Results 11 to 20 of about 3,336,558 (167)

Timing of late Palaeoproterozoic metamorphism in the northern Belomorian Belt, White Sea region: Conclusions from U-Pb isotopic data and P-T evidence [PDF]

Bulletin of the Geological Society of Finland, 2001
Brilliant-looking zircon crystals from a garnet-amphibolitic, metamorphosed mafic dyke at Lyagkomina in the Lake Kovdozero area, northern Belomorian Belt, most probably mark the 1875±4 Ma age of peak late Palaeoproterozoic regional metamorphism which ...
T. Skiöld, S. Bogdanova, R. Gorbatschev, E. Bibikova   +3 more
doaj   +1 more source

P–T conditions of metapelites from metamorphic complexes in Aysen, Chile

Journal of South American Earth Sciences, 2005
Pressure and temperature metamorphic conditions were determined for K-white mica and chlorite in metapelites from the eastern Andean metamorphic complex (EAMC) and from the Chonos metamorphic complex (CMC) of southern Chile. The Kubler index (KI) of K-white micas was measured on a
RAMIREZ SANCHEZ E., HERVE F., KELM U., SASSI, RAFFAELE   +3 more
openaire   +4 more sources

P-T conditions of Pan-African orogeny in southeastern Nigeria [PDF]

Central European Geology, 2008
Abstract Different rock types from the area northeast of Obudu, southeastern Nigeria were investigated in order to place constraints on their metamorphic conditions. Detailed petrographic studies indicate four main rock groups in the studied area, namely migmatitic gneiss, migmatitic schist, granite gneiss and a minor amount of amphibolite, metagabbro ...
Ephraim, Bassey E., Ekwueme, Barth N., Moazzen, Mohssen, Modjarrad, Monir   +3 more
openaire   +2 more sources

More On P-Union and P-Intersection of Neutrosophic Soft Cubic Set [PDF]

Neutrosophic Sets and Systems, 2017
The P-union ,P-intersection, P-OR and P-AND of neutrosophic soft cubic sets are introduced and their related properties are investigated. We show that the P-union and the P-intersection of two internal neutrosophic soft cubic sets are also internal ...
R. Anitha Cruz, F. Nirmala Irudayam
doaj   +1 more source

An Experimental and Numerical Study of CO₂–Brine-Synthetic Sandstone Interactions under High-Pressure (P)–Temperature (T) Reservoir Conditions

Applied Sciences, 2019
The interaction between CO2 and rock during the process of CO2 capture and storage was investigated via reactions of CO2, formation water, and synthetic sandstone cores in a stainless-steel reactor under high pressure and temperature. Numerical modelling
Zhichao Yu, Siyu Yang, Keyu Liu, Qingong Zhuo, Leilei Yang   +4 more
doaj   +1 more source

Multiplicity results for an impulsive boundary value problem of p(t)-Kirchhoff type via critical point theory [PDF]

Opuscula Mathematica, 2016
In this paper we obtain existence results of \(k\) distinct pairs nontrivial solutions for an impulsive boundary value problem of \(p(t)\)-Kirchhoff type under certain conditions on the parameter \(\lambda\).
A. Mokhtari, T. Moussaoui, D. O'Regan
doaj   +1 more source

Gemological and Chemical Characterization of Gem-Grade Peridot from Yiqisong, Jilin Province

Crystals
Peridot has a long history and is deeply loved by people for its unique olive-green color. The Yiqisong peridot deposit in Jilin Province is a newly discovered peridot deposit that still deserves systematic research.
Jina Li, Yi Zhao, Bo Xu
doaj   +1 more source

Global nonexistence of solutions for a quasilinear wave equation with acoustic boundary conditions

Boundary Value Problems, 2017
We consider the quasilinear wave equation u t t − △ u t − div ( | ∇ u | α − 2 ∇ u ) − div ( | ∇ u t | β − 2 ∇ u t ) + a | u t | m − 2 u t = b | u | p − 2 u $$u_{tt} -\triangle u_{t} -\operatorname{div}\bigl(\vert \nabla u\vert ^{\alpha-2} \nabla u\bigr) -
Jin-Mun Jeong, Jong-Yeoul Park, Yong Han Kang   +2 more
doaj   +1 more source

Oscillation in second order functional equations with deviating arguments

International Journal of Mathematics and Mathematical Sciences, 1981
For the pair of functional equations (A)(r(t)y′(t))+p(t)h(h(g(t)))=f(t) and (B)(r(t)y′(t))−p(t)h(y(g(t)))=0 sufficient conditions have been found to cause all solutions of equation (A) to be oscillatory.
Bhagat Singh
doaj   +1 more source

Variations in the P‐T‐t of Deformation in a Crustal‐Scale Shear Zone in Metagranite

Geochemistry, Geophysics, Geosystems, 2020
Deformation in crustal‐scale shear zones occurs over a range of pressure‐temperature‐time (P‐T‐t) conditions, both because they may be vertically extensive structures that simultaneously affect material from the lower crust to the surface, and because ...
T. K. Cawood, J. P. Platt
doaj   +1 more source