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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 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

OFR 1993-08

Evaluation of the Economic Mineral Potential in the Andrew Lake-Charles Lake Area of Northeast Alberta

The Alberta Geological Survey (AGS) assessed 88 mineral occurrences in the Andrew Lake Charles Lake area of northeastern Alberta as part of the Canada-Alberta Partnership Agreement on Mineral Development. A complete database has been gathered which ... Show Abstract

Langenberg, C.W.  Salat, H.  Turner, A.  Eccles, D.R.  1993-01-01

OFR 1994-05

Mineral Occurrences of the Selwyn and Leland Lakes Areas, Northeast Alberta

The Selwyn lake area is underlain by granite gneisses of Archean age, which include two separate belts of high grade metasediments. To the east of the area and parallel to Selwyn Lake, the granite gneisses are affected by mylonitization.Massive ... Show Abstract

Langenberg, C.W.  Salat, H.P.  Eccles, D.R.  1994-01-01