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TitleProposals for time classification and correlation of precambrian rocks and events in Canada and adjacent areas of the Canadian Shield. part 3: a precambrian time chart for the Geological Survey Atlas of Canada
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorOkulitch, A V
SourceGeological Survey of Canada, Paper 87-23, 1988, 20 pages, https://doi.org/10.4095/126091 Open Access logo Open Access
Year1988
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceNew Brunswick; Nova Scotia; Prince Edward Island; Quebec; Ontario; Manitoba; Saskatchewan; Alberta; British Columbia; Yukon; Northwest Territories; Northern offshore region; Eastern offshore region; Western offshore region; Canada; Newfoundland and Labrador
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; 67; 66; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 85; 84; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114; 115; 116; 117; 120; 340; 560
AreaCanadian Shield
Lat/Long WENS-141.0000 -50.0000 90.0000 41.7500
Subjectsgeneral geology; geological time scale; archean; helikian; hadrynian; Precambrian; Proterozoic
Released1988 05 01; 2016 02 02
AbstractThe third part of the debate about time classification and correlation of Precambrian rocks and events in Canada continues with discussion of the fundamental philosophies of geological time scales, assessments of previous proposals and the description of a chart with three scales. This chart is intended for use in the Geological Atlas of Canada. The chart includes a chronometric scale for international correlation and reference to isotopic ages, the chronometric/chronolithic hybrid scale proposed for the Decade of North American Geology publications, and a modified (primarily chronolithic) version of Stockwell's chrono-orogenic scale which appeared in the first part of this debate. Participants in the Geological Atlas program may utilize whichever scale they prefer, however at present, use of the third scale is encouraged to provide a uniform format for Atlas maps and charts. In making the third scale, the modifications proposed to Stockwell 's scale are the addition of uncertainties to boundary positions derived from assessment of defining data, a change in emphasis from chrono-orogenic to chronolithic definitions while retaining, in most instances, both boundary positions and original defining data, and minor changes in nomenclature.
GEOSCAN ID126091

 
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