 | | Journal (article/letter/editorial) | | Survey of Canada, Natural Resources Canada, 3303 33rd Street NW, Calgary, Alberta, T2L 2A7, Canada (Received...sulfur spring, in Borup Fiord Pass, northern Ellesmere Island, Canadian High Arctic. Vaterite occurs in...the Borup Fiord Pass area of northern Ellesmere Island, Nunavut, Canadian High Arctic (Figs. 1, 2). These...than the other CaCO3 polymorphs, calcite and aragonite (Fig. 3) (e.g., Plummer and Busenberg, 1982; Ogino...temperatures (⬃60°C), vaterite will transform to aragonite in 60 min (Ogino et al., 1987). As a result of |  | Csank, Adam Z., Tripati, Aradhna K., Patterson, William P., Eagle, Robert A., Rybczynski, Natalia, Ballantyne, Ashley P., Eiler, John M. (2011) Estimates of Arctic land surface temperatures during the early Pliocene from two novel proxies. Earth and Planetary Science Letters, 304 (3) 291-299 doi:10.1016/j.epsl.2011.02.030 | Journal (article/letter/editorial) | | Saskatchewan, Canada S7N 5E2 f Canadian Museum of Nature, PO Box 3443, Station D, Ottawa, Ontario, Canada K1P 6P4...at the Early Pliocene Beaver Pond site on Ellesmere Island. δ18O values of cellulose from well-preserved...thermodynamic proxy results for Early Pliocene Ellesmere Island. © 2011 Elsevier B.V. All rights reserved...Pond locality (78º 33′ N; 82º 25′ W) on Ellesmere Island, Canada, so named because of the abundance of...animals. The study site is located in Central Ellesmere Island near the head of Strathcona Fiord (Fig. 1) |  | | Journal (article/letter/editorial) | | Former magnesian calcite and aragonite submarine cements in upper Paleozoic reefs of the Canadian Arctic:...Petroleum Geology Geological Survey of Canada Calgary, A l b e r t a , Canada T 2 L 2 A 7 ABSTRACT Middle Pennsylvanian...Lower Permian shelf-edge carbonates exposed on Ellesmere Island record a complex sequence of submarine to...precipitation in fracture and primary pores of botryoidal aragonite preserved as botryoidal calcite enriched in Sr...(7,500 ppm) and C 1 3 and replacive growths of aragonite in the host sediment preserved as spherulitic |  | | Journal (article/letter/editorial) | | T2N IN4 (Canada) 2Department of Physics, University of Calgary, Calgary, Alta. T2N IN4 (Canada) (Accepted...autochthonous formations of western and Arctic Canada demonstrate that: (1) For a given locality, the...Geological Survey of Canada, 3303 33rd Street NW, Calgary, Alta. T2L 2A7, Canada. 0168-9622/87/$03.50...parts of the Cordilleran Miogeocline in western Canada (surrounding Paleopacific ocean) for detailed isotope...selected from two major geological provinces of Canada: the Sverdrup Basin (Canadian Arctic Archipelago) |  | | Journal (article/letter/editorial) | | been found in the sediments on Cape Herschel, Ellesmere Island, Northwest Territories. The mineral occurred... pyroxene, hematite, chlorite, dolomite, and aragonite, attached to unknown grains. In the light fraction...author was working for the Geological Survey of Canada under the leadership of Dr Wes Blake Jr. when she...499-506. KEYWOgDS: weddeliite, Cape Herschel, Ellesmere Island. C. DIANEGAULT Department of Geology, Carleton...Carleton University, Ottawa, Ontario, Canada K1S 5B6. [Manuscript received 20 January 1986; revised 5 March |  | | Journal (article/letter/editorial) | | Sciences, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2 [Received 2 November 2007; Accepted 6 May...fish, are constructed from alternating layers of aragonite and protein. Laser ablation inductively coupled...related to the proximity of mineral deposits. Aragonite in otoliths can incorporate a wide range of trace...Popper, 1981). They typically consist of ~96% aragonite in a protein (otolin) matrix. Occasionally, vaterite...and cisco (Coregonus alpenae) F IG . 1. Map of Canada show the locations of Athapapuskow, Kississing |  | | Journal (article/letter/editorial) | | (precipitation plus run-off, less evaporation) in the Arctic region. Another possibility is that Arctic freshening...Ma Axel Heiberg Axel Heiberg Arctic Ocean Ellesmere Island Axel Heiberg Axel Heiberg Axel Heiberg Axel...576–585 Table 3 Simulated aragonite δ18O compared with δ18O of aragonite from Paleocene Arctic molluscs...the V-PDB standard. Simulated aragonite δ18O from Ellesmere Island region ‘Open’ simulation 18 ‘Closed’...Marine Estuarine Estuarine Ellesmere Island Ellesmere Island Ellesmere Island 57–58 57–58 57–58 − 0.12 |  | | Journal (article/letter/editorial) | | drawers with North America and the localities in Canada, the United States, and Mexico. The United States...to 3 cm on edge from McClintock Bay, Ellesmere Island, Nunavut Territory (labels with specimens collected...SchwarzenCampbell River, Vancouver Island, British Columbia, Canada. Private collection, Mark Mauthner...edge, from the Barbora adit, Knöttel area, Usti Region, but little commercial interest.” Greg and Lettsome...crystals to about 7 mm (Tindle 2008). Tsumeb, Otjikoto Region, Namibia, where crystals to 18 cm 334 ROCKS & |  | | Report (chapter) | | Devonian) reef complexes of Banks Island, NWT, western arctic, Canada P. COPPER1* & E. EDINGER2 1 Department... P3E 2C6, Canada 2 Geography Department, Memorial University, St John’s, A1B 3X9, Canada *Corresponding...(Middle Devonian) Inuitian/Ellesmere carbonate platform factory in arctic Canada, within the 08 to 108 equatorial...reefs in high arctic Canada retreated westwards, confined to northeastern Banks Island. These reefs, numbering...more than 2000 km west from Greenland and Ellesmere Island. Reefs are three-dimensionally preserved, |  | Lau, Graham E., Cosmidis, Julie, Grasby, Stephen E., Trivedi, Christopher B., Spear, John R., Templeton, Alexis S. (2017) Low-temperature formation and stabilization of rare allotropes of cyclooctasulfur (β-S8 and γ-S8) in the presence of organic carbon at a sulfur-rich glacial site in the Canadian High Arctic. Geochimica et Cosmochimica Acta, 200. 218-231 doi:10.1016/j.gca.2016.11.036 | Journal (article/letter/editorial) | | 80309-0399 2 Geological Survey of Canada, 3303 33rd St. NW, Calgary, Alberta, Canada, T2L 2A7 3 Civil & Environmental...Borup Fiord Pass, a valley located on northern Ellesmere Island in the Canadian High Arctic (Figure 1a). At...Canadian Lightsource (CLS) in Saskatoon, Saskatchewan, Canada. The monochromator was calibrated using the standard...nm thickness (Norcada Inc., Edmonton, Alberta, Canada). The sample was placed in a vacuum chamber for...eV through the edge region (283-293 eV; larger steps are used outside of this region). These image stacks |  | | Journal (article/letter/editorial) | | been found in the sediments on Cape Herschel, Ellesmere Island, Northwest Territories. The mineral occurred... pyroxene, hematite, chlorite, dolomite, and aragonite, attached to unknown grains. In the light fraction...author was working for the Geological Survey of Canada under the leadership of Dr Wes Blake Jr. when she |  | | Report (issue) | | CANADA DEPARTMENT OF MINES Hon. T. A. Crerar, Minister; Charles Cambell, Deputy Minister NATIONAL MUSEUM...MUSEUM OF CANADA W. H. Collins, Acting Director BULLETIN No. 82 Annual Report of the National Museum...group, National Museum of Canada. (Presented by Mr. Harry Snyder.) CANADA DEPARTMENT OF MINES Hon. T...Charles Camsell, Deputy Minister NATIONAL MUSEUM OF CANADA W. H. Collins, Acting Director BULLETIN No. 82... GENERAL ACTIVITIES OF THE NATIONAL MUSEUM OF CANADA By W. H. Collins, Acting Director The work of the |  | | Report (chapter) | | given the correct geochemical microenvironments. Aragonite and high-Mg calcite may form within and/or upon...(agar) media producing calcite, and liquid media aragonite. Bacterially induced precipitation of calcium...recrystallization of former acicular high-Mg calcite (or even aragonite) cements (Sandberg 1985; Kendall 1985). Several...calcite-cemented moulds, indicating that skeletal aragonite was susceptible to early dissolution (see Fig...Carboniferous 'Waulsortian-like' buildups of Arctic Canada also appear to have developed during transgressive |  | | Book (volume) | | the following section we will review, on a region-by-region basis, the Permian paleogeography of Pangea...Alsharhan and Nairn (Arabia), Beauchamp (Arctic Canada), Cassinis et at. (S. Europe), Chuvashov (Urals)...4G). During the Early Permian, much of western Canada appears to have been covered by a shallow sea that...Ziegler 1989) (Figs. 6 and 10). The Permian in this region (France, Italy, and Spain) consists primarily of...considering the changes that took place in the southern region of Gondwana during the Permian. The paleogeography |  | | Journal (article/letter/editorial) | | University of Ottawa, Ottawa, Ontario, KlN 6N5, Canada ‘Department of Earth Sciences, University of Waterloo...N2L 3G1, Canada ‘Department of Geology, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada (Received...discussed Ordovician brachiopods from Anticosti Island (see Appendix 1) contained ~20% diagenetic calcite...from various localities in Canada (Appendix 1). The general geology of Canada is summarized in DOUGLAS...Natural Sciences and Enginqiag Re-search Council of Canada. We acknowledge tech&al support by Robert Drimmie |  | Richter, D.K., Neuser, R.D., Schreuer, J., Gies, H., Immenhauser, A. (2011) Radiaxial-fibrous calcites: A new look at an old problem. Sedimentary Geology, 239 (1) 23-36 doi:10.1016/j.sedgeo.2011.06.003 | Journal (article/letter/editorial) | | carbonate rocks deposited during intervening aragonite seas (Sandberg, 1983). In terms of their bathymetric...the problematic Pleistocene examples from Ryukyu Island (Sandberg, 1985), specifics In order to determine...waters in the shallow marine burial domain, both aragonite and calcite sea mode. 1 Permian of Capitan Reef;...Carboniferous to Lower Permian of Ellesmere Island, Arctic Canada 9 Upper Triassic of Northern Calcareous...the fact that RFC and FOFC are present during aragonite and calcite sea modes throughout the Phanerozoic |  | | Journal (article/letter/editorial) | | Alberta, Edmonton, TE D MA Alberta, T6G 2E3, Canada AC CE P E-mail address: Brian.Jones@ualberta...carbonate that are formed of various combinations of aragonite and calcite, and in very rare cases vaterite....factors that control the precipitation of the aragonite and calcite have been the RI subject of considerable...controls calcite and aragonite precipitation in all springs. Instead, the reason for aragonite as opposed to...series of possibilities for each system. First, aragonite, commonly with calcite as a co-precipitate, will |  | | Report (issue) | | 64 TABLES TABLE 1. X-ray determinations of aragonite and calcite in shells of fossil mollusks.______-______-___---_...of the Mitten Member are composed entirely of aragonite, whereas shell material in all specimens from...D.C. H. A. Tourtelot made all the calcite and aragonite X-ray determinations and greatly aided the authors...(1957) mapped the anticline and the surrounding region at a scale of 1:125,000 (1/2 inch=l mile). In 1962...middle part of the Pierre Shale of the Black Hills region and designated and described the type stratigraphic |  | | Journal (article/letter/editorial) | | fresh-water shells examined consist mainly of aragonite. Some marine species deposit a calcite shell,...layer of calcite and an inner pearly layer of aragonite. Pelecypods probably deposit shell mainly during...represent a number of growth layers. The heavy hinge region of pelecypod shells was avoided, except for very...73 * Parentheses indicate aample composed of aragonite; others are calcite. Table 3. Isotopic Sample...Bay, Jllexico Shell (calcite and aragonite) Ligament fibers (aragonite) -3.67 -2.54 10.21 +0.25 1Mytilu |  | | Journal (article/letter/editorial) | | Department, McGill University, Montreal, Quebec, Canada, H3A 2A7 (*correspondence: oneil_jo@eps.mcgill...PO Box 8888, St. Centre-ville, Montreal, Quebec, Canada, H3C 3P8 Our understanding of the early differentiation...(2001) Nature 409, 178-181. [3] De Corte (2000) Island Arc 9, 428-438. A696 Goldschmidt Conference...and the nonchondritic composition of the Earth Aragonite as a precursor phase of cyanobacterial calcite...S7H 0X4, Canada (*correspondence: obst@gmx.ch) 2 BIMR, McMaster University, Hamilton, Canada 3 Environment |  | | Journal (article/letter/editorial) | | 18 αacid = 1.01030 and 1.01063 for calcite and aragonite, respectively (Kim et al., 2007a, 2007b). The...fractionation (Eqs. (1), (2), respectively). The aragonite–water oxygen isotope fractionation is compared...89 3 −1 − 32.17 − 31.14 1000 ln α(aragonite–water) = 17.88 10 T 1000 ln α(calcite–water) =...samples are predominantly calcite with traces of aragonite and vaterite, but one sample (carb #37, precipitated...calcite and aragonite and another (carb #43, precipitated at T = 65 ◦ C) is primarily aragonite. Note that |  | Xiao, Shuhai, Knoll, Andrew H., Kaufman, Alan J., Yin, Leiming, Zhang, Yun (1997) Neoproterozoic fossils in Mesoproterozoic rocks? Chemostratigraphic resolution of a biostratigraphic conundrum from the North China Platform. Precambrian Research, 84 (3) 197-220 doi:10.1016/s0301-9268(97)00029-6 | Journal (article/letter/editorial) | | Qingbaikou groups (Hu and Fu, 1982) in the Jixian region, as well as with Sinian (late Neoproterozoic) successions...Thule Group of northwestern Greenland and Ellesmere Island, Canada (Dawes and Vidal, 1985; Hofmann and Jackson...Formation of the Fury and Hecla Group, Baffin Island, Arctic Canada (Butterfield and Chandler, 1992), and the...formations of the Bylot Supergroup, also on Baffin Island (Hofmann and Jackson, 1994). The three latter occurrences...fabrics are morphologically similar to abiogenic aragonite cements, as well as fabrics observed within ooids |  | | Report (issue) | | Urbana-Champaign and Benoit Beauchamp (Geological Survey of Canada, Calgary) were asked by GSGP’s director, Robert...Geological Survey of Canada, 3303 33rd Street NW, Calgary, Alberta, T2L 2A7, Canada With contributions...cyclicity, eastern North America. Benoit Beauchamp, Canada—Carboniferous to Triassic tectono-climatic evolution...synchroneity of the sedimentary record (Benoit Beauchamp, Canada, and P. A. Scholle, U.S.A, co-chairs) during the...REGIONAL PANELS AND COORDINATORS, WG-2 Geographic Region Coordinator 1. Gondwana J. J. Veevers, Australia |  | | Journal (article/letter/editorial) | | rights reserved. Keywords: Pteropoda Heteropod Aragonite ocean Evolution Global climate change 1. Introduction...aragonitic shells is limited to water depths above the Aragonite Compensation Depth (ACD, 3000 m in the Atlantic...and heteropods produce a calcareous shell from aragonite. Even species that are shell-less as adults produce...(that are subsequently lost during ontogeny). Aragonite is a polymorph of calcium carbonate, which is...by the closing of the Isthmus of Panama. 4.3. Aragonite and calcite oceans In the oceans, long-term changes |  | | Journal (article/letter/editorial) | | occurrences are emphasized simply because it is the region most familiar to the author. The terminology “petrified...Geiseltal, Germany British Columbia, Canada Ellesmere Island Arctic Canada Washington, USA Florida, USA Dunrobba...Late Cretaceous wood, Nanaimo Group, Vancouver Island, British Sarasota County, Florida, USA; (B) Late...Late Cretaceous wood, Nanaimo Group, Vancouver Island, Sarasota County, Florida, USA; (B) Late Cretaceous...Group, Vancouver Island, British Columbia, Canada. British Columbia, Canada. Columbia, Canada. Figure 2. |
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