对鱼台盆地的新认识

A Further Research On Yutai Basin in Northern Jiangsu Province

中文关键词:  重力负异常  海相生物  海源

英文关键词:Negative gravity anomaly,Marine organisms,Marine

中文摘要:

      根据微体生物资料，将原定之始新统“官庄组”修正为始新统至上古新统三垛组、戴南组和阜宁组四段），将原定７８—４孔和丰钾３孔宫庄组更为下白垩统青山组；综合地震、重力、古生物资料对鱼台盆地有了新的认识：其一，鸳楼断层西段不存在而是向北东方向延伸；其二，认为鱼台盆地是一个统一的盆地，所谓师砦、欢口、鱼台三个被此分割的盆地，实际上是三个相互连通的次凹；其三，提出了李阁附近是盆地的沉降中心和成钾有利部位；其四，提出了有海源的新观点。

英文摘要:

      According to some new materials of micro fossils, the age of "Guanzhuang Fm. " on the Yutai Basin and original named E2 should now be late Paleocene and related with upper Funing Fm. So-call" Guanzhuang Fm. " of bore hole number 3 and number 78-4 should now be thought Qingshan Fm., lower Cretaceous. Based on a syntehtic analysis of materials of regional geology and gravity and earthquake and microfossil characteristiss, some new point of view are suggested: 1,The west section of Yuanlou fault lying northern part of Yutai Basin don't exist. Its extending direction is along NE. 2, Yutai Basin is a unitary basin. So-call Shiahai Basin, Huankou Basin and" Yutai Basin" being separited each other, inpoint of fact, are three secondary depression of Yutai Basin. 3, Lige area is main centre in depressions of Yuteai Basin and favourable for potassium generation. 4, In Early Tertiary the sea-water entered into Yutai Basin.