Sökning: "North Atlantic craton"
Hittade 2 avhandlingar innehållade orden North Atlantic craton.
1. New constraints on paleoreconstructions through geochronology of mafic dyke swarms in North Atlantic Craton
Sammanfattning : Earth history is punctuated by a series of events of supercontinent amalgamation and break-up. Fragments of old continents display rifted margins and orogenic sutures that testify their involvement in supercontinent cycles. LÄS MER
2. Assessing the reliability of detrital zircon in Early-Earth provenance studies
Sammanfattning : Our understanding of the Early Earth and the processes that have shaped its evolution have spawned predominantly from the geochemical and isotopic signatures of a small number of zircon populations around the world. Studies of trace element distributions, Hf and O isotope systematics as well as mineral inclusion chemistry in detrital zircon are combined with U-Pb chronology in order to constrain source rock characteristics. LÄS MER