Sökning: "lunar impact ejecta"

Hittade 1 uppsats innehållade orden lunar impact ejecta.

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

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Sanna Holm; [2008]
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER