Geology topics
M. N. Machette
Publications and source records attributed to M. N. Machette.
Preliminary assessment of paleoseismicity at White Sands Missile Range, southern New Mexico; evidence for recency of faulting, fault segmentation, and repeat intervals for major earthquakes in the region
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Preliminary assessment of Quaternary faulting near Truth or Consequences, New Mexico
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Geologic map of the Beaver quadrangle, Beaver and Piute Counties, Utah
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Map of Quaternary and Pliocene faults in the eastern part of the Aztec 1 degree by 2 degrees Quadrangle and the western part of the Raton 1 degree by 2 degrees Quadrangle, northern New Mexico
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Geologic map of the southwest-quarter of the Beaver Quadrangle, Beaver County, Utah
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Integrated uranium system in the Marysvale volcanic field, west-central Utah
Uranium in the Marysvale volcanic field is known to occur in several geologic environments and is thought to occur in others. These known and hypothetical occurrences are of various kinds, ranging in derivation from rhyolite magma, through porphyry-type deposits, hydrothermal vein deposits, dispersed hydrothermal deposits, and, after secondary transport in ground and surface water, roll–front or sedimentary–trap deposits in basin-fill sediments. To date, only the hydrothermal vein environment has been productive, but billions of pounds of uranium were available in all other environments, and if proper conditions existed, significant concentrations probably formed by other processes. The intracaldera fill of the Mount Belknap caldera and sediment-filled basins adjoining the Tushar Mountains are especially favorable exploration targets for the undiscovered uranium believed to exist.
Geologic map of the Lafayette quadrangle, Adams, Boulder, and Jefferson counties, Colorado
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