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

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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
DOI 10.5636/jgg.46.423
Volume 46
Issue 6
Year Published 1994
Language English
Publisher J-STAGE
Description 19 p.
First page 423
Last page 441
Country Japan
Other Geospatial Pacific Ocean
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