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Outcrop Geology of Plio-Pleistocene Strata of the Confidence Hills, Southern Death Valley, California

Gomez, F. and Hsieh, J. and Holt, J. and Murray, B. and Kirschvink, J. (1992) Outcrop Geology of Plio-Pleistocene Strata of the Confidence Hills, Southern Death Valley, California. In: The Confidence Hills, Southern Death Valley, California : depositional environments, magnetostratigraphy, and Plio-Pleistocene strata. Quarterly (San Bernardino County Museum Association). Vol.39. No.2. San Bernardino County Museum Association , Redlands, CA, pp. 3-6.

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The Confidence Hills, Southern Death Valley, California, are composed of Plio-Pleistocene lacustrine beds, evaporite beds, ashes, playa sediments, alluvial fan and fluvial deposits. The sediments have been divided into 5 mappable units. From oldest to youngest, they are: the Confidence Hills "formation· (informal) composed of three interfingering members, and overlying Units A and B which do not exhibit transitional contacts with either underlying units or with themselves. The Confidence Hills formation includes the lacustrine and playa fine sands, and silts and clays of fluvial sediments. The lower two members are characterized by the presence of anhydrite. This formation also contains at least 15 volcanic ashes useful for determining age and correlation. Unit B is a red-to-brown coarse fanglomerate that lies disconformably above the Confidence Hills formation. Unit A, a second fanglomerate deposit, overlies the other units in a prominent angular unconformity. The southernmost canyon was studied in greater detail, both lithostratigraphically and magnetostratigraphically (Beratan and Murray, and Pluhar et al., this volume). There are two primary structural features in the Confidence Hills: the Southern Death Valley fault zone and a large anticlinorium which makes up the Confidence Hills.

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Kirschvink, J.0000-0001-9486-6689
Additional Information:© 1992 San Bernardino County Museum Association. The authors would like to thank George Jefferson for his very useful review of this paper. This study is supported partially by NSF grant EAR-9019289.
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Series Name:Quarterly (San Bernardino County Museum Association)
Issue or Number:2
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Official Citation:Gomez, F., Hsieh, J., Holt, J., Murray, B., and J.L. Kirschvink, 1992. Outcrop geology of Plio-pleistocene strata of the confidence hills, southen Death Valley, California. San Bernardino County Museum Association Quaterly v. 39(2), p. 3-6.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:36436
Deposited By: Tony Diaz
Deposited On:15 Apr 2013 18:32
Last Modified:17 Nov 2022 22:19

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