U.S. GEOLOGICAL SURVEY DIGITAL DATA SERIES DDS-71 Surficial geologic maps along the riparian zone of the Animas River and its headwater tributaries, Silverton to Durango, Colorado, with upper Animas River watershed gradient profiles By Robert W. Blair, Jr.1, Douglas B. Yager2, and Stanley E. Church2 2002 1Department of Geology Fort Lewis College Durango, CO 81301 2U.S. Geological Survey Mineral Resources Team Box 25046, MS973 Denver, CO 80225 U.S. Department of the Interior Gale A. Norton, Secretary U.S. Geological Survey Charles G. Groat, Director Available from: USGS Information Services Box 25286, Building 810 Denver Federal Center Denver, CO 80225 Call: (303) 202-4200 For more information about the surficial geology along the Animas River watershed from Silverton to Durango, Colorado, please contact: Robert W. Blair Jr. (970)-247-7263 blair_r@fortlewis.edu Department of Geosciences Fort Lewis College 1000 Rim Drive Durango, CO 81301 or Douglas B. Yager dyager@usgs.gov (303)236-2487 USGS Mineral Resources Team Box 25046, MS973 Denver, CO 80225 or Stanley E. Church schurch@usgs.gov (303)236-1900 USGS Mineral Resources Team Box 25046, MS973 Denver, CO 80225 I. INTRODUCTION INTRODUCTION This U.S. Geological Survey Digital Data Series product consists of surficial geologic maps for the Animas River Watershed from its major headwater tributaries to Durango, Colo. This work was done in support of the U.S. Geological Survey's Abandoned Mine Lands Initiative in the San Juan Mountains, Colo. This study was undertaken to identify pre-mining and post-mining surficial deposits along the Animas River that will aid in determining the geochemical baseline in the watershed. The surficial geologic maps identify surficial deposits, such as floodplain, and terrace gravels, glacial till, talus, colluvium, landslides, and bogs. The post-mining (after 1860) fluvial deposits are confined to the modern floodplain and occasionally to the youngest terrace surface above the river channel. Sixteen primary units were mapped that included human-related deposits and structures, eight alluvial deposits, four colluvial deposits, one glacial deposit, one travertine deposit, and bedrock. Also included is a stream gradient profile map for major headwater tributaries to the Animas River in the upper part of the Animas River watershed. Gradients to the south of Snowdon Peak quadrangle were not done at this time because the 10-m digital elevation model source data used to compute the gradients for the upper Animas River watershed may not be sufficient to calculate more gradual changes in gradient observed near Durango, Colo.; future work may be done to evaluate this issue. Stream gradients are important to consider as they directly influence stream sediment transport and riparian habitat. This disk contains Portable Document Format (.pdf) files, which require Adobe Acrobat for viewing. Acrobat software runs on a variety of systems, and is available for download on this CDROM in the Acrobat5_Installers folder or free of charge from Adobe at http://www.adobe.com. II. DISCLAIMERS This Compact Disc-Read Only Memory(CD-ROM) publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Although all data and software published on this CD-ROM have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials. III. SYSTEM REQUIREMENTS Minimum System Requirements Windows based computer: A. Intel Pentium processor computer (486 minimum, Pentium or Pentium Pro recommended), with Microsoft Windows Me, Windows 2000, Windows NT 4.0 with Service Pack 5 or later Windows 98 Second Edition, or Windows 95 Service Release 2 (OSR2) 64 MB of RAM B. Macintosh computer: Power PC processor Mac OS 8.6 or later 64 MB of RAM IV. INSTRUCTIONS AND DOCUMENTATION FOR U.S. Geological Survey Digital Data Series DDS-71 A. To get started: Adobe Acrobat Reader version 4 or later is required to view the .pdf format maps and figures on this disk. Use of this CD-ROM requires the installation of Adobe Acrobat Reader Version 4.0 and higher. Acrobat Reader Installer 5 is included on this disc for Windows-based and Macintosh computers. Acrobat Reader software is described in more detail on the Adobe web site, http://www.adobe.com. Use the following steps to install the Adobe Acrobat reader Version 5.0.5 on a Windows-based computer. 1. Double-click on the Acrobat5_Installers folder. Help files and online manuals describe the software in detail. 2. Run the "rp505enu.exe" file. This executable file will launch an install wizard that will step you through installation of the Adobe Acrobat reader version 5.0.5. 3. Launch Acrobat Reader and open the DDS71_text.pdf file on the CD-ROM. 4. Hints for using Adobe Acrobat The Acrobat toolbar is located along the top of the Acrobat screen. Most of the icons in the tool bar are self-explanatory. The arrow icons move one page at a time. The bar-arrow icons go to the first or last page in the file. The double-arrow icon allows the user to go back and retrace previous views. Clicking on the colored text links to other relevant tables, or images. The cursor changes to a pointing finger when it passes over links. For example, the hand cursor, changes to a pointing finger, which indicates that it is over a link such as is the case when the hand icon hovers over a camera icon on the surficial geologic maps. The .pdf files contain several buttons to facilitate navigation within and between files. The left- and right-pointing red triangles advance the reader to previous or next pages in the .pdf file. The "Go Back" button, the left- pointing arrow in the tool bar, should be used to return to the previous view. This is especially useful for returning from images of surficial deposits to the previous map view. Several clicks on the "Go Back" button may be required since each panning or magnification change is considered a view by the Acrobat Reader software. The magnification glass button can be accessed in the tool bar at the top of the screen to zoom in or out. The Acrobat Reader software is described in more detail in the Online Guide that can be accessed once you open the Acrobat application. B. Contents The root directory contains the following files and folders: 1. DDS71_text.pdf--Contains a project summary and introduction and also contains a map index, which has dynamic links to all maps contained on this CD- ROM. 2. Figures_2-8--Contains .pdf format files of surficial deposit sampling sites and corresponding geochemical profiles. 3. Geologic_Maps--Contains .pdf format surficial geology map plates 1-10 with .pdf links to surficial deposit photographs located in a subfolder named Photos, and links to figures 2-8. 4. Gradient_map--Contains .pdf format file of a gradient map for the upper Animas River and its major headwater tributaries (plate 11), which contains color-coded stream reaches that show average stream gradients that are linked to stream gradient profiles located in the Gradients subfolder. 5. DDS71_508--Contains accessible .pdf format files of the 10 surficial geology map plates and the gradient map plate, in compliance with Section 508 of the Rehabilitation Act. 6. Coverages--Contains Arc Export Format and ArcView shape files for the surficial geologic map. 7. Metadata--Contains a metadata file for the surficial geologic mapping, with product ordering information. 8. Acrobat5_Installers--Contains files for installing Adobe Acrobat version 5. The folder name Figures_2-8 contains the following figures as .pdf files: figure_2.pdf figure_3.pdf figure_4.pdf figure_5.pdf figure_6.pdf figure_7.pdf figure_8.pdf The folder named Geologic_Maps contains surficial geologic maps (plates 1-10) as the following .pdf files: Ironton.pdf Handies_Peak.pdf Ophir.pdf Silverton.pdf Howardsville.pdf Snowdon_Peak.pdf Electra_Lake.pdf Mountain_View_Crest.pdf Hermosa.pdf Durango_East.pdf The subfolder Photos is part of the the Geologic_Maps folder and contains the following photographs of surficial deposits in .pdf format, which are linked from the locations on the surficial geologic maps where the photographs were taken. photo_01.pdf photo_02.pdf photo_03.pdf photo_04.pdf photo_05.pdf photo_06.pdf photo_07.pdf photo_08.pdf photo_09.pdf photo_10.pdf photo_11.pdf photo_12.pdf photo_13.pdf photo_14.pdf photo_15.pdf photo_16.pdf photo_17.pdf photo_18.pdf photo_19.pdf photo_20.pdf photo_21.pdf photo_22.pdf photo_23.pdf photo_24.pdf photo_25.pdf photo_26.pdf photo_27.pdf photo_28.pdf photo_29.pdf photo_30.pdf photo_31.pdf photo_32.pdf photo_33.pdf photo_34.pdf photo_35.pdf photo_36.pdf photo_37.pdf photo_38.pdf photo_39.pdf photo_40.pdf photo_41.pdf photo_42.pdf photo_43.pdf photo_44.pdf photo_45.pdf photo_46.pdf photo_47.pdf photo_48.pdf photo_49.pdf photo_50.pdf photo_51.pdf The Gradient_Map folder contains the following .pdf file: Gradient_Map.pdf The subfolder Gradients is part of the Gradient_Map folder and contains the following gradient profiles in .pdf format. The gradient profiles are linked to the corresponding stream segments on the surficial geologic maps. An_13.pdf An_14.pdf An_15.pdf An_16.pdf An_17.pdf An_18.pdf An_19.pdf An_20.pdf An_21.pdf An_22.pdf An_23.pdf An_24.pdf An_25.pdf An_26.pdf An_27.pdf An_28.pdf An_29.pdf An_30.pdf An_31.pdf An_32.pdf An_33.pdf An_34.pdf An_35.pdf An_36.pdf An_37.pdf An_38.pdf An_39.pdf An_40.pdf An_41.pdf An_42.pdf An_43.pdf An_44.pdf Cm_02.pdf Cm_45.pdf Cm_46.pdf Cm_47.pdf Cm_48.pdf Cm_49.pdf Cm_50.pdf Cm_51.pdf Cm_52.pdf Cm_53.pdf Cm_54.pdf Cm_55.pdf Cm_56.pdf Cm_57.pdf Cm_58.pdf Cm_59.pdf Cm_60.pdf Cm_61.pdf Cm_62.pdf Cm_63.pdf Cm_64.pdf Cm_87.pdf Cnhm_10.pdf Cnhm_11.pdf Cnhm_12.pdf Mdlfk_71.pdf Mdlfk_72.pdf Mdlfk_73.pdf Mn_06.pdf Mn_07.pdf Mn_08.pdf Mn_09.pdf Mn_74.pdf Mn_75.pdf Mn_76.pdf Mn_77.pdf Mn_78.pdf Mn_79.pdf Mn_80.pdf Mn_81.pdf Mn_82.pdf Mn_83.pdf Mn_84.pdf Mn_85.pdf Mn_86.pdf Soufk_65.pdf Soufk_66.pdf Soufk_67.pdf Soufk_68.pdf Soufk_69.pdf Soufk_70.pdf The folder DDS71_508 contains the following .pdf files DDS71_text_508.pdf plate1_508.pdf plate2_508.pdf plate3_508.pdf plate4_508.pdf plate5_508.pdf plate6_508.pdf plate7_508.pdf plate8_508.pdf plate9_508.pdf plate10_508.pdf plate11_508.pdf The folder called Coverages contains the following surficial deposit coverage in ARCINFO and in ARCVIEW shape file format: surf_dep.e00 surf_dep.shp surf_dep.shx surf_dep.dbf The folder Metadata contains the following metadata relating to the surficial deposit coverages in the Coverages folder: DDS-71.met The folder Acrobat_Acrobat contains files for installing Adobe Acrobat Reader version 5. The .pdf files are read by Acrobat Reader software.