... (DOM) varies from immature to overmature (with respect to the oil window) and increases from north to south. The primary control on the DOM is high heat flow associated with plutonism on Moresby and Graham islands. Upper Triassic-Lower Jurassic Kunga Group strata are immature to overmature (0.18-1.75...

... and in the quality of organic matter (QOM-calculated from (S1+S2)/TOC from Rock-Eval pyrolysis) for Triassic and Jurassic strata on Moresby Island primarily reflect the level of organic maturation. High heat flow associated with plutonism on Moresby Island has resulted in generally poor hydrocarbon source potential...

... southern Moresby Island but only 23 km north of Vancouver Island. Excluding the approximately 5 km of the Tertiary sediments, the crust in the latter area is only about 18 km thick, suggesting substantial crustal thinning in Queen Charlotte Sound. Such thinning of the crust supports an extensional...

... earthquake to extend coverage to the southeast and have not been analyzed previously. The inversions provide estimates of the shear‐wave velocity structure beneath much of Moresby Island. Results indicate a positive velocity contrast at approximately 18–26 km depth, interpreted as a shallow continental Moho...

... to south in the study area. Besides viscoelastic stress relaxation, these postseismic trends may indicate afterslip on the deeper plate interface beneath northern Moresby Island and possibly aseismic slip along the Queen Charlotte or subparallel faults offshore of southern Moresby Island. Online Material...

... reflectance (Ro rand ) varies regionally from 0.40% to 1.57%. Maturation values up to 2.70% Ro rand occur adjacent to sill and dike rocks. The source rocks are overmature on southeastern and southwestern Graham Island, Maude Island and northernmost Moresby Island, and mature on central Graham Island. RÉSUMÉ...

..., rather than ellipsoid heights determined by GPS . Three methods of examining the data all indicate 0.4–0.6 m subsidence along the western coast of Moresby Island as a result of the 28 October 2012 Haida Gwaii earthquake. Our data are, within the errors, consistent with data from two campaign GPS sites...

... seismographs (OBS's) and a 32-charge explosion line recorded on the two OBS's and eight land-based seismographs (LBS's) deployed across northern Moresby Island were selected to study the structure of the predominantly transform Queen Charlotte Fault Zone and the associated offshore terrace. Two-dimensional ray...

...T. E. Hobbs; J. F. Cassidy; S. E. Dosso; C. Brillon Abstract This article examines spatial changes to the local stress field resulting from the 28 October 2012, M w 7.8 Haida Gwaii earthquake, off the west coast of Moresby Island, British Columbia. This event occurred on a northeast‐dipping...

...Robert M. Kleinpell ABSTRACT Bitumen is found in calcite veins near volcanic rocks and in amygdules in andesite and basalt of Tertiary age on Graham, Tar, and Moresby islands of the Queen Charlotte group. On the beach at Lawn Hill gummy black tar occurs in the interstices of a fine breccia...

...F igure 3. Locality map of Cretaceous foraminiferal-bearing exposures along: A = Rennell Sound Road, south-central Graham Island; B = north shore of Cumshewa Inlet; C = vicinity of Onward Point, northeastern Moresby Island; and D = vicinity of Beresford Bay, northwest coast of Queen Charlotte...

... line. Person for scale. ( b ) Detail of unconformity near the north end of Moresby Island, with brecciated basement overlain by undulatory parallel laminated coarse- to medium-grained sandstones. Arrows mark unconformity. Hammer is 35 cm long. ( c ) Smooth unconformity on the north end of Moresby...