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Papers by John A Donaldson
Reef Development and Facies Geometry on a High-Energy Early Proterozoic Carbonate Shelf (Hornby Bay Group, Northwest Territories, Canada)
Geology of Aberdeen Lake map area, District of Keewatin: Preliminary Report
Stromatolite Reef Development on a Mud-Dominated Platform in the Middle Precambrian Belcher Group of Hudson Bay
Paleokarst breccias, calcretes, silcretes and fault talus breccias at the base of upper Proterozoic "Windermere" strata, northern Canadian Cordillera
In the Ogilvie Mountains, west-central Yukon, the upper Proterozoic lower Mount Harper group (inf... more In the Ogilvie Mountains, west-central Yukon, the upper Proterozoic lower Mount Harper group (informal name) is stratigraphically equivalent to basal Windermere Supergroup rocks that occur in other areas of the North American Cordillera. Breccias at the base of the lower Mount Harper group are of two different, but in part coeval, origins. A normal fault that was active during late Proterozoic time forms the southern boundary of the lower Mount Harper group and is genetically related to a wedge of paleotalus breccia that thins rapidly northward from the fault. A different breccia layer is preserved on a disconformity surface that separates lower Harper group strata from a thick succession of underlying dolostones. This disconformity breccia contains silcretes and calcretes that provide evidence of several episodes of subaerial exposure. Rare interbedded debris flows display features that suggest coincidence of the last exposure event with initiation of deposition of the Mount Harper...
Chapter 1 Precambrian Geology
Canadian Inland Seas
Publisher Summary Hudson Bay, James Bay, and Foxe Basin occupy depressions in the central part of... more Publisher Summary Hudson Bay, James Bay, and Foxe Basin occupy depressions in the central part of the Canadian Shield that constitutes the Precambrian crustal nucleus of North America. On the basis of structural style and radiometrically determined ages, the Canadian Shield is subdivided into seven distinctive tectonic provinces. The largest of these, the Superior and Churchill Provinces, surround and underlie Paleozoic and Mesozoic strata that occupy substantial areas beneath and adjacent to James Bay and Hudson Bay. The rocks of the Superior Province form much of the eastern shoreline of James Bay and Hudson Bay and those of the younger Churchill Province form the shorelines on sides of northern Hudson Bay, the northeastern shoreline of Southampton Island, and all of the Precambrian shoreline around Foxe Basin. The Belcher islands, Ottawa islands, and most other islands in the eastern part of Hudson Bay, as well as a few small near-0shore islands in Foxe Basin, belong to the Churchill Province.
Trace fossils and stratigraphy of the Precambrian-Cambrian boundary sequence, upper Harper group, Ogilvie Mountains, Yukon
The Sub - Thelon Formation Paleosol, Northwest Territories
Iron-formation and metalliferous sediments in central Canada [Field Trip 8]
Proterozoic Sedimentary Rocks of northern Saskatchewan (74n)
Geological Investigations of the Dubawnt Group, Northwest Territories
Report On Classification of Stromatolites
Marion Lake map - area, Quebec - Newfoundland
Géologie du Bouclier canadien
Sedimentology and Stratigraphy of the Thelon Formation and the Sub-Thelon Regolith
Iron - Formation in Temagami and Sherman Mine area
Sedimentological and Stratigraphic Study of the Hornby Bay and Coppermine River Groups, District of Mackenzie
Stromatolites in the Denault Formation, Marion Lake, Coast of Labrador, Newfoundland
Coppermine and Dismal lakes map area, District of Mackenzie
Stratigraphy of the Middle Proterozoic Gillespie Lake Group in the southern Wernecke Mountains, Yukon
Reef Development and Facies Geometry on a High-Energy Early Proterozoic Carbonate Shelf (Hornby Bay Group, Northwest Territories, Canada)
Geology of Aberdeen Lake map area, District of Keewatin: Preliminary Report
Stromatolite Reef Development on a Mud-Dominated Platform in the Middle Precambrian Belcher Group of Hudson Bay
Paleokarst breccias, calcretes, silcretes and fault talus breccias at the base of upper Proterozoic "Windermere" strata, northern Canadian Cordillera
In the Ogilvie Mountains, west-central Yukon, the upper Proterozoic lower Mount Harper group (inf... more In the Ogilvie Mountains, west-central Yukon, the upper Proterozoic lower Mount Harper group (informal name) is stratigraphically equivalent to basal Windermere Supergroup rocks that occur in other areas of the North American Cordillera. Breccias at the base of the lower Mount Harper group are of two different, but in part coeval, origins. A normal fault that was active during late Proterozoic time forms the southern boundary of the lower Mount Harper group and is genetically related to a wedge of paleotalus breccia that thins rapidly northward from the fault. A different breccia layer is preserved on a disconformity surface that separates lower Harper group strata from a thick succession of underlying dolostones. This disconformity breccia contains silcretes and calcretes that provide evidence of several episodes of subaerial exposure. Rare interbedded debris flows display features that suggest coincidence of the last exposure event with initiation of deposition of the Mount Harper...
Chapter 1 Precambrian Geology
Canadian Inland Seas
Publisher Summary Hudson Bay, James Bay, and Foxe Basin occupy depressions in the central part of... more Publisher Summary Hudson Bay, James Bay, and Foxe Basin occupy depressions in the central part of the Canadian Shield that constitutes the Precambrian crustal nucleus of North America. On the basis of structural style and radiometrically determined ages, the Canadian Shield is subdivided into seven distinctive tectonic provinces. The largest of these, the Superior and Churchill Provinces, surround and underlie Paleozoic and Mesozoic strata that occupy substantial areas beneath and adjacent to James Bay and Hudson Bay. The rocks of the Superior Province form much of the eastern shoreline of James Bay and Hudson Bay and those of the younger Churchill Province form the shorelines on sides of northern Hudson Bay, the northeastern shoreline of Southampton Island, and all of the Precambrian shoreline around Foxe Basin. The Belcher islands, Ottawa islands, and most other islands in the eastern part of Hudson Bay, as well as a few small near-0shore islands in Foxe Basin, belong to the Churchill Province.
Trace fossils and stratigraphy of the Precambrian-Cambrian boundary sequence, upper Harper group, Ogilvie Mountains, Yukon
The Sub - Thelon Formation Paleosol, Northwest Territories
Iron-formation and metalliferous sediments in central Canada [Field Trip 8]
Proterozoic Sedimentary Rocks of northern Saskatchewan (74n)
Geological Investigations of the Dubawnt Group, Northwest Territories
Report On Classification of Stromatolites
Marion Lake map - area, Quebec - Newfoundland
Géologie du Bouclier canadien
Sedimentology and Stratigraphy of the Thelon Formation and the Sub-Thelon Regolith
Iron - Formation in Temagami and Sherman Mine area
Sedimentological and Stratigraphic Study of the Hornby Bay and Coppermine River Groups, District of Mackenzie
Stromatolites in the Denault Formation, Marion Lake, Coast of Labrador, Newfoundland
Coppermine and Dismal lakes map area, District of Mackenzie
Stratigraphy of the Middle Proterozoic Gillespie Lake Group in the southern Wernecke Mountains, Yukon