Results 81 to 90 of about 10,594 (229)

Multi‐Method Geochronology and P‒T Modeling Unravels the Thermo‐Tectonic History of the Rudall Province, Western Australia

Tectonics, Volume 45, Issue 2, February 2026.
Abstract The Rudall Province (RP) is a Paleo‐Mesoproterozoic belt that records numerous overprinting tectono‐metamorphic events. Situated on the eastern edge of the West Australian Craton (WAC), the RP represents a key area for understanding the Proterozoic assembly and subsequent tectonic history of Western Australia.
Alejandra Bedoya, Martin Hand, Xiao‐Fang He, Jade Anderson, David E. Kelsey, Christopher L. Kirkland, Stijn Glorie   +6 more
wiley   +1 more source

The crystal structure of phlogopite by neutron diffraction

Mineralogical Magazine, 1974
SummaryThe positions of all the atoms including hydrogen have been found by a partial three-dimensional single-crystal neutron-diffraction study in which about one-third of the reflections in the reciprocal sphere to 1·5 Å were measured. The hydroxyl group is perpendicular to the plane of the silicate sheets.
openaire   +1 more source

Evolution of the Source Mineralogy and Lithospheric Controls on Magmatism During the Northeast Atlantic Continental Breakup

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract The mid‐Norwegian Margin, part of the North Atlantic Igneous Province (NAIP), is a well‐studied volcanic rifted margin formed during the breakup between Greenland and Eurasia ∼56 Ma, with the largest accumulation of magmatic material hosted by the Vøring Margin section.
Emily H. Cunningham, Sarah Lambart, Pengyuan Guo, Sayantani Chatterjee, Christian Tegner, Autumn Hartley, Ashley M. Morris, Sverre Planke, Christian Berndt, Carlos A. Alvarez Zarikian, Peter Betlem, Henk Brinkhuis, Marialena Christopoulou, Eric C. Ferré, Irina Y. Filina, Joost Frieling, Dustin T. Harper, Morgan T. Jones, Jack Longman, John M. Millett, Geoffroy T. F. Mohn, Reed P. Scherer, Natalia Varela, Weimu Xu, Stacy L. Yager   +24 more
wiley   +1 more source

Near-Infrared Spectroscopic Study of Biotite–Phlogopite (Mg# = 30~99): OH-Stretching Modes and Mg# Content Prediction Equation

Crystals
Biotite–phlogopite minerals are a complete Mg–Fe isomorphism series of phyllosilicates. A Fourier transform infrared spectroscopy (FTIR) and electron microprobe analysis (EMPA) were conducted on end-member phlogopite, Mg–biotite, and annite samples.
Zhentao Yang, Mingyue He, Shaokun Wu, Mei Yang, Bijie Peng   +4 more
doaj   +1 more source

Petrology and Geochemistry of Mafic-Ultramafic Fragments from the Aguablanca Ni-Cu Ore Breccia, Southwest Spain [PDF]

, 2006
Aguablanca (southwest Spain) is the first economic Ni-Cu-(PGE) deposit found in southern Europe. Two features make it an unusual example of magmatic sulfide ore: it is related to the development of an Andeantype continental magmatic arc, and it is hosted
Alapieti, T., Gervilla, F., Lunar Hernández, Rosario, Martínez, C., Ortega Menor, Lorena, Piña García, Rubén   +5 more
core   +2 more sources

Melanite-bearing nepheline syenite fragments and 40Ar/39Ar age of phlogopite megacrysts in conduit breccia from the Poços de Caldas Alkaline Massif (MG/SP), and implications

Brazilian Journal of Geology
: The Poços de Caldas Alkaline Massif, located in southeast Brazil, is composed of tinguaites, as well as phonolites and nepheline syenites (NeS), together with assorted pyroclastic rocks.
Silvio Roberto Farias Vlach, Horstpeter Herberto Gustavo Jose Ulbrich, Mabel Norma Costas Ulbrich, Paulo Marcos Vasconcelos   +3 more
doaj   +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
Journal of the Geological Society (2015), http://jgs.lyellcollection.org/content/early/2015/06/03/jgs2014-151. Copyright © Geological Society of London 2015The spatial and temporal association of post-collisional granites and lamprophyre dykes is a ...
Archibald, Doug A., Braid, James A., Dupuis, Nicolle E., Murphy, J. Brendan, Nance, R. Damian, Shail, RK   +5 more
core   +1 more source

Metasomatism in the Ultrahigh-pressure Svartberget Garnet-peridotite (Western Gneiss Region, Norway): Implications for the Transport of Crust-derived Fluids within the Mantle [PDF]

, 2017
Garnet-peridotites often contain veins or layers of pyroxenite and eclogite of uncertain origin. We investigate the Svartberget garnet-peridotite from the northernmost ultrahigh-pressure domain in the Western Gneiss Region (WGR) in Norway and show that ...
Austrheim, H., Corfu, F., Davies, G. R., Hin, R. C., John, T., Vrijmoed, J. C.   +5 more
core  

Inference of minerals at Redondão kimberlite crater, Parnaíba Basin, Brazil, based on interpretation of airborne gamma-ray spectrometry and ASTER data

Journal of the Geological Survey of Brazil
This work reports how minerals at Redondão kimberlite pipe may be inferred through integrated interpretation of airborne gamma-ray spectrometry data and multispectral images derived from Advanced Spaceborne Thermal Emission and Reflection Radiometer ...
Adolfo Silva
doaj   +1 more source

Role of fluorine in the transfer of Be and the formation of beryl deposits: a thermodynamic model. [PDF]

, 2005
After a thorough study on the tracing of the emerald origin by oxygen data by Zwaan et al. [12], the paper by Moine et al. [4] entitled ‘The role of fluorine in the formation of the Mananjary emerald deposits (eastern Madagascar)' demonstrates through a ...
Ramboz, Claire
core   +4 more sources