Introduction to the Integrated Ocean Drilling Program Expedition 334 Costa Rica Seismogenesis Project

详细信息   

• 责任者：Zhu Junjiang (Key Laboratory of Marginal Sea Geology ; South China Sea Institute of Oceanology ; Chinese Academy of Sciences ; Guangzhou 510301 ; China)
• 刊名：Advances in Earth Science
• 出版年：2011
• 卷期：26(12)
• 关键词：大洋钻探计划 ; Ocean Drilling Program ; 哥斯达黎加 ; Costa Rica
• 页码：p.1300-1304
• 图表：2 illus., 33 refs.
• 分类号：2000
• issnNo：ISSN1001-8166
• isbnNo：CN62-1091/P

摘要

 
    

The Costa Rica Seismogenesis Project (CRISP)(IODP Expedition 334) was carried out on the continental margin slope apron in the Costa Rica subduction zone in Central America. The primary scientific goals of this expedition are to understand the processes that control nucleation and seismic rupture of large earthquakes at erosion-controlled subduction zone. During one month drilling, onboard totally 1 492.88 meters long cores were obtained at four sites and eight holes. Tephra layers with ages ranging from Miocene to present were indentified. Rock variation characteristic of sediments and basement rocks were preliminary defined and basalt from the oceanic Cocos ridge basement was recovered.