Extremely acid Permian lakes and ground waters in North America

Evaporites hosted by red beds (red shales and sandstones), some 275–265 million years old, extend over a large area of the North American mid-continent 1 . They were deposited in non-marine saline lakes, pans and mud-flats 2 , settings that are typically assumed to have been alkaline. Here we use la...

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Bibliographic Details
Published in:Nature (London) 1998-04, Vol.392 (6679), p.911-914
Main Authors: Benison, Kathleen Counter, Goldstein, Robert H., Wopenka, Brigitte, Burruss, Robert C., Pasteris, Jill Dill
Format: Article
Language:English
Subjects:
Acids
Earth sciences
Earth, ocean, space
Exact sciences and technology
Freshwater
Geology
Groundwater
Humanities and Social Sciences
Lakes
letter
Mud flats
multidisciplinary
Permian
Salt lakes
Science
Science (multidisciplinary)
Stratigraphy
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Summary:Evaporites hosted by red beds (red shales and sandstones), some 275–265 million years old, extend over a large area of the North American mid-continent 1 . They were deposited in non-marine saline lakes, pans and mud-flats 2 , settings that are typically assumed to have been alkaline. Here we use laser Raman microprobe analyses of fluid inclusions trapped in halites from these Permian deposits to argue for the existence of highly acidic (pH
ISSN:0028-0836
1476-4687
DOI:10.1038/31917