Publication Date:
2001-02-24
Description:
Milankovitch orbital forcing theory has been used to assign time scales to many paleoclimate records. However, the validity of this theory remains uncertain, and independent sea-level chronologies used to test its applicability have been restricted largely to the past approximately 135,000 years. Here, we report U-series ages for coral reefs formed on Henderson Island during sea-level high-stands occurring at approximately 630,000 and approximately 330,000 years ago. These data are consistent with the hypothesis that interglacial climates are forced by Northern Hemisphere summer solar insolation centered at 65 degrees N latitude, as predicted by Milankovitch theory.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stirling, C H -- Esat, T M -- Lambeck, K -- McCulloch, M T -- Blake, S G -- Lee, D C -- Halliday, A N -- New York, N.Y. -- Science. 2001 Jan 12;291(5502):290-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063, USA. stirling@erdw.ethz.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11209076" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
*Climate
;
*Cnidaria/chemistry/growth & development
;
Mass Spectrometry
;
Pacific Islands
;
Radioisotopes/analysis
;
Seawater
;
Thorium/analysis
;
Time
;
Uranium/analysis
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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