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Mineral magnetic record of the Chinese loess and paleosols.

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Mineral magnetic record of the Chinese loess and paleosols. / Maher, Barbara A; Thompson, Roy.
In: Geology, Vol. 19, No. 1, 01.1991, p. 3-6.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Maher BA, Thompson R. Mineral magnetic record of the Chinese loess and paleosols. Geology. 1991 Jan;19(1):3-6. doi: 10.1130/0091-7613(1991)019<0003:MMROTC>2.3.CO;2

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Maher, Barbara A ; Thompson, Roy. / Mineral magnetic record of the Chinese loess and paleosols. In: Geology. 1991 ; Vol. 19, No. 1. pp. 3-6.

Bibtex

@article{58de641efadf4e6a84b5c5fc07af7755,
title = "Mineral magnetic record of the Chinese loess and paleosols.",
abstract = "Variations in the magnetic susceptiblity of the Chinese loess and its interbedded paleosols correlate strikingly well with the deep-sea oxygen isotope record. Low susceptibility values are found for the loess layers, and high values are found for the soil horizons. Two interpretative models have been advanced to account for these magnetic variations. Both of these models discount any significant in situ formation of magnetite during soil-forming periods. Instead they infer relative concentration of detrital or atmospheric magnetite at these times. We critically examine the assumptions made in these models and, on the basis of some new mineral magnetic data and fromalized magnetic flux calculations, offer an alternative explanation of the loess magnetic record. Our model identifies pedogenic formation of magnetite as the major contributor to the high magnetic susceptibility of the paleosols. The formation and preservation of this pedogenic magnetite is dependent on soil-froming conditions and hence reflects the regional climate.",
keywords = "Chinese loess, loess magnetism, environmental magnetism, magnetic susceptibility, climate change, soil magnetite",
author = "Maher, {Barbara A} and Roy Thompson",
year = "1991",
month = jan,
doi = "10.1130/0091-7613(1991)019<0003:MMROTC>2.3.CO;2",
language = "English",
volume = "19",
pages = "3--6",
journal = "Geology",
issn = "1943-2682",
publisher = "Geological Society of America",
number = "1",

}

RIS

TY - JOUR

T1 - Mineral magnetic record of the Chinese loess and paleosols.

AU - Maher, Barbara A

AU - Thompson, Roy

PY - 1991/1

Y1 - 1991/1

N2 - Variations in the magnetic susceptiblity of the Chinese loess and its interbedded paleosols correlate strikingly well with the deep-sea oxygen isotope record. Low susceptibility values are found for the loess layers, and high values are found for the soil horizons. Two interpretative models have been advanced to account for these magnetic variations. Both of these models discount any significant in situ formation of magnetite during soil-forming periods. Instead they infer relative concentration of detrital or atmospheric magnetite at these times. We critically examine the assumptions made in these models and, on the basis of some new mineral magnetic data and fromalized magnetic flux calculations, offer an alternative explanation of the loess magnetic record. Our model identifies pedogenic formation of magnetite as the major contributor to the high magnetic susceptibility of the paleosols. The formation and preservation of this pedogenic magnetite is dependent on soil-froming conditions and hence reflects the regional climate.

AB - Variations in the magnetic susceptiblity of the Chinese loess and its interbedded paleosols correlate strikingly well with the deep-sea oxygen isotope record. Low susceptibility values are found for the loess layers, and high values are found for the soil horizons. Two interpretative models have been advanced to account for these magnetic variations. Both of these models discount any significant in situ formation of magnetite during soil-forming periods. Instead they infer relative concentration of detrital or atmospheric magnetite at these times. We critically examine the assumptions made in these models and, on the basis of some new mineral magnetic data and fromalized magnetic flux calculations, offer an alternative explanation of the loess magnetic record. Our model identifies pedogenic formation of magnetite as the major contributor to the high magnetic susceptibility of the paleosols. The formation and preservation of this pedogenic magnetite is dependent on soil-froming conditions and hence reflects the regional climate.

KW - Chinese loess

KW - loess magnetism

KW - environmental magnetism

KW - magnetic susceptibility

KW - climate change

KW - soil magnetite

U2 - 10.1130/0091-7613(1991)019<0003:MMROTC>2.3.CO;2

DO - 10.1130/0091-7613(1991)019<0003:MMROTC>2.3.CO;2

M3 - Journal article

VL - 19

SP - 3

EP - 6

JO - Geology

JF - Geology

SN - 1943-2682

IS - 1

ER -