Essays about: "aragonite"

Found 5 essays containing the word aragonite.

  1. 1. Record of the end-Triassic mass extinction in shallow marine carbonates: the Lorüns section (Austria)

    University essay from Lunds universitet/Geologiska institutionen

    Author : Linus Brakebusch; [2022]
    Keywords : sedimentology; geochemistry; ooids; oolites; oncoids; oncolites; Triassic; Jurassic; Rhaetian; Hettangian; ocean acidification; Earth and Environmental Sciences;

    Abstract : The end-Triassic mass extinction (ETE) was one of the five big mass extinctions of the Phanerozoic and occurred ~201 Ma ago. Research agrees that the main triggering factor for the ETE was the eruptions of the Central Atlantic Magmatic Volcanic Province (CAMP), linked to the break-up of the supercontinent Pangaea. READ MORE

  3. 2. Methods and Approaches for Biogenicity Determination in Geological Samples - Implications for Extraterrestrial Search for Life

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Alexandra Zetterlind; [2018]
    Keywords : Biogenicity; microscopy; fossilized microorganisms; astrobiology; Biogenecitet; mikroskopering; fossiliserade mikroorganismer; astrobiologi;

    Abstract : For a better understanding of how to search for an extraterrestrial life, scientists study hidden biospheres on Earth. The subseafloor crust is recognized as a vast microbial habitat and it is hypothesized that extremophilic microorganisms, occurring there, can be the first living organisms on Earth. READ MORE

  4. 3. Size and Abundance of Late Pleistocene Reticulofenestrid Coccoliths from the Eastern Indian Ocean in Relation to Temperature and Aridity

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Jeroen van Dijk; [2017]
    Keywords : coccoliths; abundance; biometry; circular polarized light microscopy; Late Pleistocene; Marine Isotope Stage 11; kokkoliter; mängder; biometri; cirkulär polariserat ljus; pleistocen; Marine Isotope Stage 11;

    Abstract : Measurements on coccolith abundance and mass can be used as a signal of primary productivity and pelagic calcification in response to environmental change. The Leeuwin Current (LC) is known to transport warm and low-salinity waters from the Indo-Pacific Warm Pool (IPWP) southwards along the coast of West Australia. READ MORE

  5. 4. Paleoecology and sedimentology of the Upper Cretaceous (Campanian), marine strata at Åsen, Kristianstad Basin, Southern Sweden, Scania

    University essay from Lunds universitet/Geologiska institutionen

    Author : Faisal Javed Iqbal; [2013]
    Keywords : Campanian; Belemnellocamax mammilatus Zone; Belemnellocamax balsvikensis Zone; Brachiopods; Bivalves; Belemnites; Bryozoans; Barnacle; Sea urchin; corals; coprolites; shark teeth; vertebrate fossils; XRF; Sr Ca; Steinkern; Earth and Environmental Sciences;

    Abstract : The Campanian marine strata from Åsen, north east part of the Kristianstad Basin (southern Sweden) contain a most diverse vertebrate and invertebrate marine fossil assemblages. A diverse fossil fauna was collected from Campanian deposits from a ca. 4.15m thick section during June-August 2010-2012. READ MORE

  6. 5. OCEAN ACIDIFICATION

    University essay from Lunds universitet/Fysiska institutionen

    Author : Vilhelm Berg Malmborg; Marcus Sjöstedt; [2013]
    Keywords : calcium carbonate; Anthropogenic; pH; Baltic Sea; Östersjön; meteorologi; fysik; physics; Havsförsurning; Ocean acidification; Meteorology; modelling; aragonite; calcite; kalkspat; oceanography; oceanografi; Physics and Astronomy;

    Abstract : Ocean acidification is a consequence of the anthropogenic release of carbon dioxide (CO2) to the atmosphere. When CO2 is dissolved in water it affects the composition of ions and lowers the pH of the water. READ MORE