中国石油大学学报（自然科学版）2017，Vol.41Issue(4)：10-17,8.DOI:10.3969/j.issn.1673-5005.2017.04.002
柴达木东北部晚石炭世盆山格局研究
Late Carboniferous mountain-basin framework of Northeastern Qaidam area
摘要
Abstract
The characteristics and structural attribute of the provenance of Keluke Formation clastic rocks from Shihuigou pro-file were studied according to the geochemistry, test data of detrital zircon and geotectonic theory. It is found that the type of late Carboniferous basin in northeastern Qaidam margin is passive margin basin. And the intermediate-acid magmatic rocks of the rock assemblage are dominant in the provenance. The basic-intermediate acidic rocks are absent, and there is no obvious sedimentary cycle. Provenance of Keluke Formation is mainly composed of antique basement. However, it also involves a certain amount of Caledonian period material, indicating the north Qaidam tectonic belt is still one of the detrital material sources. The Late Carboniferous transgression and basin subsidence are controlled by the Zongwulong late Paleozoic aulaco-gen in the north. And the detrital material came from the north Qaidam Caledonian orogenic belt, showing the basin-orogen pattern of "southern mountain-northern sea". The internal basin is filled with marine sedimentary. The denudation history of North Qaidam Paleozoic orogen started from ca. 430 Ma, and its existence is no later than Late Carboniferous. The arc mag-matic rocks are erased in the earlier stage and the erosion of antique basement happens in the later period.关键词
柴达木东北部/晚石炭世/盆山格局/地球化学/碎屑锆石Key words
Northeastern Qaidam area/Late Carboniferous/mountain-basin framework/geochemistry/detrital zircon分类
海洋科学引用本文复制引用
孙娇鹏,陈世悦,彭渊,汪峰,高立祥,邵鹏程,马帅..柴达木东北部晚石炭世盆山格局研究[J].中国石油大学学报（自然科学版）,2017,41(4):10-17,8.基金项目
国土资源地调项目(资[2014]03-025-002,121201104000150007,12120113040000-3) （资[2014]03-025-002,121201104000150007,12120113040000-3）
