Left-lateral displacement of the Naguri fault as inferred from gravity anomaly

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Other Title
  • 重力異常からみた名栗断層の左横ずれ
  • ジュウリョク イジョウ カラ ミタ ナグリ ダンソウ ノ ヒダリヨコズレ

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Abstract

Gravity measurements have been conducted at 68 stations to focus on west-northwest trending Naguri fault (NGF), which is supposed to be the northern extension of Tachikawa fault. It is found in the Bouguer anomaly map that iso-anomaly contour-lines are distorted due to the NGF left-lateral horizontal displacement, the amount of which is presumed to be a few kilometers. The vertically dipping fault plane cuts the Chichibu formation and presumably the underlying Mikabu-Sambagawa metamorphic rocks at a depth of about 1.2km.

Journal

  • Active Fault Research

    Active Fault Research 1997 (16), 7-12, 1997

    Japanese Society for Active Fault Studies

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