Results 21 to 30 of about 2,429,367 (395)

Study of mineral chemistry, thermobarometry and petrogenesis of migmatitic rocks of Hamedan area [PDF]

پترولوژی, 2018
In the Hamedan region, migmatitic rocks occur with various structures. In the Simin area (South Hamedan) stromatic and in the Darreh-Omar (Toyserkan) area ophtalmitic structures are abundant.
Ali Asghar Sepahi Gerow, Seyedeh Razieh Jafari, Mohssen Moazzen, Hossein Shahbazi   +3 more
doaj   +1 more source

A Highly Depleted and Subduction‐Modified Mantle Beneath the Slow‐Spreading Mohns Ridge

Geochemistry, Geophysics, Geosystems, 2022
The Mohns Ridge is a very slow‐spreading ridge that, together with the Knipovich Ridge, marks the boundary between the North American and Eurasian plates in the Norwegian‐Greenland Sea.
A. Bjerga, H. H. Stubseid, L. E. R. Pedersen, A. Beinlich, R. B. Pedersen   +4 more
doaj   +1 more source

Critical Melting-Freezing Pretreatment Enhances Enzymatic Hydrolysis for Porous Starch Preparation: Role of Partial Structural Weakening and Surface Modification. [PDF]

Foods
Zhang C, Wu CY, Qian SQ, Zhang YY, Liu YL, Li XY, Wang SY, Qian JY.   +7 more
europepmc   +3 more sources

Machine learning with systematic density-functional theory calculations: Application to melting temperatures of single and binary component solids [PDF]

, 2014
A combination of systematic density functional theory (DFT) calculations and machine learning techniques has a wide range of potential applications.
Maekawa, Tomoya, Seko, Atsuto, Tanaka, Isao, Tsuda, Koji   +3 more
core   +2 more sources

Does Underthrusting Crust Feed Magmatic Flare‐Ups in Continental Arcs?

Geochemistry, Geophysics, Geosystems, 2020
Episodic magmatic flare‐ups are documented in many continental arcs worldwide. Yet, the causes of such episodicity and the sources feeding the flare‐ups are not well‐understood.
Jiaming Yang, Wenrong Cao, Stacia M. Gordon, Xu Chu   +3 more
doaj   +1 more source

Impact-induced changes in source depth and volume of magmatism on Mercury and their observational signatures

Nature Communications, 2017
Mantle partial melting produced the volcanic crust of Mercury. Here, the authors numerically model the formation of post-impact melt sheets and find that mantle convection was weak at around 3.7–3.8 Ga and that the melt sheets of Caloris and Rembrandt ...
Sebastiano Padovan, Nicola Tosi, Ana-Catalina Plesa, Thomas Ruedas   +3 more
doaj   +1 more source

Evaluation of the contributions of possible sources to the leucosome of the diatexite of Socorro-Guaxupé Nappe, in the Alfenas Region, MG, Brazil

Brazilian Journal of Geology, 2019
The Socorro-Guaxupé Nappe crops out in southern Minas Gerais and it has an intermediate unit called Metaxite Unit, dominated by diatexites at its base, with large volumes of leucosome and schollen of stromatic garnet-biotite metatexite.
Lizeth Hernandez Tasco, Renato Moraes
doaj   +1 more source

Sr-Nd-Hf Isotopic Disequilibrium During the Partial Melting of Metasediments: Insight From Himalayan Leucosome

Frontiers in Earth Science, 2022
Radiogenic isotopes of granitoids are widely applied to fingerprint the source of granitoids and study the magma mingling and assimilation processes, aiming to decipher the planetary differentiation.
Lei Yang, Lei Yang, Lei Yang, Jia-Min Wang, Xiao-Chi Liu, Gautam P. Khanal, Gautam P. Khanal, Fu-Yuan Wu, Fu-Yuan Wu   +8 more
doaj   +1 more source

Geochemistry and petrogenesis of Ghezelhesar Quaternary alkali olivine basalt flows (NE Hamedan, Iran) [PDF]

پترولوژی, 2021
The Ghezelhesar alkali olivine basalt flows as dark horizontal flows with about 20 m thickness covered the Quaternary deposits, 2 km southwest of Ghezelhesar village, 60 km northeast of Hamedan and in the Sanandaj-Sirjan geological and tectonic zone. The
Fatemeh Salar Beyrami;, Hossein Shahbazi, Maryam Ghobadnam;   +2 more
doaj   +1 more source

Phlogopite-Olivine Nephelinites Erupted During Early Stage Rifting, North Tanzanian Divergence

Frontiers in Earth Science, 2020
The North Tanzanian Divergence (NTD, eastern branch of the East African Rift) corresponds to an early stage of continental breakup. In the southern NTD, two quaternary volcanoes of the Manyara-Balangida rift (Labait, Kwaraha) have erupted primary ...
Céline Baudouin, Fleurice Parat
doaj   +1 more source