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TitleGeneralized geology of the world: age and rock type domains, and major fault zones
AuthorChorlton, L B; Hillary, E M
SourceExploration07 Exploration in the New Millenium, abstracts; 2007, 1 pages
Year2007
Alt SeriesEarth Sciences Sector, Contribution Series 20070335
PublisherCanadian Association of Mining Equipment and Services for Export (CAMESE)
MeetingExploration07 Exploration in the New Millenium; 5th Decennial International Conference; Toronto; CA; September 9-12, 2007
Documentbook
Lang.English
Mediaon-line; digital
ProvinceBritish Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
Areaworld
Lat/Long WENS-180.0000 180.0000 90.0000 -90.0000
Subjectsstructural geology; stratigraphy; economic geology; bedrock geology; structural features; mineral deposits; Proterozoic; Phanerozoic; Paleozoic; Mesozoic; Cenozoic
AbstractThis global data set represents geological bedrock map-based information about the evolution of the earth's crust, generalized for the 1:35 million paper scale, which was produced to compliment global mineral deposit databases compiled under the World Minerals Geoscience Database Project (1998-2003: http://gsc.nrcan.gc.ca/wmgdb/). The data was derived mainly from geological compilation maps of between 1:2 million and 1:5 million paper scales, supplemented in some areas by information from regional thematic maps and geological literature. The database was designed to house the most significant parameters which could be captured from these sources. Attributes include the original rock unit or fault codes if available, exposure onshore or offshore, start and end ages, lithological components in three levels of detail, generalized fault displacements, names, and tectonic setting. Emphasis was placed on completing onshore age and top level lithology information worldwide, and subsequently on entering second tier magmatic composition information so that easy-to-use mafic and/or ultramafic and the felsic and/or intermediate magmatic thematic data sets could be produced. Other lithological or fault details, and tectonic setting information, as well as names, were added in areas for which the information was easy to obtain in order to test the adequacy of the data model and terminology decisions.

This data set is spatially inaccurate. The accuracy of many of the map data sources may be poor, and therefore intricate detail from relatively accurate sources was deliberately removed for the sake of consistency. The visualization scale was intended for 1:20 million to 1:40 million paper maps and for the Internet. In addition, the level of generalization was kept high so that views of global extent could be displayed on computer screens.

The true purpose of this data set was to develop a working prototypical spatial data and descriptive attribute framework for global bedrock geology and major fault/deformation zones from which useful thematic data sets could be derived (for display with mineral deposits), and against which ad hoc queries could be posed. Simplified thematic choropleth maps that have been derived from this data set are Age and Rock Type Domains; Mafic and/or Ultramafic Magmatic Domains Subdivided by Age; Felsic and/or Intermediate Magmatic Domains Subdivided by Age; Precambrian Age and Rock Type Domains; and Major Faults This poster was created using the Age and Rock Type Domain and Major Fault themes.
GEOSCAN ID224379