Fundamental Scientific Library of NAS RA

40Ar/39Ar and K-Ar geochronology and tectonic significance of the Upper Cretaceous Adel Mountain volcanics and spatially associated Tertiary igneous rocks, northwestern Montana /

40Ar/39Ar and K-Ar geochronology and tectonic significance of the Upper Cretaceous Adel Mountain volcanics and spatially associated Tertiary igneous rocks, northwestern Montana / By Stephen S. Harlan ... [et al.]. - Reston, Va. : Denver, CO : U.S. Geological Survey ; U.S. Geological Survey, Information Services [distributor], 2005. - iv, 29 p. : col. ill., maps (some col.) ; 28 cm. - Professional paper ; 1696 . - U.S. Geological Survey professional paper ; 1696. .

Includes bibliogr.l references (p. 18-19).


Geochronometry--Montana--Craig Region.
Rocks, Igneous--Montana--Craig Region.
Geology, Stratigraphic--Cretaceous.
Geology, Stratigraphic--Tertiary.
Radioactive dating--Montana--Craig Region.

551.7/709786


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