Pliocene and Pleistocene geologic and climatic evolution in the San Luis Valley of south-central Colorado
dc.contributor.author | Rogers, Karel L. | en_US |
dc.contributor.author | Larson, Edwin E. | en_US |
dc.contributor.author | Smith, Gary | en_US |
dc.contributor.author | Katzman, Danny | en_US |
dc.contributor.author | Smith, Gerald R. | en_US |
dc.contributor.author | Cerling, Thure | en_US |
dc.contributor.author | Wang, Yang | en_US |
dc.contributor.author | Baker, Richard G. | en_US |
dc.contributor.author | Lohmann, Kyger C. | en_US |
dc.contributor.author | Repenning, Charles A. | en_US |
dc.date.accessioned | 2006-04-10T15:09:31Z | |
dc.date.available | 2006-04-10T15:09:31Z | |
dc.date.issued | 1992-07 | en_US |
dc.identifier.citation | Rogers, Karel L., Larson, Edwin E., Smith, Gary, Katzman, Danny, Smith, Gerald R., Cerling, Thure, Wang, Yang, Baker, Richard G., Lohmann, K. C., Repenning, Charles A. (1992/07)."Pliocene and Pleistocene geologic and climatic evolution in the San Luis Valley of south-central Colorado." Palaeogeography, Palaeoclimatology, Palaeoecology 94(1-4): 55-86. <http://hdl.handle.net/2027.42/29956> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6V6R-48C7F28-78/2/c50aff0656e29b3fd321ea5bbe9f657b | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/29956 | |
dc.description.abstract | Sediments of the Alamosa Formation spanning the upper part of the Gauss and most of the Matuyama Chrons were recovered by coring in the high (2300 m) San Luis Valley of south-central Colorado. The study site is located at the northern end of the Rio Grande rift. Lithologic changes in the core sediments provide evidence of events leading to integration of the San Luis drainage basin into the Rio Grande. The section, which includes the Huckleberry Ridge Ash (2.02 Ma) and spans the entire Matuyama Chron, contains pollen, and invertebrate and vertebrate fossils. Stable isotope analyses of inorganic and biogenic carbonate taken over most of the core indicate substantially warmer temperatures than occur today in the San Luis Valley. At the end of the Olduvai Subchron, summer precipitation decreased, summer pan evaporation increased, and temperatures increased slightly compared to the earlier climate represented in the core. By the end of the Jaramillo Subchron, however, cold/wet and warm/dry cycles become evident and continue into the cold/wet regime associated with the deep-sea oxygen-isotope Stage 22 glaciation previously determined from outcrops at the same locality. Correspondence between the Hansen Bluff climatic record and the deep-sea oxygen-isotope record (oxygen-isotope stages from about 110-18) is apparent, indicating that climate at Hansen Bluff was responding to global climatic changes. | en_US |
dc.format.extent | 2831180 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | Pliocene and Pleistocene geologic and climatic evolution in the San Luis Valley of south-central Colorado | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Geology and Earth Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Museum of Paleontology, University of Michigan, Ann Arbor, MI 48104, USA | en_US |
dc.contributor.affiliationum | Department of Geological Science, University of Michigan, Ann Arbor, MI 48104, USA | en_US |
dc.contributor.affiliationother | Department of Biology, Adams State College, Alamosa, CO 81102, USA | en_US |
dc.contributor.affiliationother | Department of Geological Sciences, University of Colorado, Boulder, CO 80309, USA | en_US |
dc.contributor.affiliationother | Department of Geology, University of New Mexico, Albuquerque, NM 87131, USA | en_US |
dc.contributor.affiliationother | Department of Geology, University of New Mexico, Albuquerque, NM 87131, USA | en_US |
dc.contributor.affiliationother | Department of Geology, University of Utah, Salt Lake City, UT 84112, USA | en_US |
dc.contributor.affiliationother | Department of Geology, University of Utah, Salt Lake City, UT 84112, USA | en_US |
dc.contributor.affiliationother | Department of Geology, University of Iowa, Iowa City, IA 52242, USA | en_US |
dc.contributor.affiliationother | Paleontology and Stratigraphy Branch, US Geological Survey MS 919, Box 25046 Federal Center, Denver, CO 80225, USA | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/29956/1/0000316.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0031-0182(92)90113-J | en_US |
dc.identifier.source | Palaeogeography, Palaeoclimatology, Palaeoecology | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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