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Zeitschriftenartikel zum Thema "Schiste de (Canada)"
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Petrie, Meredith Blair, Jane A. Gilotti, William C. McClelland, Cees Van Staal und Sierra J. Isard. „Geologic Setting of Eclogite-facies Assemblages in the St. Cyr Klippe, Yukon–Tanana Terrane, Yukon, Canada“. Geoscience Canada 42, Nr. 3 (29.07.2015): 327. http://dx.doi.org/10.12789/geocanj.2015.42.073.
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The St. Cyr area near Quiet Lake hosts well preserved to variably retrogressed eclogite found as sub-metre to hundreds of metre-long lenses within quartzofeldspathic schist in south-central Yukon, Canada. The St. Cyr klippe consists of structurally imbricated, polydeformed and polymetamorphosed units of continental arc crust and ultramafic–mafic rocks. Eclogite-bearing quartzofeldspathic schist forms thrust slices in a 30 km long by 6 km wide, northwest-striking outcrop belt. The schist unit comprises metasedimentary and felsic intrusive rocks that are intercalated on the metre to tens of metres scale. Ultramafic rocks, serpentinite and associated greenschist-facies metagabbro form imbricated tectonic slices within the eclogite-bearing quartzofeldspathic unit, which led to a previously held hypothesis that eclogite was exhumed within a tectonic mélange. The presence of phengite and Permian zircon crystallized under eclogite-facies metamorphic conditions in the quartzofeldspathic host rocks indicate that the eclogite was metamorphosed in situ together with the schist as a coherent unit that was part of the continental arc crust of the Yukon–Tanana terrane, rather than a mélange associated with the subduction of oceanic crust of the Slide Mountain terrane. Petrological, geochemical, geochronological and structural similarities link St. Cyr eclogite to other high-pressure localities within Yukon, indicating the high-pressure assemblages form a larger lithotectonic unit within the Yukon–Tanana terrane.RÉSUMÉLa région de St-Cyr renferme des éclogites bien conservées à légèrement rétrogradées qui se présentent sous forme de lentilles allant de la fraction de mètre à quelques centaines de mètres de longueur, au sein d’un schiste quartzofeldspathique du centre-sud du Yukon au Canada. La klippe de St-Cyr est structurellement constituée d’unités imbriquées, polydéformées et polymétamorphisées de croûte d’arc continental et de roches ultramafiques à mafiques. Les schistes quartzofeldspathiques à lentilles d’éclogites forment des écailles de chevauchement d’une bande de 30 km de longueur par 6 km de largeur de direction nord-ouest. Les schistes sont constitués de roches métasédimentaires et de roches intrusives felsiques intercalées à des intervalles qui vont du mètre à quelques dizaines de mètres. Les roches ultramafiques, serpentinites et métagabbros au facies à schiste vert forment des écailles tectoniques imbriquées au sein de l’unité quartzofeldspathique à lentilles d’éclogite, d’où une précédente hypothèse voulant que les éclogites soient un produit d’exhumation à partir d’un mélange tectonique. La présence de phengite et de zircon permien cristallisé sous conditions métamorphiques du faciès à éclogite au sein de la roche hôte quartzofeldspathique indiquent que l’éclogite a été métamorphisée en place, avec le schiste comme unité cohérente du terrane de croûte d’arc continental de Yukon–Tanana, plutôt qu’un mélange associé à une subduction de croûte océanique du terrane de Slide Mountain. Des similarités pétrologiques, géochimiques, géochronologiques et structurales lient les éclogites de St-Cyr à d’autres lieux de hautes pressions au Yukon, ce qui indique que les assemblages de hautes pressions forment une unité lithotectonique plus grande au sein du terrane de Yukon–Tanana.
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KRETZ, R. „A garnet population in Yellowknife schist, Canada“. Journal of Metamorphic Geology 11, Nr. 1 (Januar 1993): 101–20. http://dx.doi.org/10.1111/j.1525-1314.1993.tb00134.x.
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Seppälä, Matti. „Rock pingos in northern Ungava Peninsula, Quebec, Canada“. Canadian Journal of Earth Sciences 25, Nr. 4 (01.04.1988): 629–34. http://dx.doi.org/10.1139/e88-060.
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The author reports the first pingos found in Ungava Peninsula, Quebec. The pingos, 15–30 m high, are open-system rock pingos built of very fractured schist and hornblende gabbro. At the time of observation, water was draining out of their slopes. Peat from the top of the smaller pingo was dated at 2880 ± 100 years BP.
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Erdmer, Philippe, Larry Heaman, Robert A. Creaser, Robert I. Thompson und Ken L. Daughtry. „Eocambrian granite clasts in southern British Columbia shed light on Cordilleran hinterland crust“. Canadian Journal of Earth Sciences 38, Nr. 7 (01.07.2001): 1007–16. http://dx.doi.org/10.1139/e01-005.
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The Spa Creek assemblage is a distinctive thin pericratonic succession that crosses the Okanagan Valley in the hinterland of the southern Cordilleran Orogen in Canada. The succession was ductilely deformed and metamorphosed before deposition of overlying Triassic dark metaclastic strata. A metaconglomerate within the succession, locally composed of more than 90% biotite granite clasts, yielded five fractions of euhedral zircon that define a precise UPb upper intercept of 555.6 ± 2.5 Ma, inferred to be the age of a nearby pluton. Other clasts in the metaconglomerate are generally more abundant, consisting of quartzite, amphibole schist, chlorite schist, sericite schist, biotite schist, and quartzfeldspar porphyry. They are likely host rocks of the pluton and, if so, are Late Proterozoic or older. The granite is interpreted as a terminal product of the Eocambrian rifting that preceded Paleozoic miogeoclinal sedimentation farther inboard. The continuity of pericratonic rocks west of the miogeocline and the occurrence of Proterozoic cratonic rocks at the surface west of the Okanagan Valley show that the ancient continental margin extends into a region where most of the crustal lithosphere was until now thought to consist of accreted Phanerozoic arc and accretionary complexes.
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RUTHERFORD, G. K., und D. J. THACKER. „CHARACTERISTICS OF TWO MAFIC SAPROLITES AND THEIR ASSOCIATED SOIL PROFILES IN CANADA“. Canadian Journal of Soil Science 68, Nr. 2 (01.05.1988): 223–31. http://dx.doi.org/10.4141/cjss88-022.
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Two soil profiles developed from mafic saprolites were examined at Economy Mountain, Nova Scotia and Kamloops, British Colombia. The underlying rocks, a tholeiitic basalt in Nova Scotia and a basic greenstone schist at Kamloops, were apparently transformed to predominantly smectitic saprolites in pre-Holocene times. During the Wisconsinan glacial stage the sola and a significant portion of the saprolites were removed. Holocene pedogenesis has produced new sola on the saprolites. In Nova Scotia, the solum may have some locally derived till or colluvium component. Key words: Mafic pedogenesis, Paleosols, soil mineralogy
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Jattiot, Romain, Nathalie Coquel-Poussy, Isabelle Kruta, Isabelle Rouget, Alison J. Rowe und Jean-David Moreau. „The first gladius-bearing coleoid cephalopods from the lower Toarcian “Schistes Cartons” Formation of the Causses Basin (southeastern France)“. PeerJ 12 (26.02.2024): e16894. http://dx.doi.org/10.7717/peerj.16894.
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The fossil record of gladius-bearing coleoids is scarce and based only on a few localities with geological horizons particularly favourable to their preservation (the so-called Konservat-Lagerstätten), which naturally leads to strongly limited data on geographical distributions. This emphasizes the importance of every new locality providing gladius-bearing coleoids. Here, we assess for the first time the gladius-bearing coleoid taxonomic diversity within the lower Toarcian “Schistes Cartons” of the Causses Basin (southeastern France). The material includes two fragmentary gladii, identified as Paraplesioteuthis sagittata and ?Loligosepia sp. indet. Just with these two specimens, two (Prototeuthina and Loligosepiina) of the three (Prototeuthina, Loligosepiina and Teudopseina) suborders of Mesozoic gladius-bearing coleoids are represented. Thus, our results hint at a rich early Toarcian gladius-bearing coleoid diversity in the Causses Basin and point out the need for further field investigations in the lower Toarcian “Schistes Cartons” in this area. This new record of Paraplesioteuthis sagittata is only the second one in Europe and the third in the world (western Canada, Germany and now France). Based on these occurrences, we tentatively suggest that P. sagittata originated in the Mediterranean domain and moved to the Arctic realm through the Viking Corridor to eventually move even farther to North America.
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Pan, Yuanming, Michael E. Fleet und Neil D. Macrae. „Oriented monazite inclusions in apatite porphyroblasts from the Hemlo gold deposit, Ontario, Canada“. Mineralogical Magazine 57, Nr. 389 (Dezember 1993): 697–707. http://dx.doi.org/10.1180/minmag.1993.057.389.14.
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AbstractOriented inclusions of monazite occur in the dark core of apatite porphyroblasts in a muscovite schist from the Archaean Hemlo gold deposit, Ontario, Canada. The monazite inclusions are elongated along the b-axis and parallel to the c-axis of the apatite host; the complete orientation relationship of the monazite/apatite intergrowth is bMnz//cAp, cMnz//aAp. From analysis by SIMS and EMP, the dark core of the apatite porphyroblasts is depleted in LREE (LaN/YbN = 0.56). The monazite inclusions are correspondingly enriched in LREE, but markedly depleted in HREE, compared with monazite grains in the rock matrix and cross-cutting veins. The monazite inclusions precipitated by oriented reaction through rock-fluid interactions during a late hydrothermal alteration. Their unusual REE composition is probably related to both a preferential leaching of LREE from the dark core and a selective transfer of HREE out of the apatite porphyroblasts.
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Minter, D. W., und P. F. Cannon. „Myriospora scabrida . [Descriptions of Fungi and Bacteria].“ Descriptions of Fungi and Bacteria 227 (Januar 2021): 2265. http://dx.doi.org/10.1079/dfb/20210391610.
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Abstract A description is provided for Myriospora scabrida , a lichen-forming species occurring on various rock types, particularly sandstone, often but not exclusively associated with heavy metal deposits in old mine spoil heaps and on worked stone. Some information on its dispersal and transmission and conservation status is given, along with details of its geographical distribution (Tunisia, Greenland, Norway, Afghanistan, Iran, Russia, Austria, Bosnia-Hercegovina, Czech Republic, Finland, France, Germany, Iceland, Irish Republic, Italy, Norway, Russia, Spain, Sweden, Ukraine, UK, Canada (Northwest Territories, Nunavut), Mexico, USA (Alaska, Arizona, California, Colorado, New York, Wyoming)) and associated organisms and substrata (construction materials, mining spoil, Endococcus stigma , rock (granite, sandstone, schist), soil and Chlorococcoid algae).
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Kretz, R. „THE MORPHOLOGY AND GROWTH OF GARNET, (Fe0.74Mg0.13Mn0.09Ca0.04)3Al2Si3O12, IN ARCHEAN SCHIST NEAR YELLOWKNIFE, NORTHWEST TERRITORIES, CANADA“. Canadian Mineralogist 48, Nr. 3 (01.06.2010): 537–48. http://dx.doi.org/10.3749/canmin.48.3.537.
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Kretz, R., R. Hartree und P. Jones. „Metasomatic crystallization of muscovite in granite and tourmaline in schist related to pegmatite emplacement near Yellowknife, Canada“. Contributions to Mineralogy and Petrology 102, Nr. 2 (Juni 1989): 191–204. http://dx.doi.org/10.1007/bf00375340.
Der volle Inhalt der QuelleDissertationen zum Thema "Schiste de (Canada)"
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Thorette, Jacques. „Contribution à l'étude de l'hydrothermalisme océanique : exemple du district minéralisé de York-Harbour (massif ophiolitique de Blow-Me-Down, Bay-of-Islands, Terre-Neuve)“. Brest, 1986. http://www.theses.fr/1986BRES2002.
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Les mineralisations a cu-fe-zn de york-harbour sont encaissees dans l'unite volcanique situee au sommet de l'ophiolite cambrienne de blow-me-down. Celle-ci s'est formee a l'axe d'une dorsale oceanique a proximite d'une faille transformante. L'organisation en synclinal du secteur mineralise resulte du rejet des failles synvolcaniques en direction nord 135 et nord 45
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MacKenzie, Douglas James, und n/a. „Structural controls on orogenic gold mineralisation in the Otago Schist, New Zealand and the Klondike Schist, Canada“. University of Otago. Department of Geology, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080704.085108.
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Orogenic gold mineralisation in schist terranes with few or no contemporaneous igneous intrusions is poorly understood. It is proposed in this thesis that the structural evolution of such terranes controls the generation of hydrothermal fluid pathways and thus the location of orogenic mineral deposits. Gold mineralisation in the Otago Schist, New Zealand and the Klondike Schist, Canada occurred in the latter phases of greenschist facies metamorphism as well as after metamorphism during Paleozoic-Mesozoic exhumation. In Otago, gold mineralisation occurred at a number of different times and structural levels as the schist belt was exhumed and rocks were brought up through the brittle-ductile transition. In Klondike Schist, gold mineralisation occurred in relatively brittle rocks after a period of regional compression and crustal shortening caused by the stacking of thrust sheets. Gold mineralisation in both schist belts is not associated with any coeval igneous activity.
The earliest stage of gold mineralisation in the Otago Schist occurred in the Jurassic when mineralising fluids were progressively focussed into late metamorphic ductile shear zones such as the Hyde-Macraes Shear Zone (HMSZ), east Otago and Rise and Shine Shear Zone (RSSZ), central Otago. Both of these gold-bearing mineralised zones occur along mappable structural discontinuities or boundaries that separate structurally, metamorphically and lithologically distinct blocks. The HMSZ occurs in the hangingwall of an underlying low angle normal fault that juxtaposes mineralised lower greenschist facies rocks on to unmineralised upper greenschist facies rock. The RSSZ occurs in the footwall of an overlying low angle normal fault that juxtaposes unmineralised lower greenschist facies rocks on to mineralised upper greenschist facies rock. The two shear zones did not form as part of a single homogeneous structure. There are several other prospective late metamorphic boundaries that are different from later brittle faults that disrupt the schist. Late metamorphic gold mineralisation is characterised by both ductile and brittle structures, foliation-parallel shears, disseminated gold with sulphides in deformed schist and minor steeply dipping extensional veins. This style of mineralisation is the most prospective but can be subtle in areas without quartz veins. Hydrothermally altered rocks are enriched in gold, arsenic, tungsten and sulphur with minor enrichment of bismuth, antimony, mercury and molybdenum. Disseminated mineralisation in the HMSZ is associated with hydrothermal graphite however there is no hydrothermal graphite in the RSSZ.
The next stage of gold mineralisation occurred in the Cretaceous during post-metamorphic exhumation of the schist belt and is characterised by steeply dipping, fault-controlled quartz veins, silicified breccias and negligible wall rock alteration. Most post-metamorphic veins strike northwest such as the ~25 km long Taieri river gold vein swarm, but there are other stibnite and gold mineralised structures that strike northeast (e.g., Manuherikia Fault system) and east-west (e.g., Old Man Range vein systems). The latest recognised stage of gold mineralisation is controlled by structures related to the initiation of the Alpine Fault in the Miocene and is characterised by steeply dipping quartz veins with abundant ankeritic carbonate in veins and ankeritic carbonate with gold in altered rocks. Hydrothermally altered rocks are enriched in arsenic, carbon dioxide and sulphur with minor enrichment of antimony. Gold-bearing veins at Bullendale, central Otago are of this type and are associated with a broad alteration zone.
Gold-silver and gold-silver-mercury alloys occur in both Caples and Torlesse Terranes of the Otago Schist. Almost all mercury-bearing gold occurs in east Otago vein systems and mercury-free gold occurs in central and northwest Otago veins, irrespective of host terrane. There is no relationship between depth of vein emplacement and mercury content of gold.
The Klondike Schist was emplaced as a series of stacked thrust slices in the Jurassic and thrust-related fabrics are preserved in all thrust slices. Strongly deformed carbonaceous schist horizons are spatially associated with thrust faults and graphite within these units is concentrated along spaced cleavage surfaces. Kink folding is best developed in the uppermost slices of Klondike Schist and overprints thrust-related fabrics. Gold-bearing veins formed in extension fractures controlled principally by pre-existing weaknesses such as kink fold axial surfaces. Normal faults correlated with a period of Late Cretaceous regional extension crosscut kink folds and offset gold mineralised veins. The main stage of mineralisation occurred after major regional compression and thrust stacking and before Cretaceous normal faulting. Gold-bearing veins are widely dispersed throughout the uppermost slices of Klondike Schist and are considered to be a sufficient source for Klondike gold placer deposits.
Disseminated gold with pyrite is associated with gold-bearing veins in some Klondike Schist and this disseminated mineralisation expands the exploration target for these veins. Disseminated gold with pyrite, without quartz veins, occurs in some schist lithologies and is associated with chlorite alteration and weak silicification. The arsenic content of gold-mineralised Klondike Schist is much lower than mineralised Otago Schist and background concentrations of arsenic are much lower in Klondike Schist as well. No shear-related mineralisation has been discovered in Klondike Schist but due to its relatively poor exposure, this belt remains prospective for this style of mineralisation.
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Girault, Michel. „Pétrographie et géochimie de volcanites archéennes polymétamorphiques : reconstitution de l'histoire pétrologique (zone minière Manitou-Louvem, Val d'Or, Québec)“. Phd thesis, Grenoble 1, 1986. http://tel.archives-ouvertes.fr/tel-00739836.
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La zone Manitou-Louvem, à minéralisations de sulfures massifs, comporte une série volcanique sous-marine (laves, pyroclastites et siIls) appartenant, pour l'essentiel, à la formation de Val d'Or. A la base, des basaltes à amphiboles et boules d'épidote dérivent, par faible fusion partielle, d'une source mantellique enrichie en éléments hygromagmaphiles légers. Vient ensuite l'intime association de laves intermédiaires et felsiques, de pyroclastites grossières généralement felsiques et monogéniques, et de filon-couches hypovolcaniques de diorite. Toutes ces roches sont comagmatiques, et liées aux basaltes de la base. Les filon-couches font la transition entre la diorite de Bourlamaque qui noyaute le complexe volcanique central de Val d'Or, et le volcanisme effusif. Le cachet géochimique est calcoalcalin, mais les tendances d'évolution (cristallisation fractionnée anhydre) sont tholéiitiques : elles varient selon la stratigraphie, par évolution des modalités de fractionnement et appauvrissement de la source mantellique. Au sommet, la formation de Héva, avec des basaltes évolués hyperalumineux d'affinité tholéiitique plus franche, marque le retour progressif au volcanisme abyssal, après celui d'arc insulaire (formation de Val d'Or) : ils proviennent d'un centre éruptif et d'une lignée d'évolution différents. Un modèle de bassin marginal permettrait de concilier tous ces caractères et pourrait expliquer la contradiction tholéiitique. calcoalcalÎn, qui mériterait une étude détaillée. La minéralogie est issue des altérations et métamorphismes successifs, que l'on caractérise grâce à une étude précise de minéraux secondaires: spi!itisation, métasomatoses liées ou non aux minéralisations, métamorphisme régional. Celui-ci est du faciès des schistes verts (zone à biotite). Les problèmes d'interprétation pour la minéralogie des " roches vertes" (termes abusivement banalisé) sont examinés en détail. L'auteur estime que la prospection minière devrait tirer profit de telles études, qu'elle devrait intégrer à ses méthodes comme un élément supplémentaire de reconnaissance des milieux minéralisés par opposition aux zones stériles.
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Ramírez-Guerrero, Greta M. „The systematics and evolution of Cambrian graptolites from the Burgess Shale of Canada“. Thèse, 2019. http://hdl.handle.net/1866/22745.
Der volle Inhalt der QuelleBücher zum Thema "Schiste de (Canada)"
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Rogers, R. Vashon. Schism: A sermon preached at Bytown before the Eastern Clerical Association, on Thursday, January 10th, 1839 and published at their request. [Cobourg, Ont.?: s.n., 1987.
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Schreiner, Jan. Ahoi Berlin: Hauptstadt am Wasser--Bauten, Schiffe, Häfen, Brücken. Berlin: Welz, 1999.
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Cotton, Matthew, Kathy Brasier, John Whitton und Ioan M. Charnley-Parry. Governing Shale Gas: Development, Citizen Participation and Decision Making in the US, Canada, Australia and Europe. Taylor & Francis Group, 2018.
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Cotton, Matthew, Kathy Brasier, John Whitton und Ioan M. Charnley-Parry. Governing Shale Gas: Development, Citizen Participation and Decision Making in the US, Canada, Australia and Europe. Taylor & Francis Group, 2018.
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Gould, Stephen Jay. La Vie est belle : Les Surprises de l'évolution. Seuil, 1998.
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Gould, Stephen Jay. La Vie est belle : Les Surprises de l'évolution. Seuil, 1991.
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Feix, Ingrid. Niederfinow: Wo die Schiffe Fahrstuhl fahren. Bebra Verlag, 2012.
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Mack, Charles S. When Political Parties Die. ABC-CLIO, LLC, 2010. http://dx.doi.org/10.5040/9798216034957.
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This book presents a theory of political disalignment and a revised theory of party realignment, using four case studies from the United States, Canada, Great Britain, and Italy to illustrate these concepts. Why do major political parties die? The shelf life of minor parties in democracies tends to be short, but major parties tend to be highly durable. The Democratic Party of the United States and the Conservative Party of the United Kingdom have been going strong for two centuries. Major parties perpetuate themselves by maintaining a consistent ideology on major national issues, even at the cost of periodic defeats at the polls. In American politics, ideological polarization maintains the vitality of the two major parties and renders them almost immune to threats from new parties, even as it impedes consensus and compromise on public issues. Spectacular instances of sudden death in major parties have nevertheless occurred in the United States, the United Kingdom, Canada, and Italy, and they all exhibit similar characteristics. The fatal event—which author Charles S. Mack calls "disalignment"—occurs when a schism opens between party leaders and traditional core-base voters on an issue of overriding national importance. Major parties survive periodic defeats, but they cannot survive disalignment.
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Fiala, Michele L., und Martin Schuring. Great Oboists on Music and Musicianship. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190915094.001.0001.
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This volume contains interviews with twenty-six of the most prominent oboists from around the world. The chapters are in prose format and highlight different aspects of each musician’s career, focusing on musicianship and pedagogy in ways that are applicable to all musicians. The interviews contain topics such as creating musical interpretations and shaping phrases, the relationship of vocal to instrumental music, taking orchestral auditions, and being a good ensemble player/colleague. The subjects describe their pedagogy and their thoughts on breathing and support on wind instruments, developing finger technique, and creating a useful warm-up routine. The oboists discuss their ideals in reed making, articulation, and vibrato. They also share stories from their lives and careers. The oboists and English hornists profiled from North America are Pedro Diaz, Elaine Douvas, and Nathan Hughes (Metropolitan Opera Orchestra); John Ferrillo (Boston Symphony Orchestra); Carolyn Hove (Los Angeles Philharmonic); Richard Killmer (Eastman School); Nancy Ambrose King (University of Michigan); Frank Rosenwein and Robert Walters (Cleveland Orchestra); Humbert Lucarelli (soloist); Grover Schiltz (formerly Chicago Symphony); Eugene Izotov (San Francisco Symphony, originally from Russia); Allan Vogel (Los Angeles Chamber Orchestra retired); David Weiss (formerly Los Angeles Philharmonic); Randall Wolfgang (New York City Ballet and formerly Orpheus Chamber Orchestra); Alex Klein (Brazil, formerly Chicago Symphony and currently Calgary, Canada); and Sarah Jeffrey, Toronto Symphony Orchestra. The performers based in Europe are Neil Black, Nicholas Daniel, and Gordon Hunt (England); Maurice Bourgue and David Walter (France); Thomas Indermühle (Switzerland); László Hadady (Hungary and France); and Omar Zoboli (Italy). From Australia is Diana Doherty of the Sydney Symphony Orchestra.
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Case, Jay R. Methodists and Holiness in North America. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780199683710.003.0009.
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Baptists in nineteenth-century North America were known as eager proselytizers. They were evangelistic, committed to the idea of a believers’ church in which believers’ baptism was the norm for church membership and for the most part fervent revivalists. Baptist numbers soared in the early nineteenth-century United States though at the cost of generating much internal dissent, while in Canada New Light preachers such as Henry Alline were influential, but often had to make headway against an Anglican establishment. The Baptist commitment to freedom of conscience and gathered congregations had been hardened over the centuries by the experience of persecution and that meant that they were loath to qualify the freedom of individual congregations. The chapter concentrates on exposing the numerous divisions in the Baptist family, the most basic of which was the disagreement over the nature of the atonement, which separated General (Arminian) from Particular (Calvinist) Baptists. Revivals induced further divisions between Regular Baptists who were reserved about them and Separate Baptists who saw dramatic conversions and fervent outbursts as external signs of inward grace. Calvinistic Baptists took a dim view of efforts to induce conversions as laying too much trust in human agency. Though enthusiasm for missions gripped American and Canadian Baptists alike, there were those who feared that missionary societies would erode congregational autonomy. Dissent over slavery and abolition constituted the biggest single division in North American Baptist life. Southern Baptists developed biblical defences of slavery and were annoyed at attempts to keep slaveholders out of missionary work. As a result they formed a separate denomination, the Southern Baptist Convention, in 1845. Baptists had been successful in converting black slaves and black Baptists such as the northerner Nathaniel Paul were outspoken abolitionists. In the South after the Civil War, though, blacks marched out of white denominations to form associations of their own, often with white encouragement. Finally, not the least cause of internal dissent were disputes over ecclesiology, with J.M. Graves and J.R. Pendleton, the founders of Old Landmarkism, insisting with renewed radicalism on denominational autonomy. The chapter suggests that by the end of the century, Baptists embodied the tensions in Dissenting traditions. Their dissent in the public square intensified the possibility of internal disagreement, even schism, their tradition of Christian democracy proving salvifically liberating but ecclesiastically messy. While they stood for liberty and religious equality, they were active in anti-Catholic politics and in seeking to extend state activism in society through the Social Gospel movement.
Buchteile zum Thema "Schiste de (Canada)"
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„NOT AN EXOTIC VERSION OF CANADA“. In Schism, 111–40. MQUP, 2019. http://dx.doi.org/10.2307/j.ctvqmp1cb.10.
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Miville, Serge. „Le Grand « Schisme » ?“ In Retour sur les États généraux du Canada français, 59–84. Presses de l'Université du Québec, 2016. http://dx.doi.org/10.1515/9782760543829-005.
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„From Inch’Allah Dimanche to Sharia in Canada: Empire Management, Gender Representations, and Communication Strategies in the Twenty-First Century“. In From Solidarity to Schisms, 237–73. Brill | Rodopi, 2009. http://dx.doi.org/10.1163/9789042027039_016.
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„Margaret Atwood’s Oryx and Crake: Canadian Post-9/11 Worries“. In From Solidarity to Schisms, 219–35. Brill | Rodopi, 2009. http://dx.doi.org/10.1163/9789042027039_015.
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Poulsen, K. Howard, Rodney Barber und François Robert. „Chapter 4: Hemlo Gold System, Superior Province, Canada“. In Geology of the World’s Major Gold Deposits and Provinces, 81–100. Society of Economic Geologists, 2020. http://dx.doi.org/10.5382/sp.23.04.
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Abstract Hemlo combines several rare to unique features in the spectrum of Archean greenstone gold deposits. It is an isolated, approximately 800-metric ton (t) gold system in a region of otherwise limited known gold endowment. The geology of Hemlo is dominated by deformed and metamorphosed sedimentary, felsic volcanic, and volcaniclastic units, a premineral coherent felsic porphyry, and a swarm of mainly postmineral, intermediate, feldspar-phyric dikes. Ore is dominantly in the form of gold-bearing lenses of pyritic, feldspathic schist derived from deformation of both the clastic rocks and the felsic porphyry. The deposit and its host rocks were metamorphosed at moderate pressures to assemblages diagnostic of the mid-amphibolite facies, followed by progressive retrogression to those of the greenschist facies. The result is a wide range of silicate mineral species in ambiguous textural relationships. The gold system itself is known for ore and related alteration minerals with significant concentrations of Mo-As-Sb-Hg-Tl-V-Ba-K-Na. The inferences derived from lithologic mapping, structural chronology, U-Pb geochronology, and mineral paragenesis favors an interpretation of Hemlo as a deformed and metamorphosed gold system formed from oxidized hydrothermal fluids in an upper crustal setting. Uncertainty remains as to the exact nature and geometry of that ore-forming hydrothermal system, however, and the role subsequent metamorphism and deformation have played in the local remobilization of ore constituents into their present paragenetically late structural sites.
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White, Chris E., Sandra M. Barr, James L. Crowley, Deanne van Rooyen und Trevor G. MacHattie. „U-Pb zircon ages and Sm-Nd isotopic data from the Cobequid Highlands, Nova Scotia, Canada: New contributions to understanding the Neoproterozoic geologic history of Avalonia“. In New Developments in the Appalachian-Caledonian- Variscan Orogen. Geological Society of America, 2022. http://dx.doi.org/10.1130/2021.2554(07).
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ABSTRACT Forty-three new U-Pb zircon ages from metasedimentary and igneous rock units throughout the Cobequid Highlands of northern mainland Nova Scotia, Canada, provide new insights into the Neoproterozoic evolution of this long-enigmatic part of Avalonia in the northern Appalachian orogen. Contrasts in ages and rock types resulted in the identification of fault-bounded Neoproterozoic assemblages of units forming the Bass River, Jeffers, and Mount Ephraim blocks. In the Bass River block, quartzite, metawacke, and minor calc-silicate rocks and marble (Gamble Brook Formation) with a maximum depositional age of 945 ± 12 Ma are associated with subaqueous mafic volcanic rocks, siltstone, and ironstone (Folly River Formation) and intruded by 615–600 Ma calc-alkalic subduction-related dioritic to granitic rocks of the Bass River plutonic suite. The contrasting Jeffers block forms most of the Cobequid Highlands and consists mainly of intermediate to felsic volcanic, epiclastic, and minor plutonic rocks. The western and eastern areas of that block yielded ages mainly ca. 607–592 Ma for both volcanic and plutonic rocks, whereas the central area has ages of ca. 630–625 Ma from both volcanic and plutonic rocks and inheritance in overlying Devonian conglomerate. The Mount Ephraim block forms the eastern part of the highlands and includes possible ca. 800 Ma quartzofeldspathic, semipelitic and pelitic gneiss and schist of the Mount Thom Formation, ca. 752 Ma volcanic arc rocks of the Dalhousie Mountain Formation and related 752–730 Ma gabbroic/dioritic to granitic plutons of the Mount Ephraim plutonic suite and Six Mile Brook pluton, as well as ca. 631 Ma granitoid rocks of the Gunshot Brook pluton. The pre–750 Ma high-grade regional metamorphism and deformation and 752–730 Ma subduction-related magmatism recorded in the Mount Ephraim block were previously unrecognized in Avalonia. Evidence from zircon inheritance and Sm-Nd isotopic data in igneous units suggests linkages among these now-separate areas, and comparison with other parts of Avalonia in the northern Appalachian orogen suggests similarity to southeastern New England.
Konferenzberichte zum Thema "Schiste de (Canada)"
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Winhausen, L., K. Khaledi, M. Jalali und F. Amann. „Insights into the Anisotropic, Hydro-Mechanical Behavior of Opalinus Clay Through Experimental and Microstructural Investigations“. In 56th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2022. http://dx.doi.org/10.56952/arma-2022-2075.
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ABSTRACT: For analyzing the influence of structural anisotropy on the hydro-mechanical behavior of a clay shale, we performed three consolidated, undrained triaxial compression tests with different geometric specimen configurations. Opalinus Clay specimens were tested with bedding plane orientations of 30°, 60°, and 90° with respect to the horizontal. Results indicated different peak strengths at failure with highest and lowest values for the 90° and 30°-specimens, respectively. Failure occurred at different mean effective stresses with different magnitudes of pore water pressure built up. The 30°-specimen showed a decreasing effective mean stress up to and beyond failure compared to the initial effective consolidation stress of 10 MPa, while the 90°-specimen increased in effective mean stress during undrained loading. Dilation was found to be highest in the 30°-specimen and lowest in the 60°-specimen, demonstrated by both the effective stress path and the post-experimental microstructural analysis of the shear zones. The macroscopic shear band formed parallel to the bedding plane orientation for the specimen loaded in 60°-orientation. Here, only minor microstructural fabric changes such as increased porosity or deformed grain structures were observed, which verifies the minor volume changes inferred from the effective stress path. 1. INTRODUCTION Anisotropic rocks play an important role for engineering applications in the subsurface. Transversal isotropy is commonly associated with layered sedimentary or metamorphic rock such as sand- and siltstones, mud- or clay rocks, shales, slates and schists. Clay-rich rocks are currently investigated for their application as geological barriers in nuclear waste repositories in many countries (e.g. Belgium, Canada, France, Germany, Japan, Switzerland, United Kingdom and the United States). The hydro-mechanical response around a repository tunnel during and after the excavation is influenced by the anisotropy of the rock. The anisotropy ratio, i.e., the ratio between rock properties parallel and normal to the plane of transversal isotropy, has been investigated in a variety of experimental studies (e.g. Wild and Amann, 2018; Minardi et al., 2021). However, these two endmember orientations, i.e., 0° and 90° between the loading direction and the plane of anisotropy, cover only a minor portion of geometrical constellations around the full tunnel circumference (Fig. 1.). For the majority of geometric constellations the plane of structural anisotropy, i.e., the bedding or foliation, is oblique to the tangential stress orientation. Favorable boundary conditions for a nuclear waste repository include tectonically-inactive sites, where the bedding is oriented (sub-)horizontally and the major principle stresses are oriented vertically and horizontally. Fig. 1. shows the anticipated geometric constellation in a sub-horizontal layered clay shale at large depth. Although stress rotation may take place during excavation, this simplified sketch suggests that the two endmember constellations, where maximum load is oriented parallel (P-configuration) and perpendicular (S-configuration) to the plane of anisotropy, are limited at the roof/top and the side walls of the tunnel, respectively. All other constellations represent an oblique orientation of the tangential stress in respect to the bedding plane orientation (further referred to as Z-configuration).