Essays about: "källbergart"

Found 2 essays containing the word källbergart.

1. 1. A geochemical characterization of the lower part of the Miocene shield-building lavas on Gran Canaria

   University essay from Lunds universitet/Geologiska institutionen

   Author : Romina Peetz; [2009]
   Keywords : Gran Canaria; shield-building lavas; Güigüi Formation; Earth and Environmental Sciences;

   Abstract : Ocean islands offer a great potential to provide information about mantle processes and the composition of the mantle. Gran Canaria is located in the centre of the Canary Island Archipelago and is well suited for such studies. A comprehensive study of the lower Miocene shield-building lavas is performed for this thesis. READ MORE

3. 2. Titanium- and chromium-rich opaque minerals in condensed sediments : chondritic, lunar and terrestrial origins

   University essay from Lunds universitet/Geologiska institutionen

   Author : Sanna Holm; [2008]
   Keywords : Ilmenite; chrome spinel; 3He; lunar impact ejecta; source rock; Middle Ordovician; Late Eocene; ilmenit; kromspinell; impakt ejekta; källbergart; mellanordovicium; sen eocen; Earth and Environmental Sciences;

   Abstract : Evidence from terrestrial sedimentary successions indicate that the amount of extraterrestrial material reaching Earth is not constant, but has been increased during parts of the Phanerozoic. An increase in the flux of extraterrestrial material to Earth has been proposed for the Middle Ordovician and the Late Eocene. READ MORE