LITHOCHRONOLOGIC UNITS AND MINERAL DEPOSITS OF THE APPALACHIAN OROGEN FROM MAINE TO ALABAMA This map was originally designed to illustrate the lithologic nature of the rocks in the Appalachian orogen and to be an underlay for the mineral deposits database for the Appalachians. Most of the geology was compiled by John Peper; M. Foose added some additional peripheral sections. The mineral deposits were compiled in the early 1980's by a group of economic geologists within the USGS Eastern Mineral Resources Branch. These geologists included deposits that were of significant size and economic importance, but also included small deposits which represented the metallogenic character of the Appalachians. The intent of this mineral deposit compilations was to reflect the Appalachian mineral endowment and metallogeny. The geologic and mineral deposit compilation was concluded in the early 1990's and was done using manual drafting and type-written tables. Subsequently, the project languished until GIS technology enabled the results of this manual work to be directly brought into digital formats. *** NOTE: This file should NOT be used at a scale greater than 1:1,000,000. *** NOTE2: When performing a query on either lithology or age in ArcView, one must check the "update values" box in the query builder BEFORE adding a field to the query equation. Then the values will be added to the list and one can choose a specific value for the query desired. *** NOTE3: The fault files were obtained from a published source; therefore, the fault file is restricted to the coverage of that source (which is the southeast of this map), so no faults are defined in the northern half of the map. The files and folders are as follows: Files: readme.txt - The current text file that you are reading. peper.apr - The ArcView project file peper.aep - ArcExplorer project (free software download from ESRI) peper.axl - ArcExplorer 3.x (java edition) project ESRI provides a free viewing software called ArcExplorer. It can be downloaded from their website at the following web address: http://www.esri.com/software/arcexplorer/aedownload.html Folders: \data - ArcView shapefiles age.avl - ArcView legend for the age shapefile. age.dbf -| age.sbn | age.sbx |--- shapefile that contains the geologic age of the units. age.shp | age.shx -| lithology.avl - ArcView legend for the lithology shapefile. lithology.dbf -| lithology.sbn | lithology.sbx |--- shapefile that contains the lithology of the units. lithology.shp | lithology.shx -| major_comm.avl - ArcView legend for major commodities. mineral_deposits.avl - ArcView legend for the mineral deposis shapefile. mineral_deposits.dbf -| mineral_deposits.sbn | mineral_deposits.sbx |--- shapefile that contains the mineral deposits. mineral_deposits.shp | mineral_deposits.shx -| normal_flts.dbf -| normal_flts.sbn | normal_flts.sbx |--- shapefile that contains normal faults for the southeast. normal_flts.shp | normal_flts.shx -| states.dbf -| states.shp |--- shapefile that contains the states of the coverage area. states.shx -| thrust_flts.dbf -| thrust_flts.sbn | thrust_flts.sbx |--- shapefile that contains thrust faults for the southeast. thrust_flts.shp | thrust_flts.shx -| \docs - metadata.txt - metadata file references.doc - Microsoft Word document with list of sources for metal & related deposits. sources.txt - Text file that contains sources used to compile the Appalachian map. \e00 - Coverages that are in ARC export file format (.e00) age.e00 lithology.e00 mineral_deposits.e00 normal_flts.e00 thrust_flts.e00 \images - index_map.jpg Questions or comments regarding this product should be addressed to: Michael P. Foose mfoose@usgs.gov 703-648-6055 Suzanne Nicholson swnich@usgs.gov 703-648-6344 OR Connie Dicken cdicken@usgs.gov 703-648-6482