Cation-ratio dating of quaternary materials in the east-central mojave desert, california

Ronald I. Dorn; Donna Tanner; Brent D. Turrin; John C. Dohrenwend

doi:10.1080/02723646.1987.10642312

Cation-ratio dating of quaternary materials in the east-central mojave desert, california

Ronald I. Dorn, Donna Tanner, Brent D. Turrin, John C. Dohrenwend

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

An excellent correlation is found between K+Ca:Ti ratios in rock varnishes and radiometric ages of K-Ar-dated basalt flows in the Cima volcanic field and accelerator-radiocarbon-dated varnishes from nearby sites in the east-central Mojave Desert of California. This calibration extends from about 1 million to about 100 years BP, allowing the chronometric dating of geomorphic and archaeologic surfaces in the eastcentral Mojave Desert. There are significant differences between this curve and the cation-leaching curve developed for the Coso Range, southestern California. Therefore, this curve cannot be used to determine the ages of rock varnishes in areas far beyond the east-central Mojave Desert.

Original language	English (US)
Pages (from-to)	72-81
Number of pages	10
Journal	Physical Geography
Volume	8
Issue number	1
DOIs	https://doi.org/10.1080/02723646.1987.10642312
State	Published - 1987
Externally published	Yes

Keywords

California
Cima volcanic field
Geomorphology
Mojave Desert
Quaternary dating methods
Rock varnish

ASJC Scopus subject areas

Environmental Science(all)
Atmospheric Science
Earth and Planetary Sciences (miscellaneous)
Earth and Planetary Sciences(all)

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10.1080/02723646.1987.10642312

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title = "Cation-ratio dating of quaternary materials in the east-central mojave desert, california",

abstract = "An excellent correlation is found between K+Ca:Ti ratios in rock varnishes and radiometric ages of K-Ar-dated basalt flows in the Cima volcanic field and accelerator-radiocarbon-dated varnishes from nearby sites in the east-central Mojave Desert of California. This calibration extends from about 1 million to about 100 years BP, allowing the chronometric dating of geomorphic and archaeologic surfaces in the eastcentral Mojave Desert. There are significant differences between this curve and the cation-leaching curve developed for the Coso Range, southestern California. Therefore, this curve cannot be used to determine the ages of rock varnishes in areas far beyond the east-central Mojave Desert.",

keywords = "California, Cima volcanic field, Geomorphology, Mojave Desert, Quaternary dating methods, Rock varnish",

author = "Dorn, {Ronald I.} and Donna Tanner and Turrin, {Brent D.} and Dohrenwend, {John C.}",

note = "Funding Information: Acknowledgments: This research was supported in part by NSF grant SES86-86-01937 to R. I. Dorn. Thanks to Denise Dorn for field assistance, J. Harden for discussions, D. J. Donahue, A. J. T. Jull, A. Long, and T. H. Zabel for accelerator radiocarbon analyses at the University of Arizona NSF Regional Facility for Radioisotope Analysis, and helpful comments by A. R. Orme, J. Bergquist, and J. Conrad. The writers divide responsibility as follows: Dorn and Tanner —varnish laboratory work; Turrin —K-Ar dating; Dorn and Dohrenwend —field collection. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.",

year = "1987",

doi = "10.1080/02723646.1987.10642312",

language = "English (US)",

volume = "8",

pages = "72--81",

journal = "Physical Geography",

issn = "0272-3646",

publisher = "Bellwether Publishing, Ltd.",

number = "1",

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AU - Dorn, Ronald I.

AU - Tanner, Donna

AU - Turrin, Brent D.

AU - Dohrenwend, John C.

N1 - Funding Information: Acknowledgments: This research was supported in part by NSF grant SES86-86-01937 to R. I. Dorn. Thanks to Denise Dorn for field assistance, J. Harden for discussions, D. J. Donahue, A. J. T. Jull, A. Long, and T. H. Zabel for accelerator radiocarbon analyses at the University of Arizona NSF Regional Facility for Radioisotope Analysis, and helpful comments by A. R. Orme, J. Bergquist, and J. Conrad. The writers divide responsibility as follows: Dorn and Tanner —varnish laboratory work; Turrin —K-Ar dating; Dorn and Dohrenwend —field collection. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.

PY - 1987

Y1 - 1987

N2 - An excellent correlation is found between K+Ca:Ti ratios in rock varnishes and radiometric ages of K-Ar-dated basalt flows in the Cima volcanic field and accelerator-radiocarbon-dated varnishes from nearby sites in the east-central Mojave Desert of California. This calibration extends from about 1 million to about 100 years BP, allowing the chronometric dating of geomorphic and archaeologic surfaces in the eastcentral Mojave Desert. There are significant differences between this curve and the cation-leaching curve developed for the Coso Range, southestern California. Therefore, this curve cannot be used to determine the ages of rock varnishes in areas far beyond the east-central Mojave Desert.

AB - An excellent correlation is found between K+Ca:Ti ratios in rock varnishes and radiometric ages of K-Ar-dated basalt flows in the Cima volcanic field and accelerator-radiocarbon-dated varnishes from nearby sites in the east-central Mojave Desert of California. This calibration extends from about 1 million to about 100 years BP, allowing the chronometric dating of geomorphic and archaeologic surfaces in the eastcentral Mojave Desert. There are significant differences between this curve and the cation-leaching curve developed for the Coso Range, southestern California. Therefore, this curve cannot be used to determine the ages of rock varnishes in areas far beyond the east-central Mojave Desert.

KW - California

KW - Cima volcanic field

KW - Geomorphology

KW - Mojave Desert

KW - Quaternary dating methods

KW - Rock varnish

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Cation-ratio dating of quaternary materials in the east-central mojave desert, california

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