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The AAPG/Datapages Combined Publications Database
Utah Geological Association
Abstract
Magnetic Anomalies and Structural Geology of Stocks and Laccoliths in the Henry Mountains, Utah
Abstract
An aeromagnetic survey of the Henry Mountains by Gulf Research and Development Company confirms the interpretations given in U.S. Geological Survey Professional Paper 228, based on surface geology, that the intrusions identified as stocks are steep sided, roughly cylindrical masses. The survey adds additional information suggesting that the stocks at Mts. Holmes and Ellsworth are inclined, that the Bromide Basin stock on Mt. Ellen widens downward, and that other stocks are located under the north part of Mt. Ellen. This helps explain the extensive mountain dome at Mt. Ellen.
The magnetic data strongly support the evidence from the structural geology that the laccoliths and bysmaliths radiating from the stocks are shallow, floored intrusions evidently injected radially from the stocks.
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