USGS Geoscience Data Catalog
Additional USGS Geoscience data can be found by geographic location or by publication series.
Orndorff, Randall C., Harrison, Richard W., and Weary, David J., 1999, Geologic Map of the Eminence Quadrangle, Shannon County, Missouri: U.S. Geological Survey Miscellaneous Investigations Series Map I-2653, U.S. Geological Survey, Reston, Virginia.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Planar coordinates are encoded using Coordinate pair
Planar coordinates are specified in Meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is GRS 80.
The semi-major axis of the ellipsoid used is 6378137.0000000.
The flattening of the ellipsoid used is 1/298.26.
MapUnit = 1 to 4 character abbreviation of geologic unit name = unit is surficial or bedrock SurfType = type of surficial unit LithPri = primary lithology of unit LithSec = secondary lithology of unit LithTer = tertiary lithology of unit Form = formal Formation name Member = formal Member within a Formation Group = formal Group name Super Group = formal Supergroup name RockClass = major rock-type classification Age = era, age, epoch, etc. Geochr = geochron GeochrTech = technique for detemining geochron GeochrRef = geochron reference Fossil = yes/no fossils collected FossilType = type of fossil, phylum etc. FossilRef = fossil reference, e.g. a report CorrelExtr = correlation of unit is extrapolated or interpolated from other data Origin = author interpretation of environment of origin of unit = potential mineral resource Color =weathered color of rock as exposed in the map area MinPri = primary mineral in unit MinSec = secondary mineral in unit MinOth = other minerals found in unit ClastPri = primary clast(s) in unit ClastSec = secondary clast(s) in unit Cement = compositon of cement or matrix ThickApprx = approximate thickness of unit ThickRange = range of thickness of unit BedThin = there are thin beds within unit BedMedium = there are medium beds within unit BedThick = there are thick beds within unit ContUp = nature of upper contact ContLow = nature of lower contact FolPri = primary foliation FolSec = secondary foliation FolTer = tertiary foliation CMPM = contact metamorphic minerals RMPM = prograde regional metamorphic minerals RMRM = retrograde regional metamorphic minerals DeformAge = interpreted geoogic age and/or orogeny of deformation = isotopic technique used to date deformation DeformRef = reference to absolute or relative age of deformation Comments = additional information about unitUser defined items in data tables for line coverages of contacts
contactnature of geologic unit contact, may be frame, approximate, exposed, or concealed. Frame is arc along the quadrangle boundary.
703-648-6897 (voice)
dweary@usgs.gov
The purpose of this geologic map and database is to support and be part of a three-dimensional geologic framework study of south-central Missouri. The framework will be used to assess environmental impacts of lead and zinc mining in the Mark Twain National Forest on the hydrologic system of the Ozark National Scenic Riverways.
Person who carried out this activity:
703-648-6897 (voice)
dweary@usgs.gov
Attribute accuracy was tested by manually comparing hard copy plots of the digital data with the source materials. Authors as well as USGS map editors performed separate reviews.
The data were created by delineating the boundaries from stable overlays on a USGS 7.5 minute Topographic Map at 1:24000 scale. Therefore, the mapped horizontal accuracy is assumed to be within National Map Accuracy Standards, with a horizontal accuracy of 45.6 feet at the 95% confidence level. As with all things human, potential exists for error in location by the mapper in the field especially as all ground locations were plotted manually without aid of GPS, surveying, or other precision locating equipment.
The data were delineated off a USGS 7.5 minute topographic map at 1:24000 scale. Therefore, the vertical accuracy is assumed to be within National Map Accuracy Standards, with a vertical accuracy of 11.9 feet at the 95% confidence level. As with all things human, potential exists for error in location by the mapper in the field especially as all ground locations were plotted manually without aid of GPS, surveying, or other precision locating equipment. Measurement of some vertical positions (altitude) was aided by barometric altimeter readings, but with accuracy of only about plus or minus 20 feet. Most vertical positions are derived from the plotted horizontal position on the topographic base.
Geologic map units were collected and digitized at a resolution appropriate for portraying on a base of 1:24,000 scale.
No rigorous formal tests were performed. Polygon coverages were queried to screen for empty or inconsistent values. Line geometry is topologically clean.
Are there legal restrictions on access or use of the data?
- Access_Constraints: none
- Use_Constraints:
- Although all data and software released 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. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Govenment.
703-648-6897 (voice)
dweary@usgs.gov
USGS Miscellaneous Investigations Map I-2653
Users must assume responsibility to determine the appropriate use of these data. Please contact the USGS Eastern Earth Surface Processes Team for more detailed information.
Contact David Weary, USGS Eastern Earth Surface Processes Team, MS 926A, Reston, VA 20192 for CD-ROM copies or FTP access. will also be available online within the USGS website.
703-648-6533 (voice)
703-648-6252 (FAX)
pschweitzer@usgs.gov
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://geo-nsdi.er.usgs.gov/metadata/map-i/2653/metadata.faq.html
Page Contact Information: Peter Schweitzer
Page Last Modified: Thursday, 16-May-2013 16:06:25 EDT
