Essays about: "Lenodus variabilis"

Found 2 essays containing the words Lenodus variabilis.

1. 1. A Russian record of a Middle Ordovician shower : extraterrestrial chromite in Volkhovian-Kundan (lower Darriwilian) strata at Lynna River, St. Petersburg Region

   University essay from Lunds universitet/Geologiska institutionen

   Author : Anders Lindskog; [2011]
   Keywords : Lynna River; extraterrestrial chromite; fossil meteorites; Volkhov; Kunda; Darriwilian; heavy minerals; Lenodus variabilis; Lynna; utomjordisk kromit; fossila meteoriter; tungmineral; Earth and Environmental Sciences;

   Abstract : Numerous fossil meteorites and high concentrations of sediment-dispersed extraterrestrial chromite (EC) grains with typical ordinary chondritic composition have previously been documented from 467±1.6 Ma Ma lower Kundan (Middle Ordovician) strata. READ MORE

3. 2. Early to early Middle Ordovician conodont biostratigraphy of the Tamsalu drill core, central Estonia

   University essay from Lunds universitet/Geologiska institutionen

   Author : Lisa Sjöstrand; [2003]
   Keywords : Ordovician; Latorpian; Volkhovian; Kundan; Aserian; conodonts; biostratigraphy; Parapaltodus n. sp. A; Texania sp. A; Tamsalu; Estonia; Earth and Environmental Sciences;

   Abstract : This investigation examines the distribution of conodont elements in the Early to early Middle Ordovician Latorpian, Volkhovian, Kundan and Aserian stages of the Tamsalu drill core in central Estonia. Slightly more than 24, 600 conodont elements from 17 samples were examined, and the biostratigraphic results were compared to previous works on conodont biostratigraphy from localities in Estonia, Russia and Öland, Sweden. READ MORE