Dwight C. Bradley, John D. Horton, Holly Motts, and Cliff D. Taylor
2015
Geological Structures - Strike and Dip in Mauritania, West Africa
vector digital data
Denver, CO
U.S. Geological Survey
http://dx.doi.org/10.3133/ofr20131280Taylor, Cliff D., ed.2015Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II) phase VPDFs, Digital Maps, Excel tablesU.S. Geological Survey Open-File ReportOF 2013-1280Denver, ColoradoU.S. Geological Surveyhttp://pubs.usgs.gov/of/2013/1280/
Points representing stike/dip measurements of geologic structual features (bedding, cleavage, fold axis, foliation, lineation, paleocurrents, and veins) in the Islamic Republic of Mauritania (IRM), Africa.
Created for the "Second Projet de Renforcement Institutionnel du Secteur Minier (PRISM II)" co-financed by the Government of Mauritania and the World Bank (Credit No. IDA-38100 MAU). This data was used in the creation of the map: Geologic Structure Map of Mauritania. Strike and dip measurements are essential to understand the attitude of geological features and structures in Mauritania.
2013
None planned
-16.179382
-6.728643
25.988126
14.704174
None
strike
dip
structure
None
Africa
Mauritania
None
Data have been checked to ensure the accuracy of the data. If any errors are detected, please notify the originating office. The U.S. Geological Survey strongly recommends that careful attention be paid to the metadata file associated with these data. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcGIS and ERDAS Imagine formats, this metadata file may include some terminology specific to those software packages.
This digital database is not meant to be used or displayed at any scale larger than 1:1,000,000.
John Horton
U.S. Geological Survey
GIS Analyst
mailing and physical address
Denver Federal Center, PO Box 25046, MS-973
Denver
CO
80228
303-236-1921
jhorton@usgs.gov
Dwight C. Bradley, John D. Horton, Holly Motts, and Cliff D. Taylor
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.4.4000
Attribute accuracy is dependent on the original data received from the Government of Mauritania (Ministere du Petrole, de I'Energies et des Mines) originally created for the Second Projet de Renforcement Institutionnel du Secteur Minier (PRISM I). New attributes and the original attributes have been modified by authors. Frequency and summary statistics were performed on attribute fields to check for inconsistencies.
Points were symbolized with appropriate structural symbols to check the rotation angles for symbology. These were checked against published printed maps of the areas to ensure rotation of symbols were as consistent and correct as possible.
Complete
The horizontal positional accuracy of the points may vary depending on the accuracy of the original datasets received from the Government of Mauritania (Ministere du Petrole, de I'Energies et des Mines) originally created for the Second Projet de Renforcement Institutionnel du Secteur Minier (PRISM I). The points in the Northern portion of the map were digitized from published 1:200,000 and 1:500,000 scale geologic maps from the British Geological Survey and/or Bureau de Recherches Geologiques et Minieres.
The data was provided by the Government of Mauritania (Ministere du Petrole, de I'Energies et des Mines) originally created for the Second Projet de Renforcement Institutionnel du Secteur Minier (PRISM I). The original data consisted of 32 files representing each 1:200K geologic map sheet. These files were normalized and combined for this new dataset. The points in the Northern portion of the map were digitized from published 1:200,000 scale geologic maps from the British Geological Survey and/or Bureau de Recherches Geologiques et Minieres because we did not receive any original strike/dip data in this area.
2012
John Horton
U.S. Geological Survey
GIS Analyst
mailing and physical address
Denver Federal Center, PO Box 25046
MS 973
Denver
CO
80228
303-236-1921
jhorton@usgs.gov
Vector
Entity point
9582
Transverse Mercator
0.9996
-11.0
0.0
0.0
0.0
coordinate pair
0.6096
0.6096
meters
WGS 1984
WGS_1984
6378137
298.257224
Attribute Table
Table containing attribute information associated with the data set.
Authors
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
DESC_FRA
Description of feature in French.
Authors
User defined
DESC_ENG
Description of feature in English.
Authors
User defined
ROTATE
Represents the strike of the feature. This field may have modified the original data in order to display the symbol correctly in ArcMap.
Authors
-269
360
Degrees.
PENDAGE
The dip of the feature.
Authors
0
90
Degrees.
VISIBLE
Author added value used for symbology. Y to display point, N to hide point. Primarily used to de-clutter the symbols on the 1:1 million scale map.
Authors
Y
Yes
Authors
N
No
Authors
YN
Maybe
Authors
Filon_type
Vein type. Used in original data from Mauritania.
Authors
User defined
Age
Age of feature. Used in original data from Mauritania.
Authors
User defined
Méthode
Age dating method. Used in original data from Mauritania.
Authors
User defined
Géochimie
Used in original data from Mauritania (unknown description of values).
Authors
User defined
Lame_mince
Used in original data from Mauritania (unknown description of values).
Authors
User defined
Paléonto
Used in original data from Mauritania (unknown description of values).
Authors
User defined
Pétrophys
Used in original data from Mauritania (unknown description of values).
Authors
User defined
POINT_X
Longitude of point.
ESRI
-519238.885589
427984.7607
meters
POINT_Y
Latitude of point.
ESRI
1631158.0344
2874368.88423
meters
U.S. Geological Survey
mailing address
USGS Information Services
Denver
CO
80225-0046
Box 25286Denver Federal Center
1-888-ASK-USGS (1-888-275-8747)
http://ask.usgs.gov
Downloadable Data
This database, identified as OF 2013-1280, has been approved for release and publication by the U.S. Geological Survey. 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 U.S. 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 (USGS), no warranty, expressed or implied 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 any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described and/or contained herein.
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 must be secured from the copyright owner.
Shapefilehttp://dx.doi.org/10.3133/ofr20131280http://pubs.usgs.gov/of/2013/1280/None
20150720
John Horton
U.S. Geological Survey
GIS Analyst
mailing and physical address
Denver Federal Center, PO Box 25046
MS 973
Denver
CO
80228
303-236-1921
jhorton@usgs.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time