|Title||Report of activities for the assessment of kimberlite indicator mineral sources on northeastern Banks Island, Northwest Territories: GEM 2 Western Arctic Margins project|
|Author||Smith, I R|
|Source||Geological Survey of Canada, Open File 7972, 2015, 19 pages, https://doi.org/10.4095/297304 (Open Access)|
|Publisher||Natural Resources Canada|
|NTS||88C; 88F/02; 88F/03; 88F/04|
|Area||Banks Island; Passage Point|
|Lat/Long WENS||-120.0000 -115.0000 74.2500 73.0000|
|Subjects||surficial geology/geomorphology; economic geology; drift prospecting; indicator elements; glacial deposits; kimberlites; diamond; mineral potential; stream sediment samples; stream sediment
geochemistry; drift geochemistry; drift deposits; aeromagnetic surveys; aeromagnetic interpretation; indicator minerals; Cenozoic; Quaternary|
|Illustrations||location maps; photograhs|
|Program||Western Arctic Sverdrup Basin, GEM2: Geo-mapping for Energy and Minerals|
|Released||2015 11 20|
This report outlines the scope and objectives of the Banks Island kimberlite (diamond) indicator mineral studies project, and summarizes field work, sample collection, and data
compilation carried out between September 2014 and August 2015. The principal objective of this study is to assess the potential for a local diamond-bearing kimberlite(s) source on Banks Island by undertaking stream sediment and drift surveys,
geochemical and kimberlite indicator mineral (KIM) analyses, conducting field inspection of industry-derived aeromagnetic survey anomalies, applying significantly revised glacial history models for Banks Island to understanding drift origins and
dispersal, and compiling and assessing all available seismic shothole drillers' log records as a means of further assessing regional stratigraphy. This research is designed to provide the insight necessary for mineral exploration stakeholders to
either renew diamond exploration efforts in this area, or determine that Banks Island is not prospective for diamond-bearing kimberlites.
Fieldwork in July 2015 led to an improved understanding of the nature and distribution of glacial sediments
in areas of industry stream sediment sample KIM recovery. Fieldwork also identified areas of previously undocumented bedrock outcrops, including extensive unconsolidated, gravelly-sands of the Beaufort Formation (an Upper Tertiary fluvial deposit).
Samples of Beaufort Formation sands have been submitted for KIM processing to determine if they could be a potential source of inherited (Canadian Shield-origin) KIMs. Analytical results from KIM recovery and geochemical analysis being conducted this
fall/winter will be used to determine sampling strategies and follow up field research to be conducted in 2016.
|Summary||(Plain Language Summary, not published)|
This report summarizes digital data compilations and summer 2015 bedrock and sediment sample collections on Banks Island, Northwest Territories that are
designed to test for the presence of local diamond-bearing kimberlite bedrock. Final results will help support Industry's decision to either renew diamond exploration on Banks Island, or seek other more prospective areas.