Neogene to Quaternary uplift history along the passive margin of the northeastern Arabian Peninsula, eastern Al Hajar Mountains, Oman
Neogene to Quaternary uplift history along the passive margin of the northeastern Arabian Peninsula, eastern Al Hajar Mountains, Oman
复制标题
阿曼哈吉尔山脉东部阿拉伯半岛东北部被动边缘的新近纪至第四纪隆起历史
作者：
D. Moraetis;F. Mattern;A. Scharf;G. Frijia;T. Kusky;Ye Yuan;I. El
摘要这项工作探索了阿拉伯半岛东北部(Al Hajar山脉东部)暴露最好的海洋阶地的隆升历史。采用了多学科方法，包括地形测量、14C测年、薄片研究和扫描电子显微镜分析。研究了6个有特色的海洋阶地，其宽度从十分之一米到千米，海拔从5到~400m。这些阶地记录了沿走向的非均匀隆升历史，同时它们显示出在0.9-6.7毫米/年之间的时间变化的隆升速率，这与阿拉伯半岛东部其他已公布的海洋阶地的隆升速率具有很好的相关性。我们将这种沿阶地走向的可变隆升归因于以下几种隆升机制的组合：(1)早中新世期间沿深埋的逆断层，形成大型地壳规模的块体；(2)上新世或上新世后，在下阿拉伯板块前隆起外壁上新世或上新世后的隆升，因为它弯曲进入Zagros-Makran俯冲带；(3)过去约40ka以来可能的俯冲减速。
Abstract This work explores the uplift history of the best exposed marine terraces in the northeastern Arabian Peninsula (eastern Al Hajar Mountains). A multidisciplinary approach was employed, including a topographic survey, 14C dating, thin section studies, and scanning electron microscopy analyses. Six distinctive marine terraces with widths ranging from tenth of meters to kilometers and elevations from 5 to ~400 m were studied. These terraces record an along-strike heterogeneous uplift history, while they show temporally variable uplift rates ranging between 0.9 to 6.7 mm/yr, which correlates well with other published uplift rates of marine terraces of the eastern Arabian Peninsula. We attribute the variable uplift along strike of the terraces, to a combination of uplift mechanisms: (1) during early to mid-Miocene along deep-rooted reverse faults that bound large crustal-scale blocks, (2) Pliocene or post-Pliocene uplift on the outer wall of the forebulge of the lower Arabian Plate as it bends to enter the Zagros-Makran subduction zone, and (3) a possible slowdown of subduction for the past ~40 ka.
阿曼北部海岸长期演化回顾——沉降与隆升
DOI：
10.1127/1860-1804/2013/0002
发表时间：
2013
影响因子：
1.1
作者：
Hoffmann;Rupprechter;Mayerhofer
通讯作者：
Mayerhofer