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	Geologic map - Wikipedia, the free encyclopedia
		Whereas topographic maps are produced by the United States Geological Survey in conjunction with the states, geologic maps are usually produced by the states.
		There are almost no geologic map resources for some states, while a few states, such as Kentucky, are extensively mapped geologically.
		The oldest preserved geologic map is the Turin papyrus, made around 1150 BCE for gold deposits in Egypt.
	en.wikipedia.org /wiki/Geologic_map (294 words)

	Geologic map -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-26)
		A geologic map is a special-purpose (A diagrammatic representation of the earth's surface (or part of it)) map made for the purpose of showing subsurface geological features.
		Whereas (additional info and facts about topographic maps) topographic maps are produced by the (additional info and facts about United States Geological Survey) United States Geological Survey in conjunction with the states, geologic maps are usually produced by the states.
		There are almost no geologic map resources for some states, while a few states, such as (A state in east central United States; a border state during the American Civil War; famous for breeding race horses) Kentucky, are extensively mapped geologically.
	www.absoluteastronomy.com /encyclopedia/g/ge/geologic_map.htm (356 words)

	Geologic Maps Standards
		Maps and the discipline of mapping, developed by two centuries of practice with paper and sharp pencil, are integral to geology as we know it.
		"A geologic map is an expression of an hypothesis.
		Most geologic mappers see only a fraction of a map area, but possess powerful theoretical tools (Steno's Laws, expectations of facies patterns, and so on) that, with an Earth history inferred from these limited observations, allow extrapolation of geologic relations to the rest of the map sheet, even the areas that are covered.
	www.cartage.org.lb /en/themes/Sciences/Earthscience/Geology/AboutGeology/MapsStandards/MapsStandards.htm (1128 words)

	Field geology maps and reports
		Map of surficial geology of Butler County, Kansas.
		The level of geologic detail is limited by map scale, which is often determined by the "base map" utilized for a geologic mapping project.
		A geologic map is usually accompanied be a written report that provides further explanation of the surficial geology depicted on the map.
	academic.emporia.edu /aberjame/field/geo_map.htm (1068 words)

	SOFIA - Florida Geological Survey OFR 80 - Geologic Map of Florida - Introduction
		Groundwork for a new geologic map of Florida began in the 1980s with a county-level mapping effort as part of a statewide radon investigation.
		A peer review of the geologic map and this text by members of the geologic community outside the FGS was done by S. Upchurch, R. Portell, T. Missimer, J. Bryan, J. Vecchioli, A. Tihansky, K. Cunningham, G. Barr and R. Spechler.
		The geologic structures (Figure 4) that have affected shallow Tertiary and Quaternary sediments of the Florida Platform have been defined by numerous authors (Puri and Vernon, 1964; Miller, 1986; Scott, 1988; Scott, 1991).
	sofia.usgs.gov /publications/maps/florida_geology/intro.html (1275 words)

	Digital Cartographic standards for 1:50,000 Geologic map: some important considerations
		In bedrock geologic map, the extent of exposure and the character of the map units (Formations in case of 1:50,000 map) control the accuracy of the map.
		Geologic objects are commonly defined and observed with a resolution that is near the intrinsic resolution of the map (Haugerud, 1998).
		A geological map not only exhibit the spatial distribution of rock units in three dimension but also reflects a wide spectrum of earth science database, in which the most significant element is the meso and the megascopic structural feature.
	www.gisdevelopment.net /application/geology/mineral/mi03087pf.htm (3990 words)

	KENTUCKY GEOLOGICAL SURVEY GEOLOGIC MAP DATABASE (Site not responding. Last check: 2007-10-26)
		The Kentucky Geological Survey (KGS) is nearing the completion of a project to digitize all 707 of the 7.5-minute geologic quadrangle maps that cover the state of Kentucky; they were published cooperatively with the U.S. Geological Survey between 1960 and 1978.
		A centralized geologic map database is needed at KGS for at least two reasons.
		Kentucky geologic map databases were used for a National Geologic Map Database (NGMDB) prototype project to dem-onstrate analytical capabilities of a distributed map database (ncgmp.usgs.gov/ngmdbproject/reports/).
	gsa.confex.com /gsa/2003AM/finalprogram/abstract_63201.htm (452 words)

	Encyclopedia: Geologic map (Site not responding. Last check: 2007-10-26)
		A map of the world by Johannes Kepler A map is a simplified depiction of a space, a navigational aid which highlights relations between objects within that space.
		Example of a topographic map with contour lines Topographic maps, also called contour maps, topo maps or topo quads (for quadrangles), are maps that show topography, or land contours, by means of contour lines.
		The Turin Papyrus is an ancient Egyptian map, generally considered the oldest surviving map of topographical interest from the ancient world.
	www.nationmaster.com /encyclopedia/Geologic-map (774 words)

	Big Island geologic map
		The map is the first to show in detail the age and distribution of the lava flows that form the surface of the Big Island.
		The new map is a compilation of geologic mapping undertaken from 1975 to 1995 by approximately 20 geologists from the Geological Survey and various universities.
		The map's emphasis on the chronology of the lava flows reflects the application of age-determination techniques that were unavailable when the map's classic predecessor was published by Harold Stearns and Gordon Macdonald in 1946.
	hvo.wr.usgs.gov /volcanowatch/1996/96_12_20.html (822 words)

	NEW GEOLOGIC MAP OF ELK COUNTY AVAILABLE (Site not responding. Last check: 2007-10-26)
		The map, compiled by Survey geologist Daniel Frances Merriam, is part of a Survey program to produce new geologic maps of counties in the state.
		Because geologic maps show the rock formations likely to be encountered in a given location, they are useful in construction, in understanding soils and agriculture, in searching for water and mineral deposits and in a variety of engineering and environmental uses.
		The map, produced in full color, is drawn at a scale of 1:50,000, so that one inch on the map equals about three-fourths of a mile of actual distance.
	www.news.ku.edu /1997/97N/SepNews/Sep12/elkcounty.html (467 words)

	Geologic Map of Kentucky (Site not responding. Last check: 2007-10-26)
		The map below is a geologic map of Kentucky.
		The geologic ages shown are periods of time when the rocks were sediments just deposited.
		So on the map above, the Ordovician strata is exposed in the center of the State, but continues beneath the surface in the areas where Silurian and Devonian (and younger) strata occur at the surface.
	www.uky.edu /KGS/coal/webgeoky/pages/geologymap.html (448 words)

	What is a geologic map? (Site not responding. Last check: 2007-10-26)
		But, whereas the maps we know best show the distribution of roads or rivers or county boundaries, a geologic map shows the distribution of geologic features, including different kinds of rocks and faults.
		But all units, named and unnamed, have a color on the geologic map, and the area of a given color is the area where that geologic unit is the one at the surface (usually the soil on top of the rocks is disregarded).
		Geologic units are named and defined by the geologists who made the geologic map, based on their observations of the kinds of rocks and their investigations of the age of the rocks.
	www2.nature.nps.gov /grd/usgsnps/gmap/gmap1.html (473 words)

	Geology of Kentucky (Site not responding. Last check: 2007-10-26)
		Geologic Map: A description of the rock strata at the surface of Kentucky.
		Beneath the Surface: A description of strata and geologic structures (faults, basins, arches) beneath the surface of Kentucky.
		Kentucky was the first state in the Nation to be topographically mapped at a detailed scale (1:24,000) and the first (and only) state to be completely geologically mapped at a detailed scale (1:24,000).
	www.uky.edu /KGS/coal/webgeoky/kygeolgy.htm (1057 words)

	Geologic Map of the Riverside East 7.5' Quadrangle, Riverside County, California
		Geologic mapping and digital preparation of this report were sponsored jointly by (1) the National Cooperative Geologic Mapping Program of the U.S. Geological Survey, (2) the California Division of Mines and Geology, (3) the Southern California Areal Mapping Project (SCAMP), and (4) the U.S. Air Force.
		Geologic lines and points on 1:24,000 scale geologic maps are judged to meet SCAMP's internal map-accuracy standards if they are located to within +/-15 meters, relative to topographic or cultural features on the base map.
		The geologic map database of the Riverside East 7.5' quadrangle contains new data that have been subjected to rigorous review and are a substantially complete representation of the current state of knowledge concerning the geology of the quadrangle.
	geo-nsdi.er.usgs.gov /metadata/open-file/01-452/metadata.faq.html (2404 words)

	USGS Astrogeology: Planetary Geologic Mapping Home Page
		Geologic mapping investigations of any imaged planetary body (except Earth) are proposed to NASA's Planetary Geology and Geophysics Program on an annual basis (generally due sometime between late April and early June) and then reviewed by the Lunar and Planetary Geoscience Review Panel.
		Two primary programs underway now are the systematic mapping of Venus at 1:5,000,000 scale using Magellan SAR data and local (1:500,000) to regional (1:5,000,000) scale mapping of Mars based on medium- to high-resolution Viking images.
		Geologic maps can be produced from existing map bases that are part of established map series (see the Index of Planetary Maps, 1992 or additions since 1992) or ones specifically generated for the geologic map.
	astrogeology.usgs.gov /Projects/PlanetaryMapping/PGM_home.html (463 words)

	Index to Geologic Maps of Maryland
		The original map was printed at a scale of 1:250,000, or 4 miles to the inch.
		Therefore we have divided the map into counties and a geologic map of each county can be view on a single page.
		Because the projection of the original map was distorted during reproduction, and the paper medium is not stable, these images do not meet any cartographic standards.
	www.mgs.md.gov /esic/geo (579 words)

	Geologic Map of Alabama (Site not responding. Last check: 2007-10-26)
		The map was developed from 4 1:250000 scale maps representing all areas in the state of Alabama.
		Digital geologic map is also availible as a data set for the complete state including subdivisions for counties.
		Geologic formations are bodies of rock strata that consists dominantly of a certain lithologic type or combination of types.
	www.gsa.state.al.us /gsa/GIS/metadata/alabamageo2.htm (811 words)

	Digital State Geologic Maps - Surveys and Analysis Projects
		Note a revised version of the Arkansas digital map is being prepared by the NSA and should be available by approximately January, 2004 as an open-file report available at http://pubs.usgs.gov/products/books/openfile/.
		The digital map is available through the California Geological Survey on CD 2000-07, "GIS Data for the Geologic Map of California": http://www.consrv.ca.gov/cgs/information/publications/pub_index/gis_data.htm.
		A fl and white generalized bedrock geologic map of Maine is at: http://www.state.me.us/doc/nrimc/pubedinf/factsht/bedrock/bedmap.gif.
	minerals.usgs.gov /projects/surveys_and_analysis/dig_geol_maps.html (3787 words)

	New York Geology (Site not responding. Last check: 2007-10-26)
		The geologic map is a reduced and simplified version of the "Geologic Map of New York," published in six separate sheets at 1:250,000 scale.
		Surficial material is ignored on generalized bedrock geologic maps, but it is shown here in several areas of the Adirondacks and over all of Long Island, where is it so thick that it masks all clues to the bedrock geology.
		Several faults not shown on the geologic map are shown in the cross section as examples of their character and importance.
	gretchen.geo.rpi.edu /roecker/nys/nys_edu.pamphlet.html (6087 words)

	Pennsylvania Geological Survey: Map 61
		The List of Quadrangles is also augmented by citations of later geologic maps and information that were separately published after compilation of the preliminary geologic maps in Map 61.
		Thus, for some included maps, intermediate topographic contour lines are very faint or missing in the computer screen image and may be missing on the digitally printed map.
		Some maps have obscured geologic symbols or contacts where topographic contours are very close or where extensive cultural symbols are present on the topographic map base.
	www.dcnr.state.pa.us /topogeo/map61/61intro.aspx (482 words)

	On-line Digital Geologic Map Database - San Francisco Bay Geology (Site not responding. Last check: 2007-10-26)
		Most geologic maps in the San Francisco Bay area show the geology of the bedrock (the hard rocks that make up the hills and the ancient and active earthquake faults), or the Quaternary geology (young, unhardened sediments that cover the flat areas), or both.
		Geologic Maps and Structure Sections of the southwestern Santa Clara Valley and southern Santa Cruz Mountains, Santa Clara and Santa Cruz Counties, California (MF 2373)
		Map and Map Database of Susceptibility to Slope failure by sliding and earthflow in the Oakland area, California (MF 2385)
	sfgeo.wr.usgs.gov /sfbay/geolist.html (605 words)

	Polygon Data from 1980 "Geologic Map of Alaska"
		Although the latitude/ longitude grid shown on the published Beikman map was an Albers equal area projection, the geologic polygons were not in the same projection since they did not align with an Albers equal area coverage of the Alaskan coastline.
		Map unit (polygon)locations and attributes were checked by three reviewers, by comparing a printed copy of the coverage to the original map.
		Map unit delineations are polygons that are generalized combinations of geologic Formations and Groups, and include both bedrock and surficial deposit units.
	agdc.usgs.gov /data/usgs/geology/metadata/beikman.html (1578 words)

	Meriam Library -- Map Collection
		This index covers the detailed geologic maps of California which are distributed among the fourteen irregular issued map and monograph series published by the United States Geological Survey.
		The index correlates U.S.G.S. geologic maps of California with 7.5’ and 15’ topographic quadrangles.
		Information provided for each quadrangle are: series name and number of each report containing a geologic map of that quadrangle or portion of it, the extent of coverage of the area, and the scale for those maps made after 1981.
	www.csuchico.edu /lbib/maps/cal_geo/indx_cal_geo.html (218 words)

	About geologic maps in the U.S. Geological Survey (Site not responding. Last check: 2007-10-26)
		Geologic maps are made by studying the rocks and materials exposed at the surface and depicting information about those rocks on a map.
		The geology is printed on topographic maps to show the landforms as well as roads, cities and rivers (the topography doesn't show on this example).
		To read a geologic map is to understand not only where earth resources and characteristics are located, but also how and when these earth features formed.
	wrgis.wr.usgs.gov /wgmt/aboutmaps.html (685 words)

	Central Region Investigation Series
		Geologic Map of the Hogback Mountain Quadrangle, Lewis and Clark and Meagher Counties Montana.
		Geologic Map of the Wolcott Quadrangle, Eagle County, Colorado.
		Geologic map of the Skull Creek quadrangle, Moffat County, Colorado.
	cpg.cr.usgs.gov /pub/i-maps.html (1545 words)

	Generalized Geologic Map of the Conterminous United States
		A geologic map uses a combination of lines, symbols, and colors to show the composition and structure of earth materials and their distribution across and beneath the Earth's surface.
		Several map layers are used to comprise the Generalized Geologic Map of the Conterminous United States, including geology, faults, major calderas, impact structures, and the limits of continental glaciation.
		This kind of general geologic information is used to find natural resources such as water, minerals, oil, and gas; evaluate potential hazards such as earthquakes, landslides, floods, and volcanic eruptions; and to describe a fundamental part of the environment that controls the distribution of plants and animals.
	nationalatlas.gov /mld/geology.html (277 words)

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