Pollen study of some Holocene alluvial deposits in Dona Ana County, southern New Mexico

TitlePollen study of some Holocene alluvial deposits in Dona Ana County, southern New Mexico
Publication TypeJournal Article
Year of Publication1972
AuthorsFreeman C.E
JournalThe Texas Journal of Science
Volume24
Pagination203-220
Date Published1972
Call Number00077
Keywordsarticle, articles, fossil pollen, geomorphology,alluvial deposits,pollen, Holocene,pollen, journal, journals, pollen, Holocene alluvial deposits, pollen, radiocarbon dating, radiocarbon dating,pollen, soil,alluvial deposits
AbstractThe fossil pollen spectra of 3 radiocarbon dated alluvial deposits at Gardner Spring, New Mexico were studied. The oldest of these sections spans the time from 5,000 to less than 4,000 radiocarbon years B.P. and indicates a desert shrub to grassland transition. This finding indicates that the dry altithermal of the Bryan-Antevs model may have been a reality in southern New Mexico. The 2nd deposit dated at younger than 2300 radiocarbon years indicates a drying trend that probably was not extreme. The 3rd deposit studied is younger than 1100 radiocarbon years and seems to indicate conditions very similar to those at the time end of the oldest cycle of deposition and grassland conditions.