Sea-level history of past interglacial periods from uranium-series dating of corals, Curacao, Leeward Antilles islands

Muhs, Daniel R., Pandolfi, John M., Simmons, Kathleen R. and Schumann, R. Randall (2012) Sea-level history of past interglacial periods from uranium-series dating of corals, Curacao, Leeward Antilles islands. Quaternary Research, 78 2: 157-169. doi:10.1016/j.yqres.2012.05.008


Author Muhs, Daniel R.
Pandolfi, John M.
Simmons, Kathleen R.
Schumann, R. Randall
Title Sea-level history of past interglacial periods from uranium-series dating of corals, Curacao, Leeward Antilles islands
Journal name Quaternary Research   Check publisher's open access policy
ISSN 0033-5894
1096-0287
Publication date 2012-09-01
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.yqres.2012.05.008
Open Access Status Not yet assessed
Volume 78
Issue 2
Start page 157
End page 169
Total pages 13
Place of publication Maryland Heights, MO, United States
Publisher Academic Press
Language eng
Abstract Curaçao has reef terraces with the potential to provide sea-level histories of interglacial periods. Ages of the Hato (upper) unit of the “Lower Terrace” indicate that this reef dates to the last interglacial period, Marine Isotope Stage (MIS) 5.5. On Curaçao, this high sea stand lasted at least 8000 yr (~ 126 to ~ 118 ka). Elevations and age of this reef show that late Quaternary uplift rates on Curaçao are low, 0.026–0.054 m/ka, consistent with its tectonic setting. Ages of ~ 200 ka for corals from the older Cortalein unit of the Lower Terrace correlate this reef to MIS 7, with paleo-sea level estimates ranging from − 3.3 m to + 2.3 m. The estimates are in agreement with those for MIS 7 made from other localities and indicate that the penultimate interglacial period was a time of significant warmth, on a par with the present interglacial period. The ~ 400 ka (MIS 11) Middle Terrace I on Curaçao, dated by others, may have formed from a paleo-sea level of + 8.3 to + 10.0 m, or (less likely) + 17 m to + 20 m. The lower estimates are conservative compared to previous studies, but still require major ice sheet loss from Greenland and Antarctica.
Keyword Curacao
Corals
Reefs
U-series dating
Uplift rate
Last interglacial
Penultimate interglacial
Sea level
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Biological Sciences Publications
 
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Created: Thu, 01 Nov 2012, 01:00:59 EST by Gail Walter on behalf of School of Biological Sciences