Results 1 to 10 of about 62,738 (358)

Research progress and prospects of coal petrology and coal quality in China

International Journal of Coal Science & Technology, 2020
Clean utilization of coal depends on the quality of raw coal, which depends on the coal-forming parent materials (petrology and chemical composition of coal), the multiple media of the coal-forming environment, and some epigenetic conditions, such as ...
Yuegang Tang, Ruiqing Li, Shaoqing Wang
doaj   +2 more sources

The nucleosynthetic fingerprint of the outermost protoplanetary disk and early Solar System dynamics. [PDF]

Sci Adv
Knowledge of the nucleosynthetic isotope composition of the outermost protoplanetary disk is critical to understand the formation and early dynamical evolution of the Solar System. We report the discovery of outer disk material preserved in a pristine meteorite based on its chemical composition, organic-rich petrology, and 15N-rich, deuterium-rich, and
van Kooten E, Zhao X, Franchi I, Tung PY, Fairclough S, Walmsley J, Onyett I, Schiller M, Bizzarro M.   +8 more
europepmc   +2 more sources

AgeSpectraAnalyst: A MATLAB based package to model zircon age distributions in silicic magmatic systems [PDF]

MethodsX, 2023
In the last decade, improvements in the analytical precision achievable by zircon U-Pb geochronological techniques have allowed to resolve complexities of zircon crystallization histories in magmatic rocks to an unprecedented level.
Lorenzo Tavazzani, Jörn-Frederik Wotzlaw, Rita Economos, Dawid Szymanowski, Oscar Laurent, Olivier Bachmann, Cyril Chelle-Michou   +6 more
doaj   +2 more sources

The Relationship between the Slope Hill and Bedrock with Some Soil Properties [PDF]

مجله آب و خاک, 2023
Introduction Changes in soil properties depend on factors such as climate, topography, landscape features, altitude, parent material, and vegetation. The quantity and quality of soils obtained from different rocks (igneous, sedimentary and metamorphic ...
M. Jafarian, A. Golkarian, H. Emami
doaj   +1 more source

Rapid response petrology for the opening eruptive phase of the 2021 Cumbre Vieja eruption, La Palma, Canary Islands

Volcanica, 2022
How and why magmatic systems reactivate and evolve is a critical question for monitoring and hazard mitigation efforts during initial response and ongoing volcanic crisis management.
M. Pankhurst, J. Scarrow, Olivia A. Barbee, J. Hickey, Berverly C. Coldwell, G. Rollinson, J. A. Rodríguez-Losada, A. Martin Lorenzo, F. Rodríguez, W. Hernández, David Calvo Fernández, P. Hernández, N. Pérez   +12 more
semanticscholar   +1 more source

Petrology and geochemistry of Eocene volcanic rocks from southeast of Khur (Isfahan province, Central Iran)

Journal of Economic Geology, 2022
Introduction Subduction-related magmas are characterized by enrichment of large ion lithophile elements (LILEs), light rare earth elements (LREEs) and depletion in high field strength elements (HFSEs) (Harangi et al., 2007). These geochemical signatures
Paniz Shadman, Ghodrat Torabi
doaj   +1 more source

Petrophysical and mechanical properties of the Struganik limestone (Vardar zone, Western Serbia) [PDF]

Geološki Anali Balkanskoga Poluostrva, 2011
The Struganik limestone has been increasingly popular in recent years for interior and exterior building applications, due to easy workability, low cost and multi purpose suitability.
Gajić Violeta, Matović Vesna, Vasić Nebojša, Srećković-Batoćanin Danica   +3 more
doaj   +1 more source

Varying processes, similar results: How composition influences fragmentation and subsequent feeding of large pyroclastic density currents

Frontiers in Earth Science, 2022
Unlike their silicic counterparts, mafic eruptions are known for being on the low-end of the explosivity spectrum with eruption styles commonly ranging from effusive to Hawaiian fire fountaining.
Olivier Bernard, Olivier Bernard, Olivier Bernard, Caroline Bouvet de Maisonneuve, Caroline Bouvet de Maisonneuve, Laurent Arbaret, Laurent Arbaret, Kazuhide Nagashima, Jeffrey Oalmann, Arief Prabowo, Antonius Ratdomopurbo   +10 more
doaj   +1 more source

Магнитные и плотностные характеристики магматических пород в районе УАС Академик Вернадский

Український антарктичний журнал, 2020
В результате исследований магнитных и плотностных свойств более чем 500 образцов мезозойских и па­лео­ценовых интрузивных и вулканогенных пород, отобранных в западной части Антарктического полу­ост­рова (район станции Академик Вернадский), получена новая
V. Shpyra, V. Bakhmutov, L. Bakhmutova, D. Gladkochub, A. Koshelev, T. Skarboviychuk, V. Yakukhno   +6 more
doaj   +1 more source

Petrology and P-T condition of white mica-chlorite schists from Vlasina series - Surdulica, SE Serbia [PDF]

Geološki Anali Balkanskoga Poluostrva, 2002
This paper reports structural, textural, petrological and metamorphic data from Vlasina Series of greenschists rocks (as part of the Upper Complex of the Serbo-Macedonian Massif) within which group of white mica-chlorite schist are extensively developed.
Vasković Nada J.
doaj   +1 more source