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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 67 (1983)

Issue: 8. (August)

First Page: 1326

Last Page: 1326

Title: Aeromagnetics in Exploration: ABSTRACT

Author(s): Noel F. Rasmussen

Article Type: Meeting abstract

Abstract:

Uses for aeromagnetic surveys include the evaluation of prospect leads and prospects that are controlled by basement fault movements. The identification of basement faults is based on the interpretation of the significance of Previous HitmagneticNext Hit edges. Previous HitMagneticNext Hit edges are of two general types: (1) contacts between rock types within the basement, and (2) faults on top of the basement.

Traditionally, aeromagnetic surveys have undersampled so that Previous HitmagneticNext Hit-edge interpretations were not practicable. High resolution aeromagnetic surveys are designed so that basement faulting can be identified and interpreted. Interpretations must be made from Previous HitmagneticNext Hit records that have been processed adequately.

Many of the Previous HitmagneticNext Hit edges which are contacts between different basement lithologies are related to the paleostress fields and are caused by shearing. The identification of the components of the shear models help to explain the orientations of Previous HitmagneticTop edges and help to identify the types of basement faults that can be expected. The interpretations are used as working hypotheses for establishing prospects and prospect leads in the overlying sediments.

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