A late quarternary marine palynological record (oxygen isotope stages 1 to 7) for the humid tropics of northeastern Australia based on ODP Site 820

Moss, Patrick T. and Kershaw, A. Peter (2007) A late quarternary marine palynological record (oxygen isotope stages 1 to 7) for the humid tropics of northeastern Australia based on ODP Site 820. Palaeogeography, Palaeoclimatology, Palaeoecology, 251 1: 4-22. doi:10.1016/j.palaeo.2007.02.014


Author Moss, Patrick T.
Kershaw, A. Peter
Title A late quarternary marine palynological record (oxygen isotope stages 1 to 7) for the humid tropics of northeastern Australia based on ODP Site 820
Journal name Palaeogeography, Palaeoclimatology, Palaeoecology   Check publisher's open access policy
ISSN 0031-0182
Publication date 2007-02-27
Sub-type Article (original research)
DOI 10.1016/j.palaeo.2007.02.014
Volume 251
Issue 1
Start page 4
End page 22
Total pages 18
Editor D. J. Bottjer
T. Correge
P. Kershaw
F. Surlyk
Place of publication Amsterdam, The Netherlands
Publisher Elsevier
Collection year 2008
Language eng
Subject 260113 Palynology
C1
780104 Earth sciences
Abstract A late Quaternary marine palynological record from the Ocean Drilling Program (ODP) site 820, adjacent to the humid tropics region of northeastern Australia, has demonstrated marked variation in orbital scale cyclicity, and also trends associated with both climate and human impact. However, some uncertainties in interpretation have resulted from concerns about the records chronology and continuity. Here we present, for the first time, the complete palynological data from detailed analysis of the top 67 m of sediment and examine it in relation to the marine isotope sequence from the core. It is proposed that the record is relatively continuous through the last 250,000 years although the latter part of oxygen isotope stage (OIS) 5, as well OIS 4 may be missing. Despite the variation on orbital scales, most palynological changes are not in phase with those from the marine isotope record suggesting a lack of direct Milankovitch forcing on vegetation. This lack of correspondence combined with major trends towards more open and sclerophyllous vegetation in association with increased burning supports a previous proposal that major control is being exercised by El Nino-Southern Oscillation variability whose influence may have been initiated by changes in oceanic circulation in the region within the mid Pleistocene. The lack of impact on the distribution of complex rainforest suggests that increased climate variability did not involve an overall decrease in total precipitation. (C) 2007 Elsevier B.V. All rights reserved.
Keyword Geography, Physical
Geosciences, Multidisciplinary
Paleontology
Australia
Late quaternary
Climate change
human impact
Marine Palynology
Rainforest History
West Equatorial Africa
Great Barrier Reef
Pollen Record
Continental-shelf
North Queensland
Climactic change
Coral Sea
Terrestrial
Pleistocene
Vegetation
Q-Index Code C1
Q-Index Status Confirmed Code
Additional Notes Journal theme title: Environmental History of the Humid Tropics region of north-east Australia

 
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Created: Mon, 28 Apr 2008, 10:19:28 EST by Deirdre Timo on behalf of School of Geography, Planning & Env Management