摘要
早白垩世中期中国东南部发生过一次断陷事件,并形成一事件地层单元——断陷岩套。叙述了断陷岩套的形成机理、特征和类型,并利用事件地层单元同时性原理,论证了建组剖面"塘上组"的层位与永康群下部馆头组相同,而非高居永康群之上的"新构造亚层";也论证了嵊县三界一带的所谓"大爽组二段"应为馆头组。这两个断陷岩套中所含生物群证实:事件地层学原理所得的关于其层位与时代的结论是正确的。
A fault subsidence event was happened in southeast China during the middle period in early Cretaceous ,while an event stra- tiqraphic unit-fauh subsidence suite was formed. The genetic mechanism, features and types of the fault subsidence suite are depicted in the text, and the principles of the isochroneity of the event stratiqraphic unit were used to prove the horizon of Tangshang Formation in its type section located at Shuinan of Tiantai basin should be the same with that of Gantou Formation of the lower part of Yongkang Group, but not a new tectonic subbed which was overburdened upon Yongkang Group, and the so called. The second member of Dashuang Formation located near Sanjie of Shengzhou should also be Guantou Formation. The information obtained from the above mentioned fault subsidence suites suggested and concluded that the horizon and age of the fault subsidence suite based on the principle of even stratigraphy were correct.
出处
《江苏地质》
2007年第3期176-179,共4页
Jiangsu Geology
基金
中国地质调查局基础地质综合研究项目(编号1212010610611)
关键词
早白垩世
事件地层学
断陷岩套
馆头组
塘上组
浙江东部
Early Cretaceous Epoch
Event stratigraphy
Fault subsidence suite
Guantou Formation
Tangshang Formation
East Zhejiang
