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TitleGeology of McKendrick Lake map area, New Brunswick (21J/16)
AuthorAnderson, F D; Hobson, G D
SourceGeological Survey of Canada, Paper 69-12, 1970, 21 pages (2 sheets),
PublisherDepartment of Energy, Mines and Resources Canada
MapsPublication contains 1 map
Map Info.geological, 1:50,000
Mediapaper; on-line; digital
RelatedThis publication contains Anderson, F D; (1970). Geology, McKendrick Lake, New Brunswick, Geological Survey of Canada, Preliminary Map no. 14-1969
File formatpdf
ProvinceNew Brunswick
AreaMcKendrick Lake; Renous River; Miramichi River
Lat/Long WENS -66.5000 -66.0000 47.0000 46.7500
Subjectsregional geology; structural geology; stratigraphy; economic geology; geophysics; bedrock geology; lithology; metamorphic rocks; paragneisses; schists; phyllites; igneous rocks; volcanic rocks; intrusive rocks; granites; sedimentary rocks; slates; siltstones; greywackes; conglomerates; structural features; faults; folds; unconformities; geological history; tectonic history; deformation; glaciation; mineral occurrences; copper; galena; sphalerite; chalcopyrite; geophysical surveys; seismic surveys; sulphides; seismic surveys; Ludlovian; Wenlockian; Westphalian; fossils; Clifton Formation; Tetagouche Group; Appalachian System; Miramichi Highland; New Brunswick Lowland; Graptolites; Phanerozoic; Paleozoic; Carboniferous; Devonian; Silurian; Ordovician; Cambrian
Illustrationsgeological sketch maps; location maps; histograms; cross-sections
Released1970 01 01; 2016 09 12
AbstractMcKendrick Lake map-area lies in the northeastern part of the Appalachian Mountain system astride the Miramichi Highland and New Brunswick Lowland physiographic subdivisions.
The oldest rocks are Cambro-Ordovician paragneiss, schist and phyllite that occupy the core of a large northeast-trending anticlinorium. Minor structures in these rocks indicate
that they have undergone at least three stages of deformation.
Overlying the metamorphic rocks with apparent unconformity (in places the contact may be faulted) is a sequence of basic volcanic rocks and interbedded slate and siltstone. Graptolites from the siltstone have been identified as Upper Silurian (Lower Ludlovian) in age.
Slate, siltstone, greywacke and minor volcanic rocks form the bulk of the remaining deformed Paleozoic rock-units in the map-area. These units are contiguous to the south where they have been dated as Ordovician to Silurian in age.
Granitic rocks ranging in age from Ordovician to Devonian outcrop in the western part of the map- area.
Near horizontal Carboniferous strata unconformably overlie Ordovician and Silurian units. Fossil flora collected are correlative with the Pennsylvanian Clifton Formation.
The main structural feature is a fault that strikes east northeasterly across the southern part of the map- area. It appears to be strike slip with an apparent displacement of about 4 miles.
A hammer seismic survey was conducted to determine the thickness and extent of a Carboniferous outlier and the nature of the underlying surface.