Journal ArticleDOI
Eustatic sea level 120,000 years ago on oahu, hawaii.
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TLDR
Extensive dating of the fossil corals associated with the Waimanalo shoreline on Oahu has shown that 120,000 years ago the ocean was approximately 7.6 meters above its present level, corroborating the notion that 120-000 years before the present was the last time during which the sea stood significantly higher than it does today.Abstract:
Extensive dating of the fossil corals associated with the Waimanalo shoreline on Oahu has shown that 120,000 years ago the ocean was approximately 7.6 meters above its present level. Corals grown during that time constitute a major portion of the subaerial reef-derived material on the island, with exposures ranging from about 10 meters to near sea level. This evidence corroborates the notion that 120,000 years before the present was the last time during which the sea stood significantly higher than it does today. The reported benches at 3.7, 1.5, and 0.6 meters, if not of Recent origin, could be features created by brief halts of the sea during rapid regression shortly after the Waimanalo high stand.read more
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References
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Journal ArticleDOI
Oxygen isotope and palaeomagnetic stratigraphy of Equatorial Pacific core V28-238: Oxygen isotope temperatures and ice volumes on a 105 year and 106 year scale☆
TL;DR: The core Vema 28-238 as discussed by the authors preserves an excellent oxygen isotope and magnetic stratigraphy and is shown to contain undisturbed sediments deposited continuously through the past 870,000 yr.
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Insolation changes, ice volumes, and the O18 record in deep‐sea cores
Wallace S. Broecker,Jan van Donk +1 more
TL;DR: In this article, a detailed curve of ice volume versus time is needed in order to test the validity of the hypothesis that changes in the earth's orbital parameters are the cause of oscillations in Pleistocene climate.
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Milankovitch Hypothesis Supported by Precise Dating of Coral Reefs and Deep-Sea Sediments
Wallace S. Broecker,David L. Thurber,John Goddard,Teh-Lung Ku,R. K. Matthews,Kenneth J. Mesolella +5 more
TL;DR: Data show a parallelism over the last 150,000 years between changes in Earth's climate and changes in the summer insolation predicted from cycles in the tilt and precession of Earth's axis.
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Th230/U238 and U234/U238 ages of Pleistocene high sea level stand
TL;DR: In this paper, the ages of the fossil corals were derived by using the Th230/U236 and U234/U238 isotopes, and the agreement between these ages was established.
Journal ArticleDOI
Astronomical theory of climatic change: support from new Guinea.
H. Herbert Veeh,John Chappell +1 more
TL;DR: Radiocarbon and thorium-230 dates of uplifted coral reef terraces on New Guinea appear to support theories of glaciation which utilize Milankovitch cycles as a controlling trigger mechanism, suggesting a marine transgression between 50,000 and 35,000 years before the present.