Open AccessZircon and apatite fission-track dating of the Ampipal alkaline massif, the Nepal Lesser Himalaya
Author(s) -
Pitambar Gautam,
Satoshi Koshimizu
Publication year - 1991
Publication title -
journal of nepal geological society
Language(s) - English
Resource type - Journals
ISSN - 2676-1378
DOI - 10.3126/jngs.v7i0.32571
Subject(s) - zircon , massif , fission track dating , geology , geochemistry , apatite , mineralogy
Fission-track dates for the rocks of the Ampipal alkaline massif range from 2.60 0.19 Ma to 2.81 0.26 Ma for zircon and 1.58 0.17 Ma to 1.69 0.21 Ma for apatite respectively. These dates suggest uplift/erosion rates ranging from 2.00 to 2.22 mm/yr and the corresponding cooling rates of 80 to 89°C/Myr for the period between ca. 2.81 Ma and the present.