• 责任者：Xu Huan (Institute of Geology ; Chinese Academy of Geologcial Sciences ; Beijing 100037 ; China) ; Liu Yongqing
• 刊名：Geological Bulletin of China
• 出版年：2013
• 卷期：32(2/3)
• 关键词：物源分析 ; provenance analysis ; 沉积演化 ; sedimentary evolution ; 内蒙古 ; Inner Mongolia ; 河北 ; Hebei Province
• 页码：p.502-524
• 图表：illus., 1 table, 186 refs.
• 分类号：0803
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

Daqingshan, Houchegn and Tuchengzi Formations distributed in Yinshan-Yanshan area consist of bedded purple coarse clastic sediments of great thickness and are constrained to about 154-137Ma. Sedimentary provenance composition （conglomerate） shows obvious localized rock assemblage features. Andesite is dominant in eastern Yanshan area, gneiss and magmatic rocks give priority to western Yanshan area, and Precambrian metamorphic rocks occupy the Yinshan area. Sandstone Qm-F-Lt diagram indicates a recycle orogenic provenance, whereas paleocurrent in different areas shows localized convergent river system characteristics, suggesting that a series of relatively independent middle-small scale basins were developed in northern North China during the Late Jurassic-Early Cretaceous period. Sedimentary detrital zircon ICP-MS U-Pb dating shows that the Tuchengzi Formation in western Liaoning,has three age ranges, i.e., 115.2-144.2Ma, 119.4-380.3Ma, and 1522-2629.1Ma, zircon ages of Daqingshan Formation in Yinshan area range from 1685 to 2325Ma, the Middle Jurassic Zhaogou Formation has ages of 1790.2-2471.2Ma, the Middle-Late Jurassic Changhangou Formation has ages of 627.7-1971.2Ma and 2003.9-2245.4Ma, Houcheng Formation in western Yanshan area ranges in age from 371Ma to 206.7Ma, and the Late Jurassic-Early Cretaceous Yanjiayao Formation has ages of 225-364.7Ma and 2643.9- 2271.9Ma. The provenance of Tuchengzi Formation in western Liaoning came from Permian-Triassic magmatic rocks of eastem Yanshan; Houcheng Formation and Yanjiayao Formation in Shangyi derived their materials from Late Paleozoic-Early Mesozoic magmatic rocks and Precambrian strata; Zhaogou Formation, Changhangou Formation and Daqingshan Formation were supplied by the Precambrian strata in southern Yinshan area. Rare 150-200Ma detrital zircon ages reveal that the underlying Tiaojishan Formation could not be the provenance of Tuchengzi Formation, and tectonic deformation or unconformity surface did not exist between Tuchengzi Formation and underlying Tiaojishan （Lanqi） Formation. Furthermore, coeval occurrence of mafic dykes （diabase）（140Ma） and alkaline rocks （139Ma） in Tuchengzi Formation and westward giant-scale eolian deposits（137Ma） in Daqingshan, Houcheng and Tuchengzi Formations also suggest a regional extensional tectonic setting.