DOI: 10.1016/j.quascirev.2012.09.006
Scopus记录号: 2-s2.0-84880594847
论文题名: Post-glacial sea-level changes around the Australian margin: A review
作者: Lewis S.E. ; Sloss C.R. ; Murray-Wallace C.V. ; Woodroffe C.D. ; Smithers S.G.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 74 起始页码: 115
结束页码: 138
语种: 英语
英文关键词: Australia
; Holocene
; Post-glacial
; Sea level
; Sea-level change
; Sea-level indicators
Scopus关键词: Australia
; Australian continents
; Holocene sea-level change
; Holocenes
; Post-glacial
; Relative sea-level changes
; Sea-level oscillations
; Sealevel change
; Calibration
; Gages
; Glacial geology
; Research
; Tectonics
; Sea level
; ice sheet
; Last Glacial Maximum
; literature review
; neotectonics
; Northern Hemisphere
; Postglacial
; radiocarbon dating
; sea level change
; transgression
; twentieth century
; Australasia
英文摘要: It has been known since Rhodes Fairbridge's first attempt to establish a global pattern of Holocene sea-level change by combining evidence from Western Australia and from sites in the northern hemisphere that the details of sea-level history since the Last Glacial Maximum vary considerably across the globe. The Australian region is relatively stable tectonically and is situated in the 'far-field' of former ice sheets. It therefore preserves important records of post-glacial sea levels that are less complicated by neotectonics or glacio-isostatic adjustments. Accordingly, the relative sea-level record of this region is dominantly one of glacio-eustatic (ice equivalent) sea-level changes. The broader Australasian region has provided critical information on the nature of post-glacial sea level, including the termination of the Last Glacial Maximum when sea level was approximately 125. m lower than present around 21,000-19,000 years BP, and insights into meltwater pulse 1A between 14,600 and 14,300. cal.yr. BP. Although most parts of the Australian continent reveals a high degree of tectonic stability, research conducted since the 1970s has shown that the timing and elevation of a Holocene highstand varies systematically around its margin. This is attributed primarily to variations in the timing of the response of the ocean basins and shallow continental shelves to the increased ocean volumes following ice-melt, including a process known as ocean siphoning (i.e. glacio-hydro-isostatic adjustment processes).Several seminal studies in the early 1980s produced important data sets from the Australasian region that have provided a solid foundation for more recent palaeo-sea-level research. This review revisits these key studies emphasising their continuing influence on Quaternary research and incorporates relatively recent investigations to interpret the nature of post-glacial sea-level change around Australia. These include a synthesis of research from the Northern Territory, Queensland, New South Wales, South Australia and Western Australia. A focus of these more recent studies has been the re-examination of: (1) the accuracy and reliability of different proxy sea-level indicators; (2) the rate and nature of post-glacial sea-level rise; (3) the evidence for timing, elevation, and duration of mid-Holocene highstands; and, (4) the notion of mid- to late Holocene sea-level oscillations, and their basis.Based on this synthesis of previous research, it is clear that estimates of past sea-surface elevation are a function of eustatic factors as well as morphodynamics of individual sites, the wide variety of proxy sea-level indicators used, their wide geographical range, and their indicative meaning. Some progress has been made in understanding the variability of the accuracy of proxy indicators in relation to their contemporary sea level, the inter-comparison of the variety of dating techniques used and the nuances of calibration of radiocarbon ages to sidereal years. These issues need to be thoroughly understood before proxy sea-level indicators can be incorporated into credible reconstructions of relative sea-level change at individual locations. Many of the issues, which challenged sea-level researchers in the latter part of the twentieth century, remain contentious today. Divergent opinions remain about: (1) exactly when sea level attained present levels following the most recent post-glacial marine transgression (PMT); (2) the elevation that sea-level reached during the Holocene sea-level highstand; (3) whether sea-level fell smoothly from a metre or more above its present level following the PMT; (4) whether sea level remained at these highstand levels for a considerable period before falling to its present position; or (5) whether it underwent a series of moderate oscillations during the Holocene highstand. © 2012. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60579
Appears in Collections: 过去全球变化的重建
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作者单位: Catchment to Reef Research Group, TropWATER, James Cook University, Townsville, Qld 4811, Australia; Earth, Environmental and Biological Sciences, Queensland University of Technology, GPO Box 2434, Brisbane, Qld 4001, Australia; School of Earth and Environmental Sciences, University of Wollongong, Wollongong NSW 2522, Australia; School of Earth and Environmental Sciences, James Cook University, Townsville, Qld 4811, Australia
Recommended Citation:
Lewis S.E.,Sloss C.R.,Murray-Wallace C.V.,et al. Post-glacial sea-level changes around the Australian margin: A review[J]. Quaternary Science Reviews,2013-01-01,74