A late Quaternary marine palynological record (Oxygen Isotope Stages 1 to 7) for the humid tropics of northeastern Australia based on ODP Site 820

Online Access: Get full text
doi: 10.1016/j.palaeo.2007.02.014
Author(s): Moss, Patrick T.; Kershaw, A. Peter
Author Affiliation(s): Primary:
University of Queensland, School of Geography, Planning and Architecture, Brisbane, Queensl., Australia
Other:
Australian National University, Australia
University of Wollongong, Australia
Monash University, Australia
Volume Title: Environmental history of the humid tropics region of north-east Australia
Volume Author(s): Kershaw, A. Peter, editor; Haberle, Simon G.; Turney, Chris S. M.; Bretherton, Sophie C.
Source: Environmental history of the humid tropics region of north-east Australia, edited by A. Peter Kershaw, Simon G. Haberle, Chris S. M. Turney and Sophie C. Bretherton. Palaeogeography, Palaeoclimatology, Palaeoecology, 251(1), p.4-22. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0031-0182 CODEN: PPPYAB
Note: In English. 47 refs.; illus., incl. charts, sketch map
Summary: 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. Abstract Copyright (2007) Elsevier, B.V.
Year of Publication: 2007
Research Program: ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Atherton Tableland; Australasia; Australia; Biozones; Cenozoic; Chronology; Climate change; Cores; Correlation; Forests; Glacial environment; Glaciomarine environment; High-resolution methods; Human activity; Humid environment; Interglacial environment; Leg 133; Lynch's Crater; Marine environment; Marine sediments; Miospores; Northeastern Australia; ODP Site 820; Ocean Drilling Program; Oxygen isotope stages; Pacific Ocean; Paleo-oceanography; Paleocirculation; Paleoecology; Palynomorphs; Plantae; Pollen; Pollen diagrams; Quaternary; Queensland Australia; Rain forests; Sediments; South Pacific; Southwest Pacific; Terrestrial environment; Tropical environment; Upper Quaternary; Vegetation; West Pacific
Coordinates: S173000 S170000 E1460000 E1450000
S163814 S163813 E1461814 E1461813
Record ID: 2007107106
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands