| Title | Geology of the Markham Bay-Crooks Inlet area, southern Baffin Island, Northwest Territories |
| Download | Download (whole publication) |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Scott, D J; St-Onge, M R; Wodicka, N ; Hanmer, S |
| Source | Canadian Shield/Bouclier Canadien; by Geological Survey of Canada; Geological Survey of Canada, Current Research no. 1997-C, 1997 p. 157-166, https://doi.org/10.4095/208641  Open Access |
| Year | 1997 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| Related | This publication is contained in Canadian shield
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| File format | pdf |
| Province | Nunavut |
| NTS | 25K/13; 25K/14; 25L/09; 25L/10; 25L/14; 25L/15; 25L/16; 25M; 25N |
| Area | Canadian Shield; Baffin Island; Kimmirut; Iqualuit; Frobisher Bay; Crooks Inlet; Markham Bay; Big Island |
| Lat/Long WENS | -72.0000 -68.0000 64.0000 62.5000 |
| Subjects | igneous and metamorphic petrology; stratigraphy; structural geology; gneisses; orthogneisses; metasedimentary rocks; metamorphic rocks; lithology; igneous rocks; marbles; quartzites; depositional
environment; plutonic rocks; monzo-granites; tectonostratigraphic zones; ultramafic rocks; pelites; sedimentary rocks; deformation; metamorphism; stratigraphic analyses; stratigraphic correlations; field relations; faults; faults, thrust; folds;
structural features; Lake Harbour Group; Blandford Bay assemblage; Cumberland batholith; Proterozoic |
| Illustrations | sketch maps; photographs |
| Released | 1997 02 01 |
| Abstract | Metasedimentary rocks and orthogneisses of the Markham Bay-Crooks Inlet area comprise folded and imbricated panels of a broadly south-verging thrust þ fold belt subsequently affected by orogen-parallel
folding and cross-folding. Two assemblages of supracrustal rocks have been identified: the more extensive shelf sequence comprises the marbles, psammites, and semipelites of the ca. 1.93-1.86 Ga Lake Harbour Group, the second is characterized by
thick successions of feldspathic quartzite and pelite, interpreted as a foreland basin sequence and intruded by layered ultramafic-mafic sills. Several types of orthogneiss have been recognized: 1) layered hornblende tonalite and monzogranite gneiss
imbricated with supracrustal units in the southern part of the area, and 2) orthopyroxene tonalite with diorite sheets in the central part of the area that is in part 1.84-1.82 Ga. The ca. 1.85 Ga Cumberland monzogranite batholith postdates earliest
imbrication, but is itself carried by youngest thrusts. |
| GEOSCAN ID | 208641 |
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