Portal de Periódicos da CAPES

Age of crustal melting and leucogranite formation from U-Pb zircon and monazite dating in the western Himalaya, Zanskar, India

1995; Geological Society of America; Volume: 23; Issue: 12 Linguagem: Inglês

10.1130/0091-7613(1995)023 2.3.co;2

1943-2682

Stephen R. Noble, M. P. Searle,

Geology and Paleoclimatology Research

Research Article| December 01, 1995 Age of crustal melting and leucogranite formation from U-Pb zircon and monazite dating in the western Himalaya, Zanskar, India S. R. Noble; S. R. Noble 1Natural Environment Research Council Isotope Geosciences Laboratory, Kingsley-Dunham Centre, Keyworth, Nottingham, NG12 5GG, United Kingdom Search for other works by this author on: GSW Google Scholar M. P. Searle M. P. Searle 2Department of Earth Sciences, Oxford University, Parks Road, Oxford, OX1 3PR, United Kingdom Search for other works by this author on: GSW Google Scholar Author and Article Information S. R. Noble 1Natural Environment Research Council Isotope Geosciences Laboratory, Kingsley-Dunham Centre, Keyworth, Nottingham, NG12 5GG, United Kingdom M. P. Searle 2Department of Earth Sciences, Oxford University, Parks Road, Oxford, OX1 3PR, United Kingdom Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1995) 23 (12): 1135–1138. https://doi.org/10.1130/0091-7613(1995)023 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 Email Tools Icon Tools Get Permissions Search Site Citation S. R. Noble, M. P. Searle; Age of crustal melting and leucogranite formation from U-Pb zircon and monazite dating in the western Himalaya, Zanskar, India. Geology 1995;; 23 (12): 1135–1138. doi: https://doi.org/10.1130/0091-7613(1995)023 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 New U-Pb data from leucogranites in the High Himalayan slab in the western Himalaya of Zanskar reveal that crustal melting occurred at 21–19.5 Ma and that anatexis occurred along the Himalaya at least from Kashmir-Zanskar to eastern Nepal at (Approx.)24–19.5 Ma. High-U monazites from leucogranitic melt pods in migmatites within the 35-km-wide sillimanite + K-feldspar zone at the deepest structural levels exposed (Umasi-la) have U-Pb ages of 20.6–19.5 Ma. Higher-level migmatitic melt pods from Shafat in the Suru valley also contain magmatic monazites with U-Pb ages of 20.8 ± 0.3 Ma. Zircons from the leucogranites contain an (Approx.)460 Ma inherited component, as do some Umasi-la monazites, showing that the protoliths were at least Ordovician in age. 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.