Results 61 to 70 of about 29,586 (208)
Journal of Metamorphic Geology, Volume 44, Issue 4, Page 311-336, May 2026.ABSTRACT This study investigates garnet–clinopyroxene double‐layered coronae in a metagabbronorite from the high‐grade metamorphic Gföhl Unit (Bohemian Massif). The coronae formed at the interfaces between relic magmatic orthopyroxene, still preserved in the cores of the coronae, and the plagioclase‐rich rock matrix.
Rene Asenbaum +5 more
wiley +1 more source
High‐Titanium Zircon Rims in Rhyolite – A Reflection of Adiabatic Ascent?
Geological Journal, Volume 61, Issue 4, Page 1029-1040, April 2026.The ascent of granitic magma from source to emplacement is rapidly achieved through dyking, resulting in negligible heat loss to the surrounding wallrock (i.e., adiabatic). Zircon growth during ascent can record the changing magma conditions including adiabatic cooling and heating, resulting in high titanium rims on low titanium cores without ...
Carson Kinney +2 more
wiley +1 more source
Геодинамика и тектонофизикаThis paper presents the results of a study of isotopic systems in minerals and rocks in southern margin of the epi-Archean Karelian craton in the zone of its junction with the Svecofennian mobile belt.
Sh. K. Baltybaev +2 more
doaj +1 more source
Mineral chemistry of late Variscan gabbros from central Spain: constraints on crystallisation processes and nature of the parental magmas [PDF]
, 2015 © 2016. Universidad Complutense de Madrid. The commercial rights of the printed and online versions of Journal of Iberian Geology are property of the Universidad Complutense de Madrid (UCM) and the Consejo Superior de Investigaciones CientÍficas (CSIC),
Jeffries, T +3 more
core +3 more sources
Structure of the North‐Central Chile Subduction Zone From Local Earthquake Tomography
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.Abstract The fluid cycle in subduction zones prescribes large parts of its structure and seismogenic behavior. Background seismicity inside the downgoing slab is linked to fluid release from dehydration reactions, whereas fluid overpressure along the plate interface can alter interplate coupling, megathrust earthquakes, and the presence or absence of ...
Nicolás Hernández‐Soto +8 more
wiley +1 more source
Frontiers in Earth ScienceThe Masjeddaghi porphyry Cu-Au deposit is situated in the Alborz-Azarbaijan structural zone of northwest Iran. Chemical compositions of rock-forming (biotite, amphibole) and accessory minerals (magnetite, apatite) in the potassic to propylitic altered ...
Zohreh Rahnama +3 more
doaj +1 more source
Geologia Croatica, 2010 Amphibole bearing parageneses from the western part of Mt. Psunj (Croatia) record evidence of prograding metamorphism. Opticaland microprobe analyses, together with thermobarornetric evaluationson amphibole bearing parageneses, show a zonation with Si ...
Dražen Balen +2 more
doaj +1 more source
Mineralogy, geochemistry and metamorphism of the early Proterozoic Vähäjoki iron ores, northern Finland [PDF]
Bulletin of the Geological Society of Finland, 1991 The Vähäjoki iron ores occupy the uppermost part of the Karelian (Early Proterozoic) quartzite-dolomite sequence deposited on the late Archaean basement in southern Lapland.
J. Liipo, K. Laajoki
doaj +1 more source
Asbestos Trust Transparency [PDF]
, 2018 Originally and for many years, the primary defendants in asbestos cases were companies that mined asbestos or manufactured amphibole-containing thermal insulation.
Behrens, Mark A.
core +1 more source
Mount Etna as a Leaking Pipe of Magmas From the Low Velocity Zone
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.Abstract Mount Etna, one of the most active volcanoes on Earth, exhibits unusual characteristics in terms of its geological setting, effusion rate, and volatile content. Mount Etna is closely related to the subduction of the Ionian plate below Eurasia, but, chemically, Mount Etna lavas are akin to intraplate magmatism.
Sebastien Pilet +6 more
wiley +1 more source