摘要
由于欧亚板块、澳大利亚板块与太平洋板块运动的作用,菲律宾海盆形成了全球最为复杂的海底地形地貌。以九州-帕劳海脊为界,西菲律宾海盆与帕里西维拉海盆呈现不同的构造走向与地形特征,海脊两侧发育丰富的深海地质现象与地貌特征。参量阵浅地层剖面仪因其差频窄波束的发射特点,能够获得深海海底浅地层的高分辨率剖面。本文利用参量阵浅地层剖面仪在九州-帕劳海脊获取的高分辨率浅地层剖面,分析了横跨海脊东西走向的海底滑坡发育特点、丘状起伏沉积差异、浅层气以及海底流体运移等地质特征,并结合构造与地形地貌特点对上述特征的成因机制进行了探讨,在垂向小时间尺度上完成了对研究区浅部地层结构的特征研究,为该区域的沉积学和地质学研究提供了思路。
The Philippine Basin has the most complex submarine topography in the world due to the movement of the three plates,the Eurasian the Australian and the Pacific.Taking the Kyushu-Palau ridge as a boundary,the West Philippine Basin shows different structural patterns and topographic features with the Parece Vela Basin where abundant deep-sea geological phenomena and geomorphic features occur..The highresolution profiles of the deep seabed can be acquired with the parametric array shallow layer profiler forits transmitting characteristics of difference-frequency and narrowband beam.In this paper,the characteristics of submarine landslides,the sedimentary differences around seaknolls and the migration of shallow gas and submarine fluid are carefully studied with the East-West trending shallow strata sections across the ridge.The Genetic mechanism of the geological characteristics is discussed by the integration of structural and topographical features.The research of shallow stratigraphic architectures made on vertical short-time scale may provide more evidence and ideas for the sedimentological and geological researches of the region.
作者
杨慧良
尉佳
李攀峰
刘长春
董凌宇
YANG Huiliang;WEI Jia;LI Panfeng;LIU Changchun;DONG Lingyu(Yantai Center of Coastal Zone Geological Survey,China Geological Survey,Yantai 264000,China;Key Laboratory of Gas Hydrate,Ministry of Natural Resources,Qingdao Institute of Marine Geology,Qingdao 266071,China)
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2021年第1期14-21,共8页
Marine Geology & Quaternary Geology
基金
中国地质调查局海洋地质调查专项(DD20190818)。
关键词
高分辨浅地层剖面
沉积物搬运
浅层气
九州-帕劳海脊
high-resolution shallow profile
sediment transport
shallow gas
the Kyushu Palau ridge
