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Pressure increases, the formation of chromite seams, and the development of the ultramafic series in the Stillwater Complex, Montana Pressure increases, the formation of chromite seams, and the development of the ultramafic series in the Stillwater Complex, Montana

This paper explores the hypothesis that chromite seams in the Stillwater Complex formed in response to periodic increases in total pressure in the chamber. Total pressure increased because of the positive δV of nucleation of CO2 bubbles in the melt and their subsequent rise through the magma chamber, during which the bubbles increased in volume by a factor of 4–6. By analogy with the...
Authors
B. R. Lipin

Water resources and the hydrologic effects of coal mining in Washington County, Pennsylvania Water resources and the hydrologic effects of coal mining in Washington County, Pennsylvania

Washington County occupies an area of 864 square miles in southwestern Pennsylvania and lies within the Pittsburgh Plateaus Section of the Appalachian Plateaus physiographic province. About 69 percent of the county population is served by public water-supply systems, and the Monongahela River is the source for 78 percent of the public-supply systems. The remaining 31 percent of the...
Authors
Donald R. Williams, John K. Felbinger, Paul J. Squillace

Dinoflagellates Dinoflagellates

No abstract available.
Authors
Lucy E. Edwards

A method for classifying land loss by morphology and process A method for classifying land loss by morphology and process

No abstract available.
Authors
L.D. Wayne, L. D. Britsch, M.R. Byrnes, S. Penland, S.J. Williams
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