Evidence of glacial advances from New Zealand cave deposits

Author(s): Williams, Paul W.
Author Affiliation(s): Primary:
University of Auckland, Department of Geography, Auckland, New Zealand
Volume Title: Proceedings of the 12th international congress of Speleology; Symposium 7, Physical speleology; Symposium 8, Karst geomorphology
Volume Author(s): Jeannin, Pierre-Yves, editor
Source: location varies [Proceedings of the International Congress of Speleology, Vol.12(Vol. 1), p.92; 12th international congress of Speleology; Symposium 7, Physical speleology; Symposium 8, Karst geomorphology, La Chaux-de-Fonds, Switzerland, Aug. 10-17, 1997, edited by Pierre-Yves Jeannin. Publisher: International Union of Speleology,], United States. ISSN: 0731-3136 CODEN: 35ZFAE
Note: In English
Summary: Caves overrun by glaciers are known to accumulate dateable evidence of past glacial and interglacial events. Results are reported from investigations of Aurora Cave in Fiordland, southern New Zealand, and from other caves. Aurora Cave is situated in the side of a glacial trough. The cave commenced to form before 230 ka B.P. Sequences of glacifluvial sediments interbedded with speleothems are evidence of the number and timing of glacial advances and the status of intervals between them. Twenty-six uranium series dates on speleothems underpin a chronology of seven glacial advances in the last 230 ka, with the peak of the last main glacial advance at ca. 19 ka BP. With five advances in the Last Glacial, it is more complex than previously recognised in New Zealand. Comparison of the evidence from caves with that recorded in deep sea sediments 300 km offshore from DSDP Site 594 reveals little matching. The results from caves support polar cap ice-core evidence for abrupt climate changes, but do not support synchroneity of onshore/offshore events.
Year of Publication: 1997
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 24 Surficial Geology, Quaternary Geology; Aurora Cave; Australasia; Caves; Cenozoic; Climate change; Correlation; DSDP Site 594; Deep Sea Drilling Project; Depositional environment; Fiordland National Park; Fluvial sedimentation; Glacial environment; Glacial geology; Glacial sedimentation; Glaciofluvial sedimentation; IPOD; Ice movement; Leg 90; New Zealand; Pacific Ocean; Paleoclimatology; Quaternary; Sedimentation; South Island; South Pacific; Southland New Zealand; Southwest Pacific; West Pacific
Coordinates: S453129 S453128 E1745653 E1745652
S464100 S444500 E1691600 E1662500
Record ID: 1998054690
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