深水环境多级地貌坡折控制下的重力流动力学的演变

被引：18

作者：

王海荣 ^{[1
]}

王英民 ^{[2
]}

邱燕 ^{[3
]}

彭学超 ^{[3
]}

王志宏 ^{[4
]}

机构：

[1] 中国地质大学海相储层演化与油气富集机理教育部重点实验室

[2] 中国石油大学资源与信息学院

[3] 广州海洋地质调查局区域地质调查所

[4] 中国石油勘探开发研究院廊坊分院

来源：

地质学报 | 2009年 / 83卷 / 06期

关键词：

南海; 台湾浅滩陆坡; 重力流; 地貌坡折; 流体参数; 沉积物波;

D O I：

暂无

中图分类号：

P737 [海洋地貌学];

学科分类号：

070403 [天体物理学];

摘要：

台湾浅滩陆坡具有活跃的重力流机制,发育了壮观的重力流沉积体系,是研究重力流动力学作用过程的理想场所。自陆架前缘直至深海的马尼拉海沟,发育了3个地貌坡折(包括一个陆架坡折和两个陆坡坡折)。这些地貌坡折控制了重力(流)的启动和整个演化过程,控制了各种重力流沉积体系的空间分布格局。其中陆架坡折控制了重力滑塌的产生,第一和第二陆坡坡折则分别控制了重力滑塌体、碎屑流、浊流的转换。本文利用重力流沉积物波的波形参数恢复了重力流流体有关参数,实证了研究区的确存在有非常活跃的重力流机制。而多级地貌坡折代表着陆坡地貌的不均衡和向均衡的演化,重力流的侵蚀-沉积效应只是陆坡体系调整过程的表现。

引用

页码：812 / 819

页数：8

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