The following is a brief description of the data layers, tables, and their associated attributes that are used in this report. GEOLOGIC DATA: ASECTION - Line and polygon data for the A-A' cross section ASECTION.AAT items: PLOTCODE - Used for plotting TYPE - Used to identify faults ASECTION.PAT items: PLOTCODE - Used for plotting MAPUNIT - Geologic map unit code BEDROCK - Polygon data layer of bedrock geologic map units BEDROCK.PAT items: MAPUNIT - Bedrock geologic map unit code BSECTION - Line and polygon data for the B-B' cross section BSECTION.AAT items: PLOTCODE - Used for plotting TYPE - Used to identify faults BSECTION.PAT items: PLOTCODE - Used for plotting MAPUNIT - Geologic map unit code META - Used to identify thermally metamorphosed rocks. Set to 'JTrtm'. FAULT - Line data layer of geologic faults FAULT.AAT items: TYPE - Type of fault TYPE Code Description N Normal T Thrust NT Normal reactivated as thrust OT Overturned thrust SS Strike-slip ARO Arrow showing movement along strike-slip fault U Unclassified CODE - Identifies fault segments which are overlaid by surficial deposits (CODE = 2). Used for plotting. LAKEBED - Line data layer of lakebed locations LAKEBED.AAT items: TYPE - Set to 'Lakebed' LINES - Line data layer of geologic cross sections LINES.AAT items: XLINE - Identifies cross section, set to "A-A'" or "B-B'" META - Polygon data layer of thermally metamorphosed rocks META.PAT items: MAPUNIT - Geologic map unit code. Set to 'JTrtm'. NEAT - Unattributed line data layer of map neatline SINK - Point data layer of sinkhole locations SINK.PAT items: MAPUNIT - Set to 'Sinkhole' STRUCTURE - Point data layer of geologic structure STRUCTURE.PAT items: DIP - Dip value (planar data) or plunge value (linear data) AZIMUTH - Angle measured from North in right-hand rule (planar data). TYPE - Type of geologic structure TYPE Code Description AGE Sample site for U-Pb isotopic technique for age date HB Horizontal bed I1C Inclined first-generation Paleozoic cleavage and (or) schistosity I2C Inclined second-generation Paleozoic cleavage and (or) schistosity IB Inclined bed IF Inclined Middle Proterozoic foliation MA Minor antiform MPF Inclined mylonitic and phyllonitic foliations OB Overturned bed QM Quarry or mine RAD Greater than 200 pCi/L of soil gas radon V1C Vertical first-generation Paleozoic cleavage and (or) schistosity V2C Vertical second-generation Paleozoic cleavage and (or) schistosity VB Vertical bed VF Vertical Middle Proterozoic foliation SUB_TYPE - Type of quarry mine SUB_TYPE Code Description Au Gold C Chromite Cu Copper D Diabase F Hematite, limonite, and iron-ore L Limestone M Marble S Building stone Zn Zinc SYMBOL_ANG - Standard Cartesian angle measured from East. Used for plotting. DIPDIR - Direction of dip (planar data) or trend (linear data) measured from North SYMBOL - Symbol number, used for plotting SURFICIAL - Polygon data layer of surficial geologic map units SURFICIAL.PAT items: MAPUNIT - Surficial geologic map unit code ZMD_DIKE - Line and polygon data layer of Zmd dikes ZMD_DIKE.AAT items: TYPE - Set to 'Zmd' ZMD_DIKE.PAT items: MAPUNIT - Set to 'Zmd' 02437 - Geologic database If you are using Arc/Info Workstation you can access the data in this table using either the JOINITEM, RELATE, or CURSOR functions and the INFO item MAPUNIT. Use the RELATE function to access this data from ArcMap. If you are using ArcView, add the table 02437.DBF to the project and use either the JOIN or LINK functions and the item MAPUNIT to access the data. Alternatively, the database 02437.MDB can be viewed using Microsoft Access. 02437 items: MAPUNIT - Geologic map unit code SURF_BED SURFTYPE LITHPRI LITHSEC LITHTER FORM MEMBER GROUP SUPERGROUP ROCKCLASS AGE GEOCHR GEOCHRTECH GEOCHRREF FOSSIL FOSSILTYPE FOSSILREF CORRELEXTR ORIGIN RES RESREF COLOR MINPRI MINSEC MINOTH CLASTPRI CLASTSEC CEMENT THICKAPPRX THICKRANGE BEDTHIN BEDMEDIUM BEDTHICK CONTUP CONTLOW FOLPRI FOLSEC FOLTER CMPM RMPM RMRM DEFORMAGE DEFORMTECH DEFORMREF COMMENTS BASE DATA: HYDRO - Line and polygon data layer of hydrographic features HYDRO.AAT items: ENTITY_LABEL - DLG code ENTITY_DEF - Short definition of the DLG code contained in ENTITY_LABEL BANK - Defines the right (R) and left (L) limits of a double-line feature when facing downstream INTERMITTENT - Defines any hydrographic feature which flows intermittently COINCIDENT - Identifies lines shared by two or more hydrographic features HYDRO.PAT items: ENTITY_LABEL - DLG code ENTITY_DEF - Short definition of the DLG code contained in ENTITY_LABEL ELEVATION - Water surface elevation, whole meters NLCD - Raster land cover data set NLCD.VAT items: VALUE - Land cover code VALUE Code Description 11 Open water 21 Low intensity residential 22 High intensity residential 23 Commercial/Industrial/Transportation 32 Quarries/Strip mines/Gravel pits 33 Transitional 41 Deciduous forest 42 Evergreen forest 43 Mixed forest 81 Pasture/Hay 82 Row crops 85 Urban/Recreational grasses 91 Woody wetlands 92 Emergent herbaceous wetlands COUNT - Total number of cells belonging to each value code SYMBOL - Symbol number, used for plotting POLBND - Line and polygon data layer of state and county boundaries: POLBND.AAT items: POLBND-ID TYPE - State or county boundary POLBND.PAT items: STATE_NAME - State in which county resides CNTY_NAME - County name STATE_FIPS - State FIPS code (character field) CNTY_FIPS - County FIPS code (character field) FIPS - FIPS code for state/county (character field) MAJOR# - DLG code MINOR# - DLG code Major DLG Minor DLG Code Code Description 91 --- State FIPS code (integer field) 92 --- County FIPS code (integer field) ROADS - Line data layer of major highways ROADS.AAT items: MAJOR# - DLG code MINOR# - DLG code Major DLG Minor DLG Code Code Description 170 201 Primary route, class 1, undivided 170 203 Primary route, class 1, divided 170 205 Secondary route, class 2, undivided 170 207 Secondary route, class 2, divided 170 209 Road or street, class 3 170 402 Cloverleaf or interchange 172 --- Interstate route number 173 --- U.S. route number 174 --- State route number TOPO - Line data layer of elevation contours TOPO.AAT items: MAJOR# - DLG code MINOR# - DLG code Major DLG Minor DLG Code Code Description 20 20O Contour (index or intermediate) 20 201 Carrying contour 20 204 Amended contour 20 208 Closure line 20 611 Depression 24 --- Elevation in whole meters TYPE - Type of contour: index (Index) or intermediate (Inter), used for plotting
The geologic map and database are intended for application to land use decisions, soil mapping, groundwater availability and quality, aggregate resources, and engineering and environmental studies. For site specific studies, the detailed 1:24,000-scale geologic maps should be consulted.
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Use_Constraints:Although all data released in this report 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. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product or process disclosed in this report, and represents that its use would not infringe privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data or related materials. Reference therein to any specific commercial product, process, or related 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.
|Data format:||Bedrock and surficial geologic map units, geologic cross sections, faults, structural geology, political boundaries, elevation contours, hydrology and major highways. in format ARCE (version 8.1.2) Size: 35|