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GEOREF RECORD

An early India-Asia contact; paleomagnetic constraints from Ninetyeast Ridge, ODP Leg 121; with Suppl. Data 92-15

Chris T. Klootwijk, Jeffrey S. Gee, John W. Peirce, Guy M. Smith and Phil L. McFadden
An early India-Asia contact; paleomagnetic constraints from Ninetyeast Ridge, ODP Leg 121; with Suppl. Data 92-15
Geology (Boulder) (May 1992) 20 (5): 395-398

Abstract

New paleomagnetic results from sedimentary rock and basement of the Ninetyeast Ridge (Ocean Drilling Program Leg 121, Sites 756-758) detail the northward movement of the Indian plate for the past 80 m.y. Analysis of the combined paleolatitude-age profile indicates a distinct reduction in India's northward movement rate at 55+ Ma, interpreted as completion of suturing of Greater India and Asia. India's northward motion slowed from 18-19.5 cm/yr to 4.5 cm/yr for the location of Site 758. Comparison of this profile with paleomagnetic data from the wider Himalayan region indicates that initial contact between northwestern Greater India and southern Asia was already established by Cretaceous-Tertiary time. This supports a possible causal link between the India-Asia convergence and the Deccan Traps extrusion.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 20
Serial Issue: 5
Title: An early India-Asia contact; paleomagnetic constraints from Ninetyeast Ridge, ODP Leg 121; with Suppl. Data 92-15
Affiliation: Bur. Miner. Resour., Canberra, Australia
Pages: 395-398
Published: 199205
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 30
Accession Number: 1992-017352
Categories: Solid-earth geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch map
S27°21'18" - S27°21'18", E87°35'48" - E87°35'48"
S05°23'04" - S05°23'02", E90°21'36" - E90°21'42"
S17°01'30" - S17°01'25", E88°10'50" - E88°10'60"
Secondary Affiliation: Scripps Inst. Oceanogr., USA, United StatesGeophys. Explor. and Dev. Co., Calgary, AB, CAN, CanadaSt. Louis Univ., USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1992
Program Name: ODPOcean Drilling Program
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