TY - JOUR
T1 - A Holocene climatic record for the Sonoran Desert from pollen analysis of Montezuma Well, Arizona, USA
AU - Davis, Owen K.
AU - Shafer, David S.
N1 - Funding Information:
We thank Glen E. HendersonS, uperintendent, MontezumaC astleNational Monument, for permission to obtain the MontezumaW ell core; the 1985 Universityo f Arizona Geoscience4s6 2 class for help in coring the lake; and Kik Moore for extractingth e first set of pollen samplesW. e grate- fully acknowledgteh e financials upporto f University of Arizona Grant 424002, and NSF grants SES-8800631,A TM-8619467, and SES-9009974. Several1 4C samplesw eredated at the NSF Accelerator Facility at the University of Arizona and were partiallyfu ndedb y NSF grant EAR-8512761. Lisa Ely provide useful editorial commentsT. his paper is a contributiont o IGCP 252, "Past and Future Evolution of Deserts."
PY - 1992/3
Y1 - 1992/3
N2 - Pollen and macrofossil analyses of a radiocarbon-dated core, 1125 cm long, from Montezuma Well, elev. 1125 m, Yavapai County, Arizona, provide a record of summer precipitation similar to that of other monsoonal regions of the world. Precipitation was least from 4000 to 5000 yr B.P., and generally was greater than today before 8400 yr B.P. During the early-Holocene moist period, oak and grass pollen are abundant, and the best modern analogs are within the Arizona Monsoon boundary, so increased summer precipitation is indicated. Climatic parameters are estimated with the technique of best modern analogs for fossil samples. Temperature was highest ca. 3400 and 5700 yr B.P., and generally was cooler than today before 6800 yr B.P. Brief cold intervals in the Holocene match periods of global cooling and of positive 14C and 10Be anomalies.
AB - Pollen and macrofossil analyses of a radiocarbon-dated core, 1125 cm long, from Montezuma Well, elev. 1125 m, Yavapai County, Arizona, provide a record of summer precipitation similar to that of other monsoonal regions of the world. Precipitation was least from 4000 to 5000 yr B.P., and generally was greater than today before 8400 yr B.P. During the early-Holocene moist period, oak and grass pollen are abundant, and the best modern analogs are within the Arizona Monsoon boundary, so increased summer precipitation is indicated. Climatic parameters are estimated with the technique of best modern analogs for fossil samples. Temperature was highest ca. 3400 and 5700 yr B.P., and generally was cooler than today before 6800 yr B.P. Brief cold intervals in the Holocene match periods of global cooling and of positive 14C and 10Be anomalies.
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U2 - 10.1016/0031-0182(92)90137-T
DO - 10.1016/0031-0182(92)90137-T
M3 - Article
AN - SCOPUS:0026473004
SN - 0031-0182
VL - 92
SP - 107
EP - 119
JO - Palaeogeography, Palaeoclimatology, Palaeoecology
JF - Palaeogeography, Palaeoclimatology, Palaeoecology
IS - 1-2
ER -