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TitlePreliminary report on the structural geology of the Clarence Stream - Moores Mills area, southwestern New Brunswick: implications for gold exploration
AuthorCastonguay, S; Watters, S; Ravenelle, J -F
SourceGeological Survey of Canada, Current Research (Online) no. 2003-D2, 2003, 10 pages, (Open Access)
PublisherNatural Resources Canada
Mediaon-line; digital; CD-ROM
RelatedThis publication is contained in the following publications
File formatpdf
ProvinceNew Brunswick
AreaClarence Stream; Moores Mills; 6
Lat/Long WENS-66.8833 -66.8667 45.4500 45.4333
Subjects3; structural geology; economic geology; structural features; shear zones; folds; deformation; structural analyses; structural controls; gold; mineralization; granites; intrusive rocks; St. Croix Terrane; Mascarene Belt; St. David Antiform; Sawyer Brook Fault; Cookson Group; Waweig Formation; Clarence Stream Deposit; Devonian; Paleozoic; Ordovician
Illustrationssketch maps; photographs; stereonets
ProgramTargeted Geoscience Initiative (TGI-1), 2000-2003
Released2003 03 14
AbstractSignificant gold occurrences located in proximity to Devonian granitoid intrusions have been recently discovered in the Clarence Stream area of southwestern New Brunswick. The area straddles the Ordovician St. Croix Terrane and Silurian Mascarene Belt, which are variously affected by four phases of regional deformation. The St. David antiform is interpreted as a megascopic F2-F3 fold-interference structure, the southeastern limb of which is cut by the late-D3, dextral Sawyer Brook Fault. Mineralized quartz veins and breccia units within the Ordovician Cookson Group are structurally associated with thrust-related D2 high-strain zones and folds. Southward, the occurrence of mineralized quartz veins in the Silurian Waweig Formation is influenced by the competency of gabbroic bodies, whereas late-D3 high-strain zones control their present geometry. The distinct lithostratigraphic assemblages and the nature and location of structures hosting the gold mineralization indicate that exploration strategies should not be restricted only to the proximity of specific intrusions or shear zones.