New Zealand Maritime Glaciation: Millennial-Scale Southern Climate Change Since 3.9 Ma

Ocean Drilling Program Site 1119 is ideally located to intercept discharges of sediment from the mid-latitude glaciers of the New Zealand Southern Alps. The natural gamma ray signal from the site's sediment core contains a history of the South Island mountain ice cap since 3.9 million years ago...

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Bibliographic Details
Published in:Science
Main Authors: Carter, Robert M., Gammon, Paul
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 2004
Subjects:
Antarctic
New Zealand
Polar Plateau
Antarc*
Antarctica
Ice cap
ice core
Online Access:http://dx.doi.org/10.1126/science.1093726
https://www.science.org/doi/pdf/10.1126/science.1093726
Description
Summary:Ocean Drilling Program Site 1119 is ideally located to intercept discharges of sediment from the mid-latitude glaciers of the New Zealand Southern Alps. The natural gamma ray signal from the site's sediment core contains a history of the South Island mountain ice cap since 3.9 million years ago (Ma). The younger record, to 0.37 Ma, resembles the climatic history of Antarctica as manifested by the Vostok ice core. Beyond, and back to the late Pliocene, the record may serve as a proxy for both mid-latitude and Antarctic polar plateau air temperature. The gamma ray signal, which is atmospheric, also resembles the ocean climate history represented by oxygen isotope time series.

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