The response of Os isotope in a ferromanganese crust from the West Pacific to paleaoceanographic events

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋地质与地球物理研究室

	The response of Os isotope in a ferromanganese crust from the West Pacific to paleaoceanographic events
	Li, Jiangshan 1,2; Ren, Xiangwen 1,2; Shi, Xuefa 1; Liu, Jihua 1
	2009
会议日期	9 20, 2009 - 9 24, 2009
会议地点	Chennai, India
页码	37-41
英文摘要	This paper researches the ferromanganese crust MHD79 from bottom to top 20 Os isotope data from the Central Pacific. The results showed that: in the Ferromanganese crust MHD79, each187Os/188Os value low point corresponds to the Os content high point, and corresponds to a large-scale volcanic (magmatic) activity or meteorite impact event. In the early three stages of the ferromanganese crust MHD79, Os content gradually increased with the decreasing of187Os/188Os, which demonstrates that Os content correlated with187Os/188Os negatively during this period; in the stages IV and V, the Os contents still correlated negatively with the187Os/188Os, but the 187Os/188Os value increased gradually; in the stage VI, the Os contents increased and correlated positively with the 1870s/1880s. The evolution of Os contents and187Os/ Os in the ferromanganese crust MHD79 suggested that, mantle and extraterrestrial material were the main contributors to the Os in the ocean relative to terrestrial material from late Cretaceous to Paleocene; Thereafter, the terrestrial material input increased gradually; after Oligocene, the terrestrial material input increased rapidly and became the main contributor for the Os in the ocean. Copyright © 2009 by The International Society of Offshore and Polar Engineers (ISOPE).
会议录	Proceedings of the ISOPE Ocean Mining Symposium
会议录出版者	International Society of Offshore and Polar Engineers
语种	英语
内容类型	会议论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/7126]
专题	业务部门_海洋地质与地球物理研究室
作者单位	1.Key Laboratory of Marine Sedimentology and Environmental Geology of State Oceanic Administration, First Institute of Oceanography, State Oceanic Administration, Qingdao, China; 2.Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
推荐引用方式 GB/T 7714	Li, Jiangshan,Ren, Xiangwen,Shi, Xuefa,et al. The response of Os isotope in a ferromanganese crust from the West Pacific to paleaoceanographic events[C]. 见:. Chennai, India. 9 20, 2009 - 9 24, 2009.