Structure and evolution of the Kerguelen-Heard Plateau (Indian Ocean) deduced from seismic stratigraphy studies
Structure and evolution of the Kerguelen-Heard Plateau (Indian Ocean) deduced from seismic stratigraphy studies
复制标题
地震地层学研究推导的凯尔盖朗-赫德高原（印度洋）的结构和演化
DOI：
10.1016/0025-3227(87)90022-3
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
R. Schlich
中科院分区：
文献类型：
--
作者：
M. Munschy;R. Schlich
Kerguelen-Heard高原是Kerguelen-Gaussberg海岭的北方区域，它的构造和演化是通过多道地震剖面的地层学解释得出的。Kerguelen-Heard高原形成于130 ~ 100 Ma之间，位于或靠近印度板块和澳大利亚板块之间的差距的一个活动扩张中心。从晚白垩世早期（约100 Ma）到始新世（42-45 Ma），凯尔盖朗-赫德高原是一个浅海构造，以约20 m Ma− 1的速率持续下沉，并被远洋和陆架沉积物覆盖。在42-45 Ma，Kerguelen-Heard高原和Broken Ridge被东南印度洋脊的海底扩张明显分开。从42-45 Ma到中新世，出现了一个主要的沉积空白。后来，凯尔盖朗-赫德高原被远洋沉积物覆盖，与主要来自凯尔盖朗岛的厚碎屑沉积层互层。
The structure and evolution of the Kerguelen-Heard Plateau, the northern domain of the Kerguelen-Gaussberg Ridge, is derived from stratigraphic interpretation of multichannel seismic profiles. The Kerguelen-Heard Plateau was created between 130 and 100 Ma at or near an active spreading center in the gap between the Antarctica-Australia plate and the India plate. From the early Late Cretaceous (about 100 Ma) to the Eocene (42–45 Ma) the Kerguelen-Heard Plateau was a shallow marine structure continuously subsiding at a rate of about 20 m Ma−1and covered by pelagic and shelf sediments. At 42–45 Ma the Kerguelen-Heard Plateau and Broken Ridge were clearly separated by sea-floor spreading at the Southeast Indian Ridge. From 42–45 Ma to the Miocene, a major gap of sedimentation occurred. Later the Kerguelen-Heard Plateau was covered by pelagic sediments, interbedded with thick clastic sedimentary layers coming essentially from Kerguelen Island.