48 results returned
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Title: Prague, Czech Republic, 1900 (Raster Image)
- Raster data
- 2015
- Not owned by MIT (Owned by Harvard)
Summary: This layer is a georeferenced raster image of the historic paper map entitled: Plan kral. hlav. mesta Prahy a obci sousednich, sestavil a nakreslil Josef Bro ; ryl a tiskl V. Neubert. It was published by nakladem A. torcha Syna in 1900. Scale 1:12,000. Covers Prague, Czech Republic. Map in Czech.The image inside the map neatline is georeferenced to the surface of the earth and fit to the 'European Datum 1950 UTM Zone 33N' coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map.This map shows features such as roads, railroads and stations, street-railroads, drainage, built-up areas and selected buildings, ground cover parks, city districts and boundaries, and more. Includes inset: Prehledna mapa Velike Prahy.This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
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Title: Munich, Germany, 1860 (Raster Image)
- Raster data
- 2010
- Not owned by MIT (Owned by Harvard)
- Harvard Map Collection, Harvard College Library
- Heyberger, Josef.
- Gebruder Obpacher.
- F. Bruckmann KG.
Summary: This layer is a georeferenced raster image of the historic paper map entitled: Munchen, augefertigt v. J. Heyberger. It was published by Friedrich Bruckmann's Verlag in 1860. Scale 1:12,000. Covers Munich, Germany. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the 'Deutsches Hauptdreiecksnetz (DHDN) Gauss Kruger Zone 4, Rauenberg Datum' coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, railroads and stations, drainage, built-up areas and selected buildings, ground cover, parks, and more. Relief shown by shading. Includes indexes and inset: Umgebung von Munchen. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
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Title: Ducatvs Westphaliae nova repraesentatio geographica
- Not specified
- 1757
- Not owned by MIT (Owned by University of Minnesota)
Summary: Relief shown pictorially.; Includes ill., text, and 3 bar scales. 45 x 53 centimeters, on sheet 46 x 55 centimeters Scale [1:200,000] General Map Collection
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Title: Manhattan, New York, N.Y., 1877 (Raster Image)
- Raster data
- 2007
- Not owned by MIT (Owned by Harvard)
Summary: This layer is a georeferenced raster image of the historic paper map entitled: Map of New York City, south of 46th St. : showing new arrangement of docks, piers, and water frontage, also soundings and former high water line .... It was published by Matthew Dripps in 1877. Scale [1:7,200]. Covers southern portion of Manhattan. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Universal Transverse Mercator (UTM) Zone 18N NAD83 projection. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as streets (with block numbers), railroads, drainage, selected public buildings (police stations, churches, theaters, schools, hotels, industries, etc.), wharves, parks, city wards, the former high water line, and more. Includes text: Key to r.r. routes, sub post offices, police stations, and street directory; and inset: New York in 1778. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
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Title: Vienna, Austria, 1770 (Image 4 of 4) (Raster Image)
- Raster data
- 2010
- Not owned by MIT (Owned by Harvard)
- Harvard Map Collection, Harvard College Library
- Gruss, Franz, fl. 1770.
- Trattner, Jos. Ant. Edlen von, (Joseph Antoine).
- Ne?ssner, Joseph.
- Nagel, Josef Anton, 1717-1794.
- Mansfeld, Johann Ernst, 1739-1796.
Summary: This layer is a georeferenced raster image of the historic paper map entitled: Grund Riss der Ka?. K?ningl. residenz stadt Wien unter glorw?rdigster Regierung be?der ma?ten. Josephs des IIten. R?m. Ka?sers un Mari? Theresi? R?m. Ka?serin und Apost. K?nigin auf allerh?chsten Befehl, unter der Direction dero hof Mathematici Joseph Nagel aufgenommen von den N.?. Reg.Ingenieur Franz Gruss und Joseph Ne?ssner ; J.E. Mansfeld Sculp. It was published in 1770. Scale [ca. 1:1,300]. Covers Vienna, Austria. This layer is image 4 of 4 total images, representing the northwest portion of the four sheet source map. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the MGI 3-Degree Gauss Kruger coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map.This map shows features such as roads, drainage, built-up areas and selected buildings, fortification and more.This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
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Title: Vienna, Austria, 1770 (Image 3 of 4) (Raster Image)
- Raster data
- 2010
- Not owned by MIT (Owned by Harvard)
- Harvard Map Collection, Harvard College Library
- Gruss, Franz, fl. 1770.
- Trattner, Jos. Ant. Edlen von, (Joseph Antoine).
- Ne?ssner, Joseph.
- Nagel, Josef Anton, 1717-1794.
- Mansfeld, Johann Ernst, 1739-1796.
Summary: This layer is a georeferenced raster image of the historic paper map entitled: Grund Riss der Ka?. K?ningl. residenz stadt Wien unter glorw?rdigster Regierung be?der ma?ten. Josephs des IIten. R?m. Ka?sers un Mari? Theresi? R?m. Ka?serin und Apost. K?nigin auf allerh?chsten Befehl, unter der Direction dero hof Mathematici Joseph Nagel aufgenommen von den N.?. Reg.Ingenieur Franz Gruss und Joseph Ne?ssner ; J.E. Mansfeld Sculp. It was published in 1770. Scale [ca. 1:1,300]. Covers Vienna, Austria. This layer is image 3 of 4 total images, representing the northeast portion of the four sheet source map. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the MGI 3-Degree Gauss Kruger coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map.This map shows features such as roads, drainage, built-up areas and selected buildings, fortification and more.This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
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Title: Vienna, Austria, 1770 (Image 1 of 4) (Raster Image)
- Raster data
- 2010
- Not owned by MIT (Owned by Harvard)
- Harvard Map Collection, Harvard College Library
- Gruss, Franz, fl. 1770.
- Trattner, Jos. Ant. Edlen von, (Joseph Antoine).
- Ne?ssner, Joseph.
- Nagel, Josef Anton, 1717-1794.
- Mansfeld, Johann Ernst, 1739-1796.
Summary: This layer is a georeferenced raster image of the historic paper map entitled: Grund Riss der Ka?. K?ningl. residenz stadt Wien unter glorw?rdigster Regierung be?der ma?ten. Josephs des IIten. R?m. Ka?sers un Mari? Theresi? R?m. Ka?serin und Apost. K?nigin auf allerh?chsten Befehl, unter der Direction dero hof Mathematici Joseph Nagel aufgenommen von den N.?. Reg.Ingenieur Franz Gruss und Joseph Ne?ssner ; J.E. Mansfeld Sculp. It was published in 1770. Scale [ca. 1:1,300]. Covers Vienna, Austria. This layer is image 1 of 4 total images, representing the southeast portion of the four sheet source map. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the MGI 3-Degree Gauss Kruger coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map.This map shows features such as roads, drainage, built-up areas and selected buildings, fortification and more.This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
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Title: Vienna, Austria, 1770 (Image 2 of 4) (Raster Image)
- Raster data
- 2010
- Not owned by MIT (Owned by Harvard)
- Harvard Map Collection, Harvard College Library
- Gruss, Franz, fl. 1770.
- Trattner, Jos. Ant. Edlen von, (Joseph Antoine).
- Ne?ssner, Joseph.
- Nagel, Josef Anton, 1717-1794.
- Mansfeld, Johann Ernst, 1739-1796.
Summary: This layer is a georeferenced raster image of the historic paper map entitled: Grund Riss der Ka?. K?ningl. residenz stadt Wien unter glorw?rdigster Regierung be?der ma?ten. Josephs des IIten. R?m. Ka?sers un Mari? Theresi? R?m. Ka?serin und Apost. K?nigin auf allerh?chsten Befehl, unter der Direction dero hof Mathematici Joseph Nagel aufgenommen von den N.?. Reg.Ingenieur Franz Gruss und Joseph Ne?ssner ; J.E. Mansfeld Sculp. It was published in 1770. Scale [ca. 1:1,300]. Covers Vienna, Austria. This layer is image 2 of 4 total images, representing the southwest portion of the four sheet source map. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the MGI 3-Degree Gauss Kruger coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map.This map shows features such as roads, drainage, built-up areas and selected buildings, fortification and more.This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
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Title: Mapa del distrito norte de la Baja California, Mexico
- Not specified
- 1914
- Not owned by MIT (Owned by University of Minnesota)
Summary: Corregido hasta Julio 31 de 1914.; Relief shown with hachures.; Includes index to municipal districts.; "Levantado por el perito agronomo, empadronador y perito valuador de predios rusticos y urbanos en esta demarcacio?n, con datos tomados personalmente desde 1894 ä 1910."; "Engraved and printed by the U.S. Geological Survey"--lower right.; Map shows towns, missions, roads and islands. 69 x 56 centimeters Scale not given. General Map Collection
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Title: Nile River & Red Sea Region, ca. 1870 (Raster Image)
- Raster data
- 2012
- Not owned by MIT (Owned by Harvard)
- Harvard Map Collection, Harvard College Library
- Johnston, Keith, 1844-1879.
- Johnston, Alexander Keith, 1804-1871.
- William Blackwood and Sons.
- W. & A.K. Johnston Limited.
Summary: This layer is a georeferenced raster image of the historic paper map entitled: Egypt, Arabia Petraea, and lower Nubia, by Keith Johnston. It was published by William Blackwood & Sons ; W. & K. Johnston, ca. 1870. Scale [ca. 1:2,854,868]. Covers the Nile River and Red Sea regions.The image inside the map neatline is georeferenced to the surface of the earth and fit to the Egypt Red Belt projected coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, territorial boundaries, shoreline features, roads, railroads, canals, wells, and more. Covers the Nile River and Red Sea regions.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.
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Title: Hamburg, Germany, 1910 (Raster Image)
- Raster data
- 2008
- Not owned by MIT (Owned by Harvard)
- Harvard Map Collection, Harvard College Library
- Carly, H.
- Hagenbeck, Carl, 1844-1913.
- Oscar und Robert Enoch (Firm)
Summary: This layer is a georeferenced raster image of the historic paper map entitled: H. Carly's Bebauungs-Plan von Hamburg und samtlichen Hamburgischen Vororten : nebst Plan von Altona-Ottensen, Wandsbeck und Umgebung sowie Plan von Hagenbecks Tierpark. It was published by Druck und Verlag H. Carly (Inh. Oscar und Robert Enoch) in [1910]. Scale [ca. 1:14,000]. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the WGS84 UTM Zone 32N coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, railroads and stations, street car lines, drainage, docks, built-up areas and selected buildings, parks, city districts, and more. Colored to show land use. Relief is shown pictorially. Includes inset: Carl Hagenbeck's Tierpark Stellingen. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
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Title: Klein-Asien, Syrien &c.
- Image data
- 1905
- Not owned by MIT (Owned by Princeton)
Summary: Map of the eastern Ottoman Empire; relief shown by hachures and spot heights. Insets: Irak-Arabi (scale 1:3,700,000). -- Ebene v. Troja -- Mosul und Ninive -- Smyrna (Izmir) und Umgebung (scales 1:500,000). In upper margin: Stielers Hand-atlas, no. 59. Probably issued in: Stielers Hand-atlas ... 9., von Grund aus neubearb. und neugestochene Aufl. Gotha : Justus Perthes, 1906.
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Title: Map of the Mississippi River from the falls of St. Anthony to the junction of the Illinois River
- Not specified
- 1887
- Not owned by MIT (Owned by University of Minnesota)
- Bosse, H.
- Farquhar, Francis Ulric
- Mackenzie, Alexander, 1844-1921
- Macomb, J. N. (John N.), 1810 or 1811-1889
- Peters, Norris
- Stibott, A. J.
- United States. Army. Corps of Engineers
- Warren, G. K. (Gouverneur Kemble), 1830-1882
Summary: Cartographic Details: 1 in. to 1 mile. Title from title sheet. "N. Peters, photo-lithographer, Washington, D.C." Includes index sheet. Relief shown pictorially. 38 x 60 centimeters 1:63,360 General Minnesota Maps
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Title: Route map between Bhamo & Mung-Mau through the hills of the Lenna Kakhyens
- Image data
- 1876
- Not owned by MIT (Owned by Princeton)
Summary: Relief shown by hachures and spot heights. Burmese frontier [boundary], Chinese frontier, and author's route are shown. Includes itinerary [table] of distances between destinations along route. From: The Journal of the Royal Geographical Society of London. Vol. 46 (1876), pp. 198-227; held in Firestone Library. Call number: G7 .J687 v. 46 1876
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Title: A sketch map of part of south eastern Africa to illustrate the journeys of Dr. Lacerda (1798), the Pombeiros (1806-11), and Major Monteiro (1831-1832)
- Not specified
- 1873
- Not owned by MIT (Owned by University of Minnesota)
Summary: Relief shown by hachures.; "Published for the Journal of the Royal Geographic Society by John Murray ..."; Includes notes, inset: The Pomberios route from the Cazembe to Murio Aquito's [at map scale], and ancillary map: [Africa]. 42 x 62 centimeters Scale approximately 1:3,000,000 General Map Collection
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Title: Map to illustrate a journey through Western Mongolia by Ney Elias, Junr., F.R.G.S. July 1872 to Jany. 1863
- Image data
- 1873
- Not owned by MIT (Owned by Princeton)
Summary: Relief shown by hachures and spot heights. Route of Mr. Elias, including dates and locations of encampments and extent of areas surveyed, is shown. Includes elevation profile of Mr. Elias's journey [scale ca. 1:5,910,000; vertical scale 1:120,000]. Major landmarks and locations of encampments are shown. Russian territory, Chinese territory, and dominions of Yakoob Beg shown by shading. "The positions which have been determined astronomically, are marked by the initial of the observer; (E.) Elias, (F.) Fritsche, (F.&B.) Fuss & Bunge, (L.) Lépissier, (M.) Matusovski, (S.) Schwarz." From: The Journal of the Royal Geographical Society of London. Vol. 43 (1873), pp. 108-56; held in Firestone Library. Call number: G7 .J687 v. 43 1873
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Title: Map to accompany Mr. Ney Elias' paper on the new course of the Yellow River
- Image data
- 1871
- Not owned by MIT (Owned by Princeton)
Summary: Relief shown by hachures. Depth along new course of Yellow River shown by soundings in fathoms. Old and new courses of Yellow River, present and former lakes, Grand Canal, and other major rivers are shown. From: The Journal of the Royal Geographical Society of London. Vol. 40 (1870), pp. 1-33; held in Firestone Library. Call number: G7 .J687 v. 40 1870
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Title: Fault Lines: Generalized Geologic Map of Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands, 2005
- Line data
- 2005
- Not owned by MIT (Owned by Stanford)
Summary: This line shapefile represents major fault lines in Alaska. This map complements the Generalized Geologic Map of the Conterminous United States by Reed and Bush. The data are generalized from a compilation prepared for use in the Geologic Map of North America, published as a paper map by the Geological Society of America and to be released as a digital file by the U.S. Geological Survey. This layer is part of the 1997-2014 edition National Atlas of the United States. These data have been prepared with a degree of detail appropriate for viewing at a scale of 1:7,500,000. Because of the degree of generalization required (generalization based on compilation scale), the data are intended primarily for display and for regional and national analysis, rather than for more detailed analysis in specific areas. No responsibility is assumed by the U.S. Geological Survey in the use of these data. National Atlas of the United States. (2005). Fault Lines, Alaska: Generalized Geologic Map of Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands, 2005. National Atlas of the United States. Available at: http://purl.stanford.edu/mh719vx4646. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: Geologic Units (Lines): Generalized Geologic Map of Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands, 2005
- Line data
- 2005
- Not owned by MIT (Owned by Stanford)
Summary: This line shapefile contains lines with labels and tags for major geologic units in Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands. In addition to the lines representing the areal extent of geologic units, it identifies major faults and continental glaciation in Alaska. The data depict the geology of the bedrock that lies at or near the land surface, but not the distribution of surficial materials such as soils, alluvium, and glacial deposits. This map complements the Generalized Geologic Map of the Conterminous United States by Reed and Bush. The data are generalized from a compilation prepared for use in the Geologic Map of North America, published as a paper map by the Geological Society of America and to be released as a digital file by the U.S. Geological Survey. This layer is part of the 1997-2014 edition National Atlas of the United States. These data have been prepared with a degree of detail appropriate for viewing at a scale of 1:7,500,000. Because of the degree of generalization required (generalization based on compilation scale), the data are intended primarily for display and for regional and national analysis, rather than for more detailed analysis in specific areas. No responsibility is assumed by the U.S. Geological Survey in the use of these data. National Atlas of the United States. (2005). Geologic Units (Lines): Generalized Geologic Map of Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands, 2005. National Atlas of the United States. Available at: http://purl.stanford.edu/dh049zh1538. The data set for the Generalized Geologic Map of Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands consists of four data layers. All the data layers were created as ArcInfo coverages and converted to other formats for distribution purposes. The data layers are distributed and should be used together. The data are available as shapefiles or ArcInfo Export files. The data layers for faults are included in two different versions. The following files are included: > fltg01l075 - Fault lines, with line decorations* > falt01l075 - Fault lines, without line decorations** > geol01m075 - Geologic units, as polygons > gtxt01l075 - Graphic representation of geologic unit text* > >* These files are not 'true' ArcInfo coverages; they are graphic > representations of symbols and text used on the geologic map. These > files should be used to produce appropriately symbolized graphics. > The decorations and text appear correctly only in Lambert Azimuthal > Equal Area projection. The parameters for the projection are: > Projection Lambert Azimuthal Equal Area > Datum NAD83 > Spheroid GRS1980 > Units Meters > Radius of the sphere of reference 6370997 > Longitude of center projection -100 > Latitude of center of projection 45 > >**This file is the same as the fault file marked with * but does not > include the line decorations. This is the 'true' ArcInfo line > coverage for faults. This file should be used for data analysis. Also distributed with the data is the shadeset, geoshade.shd. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, some ArcInfo- specific terminology is included for clarity and expediency. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: Geologic Units (Polygons): Generalized Geologic Map of Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands, 2005
- Polygon data
- 2005
- Not owned by MIT (Owned by Stanford)
Summary: This polygon shapefile contains polygon boundaries, tags and labels for major geologic units in Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands. In addition to the polygons representing the areal extent of geologic units, it identifies major faults and continental glaciation in Alaska. The data depict the geology of the bedrock that lies at or near the land surface, but not the distribution of surficial materials such as soils, alluvium, and glacial deposits. This map complements the Generalized Geologic Map of the Conterminous United States by Reed and Bush. The data are generalized from a compilation prepared for use in the Geologic Map of North America, published as a paper map by the Geological Society of America and to be released as a digital file by the U.S. Geological Survey. This layer is part of the 1997-2014 edition National Atlas of the United States. These data have been prepared with a degree of detail appropriate for viewing at a scale of 1:7,500,000. Because of the degree of generalization required (generalization based on compilation scale), the data are intended primarily for display and for regional and national analysis, rather than for more detailed analysis in specific areas. No responsibility is assumed by the U.S. Geological Survey in the use of these data. National Atlas of the United States. (2005). Geologic Units (Polygons): Generalized Geologic Map of Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands, 2005. National Atlas of the United States. Available at: http://purl.stanford.edu/bs303sf0424. The data set for the Generalized Geologic Map of Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands consists of four data layers. All the data layers were created as ArcInfo coverages and converted to other formats for distribution purposes. The data layers are distributed and should be used together. The data are available as shapefiles or ArcInfo Export files. The data layers for faults are included in two different versions. The following files are included: > fltg01l075 - Fault lines, with line decorations* > falt01l075 - Fault lines, without line decorations** > geol01m075 - Geologic units, as polygons > gtxt01l075 - Graphic representation of geologic unit text* > >* These files are not 'true' ArcInfo coverages; they are graphic > representations of symbols and text used on the geologic map. These > files should be used to produce appropriately symbolized graphics. > The decorations and text appear correctly only in Lambert Azimuthal > Equal Area projection. The parameters for the projection are: > Projection Lambert Azimuthal Equal Area > Datum NAD83 > Spheroid GRS1980 > Units Meters > Radius of the sphere of reference 6370997 > Longitude of center projection -100 > Latitude of center of projection 45 > >**This file is the same as the fault file marked with * but does not > include the line decorations. This is the 'true' ArcInfo line > coverage for faults. This file should be used for data analysis. Also distributed with the data is the shadeset, geoshade.shd. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, some ArcInfo- specific terminology is included for clarity and expediency. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.