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Relevant bibliographies by topics / Geology – British Columbia – Gambier Island

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Academic literature on the topic 'Geology – British Columbia – Gambier Island'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Geology – British Columbia – Gambier Island"

1

Gabelman, John W., and William M. Hanusiak. "Gold Occurrence at Island Copper Mine, British Columbia." Journal of Geochemical Exploration 25, no. 1-2 (March 1986): 252. http://dx.doi.org/10.1016/0375-6742(86)90048-8.

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2

CLAGUE, JOHN J., and PETER T. BOBROWSKY. "Tsunami deposits beneath tidal marshes on Vancouver Island, British Columbia." Geological Society of America Bulletin 106, no. 10 (October 1994): 1293–303. http://dx.doi.org/10.1130/0016-7606(1994)106<1293:tdbtmo>2.3.co;2.

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3

Cosma, T., and I. L. Hendy. "Pleistocene glacimarine sedimentation on the continental slope off Vancouver Island, British Columbia." Marine Geology 255, no. 1-2 (September 2008): 45–54. http://dx.doi.org/10.1016/j.margeo.2008.07.001.

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Welker, Richard R. "The Geochemical Environment of Westmin Resources Buttle Lake Mine, Vancouver Island, British Columbia." Journal of Geochemical Exploration 25, no. 1-2 (March 1986): 254–55. http://dx.doi.org/10.1016/0375-6742(86)90052-x.

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Arksey, Ron, and Doug VanDine. "Example of a debris-flow risk analysis from Vancouver Island, British Columbia, Canada." Landslides 5, no. 1 (November 28, 2007): 121–26. http://dx.doi.org/10.1007/s10346-007-0105-0.

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TERABAYASHI, M. "Compositional evolution in Ca-amphibole in the Karmutsen metabasites, Vancouver Island, British Columbia, Canada." Journal of Metamorphic Geology 11, no. 5 (September 1993): 677–90. http://dx.doi.org/10.1111/j.1525-1314.1993.tb00180.x.

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7

James, Thomas, Evan J. Gowan, Ian Hutchinson, John J. Clague, J. Vaughn Barrie, and Kim W. Conway. "Sea-level change and paleogeographic reconstructions, southern Vancouver Island, British Columbia, Canada." Quaternary Science Reviews 28, no. 13-14 (June 2009): 1200–1216. http://dx.doi.org/10.1016/j.quascirev.2008.12.022.

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8

Hungr, O., and S. G. Evans. "An example of a peat flow near Prince Rupert, British Columbia." Canadian Geotechnical Journal 22, no. 2 (May 1, 1985): 246–49. http://dx.doi.org/10.1139/t85-034.

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Peat flows, bog flows, or bog bursts consist of a rapid downhill movement of masses of saturated peat. Although this process has been documented from peatlands in other parts of the world, the slope movement described here is the first to be reported from Canadian peatlands. The peat flow took place on the east coast of Kaien Island, near Prince Rupert, British Columbia, and was initiated by a slump in a peat spoil pile. It involved the sudden mobilization of a strip of in situ peat 210 m long and approximately 20 m wide. The peat was fibrous, rich in roots, and had a moisture content of approximately 240%. The flow demonstrates the high potential mobility of natural peat covers and the role of undrained loading in effecting movement of slopes as low as 5°. Key words: peat, flow slide, peat flow, northeast British Columbia.

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9

Bustin, Amanda M. M., Ron M. Clowes, James W. H. Monger, and J. Murray Journeay. "The southern Coast Mountains, British Columbia: New interpretations from geological, seismic reflection, and gravity data." Canadian Journal of Earth Sciences 50, no. 10 (October 2013): 1033–50. http://dx.doi.org/10.1139/cjes-2012-0122.

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The southern Coast Mountains of British Columbia are characterized by voluminous plutonic and gneissic rocks of mainly Middle Jurassic to Eocene age (the Coast Plutonic Complex), as well as metamorphic rocks, folds, and thrust and reverse faults that mostly diverge eastward and westward from an axis within the present mountains, and by more localized Eocene and younger normal faults. In the southeastern Coast Mountains, mid-Cretaceous and younger plutons intrude Bridge River, Cadwallader, and Methow terranes and overlap Middle Jurassic through Early Cretaceous marine clastic rocks of the Tyaughton–Methow basin. The combination of geological data with new or reanalyzed geophysical data originating from Lithoprobe and related studies enables revised structural interpretations to be made to 20 km depth. Five seismic profiles show very cut-up and chaotic reflectivity that probably represents slices and segments of different deformed and rearranged rock assemblages. Surface geology, seismic interpretations, physical properties, and gravity data are combined in two profiles across the Coast Mountains to generate two new 2-D density models that are interpreted in terms of the geological units. The western part of the southern Coast Mountains consists primarily of Jurassic to mid-Cretaceous plutons to depths of 20 km with slices of Wrangellia (in the west) and Early Cretaceous volcanic and sedimentary rocks (Gambier group) in the upper 10 km. The eastern part, east of the Owl Creek fault, consists of slices of Cadwallader and Bridge River terranes and Tyaughton–Methow basin strata with limited slices of plutonic rocks at depths less than 10 km. Below that, Eocene and Late Cretaceous plutons dominate for another 10 km.

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10

Evans, Stephen G. "The 1946 Mount Colonel Foster rock avalanche and associated displacement wave, Vancouver Island, British Columbia." Canadian Geotechnical Journal 26, no. 3 (August 1, 1989): 447–52. http://dx.doi.org/10.1139/t89-057.

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The 1946 Vancouver Island earthquake (M = 7.2) triggered a rock avalanche from the north face of Mount Colonel Foster, central Vancouver Island, British Columbia. Approximately 1.5 × 106 m3 of Triassic volcaniclastic rocks detached from between el. 1965 m and el. 1600 m. Although just over half of this volume was deposited in the upper part of the track above el. 1080 m, approximately 0.7 × 106 m3 descended the lower part of the track and entered the waters of Landslide Lake at el. 890 m. The resultant displacement wave ran up a maximum vertical distance of 51 m on the opposite shore and the wave crest was about 29 m high when it spilled over the lip of the lake. Water displaced during the event destroyed forest in the upper reaches of the Elk River valley up to 3 km from Landslide Lake. The wave at Landslide Lake is comparable to other waves generated by similar magnitude rock avalanches in Peru and Norway and it is the largest recorded in the Canadian Cordillera. The case history illustrates the conditions where substantial damage may be caused by a rock avalanche well beyond the limits of its debris when it produces a landslide-generated wave in the mountainous terrain of the Cordillera. Key words: rock avalanche, earthquake-induced landslides, landslide-generated waves, mountains.

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Dissertations / Theses on the topic "Geology – British Columbia – Gambier Island"

1

Stapinsky, Martin John. "Groundwater flow system in a mountainous region, Mount Myra, Vancouver Island, British Columbia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ66189.pdf.

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2

Andrew, Anne. "Lead and strontium isotope study of five volcanic and intrusive rock suites and related mineral deposits, Vancouver Island, British Columbia." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26953.

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Lead isotope compositions have been obtained from five major volcanic and intrusive rock suites and several ore deposits on Vancouver Island. Lead, uranium and thorium concentrations and strontium isotope ratios have been obtained for a subset of these samples. The rock suites examined are the Paleozoic Sicker Group, Triassic Karmutsen Formation, Jurassic Island Intrusions and Bonanza Group volcanic rocks, and the Eocene Catface intrusions. Isotope geochemistry of the Sicker Group is consistent with the interpretation that it formed as an island arc. Relatively high 207pb/204pb ratios indicate sediment involvement in the subduction process, which suggests that the Sicker Group formed close to a continent. Buttle Lake ore deposits display decreasingly radiogenic lead isotope ratios with time, suggesting that the associated magmas become increasingly primitive. This supports the hypothesis that these deposits formed during the establishment of rifting in a back-arc environment. Karmutsen Formation flood basalts display isotopic mixing between an ocean island-type mantle source and average crust. Isotopic evidence is used to support a Northern Hemisphere origin for these basalts. Mixing is apparent in the lead and strontium isotope signatures of the Island Intrusions and Bonanza Group volcanic rocks, between depleted mantle and crustal (possibly trench sediments) components. This is consistent with formation of these rocks in an island arc environment. Eocene Catface intrusions have relatively high 207pb/204pb indicating that crustal material was involved in their formation. There are two groups of plutons corresponding to an east belt and west belt classification. Galena from the Zeballos mining camp related to the Eocene Zeballos pluton indicates that the mineralization was derived from the pluton. Galena lead isotope data from Vancouver Island may be interpreted in a general way by comparison with data from deposits elsewhere of known age and origin. No single growth curve model can be applied. Lead isotope characteristics of Vancouver Island are clearly different from those of the North American craton, reflecting the oceanic affinities of this terrane. A new technique has been developed to compare 207pb/204pb ratios between samples with differing 206pb/204pb ratios. The procedure projects 207pb/204pb ratios along suitable isochrons until they intersect a reference value of 206pb/204pb. This technique can be used for interpreting lead isotope data from old terranes, in which lead and uranium may have undergone loss or gain, and if lead and uranium abundances have not been measured.
Science, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate

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3

Juras, Stephen Joseph. "Geology of the polymetallic volcanogenic Buttle Lake Camp, with emphasis on the Price Hillside, central Vancouver Island, British Columbia, Canada." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27360.

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The Buttle Lake Camp is a major Paleozoic volcanogenic massive sulphide district in which the relationships between massive sulphide mineralization and associated volcanism are best explained if the ore deposits and associated lithologic units formed in a rift basin generated by rifting in an island arc system. This setting accounts for the marked linear distribution of the massive sulphide bodies, and the presence and distribution of volcanic products from four distinct source areas: a volcanic arc region, a back-arc (or intra-arc) rifting region, and two seamount areas. These interpretations were achieved largely through detailed mapping (1: 2400) of the Price Hillside and the relogging of pertinent drill core. Geology of the Buttle Lake Camp consists of newly proposed, four lowermost formations of the Paleozoic Sicker Group in the Buttle Lake uplift (in order of decreasing age): (1) the Price Formation, a thick sequence of basaltic andesite flows and related breccias; (2) the massive sulphide-bearing Myra Formation, consisting of mainly volcanic and volcaniclastic units; (3) the Thelwood Formations bedded sequence of siliceous tuffaceous sediments, subaqueous pyroclastic deposits and mafic sills; and (4) the Flower Ridge Formation, largely comprising coarse mafic pyroclastic deposits. Significant units within the Myra Formation are the lowermost, largely felsic H-W Horizon which hosts the large H-W deposit; the Lynx-Myra-Price Horizon, which contains two massive sulphide mineralized felsic volcanic units; the ultramafic G-Flow unit; and the uppermost, basaltic Upper Mafic unit. Zircon U-Pb dating yielded a Late Devonian age of 370 Ma for the Myra Formation. Volcanic units in the Price and Myra Formations are grouped into five volcanic series: two mafic to intermediate volcanic series, two felsic volcanic series, and an ultramafic to mafic volcanic series. These volcanic series are the result of at least three distinct and partly contemporaneous magmatic lineages. Source region for the ultramafic to intermediate parental magmas was an upper mantle peridotite variably enriched in large ion lithophile elements but depleted in high field strength elements (relative to N-type MORB). The felsic volcanic series were generated from two distinct sources. One series is from evolved andesitic magma whereas the other is from magma formed by partial melting of lower crustal material.' The Price and Myra Formations represent a general sequence of repeated events comprising: mafic to intermediate arc volcanism; rifting and sulphide mineralization; felsic arc.volcanism; ultramafic to mafic rift volcanism; and volcanogenic sedimentation. The sequence was repeated twice and formed two mineralized horizons (H-W and Lynx-Myra-Price). The Thelwood and Flower Ridge Formations indicate a major change in depositional style and environment from the two underlying units. The Thelwood Formation is a sediment-sill complex underlying mafic volcanic rocks of the Flower Ridge Formation.
Science, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate

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4

Hesthammer, Jonny. "Stratigraphy and structural geology of Upper Triassic and Jurassic rocks in the central Graham Island area, Queen Charlotte Islands, British Columbia." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/29872.

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Upper Triassic and Jurassic rocks in the central Graham Island area comprise shale, siltstone, sandstone, and conglomerate of the Kunga, Maude, and Yakoun Groups. Volcanic rocks are common in the Middle Jurassic Yakoun Group. The oldest unit exposed within the study area is the Lower Jurassic Sandilands Formation of the Kunga Group, a more than 250 metre thick sequence of interbedded organic-rich shale, tuff, siltstone, and sandstone. The Lower Jurassic Maude Group conformably overlies the Kunga Group and is divisible into four formations. The Ghost Creek Formation is an organic-rich black fissile shale, and is overlain by calcareous sandstone of the Fannin Formation. The Whiteaves Formation consists of fissile calcareous grey shale that grades upwards into fossil-rich medium- to coarse-grained, sandstone of the Phantom Creek Formation. The base of the Middle Jurassic Yakoun Group is marked by an angular unconformity. The unit is more than 1500 metres thick and is divided into four lithofacies. The lowermost shale and tuff lithofacies is a sequence of interbedded shale, tuff, siltstone, and sandstone, with shale dominating. The sandstone lithofacies overlies and partly interfingers with the shale and tuff lithofacies and comprises medium- to thickly-bedded lithic arenite interlayered with thinly-bedded shale. The conglomerate lithofacies exists within the sandstone lithofacies and consists mostly of thickly-bedded pebble and cobble conglomerate. The volcanic lithofacies interfingers with, and overlies the sedimentary rocks of the Yakoun Group, and includes lava flows, pyroclastic rock deposits, and lahars. The Kunga and Maude Groups record several relative changes in sea level. They formed in a progressively deepening basin. In Pliensbachian time, the basin shallowed and deposition, represented by the upper Fannin Formation of the Maude Group, was near-shore. Toarcian time is marked by an abrupt transgression. The upper part of the Whiteaves Formation and the Phantom Creek Formation of the Maude Group indicate a subsequent regression. The sedimentary rocks of the Yakoun Group were deposited in local shallow marine basins. Volcanic rocks are most abundant in the eastern parts of the map area, and indicate that an igneous source is located in that direction. All rock units in the map area are deformed by major northwest-trending faults and folds, reflecting at least four northeast-southwest oriented deformational events. The angular unconformity at the base of the Yakoun Group restricts one compressional phase to mid-Jurassic time. Abundant southwest-verging folds suggest development of northeast-dipping thrust faults during this compressional event. Northeast-trending normal faults cut through the thrust faults, postdating them and indicating a period of extension. Rocks of the Sandilands Formation are observed thrust on top of the Yakoun Group, thus indicating a second compressional event. Several small-scale strike-slip faults cut through all described rock units and overlying Tertiary sections, suggesting a late Tertiary deformational event. The Middle Jurassic compressional event may be a result of collision of Wrangellia with North America, or could have been caused by changes in relative plate motion between the North American and Pacific plates during the break-up of Pangaea. Lithologic similarities between the Jurassic and older units of Wrangellia on the Queen Charlotte Islands and coeval rocks of the Alexander terrane in southeastern Alaska suggest that there are no clear differences between the two, and that they were contiguous since Upper Paleozoic time.
Science, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate

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5

Brown, Kendrick Jonathan. "Late quaternary vegetation, climate, fire history, and GIS mapping of Holocene climates on southern Vancouver Island, British Columbia, Canada." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ52755.pdf.

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6

Phipps, Graham Charles. "Hydrogeochemical and isotopic characterization of groundwaters in the Myra-Price Hillsides and Thelwood Valley, Myra Falls mining camp, Vancouver Island, British Columbia, Canada." Thesis, University of Ottawa (Canada), 1998. http://hdl.handle.net/10393/4513.

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Chemical and isotope characteristics of surface and ground waters were investigated within portions of the Myra Falls (Zn-Cu-Pb) mining camp, Vancouver Island (49° 35' N, 125° 34' W). This site was selected to characterize ground waters, investigate metal mobility, develop ground water exploration methods, and to elucidate ground water circulation in mountainous terrain with high rainfall. A broad spectrum of water characteristics were found and have been subdivided into water facies which correspond to hydrologic regimes within the mining camp: (1) local precipitation and surface runoff have Ca2+-HCO 3-- composition. (2) Ca2+-HCO 3-- shallow ground waters are of recent meteoric origin, contain tritium, have low total dissolved solids (TDS) (<200 ppm), and are nearly saturated with respect to dissolved oxygen (DO). These ground waters are mainly limited to the fractured rock carapace of the Myra-Price ridge, and shallow zones within Thelwood Valley. Many of these waters contact sulphide mineralization but have near neutral pH and SO4 2' remains subordinate to HCO3--. (3) Ca2+-Na+-HCO3-- and Na+-Ca2+-HCO3 -- are meteoric waters occurring within the central core of the Myra-Price ridge. They have gained Na+ by cation exchange in rocks previously saturated with Na+-Ca2+-Cl -- water. These ground waters have TDS similar to Ca2+ -HCO3-- ground waters. (4) Na +-Ca2+-Cl-- saline ground waters (TDS >30,000 ppm) were discovered in areas undisturbed by mining operations. These waters are reducing, have alkaline pH, contain very low HCO3 --, are most likely 14C-free, and contain a high volume of helium. The unique chemical and isotope character of the Cl -- waters imply they are exotic to this setting. (5) Na +-Ca2+-SO42-- and Ca 2+-SO42-- ground waters, of meteoric origin, occur at intermediate depth in areas underlying previously mined areas and in areas where dissolution of anhydrite has dominated the anion chemistry. (6) Mg2+- SO42-- runoff waters result from intense weathering of mined waste-rock. Thelwood Valley is unaffected by mine development. Ground waters in this area exhibit a narrow mixing interface between modern Ca 2+-HCO3-- and saline waters, and have little cation exchange. The pH of ground waters related to the Myra Falls mineral deposits is generally near neutral, and acidic ground waters with high metal loads are extremely rare. Amorphous oxy-hydroxides composed primarily of Fe oxy-hydroxides but also including Mn and Al. Zinc displays the strongest and most reliable anomaly contrasts for hydrogeochemical exploration in the dominantly bicarbonate and sulphate ground waters associated with the Zn-Cu-Pb mineralization of the Price ore-deposit. (Abstract shortened by UMI.)

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7

Indrelid, Jarand. "Stratigraphy, structural geology and petroleum potential of Cretaceous and Tertiary rocks in the central Graham Island area, Queen Charlotte Islands, British Columbia." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/29881.

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Mapping at 1:25 000 scale on the central Graham Island has shown that Cretaceous strata are more widely distributed than previously known. This study examines the stratigraphy and structural geology of the Cretaceous rock sequence, and also addresses the petroleum potential of these units. At the base is the Cretaceous sandstone unit. This unit is divided into three lithofacies. The massive sandstone lithofacies is a coarse grained, dark green to greenish black, massive sandstone. Parts of this lithofacies contains up to 50 % glauconite. The grey sandstone lithofacies is finer grained and has better defined bedding than the massive sandstone. It is frequently found with interlayered sandstone, siltstone, and shale. The third sandstone lithofacies is characterized by pervasive bioturbation. All three lithofacies are texturally immature, contain angular quartz and feldspar, and are rich in chlorite clay. The Cretaceous sandstone unit is interpreted as a transgressive sequence deposited on a storm dominated shelf. Conformably overlying the sandstones are the massive friable shale and silty shale of the Cretaceous shale unit. Intervals with increased input of storm generated sandstone layers are found throughout the unit. Spherical and elliptical calcareous concretions up to over 1 m across are common. The Cretaceous shale unit represent a continuation of marine transgression with deepening of the sedimentary basin. Turbidites forming the Skidegate Formation are interbedded with the upper part of the shale unit. This formation consists of interbedded shale, siltstone, and fine grained sandstone. Sedimentary structures are often well developed on bedding surfaces. The rocks of this unit are distal turbidites and levee deposits of a submarine fan. Coarse clastic rocks of the Honna Formation are interbedded with the Skidegate Formation. This formation is dominated by pebbly conglomerates and coarse grained sandstones. The clast material in the conglomerate lithofacies is mainly derived from units present on the islands. The sandstone lithofacies consists of indurated, bluish, medium- to coarse-grained sandstone. This formation is richer in quartz and biotite than any other Cretaceous sandstones of the central Graham Island. The Honna and Skidegate formations are the result of deposition from a submarine fan system that was initiated in Late Cretaceous time. Deposition of shale continued after the deposition of the submarine fan-related formations terminated. The Cretaceous rock sequence is overlain by Tertiary volcanic and sedimentary rocks. Volcanic rocks occur throughout the area, and sediments of the Skonun Formation are exposed in north. Three major periods of deformation are recorded in the Cretaceous units. The first event was a Late Cretaceous to Early Tertiary northeast directed compression, resulting in northwest trending folds and thrust faults. The deformation was highly localized to areas were weakness zones existed in the older basement rocks. Two periods of Tertiary block faulting activity are recognized. The first resulted in northwest-trending faults, parallel to older structures. Later Tertiary block faulting developed northeast trending faults, which are the youngest macroscopic structures in the area. The Cretaceous rock sequence does not contain any promising hydrocarbon source or reservoir rocks. The TOC, S1, and S2 values from Rock-Eval® pyrolysis are low for all units, and the organic material present is mostly gas prone. Visual porosity is generally poor, as a result of chlorite pore-filling clay and calcite cement.
Science, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate

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8

Higham, Kevin Craig. "Island identity in an age of ecology: rural land use and a lodge on Carmelo Point, Gambier Island, British Columbia." Thesis, 1995. http://hdl.handle.net/2429/3740.

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The thesis is intended to provide an alternative model for rural land use planning and environmental management. The project addresses the issue of settlement and development of sixteen hectares on Carmelo Point, Gambier Island. . The intent of the design is to initiate the development of the site within the determined development areas and to provide specific examples of integrating passive ecological technologies. Furthermore, the proposed development is to utilize the natural renewable energy systems while mamtaining the site's natural character and balance. The design program for the thesis is centred in and around a commons and is comprised of a lodge for cohabitation. The lodge is to include seven private chambers which share facilities in common. These facilities are the dining hall, sun rooms, washrooms, and the kitchen. The lodge is to incorporate a post and beam structure supporting a roof, which is used to catch and harvest rainwater. Additionally, the roof is designed to promote a stacking effect within the interior space. Once the harvested rainwater has been filtered and used, it is then treated via a garden solar aquatic septic system. The lodge is recognized as an initial incremental step in developing the site for human settlement. This project is intended as a prototypical ecologically sensitive intervention in a rural landscape which is experiencing development pressures due to its proximity to the Vancouver metropolitan area.

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Timpa, Sean. "The geological history of the Metchosin igneous complex." 2004. http://hdl.handle.net/1828/526.

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The Metchosin Igneous Complex, a partial ophiolite exposed on southern Vancouver Island, is the most northerly exposure of the Eocene Crescent Terrane. The role of the Crescent Terrane in crustal genesis and Cordilleran tectonics would be affected by its tectonic setting, however that setting is in debate. Analysis of trace element compositions of basalt from the Metchosin Igneous Complex by ICP-MS was used to determine the tectonic setting in which the complex formed. REE and HFSE compositions are transitional between N-MORB and E-MORB and do not suggest a unique tectonic setting. Strong enrichments of Nb and Ta relative to N-MORB are contrary to formation in a subduction zone. In conjunction with existing plate motion data, this makes a rifted-margin origin unlikely. Interaction at a distance between the Yellowstone hot spot and the Kula-Farallon ridge is proposed to satisfy all the geological and geochemical data. Many studies of ophiolites have interpreted high-temperature phases as hydrothermal in origin despite high permeability and low temperatures in sea floor volcanics. Metamorphic assemblages and compositions of metamorphic minerals were used to determine if alteration in the Metchosin Igneous Complex was related to sea floor alteration or obduction. Chlorite geothermometry and amphibole compositions show that peak metamorphic temperatures increase from east to west across the complex. The metamorphic facies increase from prehnite-actinolite and greenschist in the east to amphibolite in the west, corresponding with the temperatures inferred from mineral compositions. The temperature gradient is perpendicular to stratigraphy, whereas hydrothermal patterns are expected to be parallel to stratigraphy. Therefore the pattern of alteration in the Metchosin Igneous Complex is unrelated to sea floor alteration. Metamorphism during obduction has overprinted any hydrothermal alteration patterns. The east-west thermal gradient is attributed to tilting of the complex, either by tectonic forces or by unequal exhumation due to orographic effects.

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10

Taite, Susan Patricia. "Geology of the central Moresby Island region, Queen Charlotte Islands, (Haida Gwaii) British Columbia." Thesis, 1991. http://hdl.handle.net/2429/1633.

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The Queen Charlotte Islands represent the most outboard exposure of Wrangellia in the Canadian Cordillera. This study analyzes the structural and stratigraphic history of the central Moresby Island area, and correlates this history with ongoing and previous studies in the Queen Charlotte Islands. The stratigraphic succession preserved in central Moresby Island comprises marine volcanic and sedimentary rocks of the Triassic Karmutsen Formation and Kunga Group, Middle Jurassic arc volcanic rocks of the Yakoun Group, marine sedimentary rocks of the Longarm Formation and Queen Charlotte Group, and Tertiary volcanic rocks. The Karmutsen Formation and Kunga Group rocks exposed in central Moresby Island formed during a widespread Triassic volcanic event followed by marine carbonate and clastic sedimentation. Coarse clastic lithologies in the Kunga Group indicate a volcanic provenance as early as the Norian. The Early to Middle Jurassic marine sedimentary rocks of the Maude Group, present elsewhere in the Queen Charlotte Islands, are absent in central Moresby Island. Oldest rocks of the clastic Longarm Formation in central Moresby Island are of Hauterivian age, and the conformably overlying Queen Charlotte Group extends into at least the Turonian. Both field and petrographic evidence suggest two distinct suites of Tertiary volcanic rocks exist in central Moresby Island. Dominant megascopic structures in central Moresby Island are dominated by north, northeast and northwest-trending fault sets. Folding is common in stratified Kunga Group lithologies, and only of minor importance in younger successions. The deformational history outlines five events: Middle Jurassic shortening, Middle to Late Jurassic extension, post-Cretaceous and pre-Tertiary shortening, post-Cretaceous and pre-(syn ?) Tertiary extension, and a syn (?) to post-Tertiary extension. The structural history outlined for the central Moresby Island area provides several refinements to pre-existing models. It provides evidence that Middle Jurassic shortening continued into and possibly outlasted Yakoun Group arc volcanism. Cretaceous block faulting, documented on Graham Island and northern Moresby Island, extended into central Moresby Island. Asymmetric south-directed Tertiary extension, documented on southern Moresby Island, also extended into central Moresby Island, and has implications to the offset history of regional faults.

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Books on the topic "Geology – British Columbia – Gambier Island"

1

Yorath, C. J. Lithoprobe, southern Vancouver Island, British Columbia: Geology. [Ottawa]: Geological Survey of Canada, 1999.

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2

Canada, Geological Survey of, ed. Geology of Graham Island, British Columbia. Ottawa: Govt. Print. Bureau, 1997.

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Hults, Chad K. Paleomagnetism of the Jura-Cretaceous Kyuquot Group, Vancouver Island, British Columbia. 2002.

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Bloomer, Gail Elizabeth. Geology, mineralogy, and geochemistry of the iron crown calcic iron skarn deposit, Vancouver Island, British Columbia. 1986.

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Book chapters on the topic "Geology – British Columbia – Gambier Island"

1

Groome, Wesley G., Derek J. Thorkelson, Richard M. Friedman, James K. Mortensen, Nick W. D. Massey, Daniel D. Marshall, and Paul W. Layer. "Magmatic and tectonic history of the Leech River Complex, Vancouver Island, British Columbia: Evidence for ridge-trench intersection and accretion of the Crescent Terrane." In Geology of a transpressional orogen developed during ridge-trench interaction along the North Pacific margin. Geological Society of America, 2003. http://dx.doi.org/10.1130/0-8137-2371-x.327.

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Reports on the topic "Geology – British Columbia – Gambier Island"

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Thompson, R. I., and P. D. Lewis. Geology, Louise Island, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/131494.

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Haggart, J. W. Geology, Louise Island, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2002. http://dx.doi.org/10.4095/213676.

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Yorath, C. J., A. Sutherland Brown, and N. W. D. Massey. LITHOPROBE, southern Vancouver Island, British Columbia: geology. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1999. http://dx.doi.org/10.4095/210350.

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Hickson, C. J., and P. D. Lewis. Geology, Frederick Island [West Half], British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/131500.

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Lewis, P. D., and C. J. Hickson. Geology, Langara Island [West Half], British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/131501.

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Huntley, D. H., A. S. Hickin, W. Chow, and M. Mirmohammadi. Surficial geology, Two Island Lake, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2013. http://dx.doi.org/10.4095/292401.

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Haggart, J. W. Geology, Burnaby Island and Gowgaia Bay, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2002. http://dx.doi.org/10.4095/213677.

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Trettin, H. P., and J. A. Roddick. Bedrock geology, Cortes Island, Strait of Georgia, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2002. http://dx.doi.org/10.4095/213489.

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Souther, J. G. Geology of central Lyell Island, Queen Charlotte Islands, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/132824.

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Hesthammer, J., J. Indrelid, P. D. Lewis, and J. W. Haggart. Geology of southern Graham Island, Queen Charlotte Islands, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/131689.

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