Structural evolution, timing and tectonic style of the Sole Pit inversion
Structural evolution, timing and tectonic style of the Sole Pit inversion
复制标题
Sole Pit反转的构造演化、时代及构造样式
DOI：
10.1144/gsl.sp.1989.044.01.24
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
B. V. Hoorn
中科院分区：
文献类型：
--
作者：
B. V. Hoorn
位于北海南部海盆西半部的北西-南东向的Sole Pit High是晚古生代三次不同构造作用的结果。盆地沉降可能与晚海西期的拉分运动有关，导致二叠纪至中侏罗世的连续沉积。中侏罗世隆起的东翼，其次是侵蚀，扭张运动和差异沉降，直到早白垩世，反映了中期和晚期基默地壳扩张和破碎的北海裂谷。盆地范围的反转发生在Turonian和Campanian之间，并在渐新世重复，导致约1500米的总隆起。目前的构造样式是由一个复杂的网络的transpressional和transstensional断层在二叠纪Rotliegend水平，这被认为是代表向上终止的一系列扭引起的花状结构与右侧的位移感。这些断层被Zechstein和三叠纪盐从较浅层次的更有序的张扭断层系统中分离出来。在没有盐的地区，基梅尔晚期的正断层在反转过程中以相反的方式被重新激活。然而，这些浅层可绘制的构造成分与Sole Pit High的更深的前二叠纪结构和底层地壳结构的关系仍然是推测性的。
Abstract The NW-SE oriented Sole Pit High, located in the western half of the Southern North Sea Basin, is the result of three different structural processes initiated during the Late Palaeozoic. Basin subsidence, probably related to Late Hercynian pull-apart movements, led to continuous sedimentation from the Permian to the Middle Jurassic. Mid-Jurassic doming of its eastern flank, followed by erosion, transtensional movements and differential subsidence until the Early Cretaceous, reflect the Mid and Late Kimmerian crustal distension and fragmentation of the North Sea Rift. Basinwide inversion occurred between the Turonian and the Campanian and was repeated in the Oligocene resulting in a total uplift of some 1500 m. The present structural style is represented by a complex network of transpressional and transtensional faults at Permian Rotliegend levels, which are thought to represent the upward termination of a series of wrench-induced flower structures with a right-lateral sense of displacement. These faults are detached by Zechstein and Triassic salt from more orderly transtensional faults systems at shallower levels. In areas where salt is absent Late Kimmerian normal faults became reactivated in a reverse sense during inversion. However, the relationship of these shallow mappable tectonic components to the deeper pre-Permian structure of the Sole Pit High and to the underlying crustal configuration remains speculative.