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学科主题: Geography, Physical; Geosciences, Multidisciplinary; Paleontology
题名: High-precision U-series ages of transported coral blocks on Heron Reef (southern Great Barrier Reef) and storm activity during the past century
作者: Yu, KF ; Zhao, JX ; Roff, G ; Lybolt, M ; Feng, YX ; Clark, T ; Li, S
通讯作者: yukefu@gmail.com
关键词: Storm activity ; Storm frequency ; Coral block ; Reef block ; U-series ages ; Great Barrier Reef
刊名: PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
发表日期: 2012
卷: 337, 页:23-36
部门归属: [Yu, Kefu; Zhao, Jianxin; Feng, Yuexing; Clark, Tara; Li, Shu] Univ Queensland, Radiogen Isotope Facil, Ctr Microscopy & Microanal, Brisbane, Qld 4072, Australia; [Yu, Kefu; Li, Shu] Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Roff, George; Lybolt, Matthew] Univ Queensland, Ctr Marine Studies, Brisbane, Qld 4072, Australia; [Roff, George; Lybolt, Matthew] Univ Queensland, ARC Ctr Excellence Coral Reef Studies, Brisbane, Qld 4072, Australia
项目归属: 海洋地质
摘要: Transported coral blocks scattered on reef flats have previously been identified as useful proxies for past storm occurrences. High-precision TIMS U-series dating and detailed field observations of 110 coral samples collected from 102 individual transported coral colonies (coral blocks) and 4 transported sections of reef matrix (reef blocks) from the northern side of Heron Reef (southern Great Barrier Reef) indicate that: (1) the youngest age of corals attached to reef blocks may represent the age of possible past storm occurrence, providing a proxy for historical storm reconstruction; (2) most ages of dated storm-transported coral and reef blocks match well relatively with known cyclone and storm events, further supporting that they are good indicators of past storm events; and (3) age distribution and relative probability frequency analysis of the dated coral and reef blocks suggest that there have been eight broad periods of storm occurrence since 1900 AD (1904-1909, 1914-1916, 1935-1941, 1945-1960, 1965-1967, 1976-1977, 1983-1988 and 2001-2007), roughly showing decadal variations. The coral-based storm reconstruction therefore extended the database of past storm occurrences around Heron Reef area. These findings suggest that coral reefs in the southern Great Barrier Reef are frequently influenced by periods of high storm activity, and show strong resilience to natural disturbances over the past century. Additionally, our results show for the first time that the blue skeletal coral Heliopora coerulea (Order: Helioporacae) has U concentrations of only 0.12 to 0.30 ppm, similar to 5-10% that of common reef building corals with white skeletons (Order: Scleractinia), which may be a unique chemical signature of the only living species of the Helioporidae family. (C) 2012 Elsevier B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000306032100003
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10335
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Yu, KF; Zhao, JX; Roff, G; Lybolt, M; Feng, YX; Clark, T; Li, S.High-precision U-series ages of transported coral blocks on Heron Reef (southern Great Barrier Reef) and storm activity during the past century,PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2012,337():23-36
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