Journal
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
Volume 18, Issue 11, Pages 4229-4234Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1002/2017GC007217
Keywords
Tibet; igneous; isotopic; geochemical; geochronologic; Himalaya
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Funding
- National Science Foundation [EAR-1008527]
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A database containing previously published geochronologic, geochemical, and isotopic data on Mesozoic to Quaternary igneous rocks in the Himalayan-Tibetan orogenic system are presented. The database is intended to serve as a repository for new and existing igneous rock data and is publicly accessible through a web-based platform that includes an interactive map and data table interface with search, filtering, and download options. To illustrate the utility of the database, the age, location, and Hf-t composition of magmatism from the central Gangdese batholith in the southern Lhasa terrane are compared. The data identify three high-flux events, which peak at 93, 50, and 15 Ma. They are characterized by inboard arc migration and a temporal and spatial shift to more evolved isotopic compositions. Plain Language Summary A new database with a web-based interface is presented that contains compiled geochronologic, geochemical, and isotopic data on igneous rocks in the Himalaya-Tibetan orogen.
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