The magnetic properties of particle-sized samples from the Luo Chuan loess section: evidence for pedogenesis

Hongbo Zheng; Frank Oldfield; Lizhong Yu; John Shaw; Zhisheng An

doi:10.1016/0031-9201(91)90044-I

The magnetic properties of particle-sized samples from the Luo Chuan loess section: evidence for pedogenesis

Hongbo Zheng
, Frank Oldfield
, Lizhong Yu
, John Shaw
, Zhisheng An

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

97 Scopus citations

Abstract

Measurements of magnetic susceptibility and of laboratory remanences have been carried out on particle size fractions of loess and palaeosol samples from Luo Chuan, China. They show that the sub-micron clay fraction of the palaeosol is greatly enriched in fine-grained (< 0.03 μm) ferrimagnetic minerals and thus confirm the importance of secondary pedogenic components in the magnetic record from the section. The assemblages of magnetic minerals in both the loess and the palaeosol are interpreted as strongly bimodal with inferred detrital and pedogenic contributions to both. Climatically modulated magnetic variations between palaeosols and intervening loess layers arise from fluctuations in the absolute and relative importance of these two components. Of the two, the pedogenic component appears to exercise the stronger control on susceptibility variations in these Luochuan samples.

Original language	English
Pages (from-to)	250-258
Number of pages	9
Journal	Physics of the Earth and Planetary Interiors
Volume	68
Issue number	3-4
DOIs	https://doi.org/10.1016/0031-9201(91)90044-I
State	Published - Sep 1991
Externally published	Yes

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title = "The magnetic properties of particle-sized samples from the Luo Chuan loess section: evidence for pedogenesis",

abstract = "Measurements of magnetic susceptibility and of laboratory remanences have been carried out on particle size fractions of loess and palaeosol samples from Luo Chuan, China. They show that the sub-micron clay fraction of the palaeosol is greatly enriched in fine-grained (< 0.03 μm) ferrimagnetic minerals and thus confirm the importance of secondary pedogenic components in the magnetic record from the section. The assemblages of magnetic minerals in both the loess and the palaeosol are interpreted as strongly bimodal with inferred detrital and pedogenic contributions to both. Climatically modulated magnetic variations between palaeosols and intervening loess layers arise from fluctuations in the absolute and relative importance of these two components. Of the two, the pedogenic component appears to exercise the stronger control on susceptibility variations in these Luochuan samples.",

author = "Hongbo Zheng and Frank Oldfield and Lizhong Yu and John Shaw and Zhisheng An",

year = "1991",

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volume = "68",

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TY - JOUR

T1 - The magnetic properties of particle-sized samples from the Luo Chuan loess section

T2 - evidence for pedogenesis

AU - Zheng, Hongbo

AU - Oldfield, Frank

AU - Yu, Lizhong

AU - Shaw, John

AU - An, Zhisheng

PY - 1991/9

Y1 - 1991/9

N2 - Measurements of magnetic susceptibility and of laboratory remanences have been carried out on particle size fractions of loess and palaeosol samples from Luo Chuan, China. They show that the sub-micron clay fraction of the palaeosol is greatly enriched in fine-grained (< 0.03 μm) ferrimagnetic minerals and thus confirm the importance of secondary pedogenic components in the magnetic record from the section. The assemblages of magnetic minerals in both the loess and the palaeosol are interpreted as strongly bimodal with inferred detrital and pedogenic contributions to both. Climatically modulated magnetic variations between palaeosols and intervening loess layers arise from fluctuations in the absolute and relative importance of these two components. Of the two, the pedogenic component appears to exercise the stronger control on susceptibility variations in these Luochuan samples.

AB - Measurements of magnetic susceptibility and of laboratory remanences have been carried out on particle size fractions of loess and palaeosol samples from Luo Chuan, China. They show that the sub-micron clay fraction of the palaeosol is greatly enriched in fine-grained (< 0.03 μm) ferrimagnetic minerals and thus confirm the importance of secondary pedogenic components in the magnetic record from the section. The assemblages of magnetic minerals in both the loess and the palaeosol are interpreted as strongly bimodal with inferred detrital and pedogenic contributions to both. Climatically modulated magnetic variations between palaeosols and intervening loess layers arise from fluctuations in the absolute and relative importance of these two components. Of the two, the pedogenic component appears to exercise the stronger control on susceptibility variations in these Luochuan samples.

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U2 - 10.1016/0031-9201(91)90044-I

DO - 10.1016/0031-9201(91)90044-I

M3 - 文章

AN - SCOPUS:0026283679

SN - 0031-9201

VL - 68

SP - 250

EP - 258

JO - Physics of the Earth and Planetary Interiors

JF - Physics of the Earth and Planetary Interiors

IS - 3-4

ER -

The magnetic properties of particle-sized samples from the Luo Chuan loess section: evidence for pedogenesis

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