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Book Chapter

Gravity Exploration for Petroleum in Railroad Valley, Nevada-Search for the Subtle Trap

By
Douglas J. Guion
Douglas J. Guion
Golden Buckeye Energy Corporation Denver, Colorado
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William C. Pearson
William C. Pearson
Guion & Pearson, Inc. Denver, Colorado
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Published:
January 01, 1982

Abstract

The gravity method is extremely important in Basin and Range exploration for subtle fault/truncation traps. In fact, significant gravity anomalies exist over all three oil fields in Railroad Valley: Eagle Springs, Trap Spring, and the more recent apparent discovery north of Eagle Springs. Primarily, Railroad Valley oil production is from Cretaceous-Eocene and Oligocene reservoirs in combination fault/truncation traps on synclinal embayments on the downthrown sides of the major basin-bounding faults. Such hydrocarbon trapping embayments represent relative "thicks" in the Tertiary isopach. Local gravity minima occur over the Tertiary "thicks," and linear gravity gradients occur over the major basin-bounding faults. Proper combinations of these gravity features indicate petroleum prospects in the Cretaceous-Eocene and Oligocene reservoirs.

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Contents

AAPG Memoir

The Deliberate Search for the Subtle Trap

Michel T. Halbouty
Michel T. Halbouty
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American Association of Petroleum Geologists
Volume
32
ISBN electronic:
9781629811697
Publication date:
January 01, 1982

GeoRef

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