|Titre||Relationship of structural lineaments and mineral occurrences in the Abitibi area of the Canadian Shield|
|Licence||Veuillez noter que la Licence du gouvernement
ouvert - Canada remplace toutes les licences antérieures.|
|Auteur||Kutina, J; Fabbri, A G|
|Source||Commission géologique du Canada, Études no. 71-9, 1972, 36p. (6 feuilles), https://doi.org/10.4095/102464 Accès ouvert|
|Éditeur||Commission géologique du Canada|
|Document||publication en série|
|Cartes||Cette publication contient 8 cartes|
|Info. carte||géologique, 1/500,000|
|Info. carte||géologique, 1/1,013,760|
|Info. carte||géologique, 1/253,440|
|Media||papier; en ligne; numérique|
|SNRC||31M; 31N; 32C; 32D; 41O; 41P; 42A; 42B|
|Lat/Long OENS|| -84.0000 -76.0000 49.0000 47.0000|
|Sujets||arsenic; cobalt; cuivre; or; fer; plomb; molybdène; nickel; production; pyrite; réserves; argent; uranium; zinc; Faille de Beauchastel ; Faille de Blanche River ; Faille de Cadillac-Bouzan ; Faille de
Cross Lake ; Faille de Destor-Porcupine ; Faille d'Horne Creek ; Faille d'Hunter Creek ; Faille de Lake Timiskaming W Shore ; Faille de Montreal River ; Faille de Pipestone ; Faille de Quesabe ; Faille de Quinze Dam ; géologie économique; minéraux
industriels; minéraux métalliques; géologie structurale|
|Diffusé||1972 01 01; 2015 08 06|
|Résumé||(disponible en anglais seulement)|
The Abitibi and of the Canadian Shield, located between 76° and 84 ° W and 47 ° 30' and 49• N in Ontario and between 48° and 49° N in Quebec, was studied in
context with the structural geology of a considerable part of the Canadian Shield.
Comparison of lineaments in very distant are as of the Canadian Shield suggests that the Shield structure is strongly influence d by one prominent pattern of
deep-seated fractures. A spacing of 100 miles between the cast west lineaments of the Canadian Arctic is recognizable also in the drainage pat tern east of James Bay and is reflected in the Abitibi area. It is compatible with a set of east-west
trending major fractures by J. Kalliokoski as bounding crustal blocks with cores of granitic rocks. The two schemes have been derived in different ways and fully independently of each other.
The spacing between the Hudson Bay Paleolineame nt
- a significant geofracture of the Canadian Shield - and the Mattagami River Lineament was used as the unit interval in the north-south set of fracture -trajectories of the prospecting net for the Superior Provinces south of Hudson Bay. The
corresponding unit interval in the eastern part of this area is smaller. Fifteen comparable intersections have been postulate d. Endogenous ore deposits are known to occur a long seven of them and the remaining eight are recommended for prospecting.
In the Abitibi area intersecting fractures of these sets are present and the distribution of gold and copper deposits coincides with them. The ore deposits are clustered at or near the intersect ions of major fractures (Noranda, Kirk land
Lake , Matachewan and Timmins-Porcupine deposit clusters). Several recommendations for prospecting can be deduced from the relationship of the fracture pattern and the distribution of about 1,300 gold and about 700 copper occurrences of the area.
Sorne recommendations are presented in this paper.
With respect to the individual ore districts, the relationship of ore deposits to volcanic centres, as outlined in 1967 by Wilson is emphasized. The large-scale deep-seated fractures may
control the general distribution of volcanic centres and the associated ore deposition and this possibility should be tested.