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Map and diagrams showing the distribution, thickness, and textural characteristics of Holocene sediments, Penobscot Bay, Maine Map and diagrams showing the distribution, thickness, and textural characteristics of Holocene sediments, Penobscot Bay, Maine
This report illustrates, describes, and briefly discusses the discusses the distribution and characteristics of Holocene sediments in Penobscot Bay, Maine. Penobscot Bay is one of the major estuaries along the U.S. Atlantic coast. It constitutes as area of about 1,100 km2 and extends more than 50 km inland from the Gulf of Maine. The bay is divided into three main passages by numerous...
Map showing geochemical data for panned stream sediments from the Bread Loaf Further Planning Area, Addison and Washington counties, Vermont Map showing geochemical data for panned stream sediments from the Bread Loaf Further Planning Area, Addison and Washington counties, Vermont
A geochemical survey of bedrock samples in the Bread Loaf Roadless Area (index map; fig. 1) was conducted by the U.S. Geological Survey (USGS) during October, 1981 in order to outline areas that may contain undiscovered mineral deposits. This report describes the results of a geochemical analysis of panned concentrates collected from stream sediments, and complements other geologic and...
Map showing locations and statistical parameters of beach and offshore sand samples, Tutuila Island, American Samoa Map showing locations and statistical parameters of beach and offshore sand samples, Tutuila Island, American Samoa
In April 1985, sand samples were collected from many of the beaches on Tutuila Island, American Samoa, and in July 1985, three bays were surveyed using side-scan sonar and shallow seismic profiling. During that second trip, scuba divers collected sand samples from the surveyed areas. Dingler and others (1986) describes the study; this report presents the grain-size and composition data...
Map showing the distribution and characteristics of plutonic rocks in the Tonopah 1 degree by 2 degrees Quadrangle, central Nevada Map showing the distribution and characteristics of plutonic rocks in the Tonopah 1 degree by 2 degrees Quadrangle, central Nevada
Plutonic rocks, mostly granite and granodiorite, are widely distributed in the west two-thirds of the Tonopah 1 degree by 2 degree quadrangle, Nevada. These rocks were systematically studied as part of the Tonopah CUSMAP project. Studies included field mapping, petrographic and modal analyses, geochemical studies of both fresh and altered plutonic rocks and altered wallrocks, and K-Ar...