气候变化领域集成服务门户(CCPortal): Nanogoethite as a Potential Indicator of Remagnetization in Red Beds

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DOI	10.1029/2019GL084715
	Nanogoethite as a Potential Indicator of Remagnetization in Red Beds
	Huang, Wentao; Jackson, Michael J.; Dekkers, Mark J.; Solheid, Peat; Zhang, Bo; Guo, Zhaojie; Ding, Lin
通讯作者	Huang, WT (通讯作者)
发表日期	2019
ISSN	0094-8276
EISSN	1944-8007
起始页码	12841
结束页码	12850
卷号	46 期号:22
英文摘要	Red beds are well-known for recording stable natural remanent magnetization (NRM). However, discriminating primary NRM from secondary remanence in red beds is difficult. The Paleogene Nangqian red beds in eastern Tibetan Plateau variably record an overprint related to nearby magmatism and thus provide a great opportunity to characterize remagnetization in red beds. Through comprehensive rock magnetic, Mossbauer spectroscopic, and petrographic analyses, we find that remagnetization was controlled by temperature. Remagnetized red beds contain abundant authigenic hematite and goethite, with some larger grains unblocking at the Neel temperatures and the remainder (nanoparticles) unblocking at lower temperatures. In contrast, red beds retaining primary NRM are characterized by dominance of detrital hematite and magnetite, presence of fine-grained authigenic hematite, and absence of authigenic goethite and magnetite. High temperature behaviors of NRM/susceptibility are indicative of remagnetization, but the presence of goethite appears to be a more sensitive criterion for diagnosing remagnetization in red beds.
关键词	PALEOMAGNETIC CONSTRAINTS MOSSBAUER-SPECTROSCOPY TIBETAN PLATEAU CARBONATE ROCKS SOUTH CHINA INDO-CHINA GOETHITE HEMATITE TRANSFORMATION DEFORMATION
英文关键词	red beds; remagnetization; hematite; magnetite; goethite
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000497263300001
来源期刊	GEOPHYSICAL RESEARCH LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259621
推荐引用方式 GB/T 7714	Huang, Wentao,Jackson, Michael J.,Dekkers, Mark J.,et al. Nanogoethite as a Potential Indicator of Remagnetization in Red Beds[J]. 中国科学院青藏高原研究所,2019,46(22).
APA	Huang, Wentao.,Jackson, Michael J..,Dekkers, Mark J..,Solheid, Peat.,Zhang, Bo.,...&Ding, Lin.(2019).Nanogoethite as a Potential Indicator of Remagnetization in Red Beds.GEOPHYSICAL RESEARCH LETTERS,46(22).
MLA	Huang, Wentao,et al."Nanogoethite as a Potential Indicator of Remagnetization in Red Beds".GEOPHYSICAL RESEARCH LETTERS 46.22(2019).