DOI: 10.1016/j.quascirev.2012.10.036
Scopus记录号: 2-s2.0-84870835455
论文题名: Magnetic paleointensity stratigraphy and high-resolution Quaternary geochronology: Successes and future challenges
作者: Roberts A.P. ; Tauxe L. ; Heslop D.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 61 起始页码: 1
结束页码: 16
语种: 英语
英文关键词: Depositional remanent magnetization
; Geochronology
; Geomagnetic field
; Paleointensity
; Post-depositional remanent magnetization
; Quaternary
Scopus关键词: Geomagnetic fields
; Paleointensity
; Post-depositional remanent magnetizations
; Quaternary
; Remanent magnetization
; Geochronology
; Geomagnetism
; Remanence
; Sediments
; Stratigraphy
; Sedimentology
; geochronology
; geomagnetic field
; ice core
; magnetization
; paleomagnetism
; Quaternary
; sedimentation
; stratigraphy
; theoretical study
英文摘要: Magnetic paleointensity stratigraphy is used to detect variations in the strength of Earth's ancient magnetic field. Paleointensity studies have demonstrated that a dominantly dipolar geomagnetic signal can be recorded in a globally coherent manner in different types of sediments and in non-sedimentary archives, including ice core records and marine magnetic anomaly profiles. The dominantly dipolar nature of geomagnetic paleointensity variations provides a global geophysical signal that has come to be widely used to date Quaternary sediments. Despite the many successful applications of paleointensity-assisted chronology, the mechanisms by which sediments become magnetized remain poorly understood and there is no satisfactory theoretical foundation for paleointensity estimation. In this paper, we outline past successes of sedimentary paleointensity analysis as well as remaining challenges that need to be addressed to place such work on a more secure theoretical and empirical foundation. We illustrate how common concepts for explaining sedimentary remanence acquisition can give rise to centennial to millennial offsets between paleomagnetic and other signals, which is a key limitation for using paleointensity signals for geochronology. Our approach is intended to help non-specialists to better understand the legitimate uses and limitations of paleointensity stratigraphy, while pointing to outstanding problems that require concerted specialist efforts to resolve. © 2012 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60732
Appears in Collections: 过去全球变化的重建
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作者单位: Research School of Earth Sciences, The Australian National University, 61 Mills Road, Canberra, ACT 0200, Australia; Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, United States
Recommended Citation:
Roberts A.P.,Tauxe L.,Heslop D.. Magnetic paleointensity stratigraphy and high-resolution Quaternary geochronology: Successes and future challenges[J]. Quaternary Science Reviews,2013-01-01,61