A reconnaisance of organic maturation and petroleum source potential of Phanerozoic strata in northern Yukon and northwestern District of Mackenzie ...
The level of organic maturation, thermal history and petroleum source potential of Phanerozoic strata in northern Yukon and northwestern District of Mackenzie have been investigated by measurement of vitrinite (% Rorand) and graptolite (% Romax) reflectance, conodont alteration index (CAI) and Rock-...
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| Format: | Text |
| Language: | English |
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University of British Columbia
2010
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| Online Access: | https://dx.doi.org/10.14288/1.0052527 https://doi.library.ubc.ca/10.14288/1.0052527 |
| Summary: | The level of organic maturation, thermal history and petroleum source potential of Phanerozoic strata in northern Yukon and northwestern District of Mackenzie have been investigated by measurement of vitrinite (% Rorand) and graptolite (% Romax) reflectance, conodont alteration index (CAI) and Rock-Eval pyrolysis. The strata in general have lower maturity levels in southern Mackenzie Delta, Peel Plateau and Eagle Plain than in the Richardson and Ogilvie Mountains. The level of maturation varies from graptolite reflectance values of 4.0% to 6.5% Romax and CAI values of 3.5 to 5 in Upper Cambrian to Lower Devonian strata whereas vitrinite reflectance ranging from 0.2% to 3.75% Rorand occur in Middle Devonian to Upper Cretaceous strata. Time-averaged numerical modelling of measured maturation gradients (0.10 to 0.32 log Rorand/km) suggest paleogeothermal gradients on the order of 20 to 45°C/km in southern Mackenzie Delta and Peel Plateau, from 10 to 20°C/km in central Eagle Plain and from 20 to 45°C/km adjacent ... |
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