| Title | Polyphase glacial dynamics and clast dispersal patterns in glaciofluvial and glacial sediments in north-central Quebec, with application to diamond exploration |
| Download | Download (whole publication) |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Parent, M |
| Source | Surficial geology of northern Canada: a summary of Geo-mapping for Energy and Minerals program contributions; by McMartin, I (ed.); Geological Survey of Canada, Bulletin 611, 2023 p. 201-219, https://doi.org/10.4095/331425  Open Access |
| Image |  |
| Year | 2023 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is contained in Surficial geology of
northern Canada: a summary of Geo-mapping for Energy and Minerals program contributions |
| File format | readme
|
| File format | pdf |
| Province | Quebec |
| NTS | 23M; 23N; 24C; 24D; 33N; 33O; 33P; 34A; 34B; 34C |
| Lat/Long WENS | -78.0000 -68.0000 57.0000 55.0000 |
| Subjects | Science and Technology; sedimentology; Nature and Environment; mineralogy; surficial geology/geomorphology; diamond; ice sheets; kimberlites |
| Illustrations | location maps; diagrams; graphs; charts; tables |
| Program | GEM2: Geo-mapping for Energy and Minerals GEM Synthesis |
| Released | 2023 02 16 |
| Abstract | The regional dynamics of shifting ice-flow directions and ice-divide migrations were estab-lished in the Saindon-Cambrien corridor of north-central Quebec by two independent means: 1) the measurement of
crosscutting striations; and 2) the glacial dispersal patterns of distinctive lithological markers from outliers of the Sakami Formation. Clasts from two outliers were successively dispersed to the north-northeast, northwest, and west-southwest. They
form composite dispersal trains consisting of 200 km long ribbon-shaped trains toward the west-southwest and palimpsest trains caused by the westward re-entrainment of dispersal trains formed during earlier flow phases. Widespread evidence of basal
sliding and abrasion recorded by striations associated with successive flow systems, together with the development of long dispersal trains, indicates that protracted warm-based conditions prevailed in north-central Quebec. This improved
understanding of glacial dynamics and dispersal in the core region of the eastern Laurentide Ice Sheet helps us to interpret the distribution of legacy kimberlite indicator mineral data sets in eskers and to assess the diamond prospectivity of the
Saindon-Cambrien corridor. |
| Summary | (Plain Language Summary, not published)
This study was conducted under phase 2 of TGI and its objective was to assess the prospectivity of this region (Saindon-Cambrien Corridor) for diamond
exploration. The prime reconnaissance method is to assess the presence of KIMs (kimberlite indicator minerals) in a loosely spaced set of glaciofluvial and glacial samples, kimberlite being the main rock type to potentially contain diamonds. This
method of exploration is the most effective one in glaciated Shield terrains of northern Canada. KIMs were recovered in this region of northern Québec and this prompted exploration firms to stake claims in areas of KIM clusters. This study also
provides a reconstruction of ice-flow history as well as dispersal patterns/models in glacial and glaciofluvial sediments of the region. Such ice-flow data and models constitute key information for any firm conducting mineral exploration projects in
Shield areas of northern Canada. This is particularly true in the case of diamond exploration surveys, as standard geochemical and geophysical methods are much less effective than KIMs in reconnaissance surveys. |
| GEOSCAN ID | 331425 |
|
|