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Polaris Fault

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Journal Article
Published: 14 February 2018
Environmental and Engineering Geoscience (2018) 24 (1): 111–120.
... of approximately 45 to over 55 ft (13.7 to >16.8 m) in the otherwise relatively flat-lying “Blue Silt” at the locations shown on Figure 7 . These vertical “offsets” occurred in the approximate location of the Polaris Fault (see geomorphology discussions), where it is projected to pass between the spillway...
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(a) Regional map showing location of the <b>Polaris</b> <b>fault</b> and selected regiona...
Published: 01 June 2011
Figure 1. (a) Regional map showing location of the Polaris fault and selected regional faults from the U.S. Geological Survey (USGS) Quaternary Fault and Fold Database (see Data and Resources ) and from I. Wong et al. (unpublished report, 2008, see Data and Resources : MVFZ, Mohawk Valley
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Calculated Maximum Earthquake Magnitudes for the <b>Polaris</b> <b>Fault</b>, Assuming a ...
Published: 01 June 2011
Table 2 Calculated Maximum Earthquake Magnitudes for the Polaris Fault, Assuming a Range of Rupture Lengths and Depths * Rupture Length (km) Rupture Depth (km) Rupture Area (km 2 ) M † Equation 1 ‡ M † Equation 2 § M † Equation 3 ∥ 25 10 250 6.7 6.4 6.4
Journal Article
Published: 01 June 2011
Bulletin of the Seismological Society of America (2011) 101 (3): 1162–1181.
...Figure 1. (a) Regional map showing location of the Polaris fault and selected regional faults from the U.S. Geological Survey (USGS) Quaternary Fault and Fold Database (see Data and Resources ) and from I. Wong et al. (unpublished report, 2008, see Data and Resources : MVFZ, Mohawk Valley...
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Journal Article
Journal: Economic Geology
Published: 01 December 1982
Economic Geology (1982) 77 (8): 1851–1866.
... rotations in the Osburn fault, Placer Creek fault, and Polaris fault system may be responsible for reorienting fold trends south of the Osburn fault. GeoRef, Copyright 2006, American Geological Institute. Abstract, Copyright, Society of Economic Geologists 1982 ...
Journal Article
Published: 01 January 2003
Seismological Research Letters (2003) 74 (1): 41–43.
...G. Atkinson; J. Adams; I. Asudeh; M. Bostock; J. Cassidy; D. Eaton; I. Ferguson; A. G. Jones; D. Snyder; D. White For further information visit the POLARIS Web site or contact the POLARIS president at gmatkinson@aol.com , the program manager at iasudeh@nrcan.gc.ca , or any of the principal...
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Journal Article
Published: 14 August 2018
Bulletin of the Seismological Society of America (2018) 108 (5A): 2580–2593.
... Holocene fault zones including the Polaris, Mohawk Valley, and Dog Valley Quaternary fault zones that pose a significant hazard to the populated regions in the area. We use waveform cross correlation to relocate the earthquakes and empirical Green’s‐function methods to estimate the source parameters of all...
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Journal Article
Journal: Economic Geology
Published: 01 March 2004
Economic Geology (2004) 99 (2): 339–363.
... fold axes (F 3 ), combined with later fault offsetting ( Marinho et al., 1986 ). The mafic-ultramafic bodies are typically less than 300 m thick ( de Deus et al., 1982 ). The intrusion sequence, primary petrology, and cryptic variation of the sill have been described further by de Deus et al. (1982...
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Journal Article
Published: 01 April 1996
Journal of the Geological Society (1996) 153 (2): 323–328.
... of Wales College of Cardifi PO Box 914, Cardiff CFl 3YE, UK Department of Environmental Technology, Benedict Building, University of Sunderland SR2 7BW, UK -7Natural Environmental Research Council, Polaris House, North Star Avenue, Swindon SN2 IEU, UK 2 Abstraet: During the last ten years significant...
Journal Article
Published: 01 March 2004
Journal of Sedimentary Research (2004) 74 (2): 298–310.
...." However, by the time of publication of Maxwell's (1968) atlas, this view had been modified to take account of the likely effects of changing sea level and the position of the reef on a major block-faulted passive continental margin. We remained largely ignorant of the geology of the interior...
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Journal Article
Published: 01 January 2004
Exploration and Mining Geology (2004) 13 (1-4): 109–118.
... to be the event that caused fluid movement resulting in the formation of the Polaris deposit ( Randell and Anderson, 1996 ). Randell and Anderson (1990) proposed that faults acted as conduits at the Polaris deposit, and that sulfate-rich brines moved up from the lower evaporites along these faults to the site...
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Journal Article
Published: 01 September 2013
Seismological Research Letters (2013) 84 (5): 899–916.
...Robert F. Mereu; Savka Dineva; Gail M. Atkinson ABSTRACT We analyzed over 3000 Fourier spectra from 370 earthquakes of energy magnitude ( M E ) 1.1–6.0 recorded by the Southern Ontario Seismic Network (SOSN)/POLARIS networks during the period 1991–2010 in the area of southern Ontario and western...
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Journal Article
Published: 01 April 1969
Bulletin of the Seismological Society of America (1969) 59 (2): 615–630.
...K. N. Khattri abstract Theoretical studies have demonstrated that the amplitude spectra of the seismic waves generated by finite moving sources have sequences of minima. The frequencies at which these minima appear are related to the dimensions of the earthquake fault area and the velocity...
Journal Article
Journal: Geology
Published: 01 November 2008
Geology (2008) 36 (11): 895–898.
... subduction and the fate of the slab in northern Cascadia are poorly understood. We use passive teleseismic recordings from an array of POLARIS broadband seismic stations to image crustal and upper mantle structure beneath northern Vancouver Island into the interior of British Columbia. A clear signature...
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Journal Article
Published: 05 July 2011
Canadian Journal of Earth Sciences (2011) 48 (6): 1038–1049.
...-scale crustal structure and has been successfully applied to measuring the depths of sedimentary basins. Station-to-station Green’s functions within the basin were estimated by cross-correlating the vertical components of the seismic noise data recorded by 12 POLARIS (Portable Observatories...
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Journal Article
Published: 05 August 2009
Canadian Journal of Earth Sciences (2009) 46 (6): 441–464.
...Evan J. Gowan; Ian J. Ferguson; Alan G. Jones; James A. Craven Abstract Magnetotelluric (MT) measurements were made in southern Manitoba, Canada, as part of the Portable Observatories for Lithosphere Analysis and Research Investigating Seismicity (POLARIS) project, to image the northeastern part...
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Journal Article
Published: 02 February 2016
Bulletin of the Seismological Society of America (2016) 106 (2): 785–798.
... ). Summing the geologically determined slip rates of known active right‐lateral strike‐slip faults across this transect, which only includes 0.3–0.4  mm/yr on the Polaris fault ( Hunter et al. , 2011 ) and the <2  mm/yr rate on the PLFZ from this study, yields a maximum slip rate of ∼2.4  mm/yr...
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Journal Article
Published: 01 March 1979
Bulletin of Canadian Petroleum Geology (1979) 27 (1): 39–50.
...J. Wm. Kerr; A. Ruffman ABSTRACT Newly interpreted bathymetric data show that Crozier Strait has steep, linear, north-south margins, and depths exceeding 400 m. It probably is a fault zone, a graben, formed in the Cretaceous-Tertiary Eurekan Rifting Episode, and modified by glacial and other...
Journal Article
Journal: Geosphere
Published: 19 March 2019
Geosphere (2019) 15 (3): 783–819.
... are that the active structural boundary is (1) a few km west of Lake Tahoe, along the northwest-trending Tahoe-Sierra frontal fault zone (TSFFZ) or (2) within Lake Tahoe, along the largely submerged, north-trending West Tahoe–Dollar Point fault zone (WTDPFZ). Emerald Bay, a famous scenic locality at the southwest end...
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Journal Article
Journal: Geology
Published: 01 November 2010
Geology (2010) 38 (11): 979–982.
... associated with the main basin-bounding faults of the Viking Graben and East Shetland Basin. In contrast, the radiogenic 187 Os/ 188 Os values are associated with North Sea basins located farther away from the basin boundary faults. We suggest that crustal thinning and strain localization within the Viking...
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