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15 k.y. paleoclimatic and glacial record from northern New Mexico

Jake Armour, Peter J. Fawcett and John W. Geissman
15 k.y. paleoclimatic and glacial record from northern New Mexico
Geology (Boulder) (August 2002) 30 (8): 723-726


The southern Sangre de Cristo Mountains, New Mexico, contain evidence of glacial activity from the late Pleistocene to late Holocene. Sediment cores recovered from an alpine bog (3100 m) trapped behind a Pinedale age moraine, approximately 2 km downvalley from a high-elevation cirque, reached glacial-age debris and recovered approximately 6 m of lake clays overlain by gyttja. Accelerator mass spectrometry dating, sedimentology, variations in magnetic properties, and organic carbon data reveal six distinct periods of glacial and/or periglacial activity. These include a late Pleistocene Pinedale glacial termination just before 12 120 (super 14) C yr B.P., a Younger Dryas chron cirque glaciation, an early Neoglacial periglacial event (ca. 4900 (super 14) C yr B.P.), a late Holocene cirque glaciation (3700 (super 14) C yr B.P.), as well as late Holocene periglacial events at 2800 (super 14) C yr B.P. and the Little Ice Age (ca. 120 (super 14) C yr B.P.). Cold events in the middle to late Holocene correlate with subtle ice-rafting events in the North Atlantic and records of cold events in North America and Europe and were probably hemispheric in extent.

ISSN: 0091-7613
EISSN: 1943-2682
Serial Title: Geology (Boulder)
Serial Volume: 30
Serial Issue: 8
Title: 15 k.y. paleoclimatic and glacial record from northern New Mexico
Affiliation: University of New Mexico, Department of Earth and Planetary Sciences, Albuquerque, NM, United States
Pages: 723-726
Published: 200208
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 24
Accession Number: 2002-079345
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch map
N35°45'00" - N35°55'00", W105°46'60" - W105°40'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200224
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