087	-21.4	0.5	1 652	39	-0.96	2 232	54
15	0.282 088	0.000 015	0.000 983	0.035 545	128	0.282 086	-21.5	0.5	1 638	41	-0.97	2 235	57
16	0.282 069	0.000 013	0.001 128	0.041 753	128	0.282 066	-22.1	0.4	1 671	35	-0.97	2 272	49
17	0.282 108	0.000 009	0.000 685	0.024 523	128	0.282 107	-20.7	0.3	1 597	24	-0.98	2 195	34
18	0.282 086	0.000 011	0.000 401	0.013 957	128	0.282 085	-21.5	0.4	1 617	29	-0.99	2 238	42
19	0.282 089	0.000 010	0.000 870	0.030 801	128	0.282 087	-21.4	0.4	1 632	28	-0.97	2 233	39
20	0.282 126	0.000 013	0.001 046	0.038 928	128	0.282 123	-20.1	0.5	1 588	36	-0.97	2 162	50
21	0.282 073	0.000 014	0.000 674	0.023 078	128	0.282 071	-22.0	0.5	1 646	38	-0.98	2 264	54
22	0.282 112	0.000 014	0.000 593	0.020 506	128	0.282 110	-20.6	0.5	1 589	38	-0.98	2 188	54
23	0.282 094	0.000 010	0.000 516	0.018 015	128	0.282 093	-21.2	0.4	1 610	27	-0.98	2 221	39
25	0.282 089	0.000 011	0.000 769	0.027 362	128	0.282 087	-21.4	0.4	1 628	32	-0.98	2 233	45
26	0.282 230	0.000 016	0.001 219	0.043 431	128	0.282 227	-16.5	0.6	1 450	46	-0.96	1 961	64
28	0.282 131	0.000 009	0.001 050	0.036 584	128	0.282 128	-20.0	0.3	1 582	24	-0.97	2 153	33
31	0.282 072	0.000 010	0.000 682	0.024 457	128	0.282 070	-22.0	0.3	1 647	27	-0.98	2 265	38

样品	组分含量/%																																														Mg^#			A/CNK			A/NK
样品	SiO₂			TiO₂			Al₂O₃			Fe₂O₃			FeO			MnO			MgO			CaO			Na₂O			K₂O			P₂O₅			H₂O			CO₂				LOI			Total			Mg^#			A/CNK			A/NK
DW113	63.73			0.51			14.19			1.29			2.02			0.05			1.75			2.90			3.16			4.58			0.32			1.11			3.8				5.30			99.39			50			0.92			1.40
DW114	63.07			0.52			13.95			1.50			1.92			0.06			1.82			3.36			3.01			4.54			0.34			1.21			4.01				5.89			99.32			50			0.87			1.41
DW223	66.66			0.49			14.63			2.90			0.43			0.05			0.47			2.70			2.88			5.03			0.28			1.54			1.34				3.47			99.39			22			0.97			1.44
DW224	62.32			0.53			14.13			0.68			2.77			0.06			1.84			3.32			2.58			4.69			0.32			1.54			4.83				6.10			99.60			49			0.92			1.51
DW225	69.93			0.42			14.72			2.09			0.55			0.05			0.42			0.87			3.27			5.47			0.21			1.24			0.39				1.61			99.63			24			1.14			1.30
DW226	73.22			0.27			14.38			1.95			0.23			0.02			0.57			0.16			1.41			5.26			0.12			1.97			0.06				2.03			99.62			34			1.73			1.79
DW227	66.55			0.51			14.42			2.18			1.03			0.05			0.87			2.49			3.25			4.51			0.25			1.52			1.75				3.64			99.38			34			0.98			1.41
DW228	66.60			0.42			14.1			1.13			1.45			0.04			1.19			2.29			3.71			4.58			0.20			0.90			2.77				4.06			99.40			46			0.92			1.27
DW229	69.61			0.45			14.58			2.26			0.6			0.05			0.59			1.07			3.11			5.03			0.23			1.46			0.62				2.04			99.66			29			1.16			1.38
样品	元素含量/10^-6
样品	Sc		V			Cr			Co			Ni			Cu			Zn			Ga			Rb			Sr			Y			Zr			Nb			Cs			Ba			La			Ce			Pr			Nd		Sm
DW113	7.99		60.0			57.9			9.91			35.3			18.6			61.7			19.1			65.8			724			13.1			224			10.9			6.55			1578			57.4			105			11.8			41.4		6.37
DW114	7.43		61.2			55.3			9.87			32.1			8.50			56.9			19.2			85.1			628			12.8			229			10.6			8.34			1909			55.0			101			11.3			39.8		6.15
DW223	6.51		55.6			38.6			8.91			26.1			5.60			49.6			19.4			74.0			268			13.7			225			12.2			7.64			1858			58.9			106			11.8			41.3		6.18
DW224	7.29		58.8			51.9			9.38			32.1			5.90			54.1			18.4			83.4			454			13.4			224			11.8			8.00			1508			57.6			104			11.7			40.8		6.20
DW225	5.13		44.3			31.9			6.12			17.3			18.9			47.3			19.1			84.2			293			13.3			205			12.6			5.31			1439			55.7			100			10.7			36.4		5.51
DW226	3.88		21.7			9.60			2.55			3.2			16.2			39.7			20.1			157.9			78.5			11.8			185			16.6			9.62			1917			45.0			78.3			9.71			33.1		4.66
DW227	6.47		53.0			40.1			8.74			25.3			23.5			50.3			19.6			98.5			261			14.0			197			11.3			4.46			1507			56.1			102			11.2			38.6		6.03
DW228	5.17		42.2			24.0			6.16			16.8			11.0			39.3			17.8			82.2			421			12.6			193			10.4			3.31			1605			52.8			93.7			10.2			34.7		5.40
DW229	5.34		49.7			29.4			7.26			20.0			11.4			49.8			19.6			90.4			242			14.8			210			11.9			4.6			1327			60.3			107			11.2			38.2		5.94
样品	元素含量/10^-6																																																			(La/Yb)_N			Eu/Eu^*
样品	Eu	Gd			Tb			Dy			Ho			Er			Tm			Yb			Lu			Hf			Ta			Pb			Th			U		Pb			Th			U			ΣREE			(La/Yb)_N			Eu/Eu^*
DW113	1.67	4.46			0.57			2.71			0.49			1.29			0.19			1.24			0.18			5.10			0.79			20.0			13.0			2.41		20.0			13.0			2.41			235			33.1			0.91
DW114	1.60	4.45			0.56			2.57			0.46			1.22			0.18			1.21			0.17			5.27			0.75			19.5			13.1			2.38		19.5			13.1			2.38			226			32.6			0.89
DW223	1.57	4.44			0.57			2.70			0.48			1.28			0.19			1.23			0.18			5.18			0.88			15.1			13.9			2.42		15.1			13.9			2.42			237			34.2			0.87
DW224	1.65	4.38			0.58			2.64			0.48			1.28			0.19			1.22			0.18			5.10			0.83			24.5			12.9			2.25		24.5			12.9			2.25			233			33.9			0.92
DW225	1.35	4.02			0.54			2.61			0.48			1.28			0.19			1.27			0.18			4.54			1.20			27.1			14.6			2.23		27.1			14.6			2.23			220			31.4			0.84
DW226	1.03	3.23			0.45			2.24			0.40			1.08			0.16			1.09			0.16			3.97			1.40			28.3			15.3			3.76		28.3			15.3			3.76			181			29.6			0.77
DW227	1.49	4.43			0.59			2.84			0.50			1.30			0.20			1.26			0.19			4.54			0.88			15.7			13.9			2.46		15.7			13.9			2.46			227			32.0			0.84
DW228	1.30	3.89			0.51			2.47			0.44			1.17			0.18			1.20			0.17			4.54			0.88			19.7			13.6			2.46		19.7			13.6			2.46			208			31.6			0.82
DW229	1.39	4.30			0.58			2.81			0.52			1.35			0.21			1.37			0.20			4.86			1.01			20.8			15.6			2.55		20.8			15.6			2.55			235			31.6			0.80