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Enhancement of volcanic eruption in mid-ocean ridge during the last deglaciation: New sedimentary evidence in the middle part of Central Indian Ridge

文献类型：期刊论文

作者Lim, Dhongil1,2; Kim, Jihun1,2; Kim, Jonguk1; Kim, Dongsung1; Jeong, Dohyun1; Kim, Haryun1; Xu, Zhaokai3,4,5
刊名MARINE GEOLOGY
出版日期2021-10-01
卷号440页码:11
关键词Ocean ridge volcanism Pyroclastic layer The last deglaciation Climate change Central Indian Ridge
ISSN号0025-3227
DOI10.1016/j.margeo.2021.106574
通讯作者Lim, Dhongil(oceanlim@kiost.ac.kr) ; Xu, Zhaokai(zhaokaixu@qdio.ac.cn)
英文摘要Sedimentary evidence for enhanced volcanic eruption during the glacial/interglacial transition in the volcanically active mid-ocean ridges is still lacking. Here, we present the sedimentary records of enhanced deglacial volcanic activity in a well-dated sediment core from the middle part of Central Indian Ridge (CIR), which can provide clue for comprehensively understanding of the temporal relation of increase in submarine volcanism relative to glacial/interglacial transition. Notably, the 35-kyr sediment core used in this study contains continuous, discernible pyroclastic deposit layers (0.5-5 cm thick), which are composed mainly of angular and curved fluidal shards with vesicles, possibly suggesting volatile-rich ridge eruptions. High-resolution elemental profiles of the core provide definite records of at least 17 volcanic eruptions during the past 35 kyr. Interestingly, volcanism was sparse during the Last Glacial Maximum (LGM), but increased significantly during the last deglaciation after similar to 18 kyr BP. The last deglaciation-associated volcanic eruptions in the CIR may be linked to decompression melting during the LGM sea-level lowstand, reaffirming an influence of sea level variability on global ocean ridge magmatism. Combining the previous results, furthermore, simultaneous strengthening of submarine and subaerial volcanic eruptions during the last deglaciation could have accelerated the rise of atmospheric CO2, with the ensuing warming constituting positive feedback upon deglaciation.
资助项目National Research Foundation of Korea (NRF) - Korea government (MSIT)[2021R1A2C1014443] ; Ministry of Oceans and Fisheries, Korea[PM20210634] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40010100] ; National Natural Science Foundation of China[41876034] ; National Natural Science Foundation of China[41676038]
WOS研究方向Geology ; Oceanography
语种英语
WOS记录号WOS:000689714900006
出版者ELSEVIER
源URL[http://ir.qdio.ac.cn/handle/337002/176290]  
专题海洋研究所_海洋地质与环境重点实验室
通讯作者Lim, Dhongil; Xu, Zhaokai
作者单位1.Korea Inst Ocean Sci & Technol, Busan 53201, South Korea
2.Univ Sci & Technol, Daejeon 34113, South Korea
3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
5.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
推荐引用方式
GB/T 7714		 Lim, Dhongil,Kim, Jihun,Kim, Jonguk,et al. Enhancement of volcanic eruption in mid-ocean ridge during the last deglaciation: New sedimentary evidence in the middle part of Central Indian Ridge[J]. MARINE GEOLOGY,2021,440:11.
APA Lim, Dhongil.,Kim, Jihun.,Kim, Jonguk.,Kim, Dongsung.,Jeong, Dohyun.,...&Xu, Zhaokai.(2021).Enhancement of volcanic eruption in mid-ocean ridge during the last deglaciation: New sedimentary evidence in the middle part of Central Indian Ridge.MARINE GEOLOGY,440,11.
MLA Lim, Dhongil,et al."Enhancement of volcanic eruption in mid-ocean ridge during the last deglaciation: New sedimentary evidence in the middle part of Central Indian Ridge".MARINE GEOLOGY 440(2021):11.

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来源：海洋研究所

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