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Your search keyword '"GEOCHRONOMETRY"' showing total 2 results
2 results on '"GEOCHRONOMETRY"'

1. Integrated ammonite biochronology and U-Pb geochronometry from a basal Jurassic section in Alaska.

Author

Palfy, Jozsef and Smith, Paul L.

Subjects
*JURASSIC stratigraphic geology, *AMMONOIDEA, *GEOCHRONOMETRY
Abstract

Investigates the basal Jurassic section at Puale Bay, Alaska using biochronologic and geochronometric data. Improvement in the calibration of early Jurassic time scale; Documentation of early Jurassic ammonoid succession; Reconsideration of the status of the bay as a Triassic-Jurassic boundary section.

Published
1999
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2. 40Ar/39Ar dating of detrital grains constrains the provenance and stratigraphy of the Gravina...

Author

Cohen, Harvey A. and Hall, Chris M.

Subjects
SEDIMENTS, GEOCHRONOMETRY
Abstract

Presents 40Ar/39Ar laser microprobe dates on detrital mineral grains extracted from sandstones of the Gravina belt, southeastern Alaska. Reconstruction of the geochronological characteristics of the Gravina belt source area; Age constraints for Gravina belt stratigraphy and regional tectonics; Multiple grain dating of primary volcaniclastic detritus.

Published
1995
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