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This is an Arc/Info coverage showing the general elevation of the top of the Herrin (No. 6) coal in Illinois. These 100-foot isolines were contoured by Earthvision software using more than 22,000 data points. The data was not contoured using fault lines for control and no manual adjustments were made to the contours to reflect the presence of known faults. Limited data were available in the north central and central portions of the state. This data set is intended for use at a scale of 1:750,000.
Categories: Web Site; Tags: 17145 = Perry, 17169 = Schuyler, 17101 = Lawrence, geology, 17179 = Tazewell, All tags...
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Outlines of areas mined for the Springfield coal in Illinois as of January 1, 1996. This information was extracted from detailed coal mine data stored in the ISGS Coal Section library database. Lines delineate the approximate outer boundary of individual mines (if known) or general mined areas. Interior mine boundaries such as pillars or small blocks of unmined coal are commonly not depicted. Outlines have been compiled from a variety of sources. Outlines of areas mined before 1987 are commonly from source maps at scales of 1:62,500 or smaller. Outlines of areas mined since 1987 are commonly digitized at scales ranging from 1:4800 to 1:12,000. Mines whose extent is not known or which only mined a few acres are not...
Categories: Web Site; Tags: 17145 = Perry, 17169 = Schuyler, 17101 = Lawrence, geology, 17179 = Tazewell, All tags...
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Geologic polygon features within the Miners Delight, Wyoming 1:24,000 quadrangle. It is a digitized version of bedrock geology map series developed by the Wyoming Geological Survey. The information provides basic bedrock geologic information and features to include named and geologic map units based on the rock types present. It is a STATEMAP product. This dataset is available for purchase through the WSGS, Digital Product MS-38. http://sales.wsgs.uwyo.edu/catalog/index.php
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Geologic map of the Lookout Ridge quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
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Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.
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Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.
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This cover contains the outlines of recent landslides formed prior to Hurricane Mitch in October - November 1998. Jeffrey Coe and Robert Bucknam mapped the landslides. Most landslides were mapped using 1:40,000-scale aerial photographs and a Kern PG-2 photogrammetric plotter at 4X and 8X magnifications. The photographs were scaled and oriented to the topographic base map using prominent topographic landmarks and plotted on a transparent polyester overlay registered to the topographic base maps at scales of 1:50,000 or 1:25,000. In areas where landslides were very sparse, the aerial photographs were scanned with a mirror stereoscope at 4X magnification, and landslide locations were transferred to base maps by inspection....
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Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.
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Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.
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The paper version of the Geologic Map of the eastern part of the Challis National Forest and vicinity, Idaho was compiled by Anna Wilson and Betty Skipp in 1994. The geology was compiled on a 1:250,000 scale topographic base map. TechniGraphic System, Inc. of Fort Collins Colorado digitized this map under contract for N.Shock. G.Green edited and prepared the digital version for publication as a GIS database. The digital geologic map database can be queried in many ways to produce a variety of geologic maps.
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Lithology of Russia, from the Land Resources of Russia collection. The attribute displayed is the dominant parent rock for the polygon. Full description of this dataset can be found at http://www.iiasa.ac.at/Research/FOR/russia_cd/litho.htm .


map background search result map search result map Elevation of the Herrin Coal in Illinois Mined areas of the Springfield Coal in Illinois Bedrock Geology of the Miners Delight 7.5' Quadrangle at 1:24,000 Geologic map of the Lookout Ridge quadrangle, Alaska Aeromagnetic data for Saddle Mountain, Idaho Aeromagnetic data for Sherbrooke-Lewiston, New Hampshire Aeromagnetic data for Amargosa-Death Valley, California Aeromagnetic data for Adirondack Mountains North, New York Survey Part 2 of 2 Aeromagnetic data for Southeast Ohio, Ohio Aeromagnetic data for San Jose, California Geologic Map of the eastern part of the Challis National Forest and vicinity, Idaho Older landslides in Tactic quadrangle, Guatemala Land resources of Russia - Lithology (Dominant parent rocks) Bedrock Geology of the Miners Delight 7.5' Quadrangle at 1:24,000 Older landslides in Tactic quadrangle, Guatemala Aeromagnetic data for Saddle Mountain, Idaho Aeromagnetic data for San Jose, California Aeromagnetic data for Adirondack Mountains North, New York Survey Part 2 of 2 Aeromagnetic data for Sherbrooke-Lewiston, New Hampshire Aeromagnetic data for Amargosa-Death Valley, California Aeromagnetic data for Southeast Ohio, Ohio Geologic Map of the eastern part of the Challis National Forest and vicinity, Idaho Geologic map of the Lookout Ridge quadrangle, Alaska Mined areas of the Springfield Coal in Illinois Elevation of the Herrin Coal in Illinois Land resources of Russia - Lithology (Dominant parent rocks)