Varying tectonic control on basin development at an active microplate margin: Latakia Basin, Eastern Mediterranean
Varying tectonic control on basin development at an active microplate margin: Latakia Basin, Eastern Mediterranean
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活动微板块边缘盆地发育的不同构造控制：东地中海拉塔基亚盆地
DOI：
10.1016/j.margeo.2004.05.034
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发表时间：
2005
期刊：
影响因子：
2.9
通讯作者：
D. Yaşar
中科院分区：
文献类型：
--
作者：
J. Hall;A. Aksu;T. Calon;D. Yaşar
多道地震反射剖面的详细解释表明，拉塔基亚盆地演化在两个不同的构造阶段：东南方向的收缩，在最新的中新世达到高潮，其次是在上新世早中期逐步过渡到分区收缩和伸展有关的开始走滑沿着东部安纳托利亚转换断层及其海洋延伸。中新世褶皱/冲断带包括两个弧形顶点，包围着位于Amanos-Larnaka斜坡背斜后缘的中新世背驮式沉积中心。在中新世早期至中期，这个背驮式盆地是一个更宽的前渊的一部分，该前渊还包括北部的奇里西亚-阿达纳盆地复合体的中新世继承。米西-凯里尼亚褶皱/冲断带在托托阶形成，有效地将前渊分成两个大型背驮式盆地。我们的数据表明，一个根本性的变化发生在运动学制度的墨西拿到上新世早期涉及的走滑运动的开始，导致transtension沿着东北走向的主要线性部分界定拉塔基亚盆地和持续收缩的东部走向的线性部分。在拉塔基亚盆地的东北部，向东南的逆冲作用在早墨西拿期停止，随后在上新世晚期出现地垒和地堑构造，以连接陆地和东安纳托利亚转换断层的断层为界。
Detailed interpretation of multichannel seismic reflection profiles show that the Latakia Basin evolved in two distinct tectonic stages: southeast-directed contraction that culminated in the latest Miocene, followed in the early–middle Pliocene by progressive transition to partitioned contraction and extension related to the initiation of strike slip along the eastern Anatolian Transform Fault and its marine extensions. The Miocene fold/thrust belt comprises two arcuate culminations enclosing a Miocene piggy-back depocentre situated on the backlimb of the Amanos–Larnaka ramp anticline. In the early–middle Miocene, this piggy-back basin was part of a much wider foredeep that also encompassed the Miocene successions of the Cilicia–Adana basin complex to the north. The Misis–Kyrenia fold/thrust belt evolved in the Tortonian, effectively dividing the foredeep into two large piggy-back basins. Our data demonstrate that a fundamental change in kinematic regime occurred during the Messinian to early Pliocene involving the onset of strike-slip movements resulting in transtension along the northeast-trending portion of the main lineaments bounding the Latakia Basin and continued contraction across the east-trending portion of the lineaments. In the northeastern portion of the Latakia Basin southeast-directed thrusting ceased in the early Messinian and was followed in the lower Pliocene by the development of horst and grabzen structures, bounded by faults linking onland with the strands of the East Anatolian Transform Fault.