Results 61 to 70 of about 7,479 (200)
Contact Metamorphism in Southern California [PDF]
, 1954 A highly condensed introduction to "Contact metamorphism in southern California" is obviously not the place in which to indulge in semantic niceties nor to engage in terminological tussles, and thus the title is not intended to reflect a carefully ...
Campbell, Ian
core
Resource Geology, Volume 76, Issue 1, January/December 2026.The Akatani Fe deposit in NE Japan has been regarded as a skarn deposit because iron‐oxide ores occur within marble‐hosted skarn near the Cretaceous Ninoujidake granite. U–Pb dating of fluorapatite in the skarn indicates that this skarn formed in the Late Cretaceous, contemporaneous with the granite.
Kotaro Seno +6 more
wiley +1 more source
A Study on the Chromian Tremolite from Guleman, Elazığ
Bulletin of the Mineral Research and Exploration, 1975 Chemical composition, optical properties, D.T.A. curve, unit cell dimensions and indexed powder diffraction pattern of the chromium-rich tremolite from Guleman District are given.
Işık KUMBASAR
doaj
Sedimentology, Volume 73, Issue 1, Page 83-102, January 2026.ABSTRACT Tubular and curviplanar structures, outlined by the occurrence of haematite/goethite, chlorite, quartz and albite, are developed in the Middle Permian Broughton Formation in the southern Sydney Basin, New South Wales, Australia. These structures are interpreted as fluid‐flow pathways resulting from the ejection of heated pore fluids as a thick
Paul F. Carr +5 more
wiley +1 more source
西南日本の熱変成超苦鉄質岩体中のかんらん石と輝石の組成変化に関する覚書 [PDF]
, 2010 This short article presents some diagrams showing the compositional variations of primary and metamorphic olivine, orthopyroxene and clinopyroxene in peridotites and serpentinites from thermally metamorphosed ultramafic complexes in SW Japan. In contrast
Nozaka, Toshio
core +1 more source
American Journal of Industrial Medicine, Volume 68, Issue 12, Page 1037-1047, December 2025.ABSTRACT Public health registries collect and maintain demographic and health data on a cohort of people with a common disease or exposure. While disease registries have proliferated in recent decades, registries comprising persons with potentially hazardous exposures—known commonly as exposure registries—are rare.
Sammy Almashat +3 more
wiley +1 more source
GeosciencesThe Kavokta deposit in Russia contains gray and black dolomite-type nephrite, which is in high demand commercially. Although the fact that black nephrite has been found in several deposits, the reasons for its color are not well understood.
Evgeniy V. Kislov +4 more
doaj +1 more source
General geology, alteration, and iron deposits in the Palaeoproterozoic Misi region, northern Finland [PDF]
, 2003 The Paleoproterozoic Misi region forms the northeastern part of the Peräpohja Schist Belt in northern Finland. The area comprises mafic volcanic and sedimentary rocks, differentiated gabbros, and late-orogenic granitoids.
Eero Hanski, Pasi Eilu, Tero Niiranen
core +1 more source
Raman Spectroscopy of Amphibole Inclusions in Emeralds
Journal of Raman Spectroscopy, Volume 56, Issue 11, Page 1228-1234, November 2025.Emeralds containing elongated amphibole inclusions from Austria, Russia, Zambia and Zimbabwe were investigated with an optical microscope and Raman spectroscopy. The inclusions have various sizes and shapes; curved inclusions are frequently observed in emeralds from Zimbabwe and rarely in those from Zambia.
Stefanos Karampelas +2 more
wiley +1 more source
Serpentinite dehydration at low pressures
Swiss Journal of Geosciences, 2022 Petrographic observations combined with mineral compositional analyses constrain the phase relations of prograde metamorphosed serpentinites in the Bergell contact aureole (Italy).
Elias D. Kempf +2 more
doaj +1 more source