Auflistung nach Schlagwort "zircon"
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A history of violence: magma incubation, timing and tephra distribution of the Los Chocoyos supereruption (Atitlán Caldera, Guatemala)
(Journal of Quaternary Science, 2021-01-11)The climactic Los Chocoyos (LCY) eruption from Atitlán caldera (Guatemala) is a key chronostratigraphic marker for the Quaternary period given the extensive distribution of its deposits that reached both the Pacific and ... -
Der quartäre Osteifel—Vulkanismus im Rahmen der Lößbildung—ein Beitrag zur Lößgenese
(E&G – Quaternary Science Journal; Vol.30, No. 1)Seit dem Mittelpleistozän ist im Laacher Vulkangebiet, einem räumlich präzise faßbaren Areal, ein intensiver Vulkanismus überliefert. Mittels Schwermineralanalysen und Korngrößenuntersuchungen an Lössen der engeren und ... -
Multi‐Band Raman Analysis of Radiation Damage in Zircon for Thermochronology: Partial Annealing and Mixed Signals
(Geochemistry, Geophysics, Geosystems, 2022-01-24)Four zircon Raman bands were previously calibrated to give consistent estimates of the accumulated self‐irradiation α‐dose in unannealed volcanic samples. Partial annealing of radiation damage produces inconsistent values ... -
Tracing southern Gondwanan sedimentary paths: A case study of northern Namibian late Palaeozoic sedimentary rocks
(Sedimentology, 2022-02-15)The northern Namibian Karoo‐aged successions are part of a Gondwana‐wide sedimentary system emerging at the Carboniferous–Permian boundary and existing for more than 50 Ma. The Karoo Supergroup sedimentary successions are ...