Results 61 to 70 of about 5,043 (208)

BARITE, HEMATITE AND CINNABAR ORE DEPOSITS IN THE DUSINA AREA, MID-BOSNIAN SCHIST MOUNTAINS

Rudarsko-geološko-naftni Zbornik, 1996
In the Dusina area, which is built up of Lower Palaeozoic metasediments, Devonian carbonate complex and Upper Palaeozoic metarhyolites unconformab1y overlain by Upper Permian sediments, numerous ore occurrences have been investigated: (a) "stratabound ...
Ivan Jurković
doaj  

Anatexis of meta-marls generates (silico-)carbonatites in orogenic settings

Communications Earth & Environment
The genesis of anatectic carbonatites – i.e., rocks crystallized from carbonate melts generated by partial melting of metasediments – remains unclear, though essential to elucidate their occurrence.
Chiara Groppo, Fabrizio Tursi, Maria Luce Frezzotti, Andrea Maroni, Sara Nerone, Franco Rolfo   +5 more
doaj   +1 more source

The geologic potentials of Riau Islands Province and its development design

Jurnal Perspektif Pembiayaan dan Pembangunan Daerah, 2018
Geologically Riau Islands is located in the topography of the old stadium erosion. The morphology is characterized by smooth hills with convex slopes and alluvial plain consisting of the erosion products. The morphology exhibits the remnants of peneplain
Emi Sukiyah, Vijaya Isnaniawardhani, Adjat Sudradjat, Fery Erawan   +3 more
doaj   +1 more source

Architecture of the Patrimonio Fault System and the Miocene Post‐Orogenic Extension in Alpine Corsica (France)

Tectonics, Volume 45, Issue 8, August 2026.
Abstract The exhumation of Alpine Corsica is the result of Oligocene‐Miocene lithospheric back‐arc extension in the wake of the eastward migration of Apenninic subduction. Although the geometry, kinematics and timing of ductile detachments are well constrained, the brittle extension leading to final exhumation of Alpine Corsica is less documented.
Simone Masoch, Michele Fondriest, Giulio Di Toro, Giancarlo Molli, Nereo Preto, Lorenzo Tavazzani, Francesca Prando, Giorgio Pennacchioni   +7 more
wiley   +1 more source

Dehydroxylation of Minerals of Gadisunkapur Area with Special Reference to FTIR and Thermal Study

International Journal of Economic and Environment Geology, 2020
This paper attempts to explain the presence of OH group for micas along with some sulfate, chlorite, quartz and feldspar minerals. These minerals are found to be associated with barite vein, metasediments (quartz-chlorite schist ...
Marularadhya C. Hiremath, A. Sreenivasa
doaj   +1 more source

Metasediments in the Alahina Sector and Associated Mineralization (North-Eastern Guinea)

Open Journal of Geology, 2019
The Alahina sector is located in the North-East of Guinea, precisely in the Siguiri volcano-sedimentary basin. It consists mainly of meta-sediments traversed by Paleoproterozoic pyroclastite, granite, monzogranite and granodiorite veins as well as Mesozoic dolerite and gabbros veins.
Koffi Germain Tchokpon, Christophe Kaki, Glodji Luc Adissin, Soulémana Yessoufou, Mory Kourouma   +4 more
openaire   +2 more sources

Kamafugite Magma Pathways and Lava‐Flow Paleotopography From Three‐Dimensional Audiomagnetotelluric Imaging Constrained by Borehole Data

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract An audiomagnetotelluric (AMT) survey was conducted within the Alto Paranaíba Igneous Province, southeastern Brazil, to delineate shallow occurrences of kamafugite, a rare ultrapotassic volcanic rock worldwide. A dense grid of AMT stations was deployed, allowing the construction of a high‐resolution 3D electrical resistivity model ...
Lucca M. Franco, Emanuele F. La Terra, Liliane P. Panetto, Adevilson O. Alves, Miguel A. Tupinambá, Sergio L. Fontes, Emin U. Ulugergerli   +6 more
wiley   +1 more source

Evidence from HP/UHP metasediments for recycling of isotopically heterogeneous potassium into the mantle

, 2022
International audienceAbstract Potassium isotopes may provide a novel approach for fingerprinting recycled sediments in the mantle due to the significant differences in K abundance and isotopic ratio between subducting sediment and the mantle.
Wang, Ze-Zhou, Teng, Fang-Zhen, Busigny, Vincent, Liu, Sheng-Ao   +3 more
core   +1 more source

Precambrian crustal evolution and Cretaceous–Palaeogene faulting in West Greenland: Zircon geochronology from the Kangaatsiaq–Qasigiannguit region, the northern part of the 1.9–1.8 Ga Nagssugtoqidian orogen, West Greenland [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2006
The Kangaatsiaq–Qasigiannguit region in the northern part of the Palaeoproterozoic Nagssugtoqidian orogen of West Greenland consists of poly-deformed orthogneisses and minor occurrences of interleaved, discontinuous supracrustal belts. Laser ablation ICP-
Conelly, James N., Thrane, Kristine
doaj  

Evolution in Fluid Composition During Subduction

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Fluid‐rock reactions play important roles in seismicity, arc‐magma chemistries, and volatile cycling at convergent plate boundaries. In subduction environments, metamorphic reactions involving hydrous fluids facilitate metasomatic alteration and mass transport.
A. A. Helm, M. J. Caddick, R. J. Bodnar
wiley   +1 more source