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Laser (super 40) Ar/ (super 39) Ar dating of single detrital muscovite grains from early foreland-basin sedimentary deposits in India; implications for early Himalayan evolution
Y. M. R. Najman, M. S. Pringle, M. R. W. Johnson, A. H. F. Robertson and J. R. Wijbrans
Laser (super 40) Ar/ (super 39) Ar dating of single detrital muscovite grains from early foreland-basin sedimentary deposits in India; implications for early Himalayan evolution
Geology (Boulder) (June 1997) 25 (6): 535-538
Laser (super 40) Ar/ (super 39) Ar dating of single detrital muscovite grains from early foreland-basin sedimentary deposits in India; implications for early Himalayan evolution
Geology (Boulder) (June 1997) 25 (6): 535-538
Index Terms/Descriptors
Latitude & Longitude
Abstract
In India, the Dagshai and overlying Kasauli Formations represent the oldest exposed continental foredeep sediments eroded from the Himalayan orogen. (super 40) Ar/ (super 39) Ar dating of individual detrital white micas from these sedimentary units has provided maximum depositional ages of <28 Ma for the Dagshai Formation at one locality and <25 Ma at a second locality, whereas deposition of the Kasauli Formation occurred after 28 Ma at two localities and after 22 Ma at a third locality. This timing suggests that, in India, the start of substantial exhumation and erosion from the rising Himalayan orogen was delayed until 28 Ma.
ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 25
Serial Issue: 6
Title: Laser (super 40) Ar/ (super 39) Ar dating of single detrital muscovite grains from early foreland-basin sedimentary deposits in India; implications for early Himalayan evolution
Affiliation: Edinburgh University, Department of Geology and Geophysics,
Edinburgh,
United Kingdom
Pages: 535-538
Published: 199706
Text Language: English
Publisher: Geological Society of America (GSA),
Boulder, CO,
United States
References: 34
Accession Number: 1997-040991
Categories: Geochronology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch map
N30°00'00" - N31°30'00", E77°00'00" - E78°00'00"
Secondary Affiliation: Scottish Universities Research and Reactor Centre,
GBR,
United KingdomVrije Universiteit,
NLD,
Netherlands
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 199715
