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פותח על ידי קלירמאש פתרונות בע"מ -
Time dependence of magnetic susceptibility of soil chronosequences on the California coast
Year:
1992
Source of publication :
Quaternary Research
Authors :
פיין, פנחס
;
.
Volume :
37
Co-Authors:
Singer, M.J., Department of Land, Air, and Water Resources, University of California, Davis, CA 95616, United States
Fine, P., Department of Geology, University of California, Davis, CA 95616, United States
Verosub, K.L., Institute of Soils and Water, Volcani Center, P.O. Box 6, Bet Dagan, Israel
Chadwick, O.A., Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, United States
Facilitators :
From page:
323
To page:
332
(
Total pages:
10
)
Abstract:
As the age of the soils in a chronosequence on the California coast increases, the difference between the magnetic susceptibility of eluvial and illuvial horizons increases, and the residual susceptibility after extraction with citrate-bicarbonate-dithionite (CBD) decreases. Enhanced susceptibility results from the conversion of nonferrimagnetic minerals to secondary ferrimagnetic forms (most likely maghemite) and the preferential accumulation of inherited and pedogenic magnetic minerals. Little enhancement occurs for pedons younger than 40,000 yr. By 124,000 yr, most of the magnetic susceptibility can be attributed to forms soluble in CBD. Magnetic susceptibility appears to vary systematically over time for three chronosequences from areas with mean annual precipitation ranging from 650 to 1500 mm yr-1. Magnetic susceptibility enhancement may be a useful parameter for estimating soil age in certain climates. © 1992.
Note:
Related Files :
age determination
magnetic susceptibility enhancement
soil
soil chronosequence
Time dependence
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/0033-5894(92)90070-Y
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25414
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:14
Scientific Publication
Time dependence of magnetic susceptibility of soil chronosequences on the California coast
37
Singer, M.J., Department of Land, Air, and Water Resources, University of California, Davis, CA 95616, United States
Fine, P., Department of Geology, University of California, Davis, CA 95616, United States
Verosub, K.L., Institute of Soils and Water, Volcani Center, P.O. Box 6, Bet Dagan, Israel
Chadwick, O.A., Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, United States
Time dependence of magnetic susceptibility of soil chronosequences on the California coast
As the age of the soils in a chronosequence on the California coast increases, the difference between the magnetic susceptibility of eluvial and illuvial horizons increases, and the residual susceptibility after extraction with citrate-bicarbonate-dithionite (CBD) decreases. Enhanced susceptibility results from the conversion of nonferrimagnetic minerals to secondary ferrimagnetic forms (most likely maghemite) and the preferential accumulation of inherited and pedogenic magnetic minerals. Little enhancement occurs for pedons younger than 40,000 yr. By 124,000 yr, most of the magnetic susceptibility can be attributed to forms soluble in CBD. Magnetic susceptibility appears to vary systematically over time for three chronosequences from areas with mean annual precipitation ranging from 650 to 1500 mm yr-1. Magnetic susceptibility enhancement may be a useful parameter for estimating soil age in certain climates. © 1992.
Scientific Publication
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