 | | Journal (article/letter/editorial) | | (LMC) and/or dolomiteāall metastable phases (aragonite and high-magnesium calcite (HMC)) have been dissolved/...Ludfordian) Lau CIE of Gotland, Sweden (Fig. 6 1A). The Silurian of Gotland carbonate deposits comprise...shells were collected consist of mostly pure LMC (aragonite is absent and primary aragonitic components are...dolomitization, and Sr/Ca to track primary mineralogy, as aragonite contains more Sr than calcite) and degree of diagenetic...involving unlithified carbonate muds (aragonite needles) and original aragonite and HMC bioclasts (Munnecke et |  | | Journal (article/letter/editorial) | | seawater. 2. METHODS AND SAMPLES Silurian (Gotland/Sweden), Devonian (Morocco, China, USA), Pennsylvanian...Beds (GotlandāSweden) Eke Beds (GotlandāSweden) Eke Beds (GotlandāSweden) Eke Beds (GotlandāSweden) Hemse...Beds (GotlandāSweden) Hemse Beds (GotlandāSweden) Mulde Beds (GotlandāSweden) Mulde Beds (GotlandāSweden)...(GotlandāSweden) Slite Beds (GotlandāSweden) Slite Beds (GotlandāSweden) Visby Beds (GotlandāSweden) The boron isotope...values of the Silurian brachiopod shells from Gotland (Sweden) range from 6.8 to 11.0ā° (Table 2). Two Lochkovian |  | Richardson, Jocelyn A., Newville, Matthew, Lanzirotti, Antonio, Webb, Samuel M., Rose, Catherine V., Catalano, Jeffrey G., Fike, David A. (2019) Depositional and diagenetic constraints on the abundance and spatial variability of carbonate-associated sulfate. Chemical Geology, 523. 59-72 doi:10.1016/j.chemgeo.2019.05.036 | Journal (article/letter/editorial) | | Canada and early Silurian carbonates from Gotland, Sweden, across multiple depositional M facies. Lithofacies...fossil communities between Anticosti Island and Gotland are similar, ED which allows for comparison of...lithofacies from Anticosti Island, Canada and Gotland, Sweden (Fig. 1). The samples from these localities...908) (Fig 1b; Jones M et al., 2011). ED Gotland, Sweden (Fig. 1), represents numerous stacked carbonate...of Gotland, PT with progressively younger strata to the south. The carbonate strata on Gotland are |  | | Report (chapter) | | Pb/Pb dating of Silurian macrofossils from Gotland, Sweden JONATHAN RUSSELL Department o f Earth Sciences...well-preserved stromatoporoidal carbonates from Gotland, Sweden. A Pb/Pb date of 432-t-15Ma for Wenlock-Ludlow...Fig. 1. Geological units of the Swedishisland of Gotland, including localities for carbonte samples; after...formosus koztowskii Bohemoqraptus tumescens 177 GOTLAND Formation Sundre Hamra BurgsvlkEke scanicus...Harland eta/. (1989) Diagrammatic representation of Gotland lithostratigraphy is interpretative Fig. 2. Stratigraphy |  | | Journal (article/letter/editorial) | | cycling during the Silurian Ireviken Event in Gotland, Sweden Catherine V. Rose a,ā, Woodward W. Fischer...the Ireviken Event from multiple sections in Gotland, Sweden. These samples preserve no systematic change...extirpation of more than 50% of trilobite species in the Gotland record (Jeppsson, 1997a); there were also associated...limestone beds; widespread eustatic low-stand. Sweden (SW) Micrite/wackestone/packstone with subaerial...(NO) No facies data but authors suggest that Gotland samples record lighter d13Ccarb values (1.0ā°) |  | | Journal (article/letter/editorial) | | found in the stromatoporoid skeletons. Coexisting aragonite precursor grains such as gastropod and cephalopod...petrographers for many years. Both calcite and aragonite have been suggestedas the stromatoporoidskeletalmineralogy...that they probably secreted calcite rather than aragonite. Based on composition of stromatoporoids with...skeletal tissue, and suggested that microcrystalline aragonite has been replaced by microcrystalline calcite...composed of original aragonite of spherulitic forms. James (1974) described that aragonite ClU'bolUlUS G"d |  | | Report (chapter) | | non-skeletal marine precipitation (ācalciteā and āaragonite seasā), has affected skeletal mineral secretion...the fossil record of marine organisms with an aragonite shell is widely depleted in some shelf settings...of molluscan lagerstaĢtten from ācalciteā and āaragonite seasā show a similar pattern of skeletal mineralogical...destruction of the less stable carbonate polymorphs, aragonite and high-Mg calcite, is increasingly recognized...inorganic carbonate precipitation: ācalciteā and āaragonite seasā (Sandberg 1983). It is notable that the |  | | Journal (article/letter/editorial) | | Geochemical Laboratory of the Geological Survey of Sweden. Many of the main element analyses were made in...(āhemicsl Laboratory of the Geological Survey of Sweden, and S, P and S were determined on the same sample...with dept.h of pH, EH, salinity and 0, in the Gotland Deep, station S-33. No particular significance...(personal communication) the H,S level in t.he Gotland Deep In the H,S zone there is a sharp drop in was...indicat,ing that the situation is different in the Gotland Deep. Another possible contributor to the increased |  | FarkaÅ”, Juraj, Bƶhm, Florian, Wallmann, Klaus, Blenkinsop, John, Eisenhauer, Anton, van Geldern, Robert, Munnecke, Axel, Voigt, Silke, Veizer, JĆ”n (2007) Calcium isotope record of Phanerozoic oceans: Implications for chemical evolution of seawater and its causative mechanisms. Geochimica et Cosmochimica Acta, 71 (21) 5117-5134 doi:10.1016/j.gca.2007.09.004 | Journal (article/letter/editorial) | | carbonate deposits, i.e. the oscillating ācalciteāaragonite seasā. The ultimate control of the calcium isotope...Island), Great Britain, Ireland, Germany, Sweden (including Gotland), Belgium, Austria, Italy, Spain, Morocco...2005; Heuser et al., 2005), at 0.4 Ā± 0.2ā° for aragonite (BoĢhm et al., 2002; Gussone et al., 2003, 2005)...composition of seawater, temperature, mineralogy (aragonite vs. calcite) and the carbonate ion concentration...Phanerozoic seawater and the concept of ācalciteāaragonite seasā Experimental data from ļ¬uid inclusions of |  | | Journal (article/letter/editorial) | | part of the Baltic Sea, up to Scania in southern Sweden. The reconstructed facies array is usually presented...exposures on Gotland and in the Glint zone in the Baltic States. The localities on Gotland yield numerous...2003). However, in spite of good exposures, the Gotland sections do not enable study of the anatomy of...that some of the stromatoporoid biostromes on Gotland are of a similar origin (compare, Kershaw 1990)...(resembling that reported from the Tofta Beds on Gotland, ascribed by Watkins (1992) to Silurian back-reef |  | Richardson, Jocelyn A., Keating, Colin, Lepland, Aivo, Hints, Olle, Bradley, Alexander S., Fike, David A. (2019) Silurian records of carbon and sulfur cycling from Estonia: The importance of depositional environment on isotopic trends. Earth and Planetary Science Letters, 512. 71-82 doi:10.1016/j.epsl.2019.01.055 | Journal (article/letter/editorial) | | the IBE from a time-correlative section on Gotland (Sweden) is absent in the data presented here. This...Fennoscandian Shield. Saaremaa Island, Estonia, and Gotland are outlined in red. Modiļ¬ed from Calner (2005)...Lehnert et al., 2010). Carbonate strata on Gotland Island, Sweden, record the IBE, the Ī“ 13 C excursions...allow precise correlation with the succession on Gotland (Jeppsson and MƤnnik, 1993) and elsewhere where...abundance of fossils than deep-water settings. Aragonite and high-Mg calcite fossils are prone to micritization |  | | Journal (article/letter/editorial) | | of brachiopods ā examples from the Silurian of Gotland c Christian Samtleben a,) , Axel Munnecke b,1,...exceptionally well-preserved Silurian sequence on Gotland ŽSweden.. The state of preservation of brachiopod...composition can be excluded. In the Silurian of Gotland, the stratigraphically widely distributed spiriferid...well-preserved sequences are rare. The Silurian sequence on Gotland Župper Llandovery to uppermost Ludlow. is one of...formed as metastable carbonate minerals, such as aragonite or high-magnesian calcite, and thus are highly |  | Kiipli, Tarmo, Kiipli, Enli, Kallaste, Toivo, Hints, Rutt, Somelar, Peeter, KirsimƤe, Kalle (2007) Altered volcanic ash as an indicator of marine environment, reflecting ph and sedimentation rate ā example from the Ordovician Kinnekulle bed of Baltoscandia. Clays and Clay Minerals, 55 (2) 177-188 doi:10.1346/ccmn.2007.0550207 | Journal (article/letter/editorial) | | bed range from outcrops in northern Estonia and Sweden to >1000 m in Latvia and to 2400 m in Lithuania...northern Latvia. Baltic region and ~2 m in southern Sweden, exceeding all other Paleozoic volcanic intercalations...been correlated over northern and central Estonia, Sweden and Norway (BergstroĢm et al., 1995). The Ordovician...pyroclastic sanidine from the Kinnekulle type locality in Sweden (26.0 mol.%, BystroĢm, 1956). The composition of...the volcanic ash bed from 4.1 to 6.0%. In the Gotland sections the K2O content varies from 6.0 to 6.2% |  | | Book | | Palaeocyclus por pita (LinnĆ©): Silurian, Gotland, Sweden, x 14. Tabularium Axial part of a corallite...EuropeāAsiaāAustralia. Holmophyllum holm Wedekind: Ludlow, Gotland, Sweden, x 3. Cosmopolitan. Cystiphylloides secundum...Wenlock; (A) Dudley, England, x 14; (B), (C) Gotland, Sweden, x 2. Pl. 3.3.8. Calceola Lamarck, 1799 ...EuropeāAsia. Stauria favosa (LinnĆ©): Wenlock, Gotland, Sweden, x 2. Pl. 3.3.15. Dendrostella Glinski, 1957... Calostylis cribraria Lindstr6m: Wenlock, Gotland, Sweden, x 2. FAMILY LAMBELASMATIDAE Subfamily Lambelasmatinae |  | | Journal (article/letter/editorial) | | anoxic basins of the Baltic, especially in the Gotland deep (Fig. 1) but also in the Landsort and Bornholm...Salinities in the deep waters of the Bomholm and Gotland deeps have been measured since 1900 and show variations...carbonate rn the sediments of the Bomholm (core 012j. Gotland (core 031) and Landsort (core 036) deeps is exemplified...accu mulate in the upper sediment layers of the Gotland and Landsort deeps. These carbonate layers are...leaching, in sediments of the Bomholm deep (012), Gotland deep (03 l), and Landsort deep (036). Core 012 |  | | Report (chapter) | | Silurian, Gotland. 10. Nuculoidea pinguis (Lindstr6m, 1880), Upper Silurian, Wenlock, Gotland. 11. Cardiolaria...Ekstadia tricarinata Soot-Ryen, 1964, Upper Silurian, Gotland. 15. Nuculites oblongatus Conrad 1841, Middle Devonian...gotlandica (Soot-Ryen, 1964), Upper Silurian, Gotland. 19. Acharax (Nacrosolemya) trapezoides (Meek,...Silurozodus gotlandicus Liljedahl, 1992, Upper Silurian, Gotland. 26. Cycloconcha mediocardinalis Miller, 1874,...prisca (Hisinger, 1837), Upper Silurian, Ludlow, Gotland. 39. New genus C of Johnston & Goodbody (1988) |  | | Journal (article/letter/editorial) | | sources and carbonate polymorphs (calcite vs. aragonite), and/or possible kinetic Ca isotope effects due...mineralogy between near and off shore settings (e.g. aragonite vs. calcite which differ in their 13 C-enrichment;...concurrent change in the CaCO3 mineralogy (calcite vs. aragonite) of these calcifying organisms (cf., FarkaÅ” et...Possible role of carbonate mineralogy: calcite vs. aragonite mixing Ca isotope data from inorganic laboratory...that calcite is often isotopically heavier than aragonite, by up to 0.6h, due to differences in crystal |  | | Catalog/List | | matrix. (Outpost Mine, San Domingo Wash Maricopa County Arizona) lx)4ins Ā£4 063 CAVANSITE Ca (V 0 ) SiO...matrix (Union Carbide Mine, Wilson Springs Garland County, Arkansas USA) lxl Ā£4 1x2 Ā£7.50 497 TELLURITE Te...pure dark brown metallic (Herbb Ā£2 Mine, Powhatton County Virginia USA) lcm Ā£6 314 PYRARGYRITE Ag/3 SbS/3...masses, well coating matrix. (Dooneen Mine Allihies, County Cork, S.Ireland) . lxl Ā£3.50. 1x2 Ā£6.50 2xl.5ins...matrix.(some + Micros! Monument 1 Mine, Navajo County,Arizona,USA) lxl.Ā£3.50 1x2 Ā£7.00 118 CONICHALCITE |  | | Journal (article/letter/editorial) | | strontium isotope values should be high for pristine aragonite or low-Mg calcite fossils, grains and marine cements...(2000) suggested that Silurian conodonts from Gotland record paleotemperature and seawater-18O more faithfully...less stable mineralogies (magnesian calcites, aragonite). At one time belemnites were the material of...et al., 1996), Silurian (2includes samples from Sweden; Wenzel, 2000) and Ordovician unaltered brachiopod...coeval material studied by Wenzel, 2000 from Gotland, Sweden) whole rock material D18OB ā M values are significantly |  | | Journal (article/letter/editorial) | | aragonitic structures are rarely preserved in fossils. Aragonite is the first mineral to change in the diagenesis...Observations made on the Paleozoic rocks of Anticosti, Gotland, and elseĀ where have convinced me th at this is...general conditions on the island of Anticosti, Gotland, and Bsthonia conĀ tain neither -dolomite nor flint...the alternating coarse and fine layers found in Sweden were of a seasonal nature, to find out what actually |  | | Journal (article/letter/editorial) | | Ischadite8 Kwnipii , from the West of England and Gotland; Sphaerospongia tessellata, from Devonshire; and...specimens of Ischadites, from the Silurian strata of Gotland, which have been freely placed at my disposal for...examples of this species which occur in the isle of Gotland. I n 1875 an important treatise on the organization...the skeletou was a finely fibrous crystalline aragonite, and that this structure was entirely opposed...Ischadites Kamig~i from the Silurian of the isle of Gotland, Giimbel concludes that its organization does not |  | | Report (issue) | | Silurian conodont-based correlations between Gotland (Sweden) and Saaremaa (Estonia). Geological Magazine...topic composition of Silurian brachiopods (Gotland/Sweden): paleoceanographic implications. Palaeogeography...? Ohio Inner Mongolia Gotland Gotland Inner Mongolia Czech Republic Gotland Illinois & Wisconsin Welsh...OrdovicianSilurian boundary outcrops in Dubuque County, eastern Iowa, where they reported "an ancient...stone were subaerially exposed in Dalarna, southern Sweden, at the end of the Ordovician. These features probably |  | | Journal (article/letter/editorial) | | imprisonedwithin it by the further accretion of aragonite by chemical precipitation." He suggests that the...to this bed Leonard, in his "Geology of Clayton County," says: The lowerMagnesianis not markedoff sharplyfromthe...Calvin' as occurring at the same horizon in Allamakee County, which lies directly north of Clayton. The writer...memoirentitled "Ueber Algen und Hydrozoen im Silur von Gotland und Oesel,"' will bring out this striking similarity |  | Preto, Nereo, Spƶtl, Christoph, Mietto, Paolo, Gianolla, Piero, Riva, Alberto, Manfrin, Stefano (2005) Aragonite dissolution, sedimentation rates and carbon isotopes in deep-water hemipelagites (Livinallongo Formation, Middle Triassic, northern Italy) Sedimentary Geology, 181 (3) 173-194 doi:10.1016/j.sedgeo.2005.08.001 | Journal (article/letter/editorial) | | (2005) 173 ā 194 www.elsevier.com/locate/sedgeo Aragonite dissolution, sedimentation rates and carbon isotopes...with sedimentological evidence of deep-water aragonite dissolution. Deep-water dissolution is believed...time, some features can be explained only by aragonite dissolution at the waterāsediment interface. Sedimentological...Sedimentological features suggesting early lithification and aragonite dissolution include fracturing and reworking of...These features therefore demonstrate that the aragonite of the shells underwent dissolution already at |  | Richardson, Jocelyn A., Newville, Matthew, Lanzirotti, Antonio, Webb, Samuel M., Rose, Catherine V., Catalano, Jeffrey G., Fike, David A. (2019) The source of sulfate in brachiopod calcite: Insights from Ī¼-XRF imaging and XANES spectroscopy. Chemical Geology, 529. 119328 doi:10.1016/j.chemgeo.2019.119328 | Journal (article/letter/editorial) | | Island, Canada, and Wenlock-aged strata of Gotland, Sweden. The fossil brachiopod thin sections from Anticosti...Formation (Fig 1D; Jones et al., 2011). Samples from Gotland are from a poorly washed fossiliferous grainstone...respectively (Jones and Fike, 2013). Bulk Ī“34SCAS for Gotland samples SIL1 and SIL2 are +33.6 and +29.6ā° (Ā± 0...Newville, M., Sutton, S.R., 2005. Strontium in coral aragonite: 3. Sr coordination and geochemistry in relation...cycling during the Silurian Ireviken Event in Gotland, Sweden. Geochim. Cosmochim. Acta 246, 299ā316. https://doi |
|
