Results 71 to 80 of about 1,350 (208)
Resource Geology, Volume 76, Issue 1, January‐December 2026.Sulfur isotope compositions of pyrite (δ34S = −2.80‰ to +4.43‰) cluster near 0‰, indicating a dominantly magmatic–metamorphic source. Fluid inclusion assemblages record a systematic evolution from CO2‐rich to mixed CO2‐H2O and subsequently to H2O‐dominant fluids.
Aung Min Oo +5 more
wiley +1 more source
Tectonics, geology and origins of Te Riu‐a‐Māui / Zealandia
New Zealand Journal of Geology and Geophysics, Volume 68, Issue 4, Page 531-567, December 2025.ABSTRACT Te Riu‐a‐Māui / Zealandia is a 95% submerged, five million square km southern hemisphere continent that includes the islands of New Zealand and New Caledonia. For the last 45 million years (Ma) Zealandia has been cut by the Pacific‐Australian plate boundary which today changes character from a west‐dipping subduction zone in the north to ...
Nick Mortimer
wiley +1 more source
, 2015 Lamprophyre dikes emplaced in a Jurassic granite at the southeastern margin of the North China Craton (NCC) carry different types of xenoliths. Here, we report a combined study of zircon U–Pb ages and whole-rock geochemistry of the xenoliths, as well as ...
Wu, F. +15 more
core +1 more source
Secular Variation in the North American Kimberlite Formation: The Variable Connection to LLSVPs
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.Abstract Kimberlites are rare and perplexing igneous rocks that may represent the deepest‐sourced melt type extracted from within the Earth's mantle, and their origin may be associated with Large Low Shear Velocity Provinces (LLSVPs) along the core‐mantle boundary.
C. Adam, P. D. Kempton
wiley +1 more source
, 2000 An ultramafic lamprophyre dyke is described from the otherwise tholeiitic Ferrar magmatic province of Antarctica. We report an Ar-Ar age of 183 ± 2.2 Ma for the dyke, indistinguishable from those of the Ferrar tholeiites.
Millar, I.L. +4 more
core +4 more sources
Activities of Japanese Party in McMurdo Sound Area During the 1978-1979 Field Season
Antarctic Record, 1980 To carry out four research programs, three Japanese scientists visited McMurdo Station and Victoria Land for a period from October 27, 1978 to January 19, 1979. Search for Antarctic meteorites : A U. S.
Fumihiko Nishio +2 more
doaj +1 more source
Thermo‐Mechanical Rift Evolution of Large Igneous Province Crust
Tectonics, Volume 44, Issue 9, September 2025.Abstract Numerical models, coupled with observational data, have proven crucial for addressing fundamental questions regarding extensional processes from continental rift to mid‐ocean ridge (MOR). However, extensional processes at Large Igneous Provinces (LIP), a distinct type of lithosphere, have not been examined, leaving a thorough comprehension of ...
L. Magri +8 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.Abstract Mantle xenoliths recovered from the modern backarc region of the northern Altiplano Plateau record metasomatism by slab‐derived silicic melts, and a suite of Quaternary volcanics suggest that melting of accreted crustal material has persisted since shallow subduction in the Oligocene.
C. D. Hiett +2 more
wiley +1 more source
40Ar/39Ar phlogopite geochronology of lamprophyre dykes in Cornwall, UK: new age constraints on Early Permian post-collisional magmatism in the Rhenohercynian Zone, SW England [PDF]
, 2015 The spatial and temporal association of post-collisional granites and lamprophyre dykes is a common but enigmatic relationship in many orogenic belts, including the Variscan orogenic belt of SW England. The geology of SW England has long been interpreted
RK Shail (21814886) +5 more
core +2 more sources