地质论评2009，Vol.55Issue(6)：804-815,12.
华北克拉通南部周口坳陷谭庄-沈丘凹陷早白垩世沉积、构造特征与原型盆地性质
Sedimentary and Tectonic Features and Proto-basin of Early Cretaceous Tanzhuang-Shenqiu Sag, Zhoukou depression, in southern area of North China Craton
摘要
Abstract
Located at the sourthern margin of the North China Craton, the Tanzhuang-Shenqiu sag, Zhoukou depression, is filled with Lower Cretaceous sediments in a huge thinckness. Deposits in the sag are characterized by thinner grained clastic rocks with miderteran composition and texture maturations, such as mudstone, siltstone and sandstone, and especially rich in volcanic clastics. Sedimentary structures and depositional facies associations interpreted as fluvial-delta and lacustrine environments were recognized in this research. Present study insisted that sediments supply of the Tanzhuang-Shenqiu sag in Early Cretaceous are from the Dabie orogenic belt to the south. Basin's Formation was initially controlled by the southern marginal stretch fault, I.e.,Yelu fault, which became thrusting toward north at the end of Early Cretaceous. Based upon study of sandstone composition and Q-F-L diagram (Dickinson's diagram), geochemistry of major and REE elements of sediments and the geochonology of volocanic rocks, writers suggest that the Tanzhuang-Shenqiu sag formed in a regional stretch tectonic setting in the Early Cretaceous, was a original fault basin.关键词
华北/早白垩世/沉积/构造/盆地Key words
North China/ Early Cretaceous/ deposition/ tectonic/ Zhoukou depression分类
天文与地球科学引用本文复制引用
旷红伟,穆朋飞,顾兴明,柳永清,彭晓波,杨飞,陈铭培,岑超,彭楠,李家华,王晓光..华北克拉通南部周口坳陷谭庄-沈丘凹陷早白垩世沉积、构造特征与原型盆地性质[J].地质论评,2009,55(6):804-815,12.基金项目
本文为国土资源部全国油气资源战略选区调查与评价专项"东秦岭-大别山造山带两侧油气资源战略选区研究"(子课题编号XQ-2007-02-3-4)的成果. （子课题编号XQ-2007-02-3-4）
