Andrew J. Calvert

Simon Fraser University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

N Hayward

Natural Resources Canada

Michael P. Doublier

Geoscience Australia

Michael A. Fisher

IEEE Computer Society

M. G. Bostock

University of British Columbia

Eric M. Takam Takougang

University of Buea

S. L. Klemperer

Stanford University

Rajesh Vayavur

Laurentian University

Narumi Takahashi

Japan Agency for Marine-Earth Science and Technology

R. M. Clowes

University of British Columbia

Amir Mansour Farahbod

Geological Survey of Canada

Cooperative Institutions

Geological Survey of Canada

United States Geological Survey

Natural Resources Canada

University of British Columbia

Geological Survey of Western Australia

Centre National de la Recherche Scientifique

Simon Fraser University

University of Toronto

Geoscience Australia

Institut de physique du globe de Paris

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

A comparison of the seismic structure of oceanic island arc crust and continental accreted arc terranes

AGU Fall Meeting Abstracts (2015)

Andrew J. Calvert

Island arc

Continental Margin

Source

Cite

Citations (0)

Basement architecture from the Pilbara Craton to the Aileron Province: new insights from deep seismic reflection line 18GA-KB1

Michael P. Doublier Simon P. Johnson Klaus Gessner Heather M. Howard Richard Chopping

Reflection

Basement

Line (geometry)

10.11636/134381

Cite

Citations (3)

Deep Seismic Reflection Evidence for Duplex Formation Within the Northern Cascadia Inter-Plate Boundary Zone

AGU Fall Meeting Abstracts (2003)

Andrew J. Calvert

Reflection

Duplex (building)

Source

Cite

Citations (0)

Crustal structure and earthquake hazards of the subduction zone in southwestern British Columbia and western Washington

USGS professional paper (2005)

Michael A. Fisher R. D. Hyndman Samuel Y. Johnson Thomas M. Brocher Robert S. Crosson

10.3133/pp1661c

Cite

Citations (12)

Structure of the South-Eastern Nechako Basin, British Columbia: Results of Seismic Interpretation and First-Arrival Tomographic Inversion

N Hayward Andrew J. Calvert

Summary Reinterpretation of Canadian Hunter seismic reflection profiles provides new insight into the complex structure, stratigraphy and tectonic history of the south-eastern Nechako Basin. The basin, which contains predominantly Mesozoic sedimentary and volcanic rocks, is overlain by Eocene and Neogene volcanic rocks and Pleistocene glacial deposits that mask the underlying geology. New results reveal details of how Cretaceous sedimentary and volcanic rocks, deformed during preEocene transpression, were re-activated and cut by NW-SE trending strike-slip faults related to Eocene transtension. First-arrival tomographic models provide new information on the structure and velocity of the near-surface volcanic rocks. The focussing of model rays allows for estimation of the thickness of the Endako Group in the vicinity of well b-82-C, and may elsewhere provide information on the thickness of the Neogene and Eocene volcanic rocks.

Transtension

Neogene

Transpression

Source

Cite

Citations (3)

Waveform Inversion of Marine Seismic Reflection Data from the Queen Charlotte Basin

AGU Spring Meeting Abstracts (2009)

E. Takam Takougang Andrew J. Calvert

Reflection

Queen (butterfly)

Ocean bottom

Source

Cite

Citations (0)

3-D Seismic Imaging of Sedimentary Underplating at the Corner of the Cascadia Mantle Wedge.

AGUFM (2010)

Leiph Preston Andrew J. Calvert Amir Mansour Farahbod

Underplating

Wedge (geometry)

Source

Cite

Citations (0)

The structure of the Charlie–Gibbs Fracture Zone

Journal of the Geological Society (1986)

Andrew J. Calvert R. B. Whitmarsh

This short paper summarizes the results of a major combined seismic refraction and gravity survey carried out over the Charlie–Gibbs Fracture Zone. Crust 3–4.5 km thick, and possessing an anomalously low seismic velocity structure, was found beneath the fracture zone and gradual crustal thinning was detected over some 40 km to the south of the transform. The most plausible explanation for the ridge to the north is that it consists of uplifted normal crust.

10.1144/gsjgs.143.5.0819

Cite

Citations (9)

Deep seismic reflection constraints on Paleogene crustal extension in the south-central Intermontane belt, British Columbia

Canadian Journal of Earth Sciences (2014)

Andrew J. Calvert Draga Talinga

Following growth of the Canadian Cordillera during the Mesozoic, the southern Cordillera was subject to extension during the Paleocene and Eocene that correlated with widespread volcanic activity in south-central British Columbia, including across much of the Nechako–Chilcotin plateau. In 2008, Geoscience BC acquired 330 km of deep vibroseis reflection profiles on the plateau, mostly over the Stikinia arc terrane, but also over its eastern contact with the oceanic Cache Creek terrane. All seven seismic reflection lines reveal a strongly reflective lower crust that extends from 7 to 9 s down to the Moho, which is defined by the downward termination of reflectivity at 11–12 s. In the uppermost crust, extension occurred by block faulting with faults soling into subhorizontal to shallowly dipping detachments above 10 km depth. Extension in the deeper upper and middle crust, which was partly controlled by antiforms likely related to earlier shortening, was accommodated on a network of anastomosing shear zones that sole out into the top of the reflective lower crust. The lower crustal reflections correlate with seismic P-wave velocities of 6.45–6.98 km/s, indicating that the reflective lower crust has a more mafic composition than the middle crust. As in other extensional settings, we suggest that this pervasive fabric of reflectors arises from the intrusion of mantle-derived basaltic magma into zones of ductile shearing, and that differentiation of these melts resulted in the widespread Paleocene to Eocene volcanism. Reflector dips indicate that extension was approximately east–west, consistent with north-northwest-trending horsts separated by basins filled with Paleocene to Eocene volcanic and volcaniclastic rocks.

Metamorphic core complex

10.1139/cjes-2013-0142

Cite

Citations (4)

Publisher's correction to “Along‐strike variations in the shallow seismic velocity structure of the Seattle fault zone: Evidence for fault segmentation beneath Puget Sound”

Journal of Geophysical Research Atmospheres (2006)

Andrew J. Calvert

[1] In the article “Along-strike variations in the shallow seismic velocity structure of the Seattle fault zone: Evidence for fault segmentation beneath Puget Sound” (Journal of Geophysical Research, 108(B1), 2005, doi:10.1029/2001JB001703, 2003), owing to a publisher’s error, authorship was incorrectly attributed to a group. SHIPS Working Group should not have been listed among the authors, as only individual persons who have significantly contributed to the research should be listed. Therefore the authors should have been as follows: A. J. Calvert, M. A. Fisher, S. Y. Johnson, T. M. Brocher, K. C. Creager, R. S. Crosson, R. D. Hyndman, Geological Survey of Canada; K. C. Miller, D. Mosher, T. Parsons, T. L. Pratt, G. Spence, U. ten Brink, A. M. Tréhu, and C. S. Weaver.

Seismic zone

Seismic velocity

10.1029/2006jb004430

Cite

Citations (0)