The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces
Geophysical Monograph Series, Page 229-246., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson +2 more
wiley +12 more sources
Geochemistry, Geophysics, GeosystemsStable and inert under most conditions, zircon can be dissolved and precipitated by aqueous fluids in the upper crust. Geochemical models using currently available thermodynamic properties for Zr aqueous species at 0.2 GPa predict that zircon solubility ...
John C. Ayers, Chen Zhu
doaj +2 more sources
Fixed Points of Zircon Automorphisms
Order, 2008 A zircon is a poset in which every principal order ideal is finite and equipped with a so-called special matching. We prove that the subposet induced by the fixed points of any automorphism of a zircon is itself a zircon. This provides a natural context in which to view recent results on Bruhat orders on twisted involutions in Coxeter groups.
Hultman, Axel,, Axel Hultman
openaire +5 more sources
Zircon dissolution in a ductile shear zone, Monte Rosa granite gneiss, northern Italy [PDF]
, 2008 The sizes, distributions and shapes of zircon grains within variably deformed granite gneiss from the western Alps have been studied. Zircon shows numerous indicators of a metamorphic response in both the host gneiss and a 5 cm wide continuous ductile ...
Dempster, T. J. +4 more
core +1 more source
Detrital zircon record and tectonic setting [PDF]
, 2012 Funding: University of St AndrewsDetrital zircon spectra reflect the tectonic setting of the basin in which they are deposited. Convergent plate margins are characterized by a large proportion of zircon ages close to the depositional age of the sediment,
Hawkesworth, Chris +5 more
core +1 more source
Does Zircon Shape Retain Petrogenetic Information?
Geochemistry, Geophysics, Geosystems, 2023 Zircon shape is commonly reported during geochronology and geochemistry analyses of igneous, metamorphic, and sedimentary rocks, but the relationship of zircon shape to primary growth environmental conditions remains poorly constrained.
T. Scharf +4 more
doaj +1 more source
SHRIMP ion probe zircon geochronology and Sr and Nd isotope geochemistry for southern Longwood Range and Bluff Peninsula intrusive rocks of Southland, New Zealand [PDF]
, 2006 Permian–Jurassic ultramafic to felsic intrusive complexes at Bluff Peninsula and in the southern Longwood Range along the Southland coast represent a series of intraoceanic magmatic arcs with ages spanning a time interval of 110 m.y.
Ireland, Trevor R. +7 more
core +1 more source
The effect of low-temperature annealing on discordance of U–Pb zircon ages
Scientific Reports, 2021 Discordant U–Pb data of zircon are commonly attributed to Pb loss from domains with variable degree of radiation damage that resulted from α-decay of U and Th, which often complicates the correct age interpretation of the sample.
Maria Herrmann +5 more
doaj +1 more source
Improvement of the Thermal Stability of Zircon by Formation of the Solid Solution of Cr in Zircon
Journal of Asian Ceramic Societies, 2020 In this paper, the effects of Cr2O3 additive on the thermal stability and zircon decomposition were investigated. The substitution of Cr at zircon lattice and the formation of solid solution were also discussed. Cr2O3 was added at up to 4 wt.% to zircon.
Hudsa Majidian +2 more
doaj +1 more source
Detrital zircon geochronology of the Grenville/Llano foreland and basal Sauk Sequence in west Texas, USA [PDF]
, 2014 We thank the University of St. Andrews and Natural Environment Research Council (NERC grant NE/J021822/1) for funding support. The NERC Isotope Geosciences Facilities Steering Committee (IP-1326-0512) provided additional funding support.U-Pb detrital ...
Roberts, Nick M.W. +11 more
core +1 more source