|Title||Geology of the Doris North gold deposits, northern Hope Bay volcanic belt, SlaveStructural Province, Nunavut|
|Author||Carpenter, R L; Sherlock, R L; Quang, C; Kleespies, P; McLeod, R|
|Source||Geological Survey of Canada, Current Research (Online) no. 2003-C6, 2003, 10 pages, https://doi.org/10.4095/214188 (Open Access)|
|Publisher||Natural Resources Canada|
|Media||on-line; digital; CD-ROM|
|Related||This publication is contained in the following
|Lat/Long WENS||-107.0000 -106.5000 68.2500 67.7500|
|Subjects||regional geology; economic geology; gold; mineralization; mafic volcanic rocks; volcanic rocks; igneous rocks; quartz veins; structural features; folds; Archean; greenstone belts; basalts; dykes;
gabbros; Hope Bay Volcanic Belt; Doris Suite; timing; Precambrian|
|Illustrations||sketch maps; photographs|
|Released||2003 03 14|
|Abstract||Gold mineralization at Doris North is hosted in a conformable succession of mafic volcanic and gabbroic rocks that are folded into a tight, shallowly north-plunging antiform. Mineralization is
invariably hosted in continuous white quartz veins displaying semiregular sericite and tourmaline-rich septa.Ahydrothermal alteration assemblage of iron dolomite, sericite, paragonite, and pyrite overprints mafic volcanic|
and gabbroic host rocks.
Three significant, north-trending vein systems are known: West Valley Wall, Central, and Lakeshore veins. The Hinge zone occurs where the Central and Lakeshore veins merge. The overall geometry of the vein systems closely mimics the regional
antiformal fold geometry in basaltic and gabbroic rocks. Textural relationships are consistent with vein emplacement along structural weaknesses created by pre-existing or developing fold structures.