Tibetan satellite magnetic low: Evidence for widespread melt in the Tibetan crust?

Research Article| October 01, 1999 Tibetan satellite magnetic low: Evidence for widespread melt in the Tibetan crust? Doug Alsdorf; Doug Alsdorf 1Institute for Computational Earth System Science, University of California, Santa Barbara, California 93106, USA Search for other works by this author on: GSW Google Scholar Doug Nelson Doug Nelson 2Department of Earth Sciences, Syracuse University, Syracuse, New York 13244, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Doug Alsdorf 1Institute for Computational Earth System Science, University of California, Santa Barbara, California 93106, USA Doug Nelson 2Department of Earth Sciences, Syracuse University, Syracuse, New York 13244, USA Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1999) 27 (10): 943–946. https://doi.org/10.1130/0091-7613(1999)027<0943:TSMLEF>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Doug Alsdorf, Doug Nelson; Tibetan satellite magnetic low: Evidence for widespread melt in the Tibetan crust?. Geology 1999;; 27 (10): 943–946. doi: https://doi.org/10.1130/0091-7613(1999)027<0943:TSMLEF>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Tibetan plateau is associated with a pronounced satellite magnetic low. Forward modeling of this anomaly demonstrates that the crust underlying the Tibetan plateau is weakly magnetic compared to the crust on either side, and that the boundaries of the weakly magnetic region coincide closely with the topographic edges of the plateau (Himalaya, Kun Lun). Because there are no obvious changes in the bulk magnetization of the crust associated with the principal terrane boundaries within the plateau (Banggong and Yarlung-Zangbo sutures), the low likely manifests hot crust beneath Tibet. Forward modeling of the magnetic anomaly with simple assumptions suggests that the Curie isotherm is likely to reside in the upper crust across the Tibetan plateau (∼15 km depth), implying that granite minimum melt temperature (∼600–650 °C) is also achieved in the upper crust across the plateau (∼16–18 km depth). This inference is consistent with the shallow depth extent of earthquakes in Tibet, and with the recent suggestion that melt may be areally widespread within the Tibetan crust. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.