图1 华北克拉通中-新元古代拗拉槽分布图(a)(据文献[25]修改)与沁水盆地构造位置图(b)

Fig.1 Distribution map of Meso-Neoproterozoic troughs in the North China Craton (a) (modified after [25]) and tectonic location map of the Qinshui Basin (b)

图2 华北克拉通燕辽裂陷槽和熊耳裂陷槽中-新元古界地层对比剖面图(据文献[54]修改)

Fig.2 Cross-sectional map of the Meso-Neoproterozoic stratigraphic correlation between the Yanliao Basin and the Xiong’er Basin in the North China Craton. Modified after [54].

图3 华北克拉通熊耳裂陷槽和燕辽裂陷槽长城纪构造演化模式图(据文献[47]修改)

Fig.3 Tectonic evolution model of the Xiong’er Basin and Yanliao Basin in the North China Craton during the Changcheng Period. Modified after [47].

图4 沁水盆地东缘前寒武系野外露头地层对比剖面(据文献[46]修改;露头位置见图1b)

Fig.4 Comparative stratigraphic section of the Precambrian field outcrop in the eastern part of the Qinshui Basin (modified after [46]; the location of the outcrop is shown in Fig.1b)

图5 沁水盆地南缘前寒武系野外露头地层对比剖面(据文献[46]修改;露头位置见图1b)

Fig.5 Comparative stratigraphic section of Precambrian field outcrops in the southern part of the Qinshui Basin (modified after [46]; the location of the outcrop is shown in Fig.1b)

图6 沁水盆地南部典型地震剖面前寒武系沉积地层反射特征(剖面位置见图1b)

Fig.6 Reflection characteristics of Precambrian sedimentary strata on typical seismic sections in the southern Qinshui Basin (profile location shown in Fig.1b)

图7 沁水盆地南缘横河地区长城系沉积地层产状特征 a—横河地区北大尖组野外露头剖面,位置见图7b;b—横河地区区域地质图,位置见图1b,据华北油田内部资料。

Fig.7 Occurrence characteristics of sedimentary strata of the Changcheng System in the Henghe area on the southern edge of the Qinshui Basin a—Field outcrop profile of the Beidajian Formation in the Henghe area (location shown in Fig.7b); b—Regional geological map of the Henghe area (location shown in Fig.1b, based on internal data from Huabei Oilfield).

图8 沁水盆地和周缘前寒武系地层综合柱状图及对应地层地震反射特征

Fig.8 Comprehensive columnar chart of Precambrian stratigraphy and seismic reflection characteristics of corresponding strata in the Qinshui Basin and its periphery

图9 沁水盆地典型地震剖面地质解释(地震剖面位置见图1b)

Fig.9 Geological interpretation of a typical seismic profile in the Qinshui Basin (location of the seismic profile shown in Fig.1b)

图10 沁水盆地南部前寒武纪沉积地层尖灭线剖面位置与平面分布图(二维地震工区范围见图1b,地震剖面位置见图10a,图中红色粗线表示断裂)

Fig.10 Profile position and planar distribution of the pinch-out line of the Precambrian sedimentary strata in the southern Qinshui Basin (the scope of the two-dimensional seismic work area is shown in Fig.1b, the location of the seismic profile is shown in Fig.10a, and the thick red line in the figure indicates a fault)

图11 沁水盆地南部前寒武系各组地层残余厚度等时差图(二维地震工区范围见图1b) a—长城系云梦山组地层残余厚度等时差图;b—长城系白草坪组地层残余厚度等时差图;c—长城系北大尖组地层残余厚度等时差图;d—长城系崔庄组地层残余厚度等时差图;e—长城系洛峪口组地层残余厚度等时差图;f—蓟县系龙家园组地层残余厚度等时差图。

Fig.11 Residual thickness isochronous maps of each formation of the Precambrian in the southern Qinshui Basin (the scope of the two-dimensional seismic work area is shown in Fig.1b) a—Residual thickness isochronous map of the Yunmengshan Formation of the Changcheng System; b—Residual thickness isochronous map of the Baicaoping Formation of the Changcheng System; c—Residual thickness isochronous map of the Beidajian Formation of the Changcheng System; d—Residual thickness isochronous map of the Cuizhuang Formation of the Changcheng System; e—Residual thickness isochronous map of the Luoyukou Formation of the Changcheng System; f—Residual thickness isochronous map of the Longjiayuan Formation of the Jixian System.

图12 沁水盆地周缘前寒武系烃源岩野外露头照片 a—长城系串岭沟组灰黑色页岩,沁水盆地西侧黎城大井盘露头;b—长城系崔庄组灰黑色页岩,沁水盆地南侧永济水幽露头;c—蓟县系龙家园组黑色白云岩,沁水盆地南侧永济水幽露头;d—蓟县系龙家园组黑色白云岩,沁水盆地南侧永济水幽露头。

Fig.12 Field outcrop photos of Precambrian source rocks around the Qinshui Basin. a—Dark gray shale of the Chuanlinggou Formation of the Changcheng System, outcrop at Dajingpan, Licheng, on the western side of the Qinshui Basin; b—Dark gray shale of the Cuizhuang Formation of the Changcheng System, outcrop at Shuiyou, Yongji, on the southern side of the Qinshui Basin; c—Black dolomite of the Longjiayuan Formation of the Jixian System, outcrop at Shuiyou, Yongji, on the southern side of the Qinshui Basin; d—Black dolomite of the Longjiayuan Formation of the Jixian System, outcrop at Shuiyou, Yongji, on the southern side of the Qinshui Basin.

图13 沁水盆地南部崔庄组和龙家园组地震相分类图

Fig.13 Seismic facies classification of the Cuizhuang Formation and Longjiayuan Formation in the southern Qinshui Basin

图14 沁水盆地南部崔庄组和龙家园组地震相和沉积相分布图(地震工区范围见图1b) a—长城系崔庄组地震相平面分布图;b—蓟县系龙家园组地震相平面分布图;c—长城系崔庄组沉积相平面分布图;d—蓟县系龙家园组沉积相平面分布图。

Fig.14 Seismic and sedimentary facies distribution map of the Cuizhuang Formation and Longjiayuan Formation in the southern Qinshui Basin (the scope of the two-dimensional seismic work area is shown in Fig.1b)

图15 沁水盆地南部长城系崔庄组和蓟县系龙家园组有利生烃区预测图(地震工区范围见图1b)

Fig.15 Prediction of favorable hydrocarbon-generating areas in the Cuizhuang Formation of the Changcheng System and the Longjiayuan Formation of the Jixian System in the southern Qinshui Basin (the scope of the two-dimensional seismic work area is shown in Fig.1b)