Essays about: "highstand"

Found 3 essays containing the word highstand.

  1. 1. Lower to Middle Ordovician carbonate sedimentology and stratigraphy of the Pakri peninsula, north-western Estonia

    University essay from Lunds universitet/Geologiska institutionen

    Author : Niklas Brådenmark; [2016]
    Keywords : berggrundsgeologi; ordovicium; baltoskandiska grundhavet; havsnivå; kalksten; glaukonit hårdbottnar.; Earth and Environmental Sciences;

    Abstract : Sedimentologi och stratigrafi från senaste tidiga ordovicium till och med mellanordovicium i nordvästra Estland har undersökts. Studien omfattar klippsektioner och Testepere stenbrott på Pakrihalvön, samt en vägskärning utanför staden Tabasalu strax väster om Tallinn. READ MORE

  2. 2. Sequence stratigraphy, palynology and biostratigraphy across the Ordovician-Silurian boundary in the Röstånga-1 core, southern Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Ahmed Salah Badawy; [2012]
    Keywords : avsättningsmiljöer; stratigrafi; Sweden; Scania; Röstånga; Silurian; Ordovician; TAI; Thermal Alteration Index; palynology; sea level changes; stratigraphy; depositional environments; havsnivåförändringar; palynologi; Ordovicium; Silur; Skåne; Sverige.; Earth and Environmental Sciences;

    Abstract : A multiproxy study on sedimentary rocks spanning the Ordovician-Silurian boundary has been performed on material from the Röstånga-1 core, with the aims to improve the biostratigraphical and sedimentological framework and to interpret the depositional environment during this interval in Earth’s history. The sedimentary succession in the Röstånga-1 core is developed in the Scanian Lithofacies Belt and is considered an excellent upper Middle Ordovician-Lower Silurian reference section for southernmost Sweden. READ MORE

  3. 3. Aqueous Phase Geochemical Characterization and Delineation of Low Arsenic Aquifers in Matlab Upazila, SE Bangladesh.

    University essay from KTH/Miljögeokemi och ekoteknik

    Author : Rajib Hassan Mozumder; [2011]
    Keywords : arsenic; Bangladesh; groundwater; mitigation; color tool; aquifer; highstand; lowstand;

    Abstract : The fact that the former highstand whitish sediments of Plio-Pleistocene and lowstand off-white/red sediments of Late Pleistocene containing low As concentrations in the Bengal basin forms the premise for developing a color tool by the ‘Sustainable Arsenic Mitigation Project’ (SASMIT) to guide the local drillers of Matlab, SE Bangladesh, so that they can target low As aquifers. Groundwater samples collected from the black group of sediments representing a highly reducing environment contains very high concentrations of As, Fe2+ , NH4+, PO43-, HCO3–, and DOC and very low SO42- and Mn2+ concentrations; and vice-versa for the red/offwhite/white group of sediments, thus representing a less reducing condition. READ MORE