Sökning: "Orthoceratite Limestone"

Hittade 2 uppsatser innehållade orden Orthoceratite Limestone.

1. 1. The Ordovician Orthoceratite Limestone and the Blommiga Bladet hardground complex at Horns Udde, Öland

   Kandidat-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Magnus Eriksson; [2010]
   Nyckelord :Orthoceratite Limestone; hardground; Lanna; Volkhov; Dapingian; Gastrochaenolites oelandicus; Blommiga Bladet; sea-level; Ortoceratitkalkstenen; hårdbotten; havsnivå; Earth and Environmental Sciences;

   Sammanfattning : Blommiga Bladet, Flowery Sheet in English, is an Early Ordovician (basal Dapingian) hardground complex in the lowermost part of the Orthoceratite Limestone in southern Sweden. It formed in an epicontinental sea, across Baltoscandia and has been described also from Russia as “Steklo”, from Estonia as “Pustakkith” and from deep borings in Poland, thus covering an area exceeding 500,000 km². LÄS MER

3. 2. Extraterrestrisk och terrestrisk kromrik spinell i fanerozoiska kondenserade sediment

   Magister-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Maria Nolvi; Gunilla Thorelli; [2006]
   Nyckelord :physical geography; condensed sediments; cyclic sedimentation; spherules; chrome spinels; extraterrestrial chromite; cyklisk sedimentation; kondenserade sediment; sfäruler; kromspineller; geomorphology; pedology; cartography; climatology; naturgeografi; geomorfologi; marklära; kartografi; klimatologi; extraterrestrisk kromit; Earth and Environmental Sciences;

   Sammanfattning : This study aims to assess the normal inflow of extraterrestrial chromite to Earth. The results from the investigation are compared to earlier studies of middle Ordovician Orthoceratite Limestone in which 1 - 3 extraterrestrial chromite grains ( >63 ƒÊm ) per kilogram limestone were found. LÄS MER