U-series evidence for widespread reef development in Shark Bay during the last interglacial
Field observations and U-series ages reveal that Shark Bay, Western Australia (WA) has been inundated by the sea on at least three occasions during the Late Pleistocene/Holocene, resulting in a succession of marine deposits around the Bay. The exact age of these deposits has until now been problemat...
| Main Authors: | , , |
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| Format: | Journal Article |
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Elsevier Science BV
2008
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0031018207005317# http://hdl.handle.net/20.500.11937/5244 |
| _version_ | 1848744742182977536 |
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| author | O'Leary, Mick Hearty, P. Mcculloch, M. |
| author_facet | O'Leary, Mick Hearty, P. Mcculloch, M. |
| author_sort | O'Leary, Mick |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Field observations and U-series ages reveal that Shark Bay, Western Australia (WA) has been inundated by the sea on at least three occasions during the Late Pleistocene/Holocene, resulting in a succession of marine deposits around the Bay. The exact age of these deposits has until now been problematic due to a lack of reliable and accurate age data. This study reports 16 new U-series coral dates from emergent reef deposits around Shark Bay, and point to an extended period of coral reef development during the peak of the last interglacial, marine isotope stage (MIS) 5e. This is attributed to enhancement of marine circulation within the reaches and basins, a result of higher sea levels and an absence of major sill and bank structures. Stromatolites are absent from the geological record within Shark Bay until the late Holocene, suggesting that sea levels and marine sedimentary processes that have operated during the present sea-level highstand are unique to this period. There is little direct evidence of fossil reef development occurring during interglacials of the middle/late Pleistocene (MIS 9/11). |
| first_indexed | 2025-11-14T06:06:18Z |
| format | Journal Article |
| id | curtin-20.500.11937-5244 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:06:18Z |
| publishDate | 2008 |
| publisher | Elsevier Science BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-52442017-02-28T01:29:47Z U-series evidence for widespread reef development in Shark Bay during the last interglacial O'Leary, Mick Hearty, P. Mcculloch, M. U-series Reef Stromatolite MIS 5e Hypersaline Shark Bay Field observations and U-series ages reveal that Shark Bay, Western Australia (WA) has been inundated by the sea on at least three occasions during the Late Pleistocene/Holocene, resulting in a succession of marine deposits around the Bay. The exact age of these deposits has until now been problematic due to a lack of reliable and accurate age data. This study reports 16 new U-series coral dates from emergent reef deposits around Shark Bay, and point to an extended period of coral reef development during the peak of the last interglacial, marine isotope stage (MIS) 5e. This is attributed to enhancement of marine circulation within the reaches and basins, a result of higher sea levels and an absence of major sill and bank structures. Stromatolites are absent from the geological record within Shark Bay until the late Holocene, suggesting that sea levels and marine sedimentary processes that have operated during the present sea-level highstand are unique to this period. There is little direct evidence of fossil reef development occurring during interglacials of the middle/late Pleistocene (MIS 9/11). 2008 Journal Article http://hdl.handle.net/20.500.11937/5244 http://www.sciencedirect.com/science/article/pii/S0031018207005317# Elsevier Science BV restricted |
| spellingShingle | U-series Reef Stromatolite MIS 5e Hypersaline Shark Bay O'Leary, Mick Hearty, P. Mcculloch, M. U-series evidence for widespread reef development in Shark Bay during the last interglacial |
| title | U-series evidence for widespread reef development in Shark Bay during the last interglacial |
| title_full | U-series evidence for widespread reef development in Shark Bay during the last interglacial |
| title_fullStr | U-series evidence for widespread reef development in Shark Bay during the last interglacial |
| title_full_unstemmed | U-series evidence for widespread reef development in Shark Bay during the last interglacial |
| title_short | U-series evidence for widespread reef development in Shark Bay during the last interglacial |
| title_sort | u-series evidence for widespread reef development in shark bay during the last interglacial |
| topic | U-series Reef Stromatolite MIS 5e Hypersaline Shark Bay |
| url | http://www.sciencedirect.com/science/article/pii/S0031018207005317# http://hdl.handle.net/20.500.11937/5244 |