DIGITAL DATABASE FOR THE QUATERNARY GEOLOGIC MAP OF THE WHITE LAKE 4 x 6 QUADRANGLE UNITED STATES, QUATERNARY GEOLOGIC ATLAS OF THE UNITED STATES Edited and integrated by Gerald M. Richmond, David L. Weide, and David W. Moore State compilations by David E. Pope, William A. Gilliland, and E.G. Wermund 1990 Miscellaneous Investigations Series Map I-1420 (NH-15) Digital edition 2012 by Charles A. Bush INTRODUCTION Files available through this site represent the digital component of the WHITE LAKE Quadrangle of the Quaternary Geologic Atlas of the U.S., Miscellaneous Investigations Series, Map I-1420 (NH-15). The files contain .e00 files, and pdf files of the map's illustrations and correlation diagram, and pdf files of the map unit descriptions and sources of information. An ARC/INFO aml, keyfiles and shadeset are included to produce the plot of the data. DISCLAIMERS This database, identified as I-1420 (NH-15), has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty, expressed or implies is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute such warranty. The U.S.Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. 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 information product, for the most part, is in the public domain,it also contains copyrighted material as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner. CONTACT INFORMATION Charles A. Bush U.S. Geological Survey (303) 236-4723 cbush@usgs.gov CONTENTS 00Readme.txt The following ARC/INFO export coverages are included in whitelakeGIS.zip: The geo_net.aat INFO file consists of the following item: LTYPE--Refers to the type of arc and is one of the following: Contact, Shoreline, or Map Boundary or Null. Null is a line dividing bodies of water. geo_net--map unit polygons and open water; lines that are geologic contacts and shorelines. geo_pnt is a point coverage indicating the location of a Pleistocene volcanic tephra locality. The geo_pnt.pat INFO file consists of the items: PTYPE is defined as the type of tephra and contains the value TEPHRA LOCALITY--Pearlette family, undifferentiated. geo_lin is a line coverage indicating linear features. The geo_lin.aat INFO file contains only the item LTYPE that contains the value BEACH AND DUNE RIDGE, FAULT, FAULT--Inferred, or FAULT--Not further identified. hydr_lin is a line coverage created after scanning and vectorizing the hydrographic from the stable-base mylar from the paper map. It as no self-defined attributes. topo_lin is a line coverage created after scanning and vectorizing the the stable-base mylar from the original paper map. It has no user-defined attributes. bnd_lin is a line coverage created from 1:2,000,000-scale State Boundaries of the United States coverage from the National Atlas of the United States. bnd_lin.aat INFO file consists of the following item: LTYPE--Refers to the type type of arc and is one of the following: State Boundary or Map Boundary. It is annotated with State names. bnd_poly is a polygon coverage created from 1:2,000,000-scale County Boundaries of the United States, 2001 coverage from the National Atlas of the United States. All user-defined items were removed except State (ST) and county (CNTYNAME) names. rd_lin is a line coverage created from the 1:2,000,000-scale Major Roads of the United States coverage of the National Atlas of the United States. All user-defined attributes have been stripped from the lines except FEATURE (describing road type), NAME (describing highway numbers), and STATE. rr_lin is a line coverage created from 1:2,000,000-scale Railroads of the United States coverage from the National Atlas of the United States. It has no user-defined attributes. grid_lin is a line coverage created to display projection lines in one degree increments. It has no user-defined attributes >plotfile.pdf--pdf plot file of the digitized map >ash.mrk--marker set for use in the whitelake.aml >color524.shd-shadeset for use in the whitelake.aml >color.key >mapbar.aml--a routine to draw a scale bar for any specified scale >whitelake.aml--a routine to create a graphic illustration of the digital database of the White Lake quadrangle >whitelake.met--an ASCII file of FGDC formal metadata Included in whitelakeIMG.zip: I-1420_nh-15_correlation.pdf--A scan of the diagram showing correlation of map units I-1420_nh-15_deltas.pdf--a scan of the diagram showing ancestral and present deltas of the Mississippi River, Louisiana I-1420_nh-15_index.pdf--An index map showing location of Quaternary Geologic Atlas of the U.S. quadrangles I-1420_nh-15_loess.pdf--Loess distribution and thickness, in meters I-1420_nh-15_map.pdf--A scan of the original published paper map I-1420_nh-15_plotfile.pdf--A plot of the digital files containing map units, glacial features,hydrology,topography, State boundaries, and list of map symbols I-1420_nh-15_responsibility.pdf--A scan of the illustration of compilation responsibilities shown on the paper map I-1420_nh-15_textonly.doc--Text description of map units, figure captions, and sources of information used in preparing the original map INSTRUCTIONS AND DOCUMENTATION FOR U.S. GEOLOGICAL SURVEY MISCELLANEOUS INVESTIGATIONS MAP I-1420 (NH-15) To access the data: The data files can be downloaded via the web from: http://pubs.usgs.gov/imap/i-1420/nh-15/ The main product is a Portable Document Format (.pdf) map, which requires Adobe Acrobat for viewing. Acrobat software runs on a variety of systems, and is available for download free of charge from Adobe at http://www.adobe.com.