 | | Journal (article/letter/editorial) | | the K-Pg boundary (Fastovsky and McSweeney, 1987; Hotton, 2002; Nichols and Johnson, 2002), and locally...Creek-Tullock Formation contact (Murphy et al., 1995; Hotton, 2002). SYSTEMATIC PALEONTOLOGY Oofamily BELONOOLITHIDAE...Testudoolithus oosp. (VMNH 120425/ES 222). A, aragonite turtle eggshell exhibiting pathological eggshell...eggshell layer displays radiating crystals of aragonite, whereas recrystallization of the upper half obscures...Eggshell Abnormality—The crystal morphology of aragonite distinguishes extant and fossil turtle eggs from |  | | Journal (article/letter/editorial) | | investigations along the Bree fault scarp (Roer Graben, Belgium): Soil Dynamics and Earthquake Engineering, v....2001, Modeling of speleothem failure in the Hotton cave (Belgium): Is the failure earthquake induced?: Geologie...dating of Lake Lisan (late Pleistocene Dead Sea) aragonite and implications for glacial East Mediterranean |  | | Journal (article/letter/editorial) | | among vertebrates: Apatite occurs in agnathans, aragonite occurs in jawed fish and amphibians, and calcite...ISOTOPES IN VERTEBRATES Carbon in fish otolith aragonite is de− rived from HCO− 3 dissolved in the inner...by the water in which the fish lives. Otolith aragonite is often far from isotopic equilibrium with the...fluid (Kalish 1991b). As the δ 13C of otolith aragonite is a poor monitor of environmental 13C/12C ratios...1991). OXYGEN ISOTOPES IN VERTEBRATES Otolith aragonite precipitates in oxygen isotope equilibrium with |  | | Journal (article/letter/editorial) | | in Acanthodes (Miles, 1973b), chondrichthyans (Hotton, 1952; Maisey, 1989; Coates and Sequeira, 2001)...2004), early chondrichthyans (Gross, 1937, 1938; Hotton, 1952; Zangerl, 1981; Young, 1982), and arthrodire...chondrichthyan Orthacanthus platypternus (adapted from Hotton, 1952, and Field Museum [FMNH] UF 113). B, the...statoliths are, with some exceptions, composed of aragonite, as in sarcopts. Girdles, Appendicular Skeletons...discovery on acanthodian scales from the Famennian of Belgium. Geobios Mémoire spécial 19:31–34. Dick, J. R |  | | Journal (article/letter/editorial) | | +I+4 to -0.2 per mil. It may be significant that aragonite is the major constituent in three of these, whereas...material of the anomalous specimens consists of aragonite and appears to be unaltered, therefore, the anomalous...EPSTEIN S. (1957) On the origin of sedimentary aragonite needles of the Great Bahama Bank. J. Geol. 65...number, as follows: dominant aragonite (A), minor or trace amounts of aragonite, calcite, or dolomite-(a)...AD AJC ALK ARP A. A. A. A. A. C. Smith and N. Hotton Donaldson J. Collier L. Kidwell R. Palmer JNW |  | | Book | | Trade Marks Shells to bits, Bits to dust, Aragonite to calcite, The microscope’s a must. Pisceey ...does one find much of either high-Mg calcite or aragonite (CHAVE, 1954). If the mineral dolomite predominates...of discrete acicular (needlelike) crystals of aragonite or calcite up to 4 microns in length and of finely...supersaturated with respect to either calcite or aragonite, how much is of direct biologic origin, and how...neomorphism to include such processes as inversion (aragonite—calcite), recrystallization (calcite—calcite) |  | Tabor, Neil J., Sidor, Christian A., Smith, Roger M. H., Nesbitt, Sterling J., Angielczyk, Kenneth D. (2017) Paleosols of the Permian-Triassic: proxies for rainfall, climate change and major changes in terrestrial tetrapod diversity. Journal of Vertebrate Paleontology, 37. 240-253 doi:10.1080/02724634.2017.1415211 | Journal (article/letter/editorial) | | 1992. Carbon isotopic fractionation in synthetic aragonite and calcite; effects of temperature and precipitation...Tabor, N. J., C. M. Romanchock, C. V. Looy, C. L. Hotton, W. A. DiMichele, and D. S. Chaney. 2013c. Conservatism |  | | Report (issue) | | precipitation of calcite ce¬ ments in soils. Aragonite and Mg-calcite are precipitated at the spring...(Fig. 5). XRD analyses show that most are either aragonite or hydromagnesite, with minor Mg-calcite and calcite...calcite, and a later phase of clear needle-fiber aragonite that fills microfractures cutting the earlier...surrounding the damp, marshy from calcite to aragonite precipitation is found in several other R. W...material (mainly quartz-silt and clays), fiber aragonite or platy hydromagnesite, rather than less solu¬ |  | | Book | | common mineral found in most limestones; and aragonite, or "mother of pearl," which most molluscs use...collectors. Pearls are simply layered structures of aragonite that are secreted around a central nucleus (like...the mantle of certain n1olluscs. The coating of aragonite is secreted so that the sand grain does not continue...at the University of Toronto), the late Nicholas Hotton of the Smithsonian Institution (a student of Romer...1994, undertaken by the Smithsonian and led by Hotton, the crew was working a locality nicknamed Don's |  | | Book (volume) | | Pangea and their contemporaries and competitors. In: Hotton N, MacLean PD, Roth 11, Roth EC (eds) Ecology and...and implications for Therapsid distribution. In: Hotton N Ill, MacLean PD, Roth 11, Roth EC (eds) The Ecology...and implications for therapsid distribution. In: Hotton N II, MacLean PO, Roth 11, Roth EC (eds) The Ecology...precipitation of carbonate shifted from calcite to aragonite in the Carboniferous (Sandberg 1983). Sandberg...and suggested that the change from calcite to aragonite occurred because the magnesium/calcium ratio and |  | Zeng, Zhiwei, Zhu, Hongtao, Yang, Xianghua, Zeng, Hongliu, Hu, Xiaolin, Xia, Chenchen (2019) The Pangaea Megamonsoon records: Evidence from the Triassic Mungaroo Formation, Northwest Shelf of Australia. Gondwana Research, 69. 1-24 doi:10.1016/j.gr.2018.11.015 | Journal (article/letter/editorial) | | high-resolution, absolute-dated 31 ACCEPTED MANUSCRIPT aragonite speleothem from eastern China. Earth and Planetary...and implications for therapsid distributions: in Hotton, N.H., III, Maclean, P.D., Roth, J.J., and Roth |  | | Report (issue) | | and implications for therapsid distribution, in Hotton, N. II, MacLean, P. D., Roth, E. C., eds., The... Climatic evolution of India and Australia tion, in Hotton, N. I, MacLean, P. D., Roth, J. J., and Roth, E...is the 5'80 of the ambient water versus SMOW. Aragonite grown model of Railsback et al. (1989), which...al., 1969). The paleotemperature equation for aragonite (Grossman and Ku, 1986, as modified by Hudson...T (°C) = 19.7 — 4.34 OO ie = 5, sow): This aragonite paleotemperature equation cannot be applied to |  | | Journal (issue) | | same conclusions. As the metastable minerals aragonite and Mg-calcite are removed by frei.h water fron1...calcite, accepts less uranium than the original aragonite. The relationship between uranium and the stable...content of coral limestones composed chiefly of aragonite had on the average three times as much uranium...ascribed to loss during recrystallization of aragonite to calcite. Broecker ( 1963) suggested that the...\Valsinghan1 Pembroke Belmont Southampton Southampton Aragonite -2 .14 19 34 39 38 30 47 52 55 42 49 41 |  | | Book | | water, consist of calcite and another mineral, aragonite, which is also composed of calcium carbonate....Reservoir, was formed chiefly of the mineral aragonite, an unusual form of calcium carbonate (see Figure...Reno, Kingman, and Clark counties. Aragonite (Hardness 3½-4).-Aragonite has the same chemical composition...cleavage and a different crystal form than calcite. Aragonite crystals commonly occur as radiating groups of...of fibrous or needlelike shapes. Like calcite, aragonite fizzes and dissolves readily in cold, dilute hydrochloric |  | | Book | | the deltaic estuary which occupied the Gulf of Luxembourg in Upper Toarcian times. The remarkably detailed...infer that the primary precipitates were calcite, aragonite, dolomite and hydromagnesite, per¬ haps also nesquehonite...G. 124. Mus6e de l’Afrique Centrale, Tervuren (Belgium). VARENTSOV, I. M. : Sedimentary Manganese Ores...Appliqu€e University Libre de Bruxelles Bruxelles 5 / Belgium Geologic Relations Among Uranium Deposits, South...The original carbonate mineral was most likely aragonite or high-magnesium calcite, both un¬ stable and |  | | Book | | corresponds to higher temperatures and seasonal aridity (Hotton and Baghai-Riding 2010). The now-extinct family...southern part of the formation (Litwin et al. 1998; Hotton and Baghai-Riding 2010). Thus, the botanical postcards...British Museum (Natural History), London, p 150 Hotton CL, Baghai-Riding NL (2010) Palynological evidence...bernissartensis from the Lower Cretaceous of Bernissart (Belgium). Memoir de l’Institut R des Sci Nat de Belgique...et Banks: a Middle Devonian Caldoxylopsid from Belgium. Int J Plant Sci 163:699–713 Bucur II (1997) Formaţiunile |  | | Journal (issue) | | nucleation are breached. calcite (and occasionally aragonite) may precipitate from solution. In geothermal...and Van der Plas 197 1: Meyers 1977 ). prior to aragonite/calcite transformation (Jacka 1974). later during...Persian Gulf were partially cemented by fibrous aragonite. and that cementation must ha\e been within the...sample~ from indi\idual masses of botryoidal aragonite cement. TI1e calculated growth rates of these...subslrate. RESl I.TS Results indicate that fibrous aragonite cement crystals may grow to lengths of 5-10 µm |  | | Book | | British Isles, and the basement rocks of Holland and Belgium, the northeastern element of the Avalonian microcontinent...Countries and the valley of the River Meuse in Belgium. Other relics of the Variscan orogeny and the Rheic...particularly tough and fibrous carbonate mineral called aragonite, which they deposit in the form of radial platelets...or core of the structure. See also synclines. aragonite A mineral that is one crystalline form of calctum...calcium carbonate (CaCO,), for example, calcite, aragonite, or dolomite. Minerals that are used by most marine |  | | Book | | composed of calcium carbonate in the form of aragonite (turtles) or calcite (other amniotic vertebrates)...since the Late Jurassic. Jn S. Chatterjee & N. Hotton (eds.) New Concepts in Global Tec- Hirsch, K....female P. andrewsi contributed to single nests (Hotton, 1963) appear to be based on the mistaken notion...two ornithischian dinosaurs. Nature 332: 256-7. Hotton, N. 1963. Dinosaurs. (New York: Pyramid Publications)...bernissartensis from the Lower Cretaceous of Bernissart (Belgium). Institut Royal des Sciences Naturelles de Belgique |  | | Book (volume) | | ecologiques, Université de Liége, B-4000 Liége, Belgium. Stromatolites. WILLIAM S. LACEY, School of Plant...Penicillus disintegrates into tiny needle-shaped aragonite crystals which form lime mud (Stockman et al...calcium carbonate is in the form of calcite or aragonite. trace fossils were termed ing groups such...forms of calcium carbonate (CaCO3), calcite, and aragonite; the opaline silicates and phosphates (Lowenstam...to skeletons that are pure calcite or pure aragonite, many invertebrates have skeletons consisting |  | | Book | | Museum; Drs. G. A. Cooper, C. L. Gazin, and Nicholas Hotton III, United States National Museum; Mr. J. H. Madsen...characteristics is most mollusks (gastropods, composed of aragonite, a relatively shells of pelecypods, and cephalopods)...relatively in older rocks because of the removal of aragonite by solution or by recrystallization to the more...carbonate hard parts of organisms (CaCOs) or aragonite. Alteration by calcification is in the form...particularly is composed of common calcite or aragonite. carbonate, in remains that were The origi- |  | | Book (volume) | | Lower and Non-Specialized Mammals (1960: Brussels, Belgium). Brussels: Paleis des Academién. Prothero, D...Pliocene concretions from the Antwerp Basin in Belgium (Tasselia). Onychophora “Velvet worms” superficially...throughout the geologic record. Despite the fact that aragonite is a less stable mineral, there are places of...occur. In many limestones, the conversion of aragonite to calcite causes the shell to bond strongly to...Palaeozoic rocks of the north of Germany and of Belgium, as compared with formations of the same age in |  | | Book | | C. Hope ● C. A. Hopping ● D. G. Horton ● C. L. Hotton ● J. Hsü ● F. M. Hueber ● A. Iglesias ● I. A. Ignatiev...branches. In a specimen of Huvenia sp. from Gaspé, Hotton et al. (2001) describe sporangia attached to small...sporae dispersae taxa Retusotriletes or Calamospora (Hotton et al., 2001). One plant that combines features...form from the Lower Devonian (Emsian) of southern Belgium (Gerrienne, 1988), sporangia appear to have been...lycopsid cones from the Famennian (Upper Devonian) of Belgium exhibit an interesting collection of features unlike |  | | Book | | region of Hamoir-sur-Ourthe (Dinant Synclinorium, Belgium). - Belg. Geol. Surv. Prof. Pap., 209, 1-55. Dzik...known as Beaufort Group (formerly Beaufort series) (Hotton, 1967). Traditionally, the systemic boundary is...and would be of several million years duration. Hotton (1967) has described the sedimentology of the Beaufort...symposium. - In: Goldring et al., 1952, 299-318. Hotton III, Nicholas (1967): Stratigraphy and sedimentation...computed using the pressure dependence of the aragonite and calcite saturation constants outlined in Broecker |  | | Report (issue) | | p. A41-A42. Folk, R. L., and Noble, P., 1989, Aragonite, calcite, and bacteria from volcanic hot springs...with Programs, v. 21, no. 1 , p. 14. Hook, R. W., Hotton, N., Ill, and Hentz, T. F., 1989, Paleoenvironmental...Louis, Missouri. Robert L. Folk "What controls aragonite vs. calcite precipitation in Viterban hot springs: |
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