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Duncan Canal shear zone

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Journal Article
Journal: GSA Bulletin
Published: 01 October 1990
GSA Bulletin (1990) 102 (10): 1378-1392.
...WILLIAM C. MCCLELLAND; GEORGE E. GEHRELS Abstract The Duncan Canal shear zone, central southeastern Alaska, disrupts and penetratively deforms Devonian, Pennsylvanian, and Upper Triassic strata of the lexander terrane. The deformation is interpreted to have occurred within a regime of right-lateral...
Journal Article
Journal: Geosphere
Published: 01 December 2012
Geosphere (2012) 8 (6): 1588-1605.
... to fractured basement aquifers in the ED and/or Sinai: intersecting faults, intersecting faults and shear zones, or highly fractured mélange. Observations extracted from the web-based GIS data sets were used to identify these three settings and to extract additional criteria that could be of use...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2011
GSA Bulletin (2011) 123 (5-6): 911-924.
... the extension of the Najd shear system of the Arabian Shield into the Central Eastern Desert of Egypt, bringing the total length of the Najd system in the Arabian and Nubian shields to 2300 km. Along the zone occupied by the Najd system in the Arabian-Nubian Shield, brittle and ductile styles of deformation...
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Journal Article
Journal: GSA Bulletin
Published: 01 September 2008
GSA Bulletin (2008) 120 (9-10): 1119-1133.
...Scott Giorgis; William McClelland; Annia Fayon; Brad S. Singer; Basil Tikoff Abstract The western Idaho shear zone is one of several Cretaceous high-strain zones in the Cordillera that are thought to have been associated with the northward translation and/or docking of terranes presently in British...
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Journal Article
Journal: The Leading Edge
Published: 01 October 2018
The Leading Edge (2018) 37 (10): 740-745.
...-velocity (50–100 m/s) zone at depth to 15 m beneath the 17 th Street Canal matches low-rigidity clays observed in geotechnical logs. Comparison to active surface-wave methods at the Industrial Canal site display similar results but highlight that while active methods have better resolution in the upper few...
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Journal Article
Published: 01 December 2007
Bulletin of the Seismological Society of America (2007) 97 (6): 2009-2023.
... relative to the starting model. These changes to the starting model remove the small increase present in the starting shear velocity model from the Moho to ∼22.5-km depth, instead creating a monotonically decreasing velocity structure in the mantle lithosphere down to the low velocity zone minimum at 70-km...
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Journal Article
Published: 22 January 2013
Canadian Journal of Earth Sciences (2013) 50 (6): 678-691.
... alteration up to 2 km from the BMC margin. Fig. 5. Geological sketch map of the Bokan Mountain complex area showing the locations of the main mineralized zones (modified after MacKevett 1963 , Thompson et al. 1980 , and Gehrels 1992 ) as well as the shear zones and the locations of the dated...
Journal Article
Journal: Lithosphere
Published: 06 June 2018
Lithosphere (2018) 10 (4): 566-578.
...D. Quandt; P. Micheuz; W. Kurz; K. Krenn Abstract This study deals with microtextures and fluid inclusions from veins and vesicles hosted in the Troodos Pillow Lavas that enable a conclusive model for vein formation during the post-magmatic stage of the Troodos supra-subduction zone. Three...
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Journal Article
Published: 01 January 2011
Journal of Paleontology (2011) 85 (1): 122-155.
... was controlled both lithofacially and by later tectonism. The Río Salinas Member is intensely deformed and truncated by the listric normal shear zone below the overlying Carboniferous sandstones at Santiago Ixtaltepec ( Centeno-García and Keppie, 1999 ; Landing et al., 2007 ). This tectonic activity limited...
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Journal Article
Journal: Lithosphere
Published: 01 April 2016
Lithosphere (2016) 8 (2): 165-184.
... underthrust into a spatially and temporally transient distributed ductile shear zone near the base of the overriding wedge. Rocks previously incorporated into this zone were displaced upward and exhumed through the combined effects of renewed underplating at depth and compensating extensional and erosional...
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Journal Article
Published: 01 December 2016
European Journal of Mineralogy (2016) 28 (6): 1059-1078.
... but different temperature conditions of formation. Literature data on the mapped distribution of metabasic rock types suggests an isobaric metamorphic field gradient in the Mt. Hibernia Complex, with temperatures increasing slightly but significantly from blueschist to greenschist zones. We interpret...
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Journal Article
Journal: Geosphere
Published: 01 June 2017
Geosphere (2017) 13 (3): 782-810.
... at the mouth of Hobo Canyon (site JM2 in Fig. 1 ). The fault zone consists of three strands that offset multiple shorelines of the Sehoo lake cycle and alluvial sediments that postdate retreat of the lake ( Fig. 6 ). The middle strand is well exposed in a gully as a well-defined gouge and shear zone...
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Journal Article
Published: 31 October 2001
Canadian Journal of Earth Sciences (2001) 38 (11): 1579-1599.
... accretion of the outboard terranes, and early Tertiary dip-slip motion on the Coast shear zone. Southeast Alaska and western British Columbia are underlain by a wide variety of terranes that record the progressive accretion of crustal fragments to the Cordilleran margin ( Berg et al. 1972 ; Monger et...
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Journal Article
Journal: Geosphere
Published: 01 October 2014
Geosphere (2014) 10 (5): 892-904.
... deposited from melting ice in the cooler climatic conditions expected for this margin ( Duncan and Goff, 2001 ; Knebel, 1984 ). Five shear vane measurements on cores from the upper 30 m at Ocean Drilling Program (ODP) Site 1073 ( Fig. 4 ) recorded natural shear strengths of 9–21 kPa ( Christie-Blick et al...
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Journal Article
Journal: Lithosphere
Published: 01 June 2014
Lithosphere (2014) 6 (3): 200-215.
.... At least some of this motion was accommodated along the Early Cretaceous Kitkatla shear zone, which now forms the inboard margin of the Banks Island assemblage. Deformation and metamorphism of the Banks Island assemblage occurred prior to this sinistral motion, however, as crosscutting dikes yield U-Pb...
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Journal Article
Journal: GeoArabia
Publisher: Gulf Petrolink
Published: 01 July 2015
GeoArabia (2015) 20 (3): 175-224.
... nested within its predecessor, with the older basin lying slightly counter-clockwise to the younger. It is proposed that counter-clockwise, regional (and basin) rotation was facilitated by newly documented NW-oriented cross-shears, with inter-basin periods of erosion or non-deposition due to whole-basin...
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Journal Article
Journal: Geosphere
Published: 24 October 2018
Geosphere (2018) 14 (6): 2337-2354.
...Glenn Spinelli; Ikuko Wada; Kelin Wang; Jiangheng He; Robert Harris; Michael Underwood Abstract The redistribution of heat by fluid circulation in subducting igneous crust generates thermal anomalies that can affect the alteration of material both within a subduction zone and in the incoming plate...
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Journal Article
Journal: Geosphere
Published: 21 November 2019
Geosphere (2019)
... geochronologic data from a dike injected into the Totschunda fault zone, which provides constraints on the timing of intra–suture zone basinal deformation. The Beaver Lake formation is an important sedimentary succession in the northwestern Cordillera because it provides an exceptionally rare stratigraphic...
Journal Article
Published: 02 April 2013
Quarterly Journal of Engineering Geology and Hydrogeology (2013) 46 (2): 132-155.
... brittleness when the particles are single-sized, rounded and loose. As large differential movement occurs in thin bands, the textures that give rise to residual strength occur in shear zones. Clay-rich soils exhibit shear zone formation to a much greater degree than do granular soils, as during...
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Journal Article
Published: 01 February 2003
Environmental and Engineering Geoscience (2003) 9 (2): 167-178.
... in Puerto Rico suggest that methane flux is more closely correlated with the shear stress in sediments caused by bottom currents. Bottom currents in turn are a complex function of wind, internal pressure gradients, and lake bathymetry. A simple physical model of bottom currents and sediments in these lakes...
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