DOI: 10.1002/2013GL059000
论文题名: Evidence for coral island formation during rising sea level in the central Pacific Ocean
作者: Kench P.S. ; Owen S.D. ; Ford M.R.
刊名: Geophysical Research Letters
ISSN: 0094-10411
EISSN: 1944-10142
出版年: 2014
卷: 41, 期: 3 起始页码: 820
结束页码: 827
语种: 英语
英文关键词: atoll islands
; Marshall Islands
; Pacific Ocean
; reef island evolution
; sea level change
Scopus关键词: Reefs
; Sediments
; atoll islands
; Holocene sea level
; Marshall Islands
; Morphostratigraphic analysis
; Pacific ocean
; Radiometric dating
; Sealevel change
; Three phase model
; Sea level
; atoll
; coral reef
; Holocene
; radiometric method
; sea level change
; Marshall Islands
; Pacific Ocean
; Pacific Ocean (Central)
; Anthozoa
英文摘要: The timing and evolution of Jabat Island, Marshall Islands, was investigated using morphostratigraphic analysis and radiometric dating. Results show the first evidence of island building in the Pacific during latter stages of Holocene sea level rise. A three-phase model of development of Jabat is presented. Initially, rapid accumulation of coarse sediments on Jabat occurred 4800-4000 years B.P. across a reef flat higher than present level, as sea level continued to rise. During the highstand, island margins and particularly the western margin accreted vertically to 2.5-3.0 m above contemporary ridge elevations. This accumulation phase was dominated by sand-size sediments. Phase three involved deposition of gravel ridges on the northern reef, as sea level fell to present position. Jabat has remained geomorphically stable for the past 2000 years. Findings suggest reef platforms may accommodate the oldest reef islands in atoll systems, which may have profound implications for questions of prehistoric migration through Pacific archipelagos. Key Points Evidence of Pacific reef island formation in latter stages of sea level rise Reef platforms accommodate the oldest coral reef islands in atoll archipelagos Islands formed at higher sea level have been stable for the past 2000 years ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893672065&doi=10.1002%2f2013GL059000&partnerID=40&md5=840cdd9a027108fd6dde1e23bde78f03
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7675
Appears in Collections: 气候减缓与适应
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作者单位: School of Environment, University of Auckland, Auckland, New Zealand
Recommended Citation:
Kench P.S.,Owen S.D.,Ford M.R.. Evidence for coral island formation during rising sea level in the central Pacific Ocean[J]. Geophysical Research Letters,2014-01-01,41(3).