Results 81 to 90 of about 10,226 (223)

Petrogenesis and age of skarns associated with felsic and metamafic dykes from the Paraíba do Sul Complex, southern Espírito Santo State

Brazilian Journal of Geology
: This paper concerns the study of petrography, mineral chemistry and geochronology of skarns generated at the contact of marbles of the Paraíba do Sul Complex with felsic and metamafic dykes in the southern Espírito Santo State.
Raissa Beloti de Mesquita, Hanna Jordt-Evangelista, Gláucia Nascimento Queiroga, Edgar Batista de Medeiros Júnior, Ivo Antônio Dussin   +4 more
doaj   +1 more source

Neoarchean Arc Magmatism and Crust Recycling in the Northern Marginal Zone of the Limpopo Complex, Zimbabwe: New Insights From Zircon U‐Pb‐Hf Isotopes of a Charnockite Suite

Geological Journal, Volume 61, Issue 3, Page 566-592, March 2026.
Charnockites with 2691–2607 Ma magmatic ages from the NMZ show arc‐magmatic geochemical signatures. They correspond to the lower‐crustal equivalent of the Chilimanzi Suite Granite in the Zimbabwe Craton. Lu‐Hf isotopic data of magmatic zircons show negative εHf(t) values (−11.18 to −2.20) with TDMC ages of 3699–3158 Ma, suggesting their protolith ...
Toshiaki Tsunogae, Md. Sazzadur Rahman, Gao Pin, M. Santosh, Wataru Fujisaki, Sam Uthup, Prince Mandingaisa   +6 more
wiley   +1 more source

Geoheritage Assessments of Cascades and Waterfalls in Batu Melintang, Jeli, Kelantan, Malaysia [PDF]

BIO Web of Conferences
The study area is between a dense forest and a rubber plantation in Kelantan’s Jeli District. This study aims to assess the geoheritage values of Lata Hokkaido, Lata Janggut, Marina Waterfall and Lata Bobby. The lithology of the study area is composed of
Sulaiman Nursufiah, Yazizul Rahman Siti Nur Adilah, Wan Ahmad Khalil Wan Ahmad Aqil Fahmi, Safai Azri Sulaimi, Sulaiman Noorzamzarina   +4 more
doaj   +1 more source

Origin and hydrothermal alteration of rare-metal granites in the Al-Hamra area, northeastern Arabian Shield, Saudi Arabia [PDF]

, 2007
The Jabal Hamra (538 Ma) and Jabal Abu ad Dud plutons in northeast Saudi Arabia are epizonal bodies consisting of alkali feldspar granite and alkali feldspar syenite.
Qadhi, Talal M.
core   +1 more source

Evolution of the Transantarctic Basin (Southern Gondwana): Insights From Quantitative Sandstone Petrography

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
The deposition of the sandstone sedimentary succession of the Beacon Supergroup lasted more than 200 Myr (Devonian to Early Jurassic) in Victoria Land and nearby territories in the so‐called Transantarctic Basin, recording crucial events in the history of the Earth.
Luca Zurli, Marco Fioraso, Matteo Perotti, Andrea Di Giulio, Valerio Olivetti, Samuele Pezzoli, Valentina Corti, Gianluca Cornamusini   +7 more
wiley   +1 more source

PETROCHEMISTRY AND RADIOACTIVITY OF GABAL ABU AQARIB ALKALI FELDSPAR GRANITE, CENTRAL EASTERN DESERT, EGYPT

Delta Journal of Science, 2006
The present work deals with geology, geochemistry and radiometry of Gabal Abu Aqarib Alkali Granite, Central Eastern Desert, Egypt.  Gabal Abu Aqarib about 136 km2, and represents a part of the late Precambrian Arabian Nubian Shield. It is of alkali feldspar granite composition and may be considered epeiorogenic uplifts granitoids.
Ata A. El Shafi, A. El-Naggar
openaire   +1 more source

Initiation of the Ferrar Large Igneous Province Started in Southern North Victoria Land, Antarctica, With Shallow Emplacement of Sills Causing Magma‐Soft‐Rock Interaction and Phreatomagmatic Eruptions

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
Early Jurassic volcanism was in the southern north Victoria Land portion of the Ferrar Large Igneous Province preceded by multiple phases of shallow‐level intrusions of Ferrar sills into the 300 m thick cover of sedimentary rocks of the Triassic‐Jurassic Victoria Group.
Lothar G. Viereck, Jörg Büchner, Robert Schöner, Jörg W. Schneider, Benjamin Bomfleur, Jan Tympel, Ricarda Hanemann, Axel Gerdes   +7 more
wiley   +1 more source

Accessory minerals and evolution of tin-bearing S-type granites in the western segment of the Gemeric Unit (Western Carpathians)

Geologica Carpathica, 2018
The S-type accessory mineral assemblage of zircon, monazite-(Ce), fluorapatite and tourmaline in the cupolas of Permian granites of the Gemeric Unit underwent compositional changes and increased variability and volume due to intensive volatile flux.
Broska Igor, Kubiš Michal
doaj   +1 more source

Rapid Slab Rollback Drives Early Cretaceous Back‐Arc Extension in NE China: Implication for Crustal Growth and Episodic Porphyry Mineralization

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract The subduction of the Paleo‐Pacific Plate beneath the NE Asian continental margin induced extensive magmatism, providing an excellent opportunity to investigate the interplay between plate dynamics, arc magmatism, continental crust formation, and porphyry mineralization.
Honghui Wang, Xinghua Ma, Simon A. Wilde, Yong Lai, Zhenhua Zhou, Jinyu Yan   +5 more
wiley   +1 more source

Geochemistry of Late Triassic Weak Peraluminous A-Type Karimun Granite, Karimun Regency, Riau Islands Province [PDF]

, 2017
DOI: 10.17014/ijog.4.1.21-37Karimun is an island with various geological deposits: tin, granite, sand, and others. The tin deposit in Karimun is related to the granitoid tin belt which extends from Myanmar to western Indonesia.
Irzon, R. (Ronaldo)
core   +1 more source