Rock magnetism of the offshore soils of Lake Qinghai in the western China
Lake Qinghai is the largest lake in China and situated in an important climate-sensitive zone on the northeastern margin of the Tibetan Plateau, making it an ideal place to study the environmental evolution of the northwest China as well as the interplay between the Asian monsoon and the westerlies...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2016-05-01
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| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/feart.2016.00062/full |
| _version_ | 1818648286393794560 |
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| author | Peng eZhang Shan eLin Shan eLin Hong eAo Lijuan eWang Xiaoyan eSun Xiaoyan eSun Zhisheng eAn |
| author_facet | Peng eZhang Shan eLin Shan eLin Hong eAo Lijuan eWang Xiaoyan eSun Xiaoyan eSun Zhisheng eAn |
| author_sort | Peng eZhang |
| collection | DOAJ |
| description | Lake Qinghai is the largest lake in China and situated in an important climate-sensitive zone on the northeastern margin of the Tibetan Plateau, making it an ideal place to study the environmental evolution of the northwest China as well as the interplay between the Asian monsoon and the westerlies in late Quaternary. In this study, detailed rock magnetic measurements were carried out on the offshore soils of Lake Qinghai. The dry grassland samples have higher magnetic susceptibility than that of the wet grassland samples, which suggests a higher concentration of magnetic minerals in the dry grassland and lower concentration of magnetic minerals in the wet grassland near the lake edge. The high concentration of the superparamagnetic (SP) magnetic minerals related to pedogenesis may also contribute to the high magnetic susceptibility of the dry grassland. The low magnetic susceptibility of the wet grassland may result from the conversion of strongly to weakly magnetic minerals and/or the dissolution of magnetic minerals. In addition, the Hm/(Gt+Hm) value has a positive correlation with the water content, thus can be taken as an effective proxy for the soil moisture. |
| first_indexed | 2024-12-17T01:16:01Z |
| format | Article |
| id | doaj.art-f44e5537d90f42208eae98b65c738df4 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-12-17T01:16:01Z |
| publishDate | 2016-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-f44e5537d90f42208eae98b65c738df42022-12-21T22:08:59ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632016-05-01410.3389/feart.2016.00062183931Rock magnetism of the offshore soils of Lake Qinghai in the western ChinaPeng eZhang0Shan eLin1Shan eLin2Hong eAo3Lijuan eWang4Xiaoyan eSun5Xiaoyan eSun6Zhisheng eAn7State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of SciencesState Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of SciencesUniversity of Chinese Academy of SciencesState Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of SciencesState Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of SciencesState Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of SciencesCollege of life Sciences, Shanxi Normal UniversityState Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of SciencesLake Qinghai is the largest lake in China and situated in an important climate-sensitive zone on the northeastern margin of the Tibetan Plateau, making it an ideal place to study the environmental evolution of the northwest China as well as the interplay between the Asian monsoon and the westerlies in late Quaternary. In this study, detailed rock magnetic measurements were carried out on the offshore soils of Lake Qinghai. The dry grassland samples have higher magnetic susceptibility than that of the wet grassland samples, which suggests a higher concentration of magnetic minerals in the dry grassland and lower concentration of magnetic minerals in the wet grassland near the lake edge. The high concentration of the superparamagnetic (SP) magnetic minerals related to pedogenesis may also contribute to the high magnetic susceptibility of the dry grassland. The low magnetic susceptibility of the wet grassland may result from the conversion of strongly to weakly magnetic minerals and/or the dissolution of magnetic minerals. In addition, the Hm/(Gt+Hm) value has a positive correlation with the water content, thus can be taken as an effective proxy for the soil moisture.http://journal.frontiersin.org/Journal/10.3389/feart.2016.00062/fullHematiterock magnetismpedogenesisGoethiteLake Qinghai |
| spellingShingle | Peng eZhang Shan eLin Shan eLin Hong eAo Lijuan eWang Xiaoyan eSun Xiaoyan eSun Zhisheng eAn Rock magnetism of the offshore soils of Lake Qinghai in the western China Frontiers in Earth Science Hematite rock magnetism pedogenesis Goethite Lake Qinghai |
| title | Rock magnetism of the offshore soils of Lake Qinghai in the western China |
| title_full | Rock magnetism of the offshore soils of Lake Qinghai in the western China |
| title_fullStr | Rock magnetism of the offshore soils of Lake Qinghai in the western China |
| title_full_unstemmed | Rock magnetism of the offshore soils of Lake Qinghai in the western China |
| title_short | Rock magnetism of the offshore soils of Lake Qinghai in the western China |
| title_sort | rock magnetism of the offshore soils of lake qinghai in the western china |
| topic | Hematite rock magnetism pedogenesis Goethite Lake Qinghai |
| url | http://journal.frontiersin.org/Journal/10.3389/feart.2016.00062/full |
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