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Correlations of the Clear Lake, California, Core CL-73-4 pollen sequence with other long climate records

David P. Adam
Correlations of the Clear Lake, California, Core CL-73-4 pollen sequence with other long climate records (in Late Quaternary climate, tectonism, and sedimentation in Clear Lake, Northern California Coast Ranges, John D. Sims (editor))
Special Paper - Geological Society of America (1988) 214: 81-95

Abstract

Clear Lake core CL-73-4 records fluctuating abundances of oak pollen during the last glacial/interglacial cycle that correlate remarkably well with fluctuations in extensive pollen records from Grande Pile in France and Tenaghi Phillipon in Macedonia, as well as with the oxygen-isotope records from deep-sea cores. The record correlates less closely with other extensive records, including those for Lake Biwa, Japan, and Sabana de Bogota, Colombia. Correlation of the record with the early Weichselian climatic sequence of northwestern Europe is excellent; both sequences show a series of five cryomer/thermomer fluctuations between the end of the last interglaciation (Eemian/Konocti, which is correlated with the end of marine oxygen-isotope Stage 5e) and the onset of full continental glaciation at the end of Stage 5a. The fluctuations correlate both in their relative durations and in their relative amplitudes. The Clear Lake record also correlates with various North American sequences. The Sangamon interval of the mid-continent area correlates with the entire Konocti thermomer and early Pomo cryomer interval, and correlations with the glacial sequences of the Sierra Nevada and Rocky Mountains suggest that some Tahoe, Mono Basin, and Bull Lake moraines may be of Sangamon age. The proposed correlations of the Clear Lake record with other sequences have not been proved. The overall impression, however, is one of remarkable consistency, and it is likely that further work will provide more evidence in support of the sequence of five cryomer/thermomer cycles between the end of the last interglacial period and the onset of full glacial conditions about 70,000 years ago. This sequence is much more complicated than has been generally recognized, although parts of it have been known for many years. The sequence, which has now been found in several widely separated areas, should no longer be ignored. (See also W89-10137) (Author 's abstract)


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 214
Title: Correlations of the Clear Lake, California, Core CL-73-4 pollen sequence with other long climate records
Title: Late Quaternary climate, tectonism, and sedimentation in Clear Lake, Northern California Coast Ranges
Author(s): Adam, David P.
Author(s): Sims, John D.editor
Affiliation: U. S. Geol. Surv., Menlo Park, CA, United States
Affiliation: U. S. Geol. Surv., Menlo Park, CA, United States
Pages: 81-95
Published: 1988
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 0-8137-2214-4
References: 85
Accession Number: 1988-068791
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
N42°30'00" - N51°00'00", W05°00'00" - E08°30'00"
N35°01'60" - N35°32'60", E135°49'60" - E136°16'00"
N40°52'00" - N42°15'00", E20°26'60" - E23°04'60"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from USGS product, Selected Water Resources Abstracts, Reston, VA, United States
Update Code: 1988
Program Name: USGSOPNon-USGS publications with USGS authors
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