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SPE 009

The Geological and Geochemical Setting of the Mid-Cretaceous Shaftesbury Formation and Other Colorado Group Sedimentary Units in Northern Alberta

Abstract: The geological setting of the mid-Cretaceous Shaftesbury Formation and other Colorado Group sedimentary rocks is similar to many productive metalliferous districts of the world, where formation or emplacement of mineral deposits is often partially controlled by one or more of coeval volcanism, extensional faults or fracture zones associated with regional fault systems and arches, and other structural zones that transect either the basement or overlying Phanerozoic cover rocks. A variety of minerals and metals, including diamonds in kimberlitic pyroclastics (e.g., Fort a la Corne area, Saskatchewan), and base and precious metal-bearing sulphidic horizons (e.g., McIvor River area, northern Alberta) have been found in the Shaftesbury Formation or its age equivalent rocks. During deposition of the Cretaceous Colorado Group sediments, and particularly during deposition of the Shaftesbury Formation, there was localized deposition of volcanic deposits from local centers in Alberta (e.g., Crowsnest Formation of southwest Alberta) and abundant bentonic horizons throughout the Shaftesbury Formation across much of Alberta. Therefore, because Shaftesbury Formation rocks display potential for hosting selected types of ore deposits (e.g., diamondiferous pyroclastics and diatremes; stratiform lead-zinc � precious metal-bearing shales; disseminated sediment-hosted gold; and volcanogenic massive sulphides), a rigorous geological/geochemical assessment is warranted. Place Keywords 73m 74d 74e 74l 74m 83m 83n 83o 83p 84a 84b 84c 84d 84e 84f 84g 84h 84i 84j 84k 84l 84m 84n 84o 84p Theme Keywords cretaceous geochemical surveys

Dufresne, M.B.  Eccles, D.R.  Leckie, D.A.  2001-06-01

GEO 1998-02

Diamond Indicator Minerals from Auger Core Holes, A Possible Second Dispersal Train in the Peerless Lake Map Area (84B)

Diamond Indicator Minerals from Auger Core Holes, A Possible Second Dispersal Train in the Peerless Lake Map Area (84B) The purpose of this report is to release information on the diamond indicator minerals recovered from a series of auger cores ... Show Abstract

Pawlowicz, J.G.  Dufresne, M.B.  Fenton, M.M.  1998-06-01

GEO 1998-01

Diamond Indicator Minerals from Till, Northern Alberta

Diamond Indicator Minerals from Till, Northern Alberta Regional till sampling for geochemistry and diamond indicator minerals has been ongoing in Alberta since 1992, initially as part of the Canada-Alberta Agreement on Mineral Development (MDA) ... Show Abstract

Pawlowicz, J.G.  Dufresne, M.B.  Fenton, M.M.  1998-05-01

ESR 2001-20

Alberta Kimberlite-Indicator Mineral Geochemical Compilation

Alberta Kimberlite-Indicator Mineral Geochemical Compilation Since the initial discovery of a kimberlitic diatreme in northern Alberta, government and exploration companies have collected a plethora of bedrock, till and stream-sediment ... Show Abstract

Eccles, D.R.  Dufresne, M.B.  Copeland, D.A.  Csanyi, W.  Creighton, S.  2003-02-01

OFR 1994-09

The Mineral Deposits Potential of the Marguerite River and Fort McKay Areas, Northeast Alberta (NTS 74E)

[...]a study of the till stratigraphy in the Bitumount area was undertaken. Radioactive occurrences in peraluminous megacrystic syenites to granitoids yield up to 3,000 counts per second with a SRAT SPP2N scintillometer, and assays of up to 350 ppm ... Show Abstract

Dufresne, M.B.  Henderson, B.A.  Fenton, M.M.  Pawlowicz, J.G.  Richardson, R.J.H.  1994-01-01

OFR 1994-10

The Diamond Potential of Alberta: A Regional Synthesis of the Structural and Stratigraphic Setting, and Other Preliminary Indications of Diamond Potential

The Diamond Potential of Alberta: A Regional Synthesis of the Structural and Stratigraphic Setting, and Other Preliminary Indications of Diamond Potential The primary objectives of this study were to identify favourable geological anomalies and ... Show Abstract

Dufresne, M.B.  Olson, R.A.  Schmitt, D.R.  McKinstry, B.  Eccles, D.R.  Fenton, M.M.  Pawlowicz, J.G.  Edwards, W.A.D.  Richardson, R.J.H.  1994-01-01

BUL 063

The Diamond Potential of Alberta

Diamonds have been discovered in surficial sediments west of Edmonton at locations near Evansburg and Hinton, in southern Alberta in the Sweetgrass Hills area, and in Cretaceous-Tertiary sediments southeast of Red Deer. There are numerous diamond ... Show Abstract

Dufresne, M.B.  Eccles, D.R.  McKinstry, B.  Schmitt, D.R.  Fenton, M.M.  Pawlowicz, J.G.  Edwards, W.A.D.  1996-01-01

DIG 2005-0532

Stream Sediment Geochemistry, Southern Alberta Rift (GIS data, point features)

Stream Sediment Geochemistry, Southern Alberta Rift (GIS data, point features) The data represent elemental analyses of 415 stream sediment samples collected from the study area in 1992. Ag, Cd, Cu, Pb, and Zn by atomic absorption; Ag, As, Au, Ba, ... Show Abstract

Olson, R.A.  Dufresne, M.B.  2011-07-19