Journal article
Speleothem carbon isotopic records of Holocene environments in the Ozark Highlands, USA; Holocene environmental change on the Great Plains of North America
Quaternary International, Vol.67, pp.21-27
2000
DOI: 10.1016/S1040-6182(00)00005-7
Abstract
The carbon isotopic compositions of six stalagmites from five caves in the Ozark Highlands of central and southern Missouri and northern Arkansas provide a detailed record of early and late Holocene vegetation dynamics. A rapid decrease in speleothem ∂13C values between ∼9500 and ∼8200 yr BP indicates a period of increased C3 vegetation, suggesting cool and/or moist conditions relative to the earliest Holocene and the prairie-dominated middle Holocene. A second negative ∂13C excursion from ∼4500 to ∼3000 yr BP interrupts a predominantly C4-rich middle Holocene prairie environment that became established at ∼7500 yr BP. Speleothem mineralogical indicators of cave aridity do not support previous inferences of increased regional dryness between 3800 and 3100 yr BP.
Details
- Title: Subtitle
- Speleothem carbon isotopic records of Holocene environments in the Ozark Highlands, USA; Holocene environmental change on the Great Plains of North America
- Creators
- Rhawn F. DennistonLuis A. GonzalezYemane AsmeromMark K. Reagan - University of IowaHeather Recelli-Snyder
- Resource Type
- Journal article
- Publication Details
- Quaternary International, Vol.67, pp.21-27
- DOI
- 10.1016/S1040-6182(00)00005-7
- ISSN
- 1040-6182
- Language
- English
- Date published
- 2000
- Academic Unit
- Earth and Environmental Sciences
- Record Identifier
- 9983557288402771
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