DOI: 10.1016/j.quascirev.2016.04.019
Scopus记录号: 2-s2.0-84971224794
论文题名: Coral indicators of past sea-level change: A global repository of U-series dated benchmarks
作者: Hibbert F.D. ; Rohling E.J. ; Dutton A. ; Williams F.H. ; Chutcharavan P.M. ; Zhao C. ; Tamisiea M.E.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 145 起始页码: 1
结束页码: 56
语种: 英语
英文关键词: Coral
; Sea-level
; U-series dating
Scopus关键词: Biological materials preservation
; Ecology
; Ecosystems
; Metadata
; Quality control
; Repair
; Stratigraphy
; Surveys
; Uncertainty analysis
; Biological interactions
; Contextual information
; Coral
; Depth distribution
; Ecological information
; Ecological studies
; Sea-level reconstruction
; U-series dating
; Sea level
; bioindicator
; coral
; database
; fossil assemblage
; global perspective
; Last Interglacial
; metadata
; reconstruction
; repository
; sea level change
; tectonic setting
; uranium isotope
; uranium series dating
; vertical distribution
; Anthozoa
英文摘要: Fossil corals provide valuable data for reconstructing past sea levels, as they are often well preserved in the fossil record and can be dated with U-series methods. Here we present a global and internally consistent database of U. Th dated fossil coral sea-level indicators, including full consideration of all (known) associated uncertainties (both vertical and chronological). We include carefully determined taxon-specific depth distributions, rather than blanket depth uncertainty terms as used in most previous work. This is based on a synthesis of extensive modern ecological information on depth ranges. These ranges are found to be spatially variable (between ocean basins, between regions, and on sub-regional scales) because depth itself is not limiting - instead, depth distributions arise from complex physical, chemical, and biological interactions with coral-reef growth, distribution, and composition. One of the main causes for recognition of the greater depth-variability of coral taxa has been the routine inclusion of deep-diving and ROV surveys in coral ecological studies over the past few decades, which has broken through the "shallow-water" bias of early surveys by adding frequent observations on deeper occurrences (although more are needed). It is also clear from our assessment that coral habitat-depth distributions must be determined on the species level to reduce uncertainties in reconstructions of past sea levels, and that application to sea-level studies then requires these studies also to identify fossil corals to the species level. Samples identified only to the genus level give rise to wide uncertainties in habitat depth and, hence, sea level. Our database contains extensive metadata to assist evaluations of dating quality, as well as geomorphic and stratigraphic metadata. We demonstrate with examples how such metadata can help to evaluate sea-level reconstructions, for example by identifying outlier points. One example discusses the Last Interglacial (LIG), where we use the available data with their uncertainties to assess probabilistically the time at which local sea levels exceed that of the present, which yields a mean age of 124.6 ka with 95% probability bounds at 118.5 and 129.5 ka. We conclude with identification of key outstanding issues relating to: (i) current incomplete understanding of tectonic setting (including the current lack of independent verification of uplift/subsidence rates and reliance of somewhat unsatisfactory, and circular, use of the elevation of Last Interglacial deposits); (ii) the depth-distributions of coral taxa and (iii) the complete documentation of stratigraphic, geomorphological and other contextual information, with suggestions for strategies to address these issues. © 2016 Elsevier Ltd. 资助项目: We thank the editors at QSR for inviting this review, Dan Muhs and Anthony Dosseto for their thoughtful reviews that improved the manuscript, Belinda Dechnik for the photographs (Fig. 2) and colleagues for fruitful discussions at PALSEA2 conferences. This work was supported by NERC Consortium Grant iGlass: Using Interglacials to Assess Future Sea Level Scenarios (NE/I009906/1), 2012 Australian Laureate Fellowship FL120100050 to EJR, and NSF grant 1443037 to AD.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59543
Appears in Collections: 过去全球变化的重建
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作者单位: Research School of Earth Sciences, The Australian National University, Canberra, ACT, Australia; Ocean and Earth Sciences, University of Southampton, National Oceanography Centre, Southampton, United Kingdom; Department of Geological Sciences, University of Florida, Gainesville, FL, United States; National Oceanography Centre, 6 Brownlow Street, Liverpool, United Kingdom
Recommended Citation:
Hibbert F.D.,Rohling E.J.,Dutton A.,et al. Coral indicators of past sea-level change: A global repository of U-series dated benchmarks[J]. Quaternary Science Reviews,2016-01-01,145