Holocene sea-level change and coastal landscape evolution in the southern Gulf of Carpentaria, Australia

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dc.contributor.authorSloss, CRen_AU
dc.contributor.authorNorthdurft, Len_AU
dc.contributor.authorHua, Qen_AU
dc.contributor.authorO'Connor, SGen_AU
dc.contributor.authorMoss, PTen_AU
dc.contributor.authorRosendahl, Den_AU
dc.contributor.authorPetherick, LMen_AU
dc.contributor.authorNanson, RAen_AU
dc.contributor.authorMackenzie, LLen_AU
dc.contributor.authorSternes, Aen_AU
dc.contributor.authorJacobsen, GEen_AU
dc.contributor.authorUlm, Sen_AU
dc.date.accessioned2024-01-17T05:15:24Zen_AU
dc.date.available2024-01-17T05:15:24Zen_AU
dc.date.issued2019-07-30en_AU
dc.date.statistics2023-03-24en_AU
dc.description.abstractA Holocene sea-level history for the southern Gulf of Carpentaria has been constructed based on a review of previously published data, combined with data collected for this study from a variety of sea-level proxies. These sea-level proxies include beach ridges, claypans, mangrove swamps, fossilized in situcoral reefs, beachrock and aeolinite deposits. Results confirm that rising sea-levels during the last Post-Glacial Marine transgression beached the Arafura Sill ca. 11,700 years ago (-53 m), resulting in a change from lacustrine to a marine environment. Sea levels continued to rise to ca. -30 m by 10,000 years ago. By 7,700 cal. yr BP sea-level reached PMSL and continued to rise an elevation of between 1.5 and 2 m above present mean sea-level by 7,000 years ago. Elevated sea levels resulted in the development of raised coral reefs, beach-rock and aeolinite deposits, and the initiation of chenier plains and beach ridges. Sea-level remained ca. +1.5 m above PMSL during the Holocene highstand, accompanied by distinct phases of beach-ridge and chenier plain development. The highstand was followed by arapid regression to within ±0.5 m of PMSL by ca. 3,500 cal. yr BP. When placed into a wider regional context results from this study show thatcoastal landscape evolution in the tropical north of Australia was not only dependenton sea-level change but also show a direct correlation with Holocene climatevariability. Specifically, the formation and preservation of beach-rock deposits,intertidal successions, beach and chenier ridge systems hold valuable sea-level and Holoceneclimate proxies that can contribute to the growing research into lowerlatitude Holocene sea-level and climate histories. ©2019 The Authors.en_AU
dc.identifier.citationSloss, C., Nothdurft, L., Hua, Q., Oconnor, S., Moss, P., Rosendahl, D., Petherick, L., Nanson, R., Mackenzie, L., Sternes, A., Jacobsen, G., & Ulm, S. (2019). Holocene sea-level change and coastal landscape evolution in the southern Gulf of Carpentaria, Australia. Poster presented to the 20th INQUA Congress 25th - 31st July 2019, Dublin, Ireland. Retrieved from: https://virtual.oxfordabstracts.com/#/event/public/574/submission/2892en_AU
dc.identifier.urihttps://virtual.oxfordabstracts.com/#/event/public/574/submission/2892en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15355en_AU
dc.language.isoenen_AU
dc.publisherInternational Union for Quaternary Research (INQUA)en_AU
dc.subjectQuaternary perioden_AU
dc.subjectSea levelen_AU
dc.subjectRocksen_AU
dc.subjectCoastal regionsen_AU
dc.subjectClimatic changeen_AU
dc.subjectAustraliaen_AU
dc.titleHolocene sea-level change and coastal landscape evolution in the southern Gulf of Carpentaria, Australiaen_AU
dc.typeConference Posteren_AU
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