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Magnetic and gravity constraints on forearc upper crustal structure and composition, offshore northeast Japan

Journal of Geomagnetism & Geoelectricity

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Abstract

Marine magnetic and gravity data from the northeast Japan forearc offer insight to the subsurface structure, density and magnetization from which geologic interpretations and tectonic reconstructions can be made. Positive marine magnetic anomalies, on-land geology, drill hole data, and 2-1/2-dimensional models reveal that Kitakami plutons and possibly their associated volcanic rocks constitute part of the modern forearc basement and lie 100-150 km further east than previously thought. A method to create magnetization and density contrast maps was employed to produce a three-dimensional picture of the forearc basement rock properties averaged over a 14-km thickness. -Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Magnetic and gravity constraints on forearc upper crustal structure and composition, offshore northeast Japan
Series title:
Journal of Geomagnetism & Geoelectricity
Volume
46
Issue:
6
Year Published:
1994
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
423
Last page:
441
Number of Pages:
19