In this paper, characterizations of the degree to which a mapping $mathcal{T} : L^{X}longrightarrow M$ is an $(L, M)$-fuzzy topology are studied in detail.What is more, the degree to which an $L$-subset is an $L$-open set with respect to $mathcal{T}$ is introduced.Based on that, the degrees to which a mapping $f: Xlongrightarrow Y$ is continuous,open, closed or a quotient mapping with respect t...

In the Cheshmeh-Bid district of Khajeh-Jamali ophiolitic massifs (Southern Iran), mantle peridotites are intruded by abundant pyroxenite dykes. A few these dykes remarkable for occurrence native copper associated with development a metasomatic reaction zone. The progressively reacted, from their margins towards center, an amphibole + antigorite selvage, followed centimeter-thick clinopyroxene a...

Fluid-rock interaction in ultramafic rocks considerably affects the chemical and isotopic composition of oceanic lithosphere. We present a geochemical petrological study serpentinites ophicalcites Northern Apennine ophiolite, Italy. This ophiolite sequence represents fragments Jurassic lithosphere that have been denuded by low angle detachment faults, exposing peridotites on ocean floor trigger...