Fold growth in the South Caspian Sea Basin: Mechanisms and interaction with deep-water lacustrine sediments

南里海盆地褶皱生长：机制及其与深水湖相沉积物的相互作用

• 批准号: 1992734
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1992734
• 关键词: Fold; growth; South; Caspian; Sea

The South Caspian Sea Basin contains one of the thickest sedimentary successions of any basin on the planet. It has accumulated up to 10 km of sedimentary infill in the last 6 Million years alone, overlying a thick, organic-rich, over-pressured shale. The location of the Caspian Sea at the site of a major zone of plate convergence between the Arabian and Eurasian Plates, has led to the formation of numerous shale-cored anticlines, with associated mud volcanoes. Since c. 3 Ma it has been isolated from marine waters and sedimentary fill has been dominated by fluvial and deltaic deposits passing laterally into shallow and deep-water lacustrine sediments in the south of the basin. The aims of this project are firstly to investigate the mode of formation of the shale-cored Caspian Sea Basin folds and in particular address the role of sediment loading as well as tectonic shortening in their genesis; and secondly to understand how the deep-water lacustrine environments are affected by the growth of the folds.

南里海盆地拥有地球上所有盆地中最厚的沉积序列之一。仅在过去的600万年里，它就积累了长达10公里的沉积填充物，覆盖在厚厚的、富含有机物的超压页岩上。里海位于阿拉伯板块和欧亚板块之间的主要板块汇聚带，导致了许多页岩核背斜的形成，并伴有泥火山。自c. 3 Ma以来，它已与海水分离，沉积填充物以河流和三角洲沉积为主，横向进入盆地南部的浅水和深水湖泊沉积。该项目的目的是首先研究以页岩为核心的里海盆地褶皱的形成模式，特别是解决沉积物负荷和构造缩短在其成因中的作用；其次，了解深水湖泊环境如何受到褶皱生长的影响。