Geochemical and Clay-Size Minerals Evidence for the Provenance of LQC Loess Deposits in the Central Shandong, Northern China

DOI

10.2991/jrarc.2018.8.1.3How to use a DOI?

Keywords

Loess Provenance, LQC Loess, Yellow River Sediments, Chinese Loess Plateau, Geochemistry, Clay-size minerals

Abstract

The identification of the Shandong loess provenance adjacent to the floodplain of the Yellow River external the Loess Plateau is very important for revealing the path of dust accumulation and paleoenvironment, which has aroused widespread concern. In this study, the clay-size(< 5•m) minerals and major elements composition of bulk samples and of two grain-size fractions (< 20•m and 20~63•m) were analyzed in order to determine the provenance of the LongQiaoCun(LQC) loess in the Central Shandong based on comparisons with loess from the Chinese Loess Plateau and with Yellow River sediments. Statistical analysis of the sedimentary clay-size minerals reveals that LQC loess deposits in the Central Shandong adjacent to the floodplain of the Yellow River were not blown directly from the northern deserts as is the case of loess deposits in the Chinese Loess Plateau. and the Yellow River sediments may be related to erosion from the Loess Plateau. The difference in relatively immobile major element ratios of TiO2 /Al 2O3 and K 2O/Al 2O3 of the < 20•m and 20 ~ 63•m fractions affirm that sediments exposed during glacial periods in the North China fluvial plain, including the floodplain of Yellow River, were the major dust source as the statistical analysis of the sedimentary clay-size minerals has concluded.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - JOUR
AU  - Min Ding
AU  - Junxiang Zhang
AU  - Shuzhen Peng
AU  - Wei Zhang
AU  - Qiuyue Zhao
AU  - Longjiang Mao
PY  - 2018
DA  - 2018/03/31
TI  - Geochemical and Clay-Size Minerals Evidence for the Provenance of LQC Loess Deposits in the Central Shandong, Northern China
JO  - Journal of Risk Analysis and Crisis Response
SP  - 24
EP  - 34
VL  - 8
IS  - 1
SN  - 2210-8505
UR  - https://doi.org/10.2991/jrarc.2018.8.1.3
DO  - 10.2991/jrarc.2018.8.1.3
ID  - Ding2018
ER  -