摘要
目的：研究南华北中、新生代盆地构造特征。方法：对盆地基底特征及造盆阶段进行划分。结果：探讨了盆地形成机制及盆地演化。结论：南华北盆地晚三叠世及早、中诛罗世因秦岭大别造山带的挤压形咸两期压陷盆地，晚件罗世一早白尘世、晚白噩世（？）一早第三纪形成两期拉张断陷盆地。上述4期盆地均具有压陷、拉张不强的特点，因而其作用卷入层次浅，盆地基底沉降量不足，地壳拉张幅度小、热流值低。这些因素造成了该区烃源岩发育差和（或）有机质演化程度低，不利于油气形成。下步勘探的重点应放在边界断裂滑脱面深达岩石圈中等层次的断陷里。
The basins in southern of north china were restored later Triassic， lower－middle Jurassic corn-pressional depression，later jurasslc－Paleogene extensional grabens due to movements of Qinling and dable moun－tain belt and regional extension in east China．Because of no strong compression and lower level extension，mostof the basins have no enough subsidence to collect layge amount of resource rocks． For lower extension ratio，heatflow was not high enough to make organic material change oil and gas．The prospecting area maybe lie ingrabens whose slip level of major boundary faults of half graben were in lower lithosphere．
出处
《断块油气田》
CAS
1998年第6期19-19,共1页
Fault-Block Oil & Gas Field
关键词
中生代
新生代
南华北盆地
盆地类型
石油生成
Mesozoil era，Cenolic era，Huabeinanbu basins，Plate movement，Basin type，Basin evolution
