The Mesozoic–Cenozoic structural framework of the Bay of Kiel area, western Baltic Sea
The Mesozoic–Cenozoic structural framework of the Bay of Kiel area, western Baltic Sea
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波罗的海西部基尔湾地区中生代-新生代构造格局
DOI：
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发表时间：
2005
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影响因子：
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通讯作者：
K. Reicherter
中科院分区：
文献类型：
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作者：
M. Hansen;H. Lykke‐Andersen;A. Dehghani;D. Gajewski;Christian Hübscher;Morten Olesen;K. Reicherter
对波罗的海西部基尔湾的多道高分辨率地震剖面密集网格进行了解释，以揭示北德盆地北部的中生代和新生代地质演化。研究区的总体地质演化可分为四个不同时期。在三叠纪和早侏罗世期间，东西向伸展和碎屑沉积物的沉积引发了下面的 Zechstein 蒸发岩的运动。沉积在中侏罗世期间停止，当时整个地区因北海中部隆起而抬升。隆升导致上三叠统和下侏罗统地层受到明显侵蚀。该事件的特点是所有地震剖面上都存在明显的角度不整合。该地区一直是非沉积区，直到早白垩世末，该地区恢复了沉积作用。在整个晚白垩世，沉积作用是在构造静止状态下发生的。由于区域应力场从拉伸向压缩的变化，在白垩纪新生代过渡期观察到重新激活的盐运动。垂直盐运动影响新生代沉积并导致薄皮断层。
A dense grid of multichannel high-resolution seismic sections from the Bay of Kiel in the western Baltic Sea has been interpreted in order to reveal the Mesozoic and Cenozoic geological evolution of the northern part of the North German Basin. The overall geological evolution of the study area can be separated into four distinct periods. During the Triassic and the Early Jurassic, E–W extension and the deposition of clastic sediments initiated the movement of the underlying Zechstein evaporites. The deposition ceased during the Middle Jurassic, when the entire area was uplifted as a result of the Mid North Sea Doming. The uplift resulted in a pronounced erosion of Upper Triassic and Lower Jurassic strata. This event is marked by a clear angular unconformity on all the seismic sections. The region remained an area of non-deposition until the end of the Early Cretaceous, when the sedimentation resumed in the area. Throughout the Late Cretaceous the sedimentation took place under tectonic quiescence. Reactivated salt movement is observed at the Cretaceous Cenozoic transition as a result of the change from an extensional to compressional regional stress field. The vertical salt movement influenced the Cenozoic sedimentation and resulted in thin-skinned faulting.