Arid
DOI10.1139/e98-060
Paleoclimatic changes during the Late Pleistocene-Holocene in Laguna Babicora, near the Chihuahuan Desert, Mexico
Ortega-Ramirez, JR; Valiente-Banuet, A; Urrutia-Fucugauchi, J; Mortera-Gutierrez, CA; Alvarado-Valdez, G
通讯作者Ortega-Ramirez, JR
来源期刊CANADIAN JOURNAL OF EARTH SCIENCES
ISSN0008-4077
EISSN1480-3313
出版年1998
卷号35期号:10页码:1168-1179
英文摘要

The paleoclimatic variability of northern Mexico since the Late Wisconsinan is determined from sedimentological, geochemical, and stratigraphic studies of the lacustrine sequence of Laguna Babicora (29.4 degrees N, 107.7 degrees W; elevation 2100 m asl). Chronological control is based on 13 radiocarbon dates (6 from this study and 7 previously reported) from four stratigraphic profiles that cover a range from 16 342 to 2800 BP. Two major periods of increased humidity are recognized by lake-level variation during the Late Wisconsinan and early Holocene. The Late Wisconsinan humid period may be related to jet stream migration to southerly latitudes and the influence of the mobile polar high. This period has been identified in the sedimentary record of El Diablo profile with a radiocarbon date of 16 342 +/- 201 BP. The early Holocene humid period is recorded in Fl Diablo (10 976 +/- 115 BP) and Cane profiles (9614 +/- 130 BP). It is interpreted as a result of the Younger Dryas climatic anomaly characterized by a temperature decrease and cold paleoclimatic conditions similar to those for the Late Wisconsinan. The early Holocene was followed by an overall gradual drying that reached a maximum around 6000 BP, during the middle Holocene. For the late Holocene evidence of widespread erosion, sedimentation changes, flooded surfaces, and paleosoils indicates that Laguna Babicora was subjected to short-term climatic changes.


类型Article
语种英语
国家Mexico
收录类别SCI-E
WOS记录号WOS:000079398300008
WOS关键词SOUTHWESTERN UNITED-STATES ; NORTH-AMERICA ; CLIMATE ; LAKE ; WOODLANDS ; OCEAN ; TEXAS ; AGE ; BP
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
来源机构Universidad Nacional Autónoma de México
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/135491
作者单位(1)Univ Nacl Autonoma Mexico, Inst Geofis, Dept Geomagnetismo & Explorac Geofis, Mexico City 04510, DF, Mexico;(2)Univ Nacl Autonoma Mexico, Inst Ecol, Dept Ecol Func & Aplicada, Mexico City 04510, DF, Mexico;(3)Univ Autonoma San Luis Potosi, Fac Ingn, San Luis Potosi, Mexico
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Ortega-Ramirez, JR,Valiente-Banuet, A,Urrutia-Fucugauchi, J,et al. Paleoclimatic changes during the Late Pleistocene-Holocene in Laguna Babicora, near the Chihuahuan Desert, Mexico[J]. Universidad Nacional Autónoma de México,1998,35(10):1168-1179.
APA Ortega-Ramirez, JR,Valiente-Banuet, A,Urrutia-Fucugauchi, J,Mortera-Gutierrez, CA,&Alvarado-Valdez, G.(1998).Paleoclimatic changes during the Late Pleistocene-Holocene in Laguna Babicora, near the Chihuahuan Desert, Mexico.CANADIAN JOURNAL OF EARTH SCIENCES,35(10),1168-1179.
MLA Ortega-Ramirez, JR,et al."Paleoclimatic changes during the Late Pleistocene-Holocene in Laguna Babicora, near the Chihuahuan Desert, Mexico".CANADIAN JOURNAL OF EARTH SCIENCES 35.10(1998):1168-1179.
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