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Publikováno v:
Geological Society of America Abstracts with Programs.
Publikováno v:
Geological Society of America Abstracts with Programs.
Publikováno v:
Canadian Journal of Earth Sciences. 53:1511-1538
The well-mapped western part of the Ottawa River Gneiss Complex (ORGC; new name), a large metamorphic core complex, hosts a system of gently plunging cross-folds of outcrop to regional scale situated in the ductile detachment zone between the lower g
Autor:
W.M. Schwerdtner, Madeeha Ahmed, Jason Tsolas, Brant Zeeman, C.C. Wang, Toby Rivers, Jack Yang
Publikováno v:
Canadian Journal of Earth Sciences. 51:243-265
Remnants of the early-Ottawan thrust-sheet stack are exposed in the Central Gneiss Belt (CGB, lower portion of stack) and the Composite Arc Belt (upper portion of stack). Post-collisional vertical thinning and associated horizontal extension of the s
Publikováno v:
Canadian Journal of Earth Sciences. 47:875-899
In the Central Gneiss Belt of the Grenville Orogen (Ontario), ca. 1020 Ma, extensional shearing, disharmonic buckle folding, and seismic faulting at middle to upper crustal levels affected the geological structure of pre-1040 Ma, ductile-thrust sheet
Autor:
Werner P. Klemens, W.M. Schwerdtner
Publikováno v:
Precambrian Research. 167:16-34
In the Central Gneiss Belt of Ontario (CGB), the parautochthon and a stack of four thrust sheets have been transformed into a complex system of inclined and upright folds. One large upright structure, the 50 km long Wahwashkesh-Ahmic Lakes antiform (
Autor:
W.M. Schwerdtner, Toby Rivers
Publikováno v:
Geological Society of America Abstracts with Programs.
Publikováno v:
Canadian Journal of Earth Sciences. 42:1927-1947
The Grenville Province and other parts of the Canadian Shield contain major (>100 km long) high-strain zones, also called shear belts or ductile shear zones, that are hosted by heterogeneously deformed gneisses and schists. In well-exposed segments o
Autor:
M.L Cote, W.M. Schwerdtner
Publikováno v:
Precambrian Research. 107:93-116
The Saskatchewan segment of juvenile Paleoproterozoic crust, inner Trans-Hudson Orogen (Reindeer Zone), is widely regarded as a NW-dipping stack of litho-structural domains. The metavolcanic-metasedimentary La Ronge Domain (LRD), whose least deformed