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BUL 045

Polyphase Deformation in the Canadian Shield of Northeastern Alberta

Two generations of structures can be distinguished in the granite gneisses and intercalated high-grade metasediments of the basement neiss complex, which has been shown to be Archean by radiometry dating. In some areas, D2 folds form parts of domes ... Show Abstract

Langenberg, C.W.  1983-01-01

BUL 056

Deformed Lower Cretaceous coal-bearing strata of the Grande Cache area, Alberta

The Lower Cretaceous Luscar Group includes a thin basal conglomerate (Cadomin Formation), a predominantly non marine sandstone and shale unit that locally contains coal (Gladstone Formation), a shallow marine shale and sandstone unit (Moosebar ... Show Abstract

Langenberg, C.W.  Kalkreuth, W.D.  Wrightson, C.B.  1987-01-01

BUL 042

Polyphase Metamorphism in the Canadian Shield of Northeastern Alberta

During the Archean metamorphic cycle, metasediments were metamorphosed under high pressure granulite conditions (M1). Coexisting garnet-biotite and garnet-cordierite pairs in the metasediments allows estimation of P-T conditions during the ... Show Abstract

Langenberg, C.W.  Nielsen, P.A.  1982-01-01

BUL 064

Metallic Mineral Occurrences of the Exposed Precambrian Shield in Northeastern Alberta

Metallic Mineral Occurrences of the Exposed Precambrian Shield in Northeastern Alberta The description of 190 metallic mineral occurrences on the exposed Precambrian Shield of northeast Alberta provides models for mineral deposition, establishes ... Show Abstract

Langenberg, C.W.  Eccles, D.R.  1996-03-01