Essays about: "middle Cambrian"

Showing result 11 - 13 of 13 essays containing the words middle Cambrian.

1. 11. Trilobites and bradoriid arthropods from the Middle and Upper Cambrian at Gudhem in Västergötland, Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Anders Bengtsson; [1999]
   Keywords : Arthropoda; Trilobita; Bradoriida; taxonomy; biostratigraphy; Middle Cambrian; Västergötland; Sweden; Earth and Environmental Sciences;

   Abstract : Middle and basal Upper Cambrian strata are well exposed in an old quarry at Gudhem in the Falbygden area of Västergötland, south-central Sweden. The exposures consist of finely laminated alum shale with scattered stinkstone (orsten) lenses, up to 2.3 m in diameter. READ MORE

3. 12. Uppermost Lower Cambrian-Middle Cambrian stratigraphy and sedimentary petrography of the Almbacken drill-core, Scania, southern Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Jacob Meyerson; [1997]
   Keywords : Middle Cambrian; Lower Cambrian; alum shale; limestones; stratigraphy; Almbacken; Forsemölla; Gislövshammar; Brantevik; Scania; Sweden; Earth and Environmental Sciences;

   Abstract : The uppermost Lower Cambrian and Middle Cambrian of the Almbacken drill-core, drilled 1949 in Södra Sandby, are described and correlated with other sections in Scania (the Gislövshammar-2 core and the Forsemölla, Gislövshammar and Brantevik sections). The core consists of Middle Cambrian bituminous alum shales with stinkstone lenses and three beds of fossiliferous limestone, the Andrarum, Exsulans, and "Fragment" limestones. READ MORE

4. 13. Trace fossils and Palaeoenvironments in the Middle Cambrian at Äleklinta, Öland, Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Björn Gedda; [1993]
   Keywords : micro-ripples; kinneyans; shrinkage cracks; Cruziana; Halopoa; Planolites; Protichnites; Teichichnus; Middle Cambrian; Äleklinta; Öland; Sweden; Rikets nät N 631715 W 195878; silt; shale; trace fossils; Earth and Environmental Sciences;

   Abstract : The Middle Cambrian at Äleklinta, Öland, consists predominantly of a heterolitic sequence with interbedded shale and siltstone. The sediments were deposited in a westfacing marine bay by northeastern, sometimes reversing currents. Long periods of slow mud settling alternated with short periods of silt influx. READ MORE