LATE HOLOCENE CLIMATES OF NORTH-CENTRAL TEXAS

Authors
Citation
Do. Brown, LATE HOLOCENE CLIMATES OF NORTH-CENTRAL TEXAS, Plains Anthropologist, 43(164), 1998, pp. 157-172
Citations number
62
Categorie Soggetti
Anthropology
Journal title
ISSN journal
00320447
Volume
43
Issue
164
Year of publication
1998
Pages
157 - 172
Database
ISI
SICI code
0032-0447(1998)43:164<157:LHCONT>2.0.ZU;2-F
Abstract
Recent investigations at a multicomponent archaeological site (41DL270 ) along Denton Creek in Denton and Dallas Counties, Texas, yielded a s eries of mussel shell features which were sampled for isotopic variati on in oxygen and carbon. Oxygen values showed a marked trend which may indicate that delta(18)O can be used as a reliable paleoclimatic indi cator in small riverine drainage systems such as Denton Creek. The del ta(13)C values exhibited high variability and were more difficult to i nterpret meaningfully, but are clearly related to the oxygen values. T he paleoclimatic patterns inferred from the isotope variation support several recent interpretations of Late Holocene climatic change in the north-central Texas region which suggest a possible cooler and/or wet ter period between 1500 and 2500 years ago, framed by warmer/drier per iods before and after.