New evidence for the Holocene sea-level high from the inner shelf, central Great Barrier Reef, Australia

Beaman, Robin J, Larcombe, Piers, and Carter, Robert M (1994) New evidence for the Holocene sea-level high from the inner shelf, central Great Barrier Reef, Australia. Journal of Sedimentary Research, 64 (4a). pp. 881-885.

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Abstract

Radiocarbon dates from fossil oyster beds of intertidal origin on Magnetic Island, north Queensland indicate that the local Holocene maximum of relative sea-level was attained no later than 5660 +/- 50 B.P. (conventional uncorrected age) and remained at 1.6-1.7 m above modern levels until 4040 +/- 50 B.P. Given the tectonic stability of the area, this implies that eustatic sea-level remained at its Holocene peak for at least ca. 1600 yr. The new high-precision sea-level data indicate sea levels 1-5 m higher than those of the same age inferred from buried mangrove deposits on the inner shelf in north Queensland. Uncertainties in deriving relative sea-level from such mangrove deposits may be a significant source of error in worldwide attempts to distinguish the eustatic and crustal warping components off relative sea-level change, especially in the tropics.

Item ID: 1043
Item Type: Article (UNSPECIFIED)
Keywords: Great Barrier Reef, Sea-level, Holocene, Oysters
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Copyright © 1994, SEPM. Society for Sedimentary Geology - All Rights Reserved

ISSN: 1527-1404
Date Deposited: 03 Nov 2006
FoR Codes: 04 EARTH SCIENCES > 0406 Physical Geography and Environmental Geoscience @ 0%
04 EARTH SCIENCES > 0403 Geology > 040310 Sedimentology @ 0%
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