Latest Jurassic-Early Cretaceous events and the late Cimmerian unconformity in North Sea area
Latest Jurassic-Early Cretaceous events and the late Cimmerian unconformity in North Sea area
复制标题
北海地区侏罗纪-早白垩世最新事件与晚西梅里不整合面
DOI：
10.1306/03b5ac87-16d1-11d7-8645000102c1865d
复制
发表时间：
1982
期刊：
影响因子：
3.5
通讯作者：
L. A. Riley
中科院分区：
文献类型：
--
作者：
P. Rawson;L. A. Riley
几个区域或局部不整合面中的每一个都可能在当地被识别为“辛梅利晚期不整合面”，这是瓦尔霍尔组（或罗德比组）底部的一个假定的主要断裂。在北海的大部分地区，瓦尔霍尔组的底部是等厚的，与下面的沉积物一致。在地震反射剖面上检测到它是因为它代表了一个广泛的相变，标志着梁赞晚期的海侵。大多数不整合面是由海平面升降引起的，海平面升降的影响从未完全被局部构造所掩盖。因此，在个别油田的建模中，可以通过参考区域或海平面变化事件来部分预测沉积间断发生的可能性。修改期刊摘要。
Each of several regional or local unconformities may have been identified locally as the "late Cimmerian unconformity," a supposed major break at the base of the Valhall Formation (or Roedby Formation). Over most of the North Sea the base of the Valhall Formation is isochronous, and conformable with underlying sediments. It is detected on seismic reflection profiles because it represents a widespread facies change marking the late Ryazanian transgression. Most of the unconformities are of eustatic origin and the effects of eustatic sea level changes were never completely masked by local tectonics. Thus, in the modeling of individual oil fields, the possibility of sedimentary breaks occurring can be predicted in part by reference to regional or eustatic events.--Modified journal abstract.