Essays about: "Llandovery"

Found 5 essays containing the word Llandovery.

1. 1. 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. 2. A Lower Silurian (Llandoverian) halysitid fauna from the Berge Limestone Formation, Norderön, Jämtland, central Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Peter Dahlqvist; [1999]
   Keywords : Halysitids; Catenipora; Halysites; Tabulate corals; Jämtland; Norderön; Berge Limestone Fm; Sweden; Silurian; Llandovery; Earth and Environmental Sciences;

   Abstract : Halysitid corals from the Llandoverian (Early Silurian) Berge Limestone Formation in Jämtland, central Sweden, are described. The investigation of the halysitid corals was done on material derived from the Norderön Island in Lake Storsjön, central Sweden. READ MORE

4. 3. Silurian graptolites from Bohemia, Czech Republic

   University essay from Lunds universitet/Geologiska institutionen

   Author : Christian Persson; [1999]
   Keywords : Bohemian Massif; Prague Basin; Silurian; graptolites; monograptids; correlation; Earth and Environmental Sciences;

   Abstract : The only relatively undisturbed Ordovician to Middle Devonian sequence in the Bohemian Massif is preserved in the central parts of the Prague Basin. This part stretches c. 35 km from Prague in the north towards Zelkovice in the southwest. During Ordovician and Silurian times this area is thought to have been a part of the northern Gondwana margin. READ MORE

5. 4. Lower Silurian polychaetaspid and ramphoprionid polychaetes from Gotland : aspects on taxonomy and palaeoecology

   University essay from Lunds universitet/Geologiska institutionen

   Author : Mats Eriksson; [1996]
   Keywords : Annelida; polychaetes; polychaetaspids; ramphoprionids; scolecodonts; palaeoecology; taxonomy; Lusklint; Lickershamn 2; Lower Visby Beds; Upper Visby Beds; Högklint Beds; Wenlock; Llandovery; Silurian; Gotland; Sweden; Earth and Environmental Sciences;

   Abstract : The Silurian strata of Gotland yield a wide variety of polychaete jaws. The investigated polychaetes include the family Polychaetaspidae with the two genera Polychaetaspis and Kozlowskiprion, and the monotypic family Ramphoprionidae with the genus Ramphoprion. READ MORE

6. 5. Silurian conulariids from the Lower Visby Beds on Gotland

   University essay from Lunds universitet/Geologiska institutionen

   Author : Fredrik Jerre; [1988]
   Keywords : geography; geology; Conulariids; Ctenoconularia monile; Ctenoconularia sp. a; Ctenoconularia sp. b; Conularina sp. a; Conularia scalaris; Metaconularia aspersa; Metaconularia sp. a; lower Silurian; Lower Visby Beds; Gotland; Sweden; Earth and Environmental Sciences;

   Abstract : The Silurian conulariid fauna in the Lower Visby Beds (uppermost Llandovery to lowermost Wenlock) on Gotland includes seven species: Ctenoconularia monile Lindström 1884, Ctenoconularia sp. a, Ctenoconularia sp. b, Conularina sp. a, Conularia scalaris Holm 1893, Metaconularia aspersa Lindström 1884 and Metaconularia sp. READ MORE