The structural and thermal relaxation overprint associated with the Neogene Alboran rifting have obscured early Alpine tectono-metamorphic evolution of Domain, representing metamorphic core Betic–Rif orogen western Mediterranean region. This study focuses on Beni Mzala unit, forming lower deeper level nappe stack (Upper Sebtides) in Moroccan Rif. Meso- micro-scale investigations are carried out...

Study of the concentration and isotopic composition of strontium and rubidium in hornblende diorite dikes and sills of Precambrian age from the Panamint Mountains of California showed that these rock systems were enriched in radiogenic Sr during a late Mesozoic metamorphism. Enrichments in radiogenic Sr were observed for total-rock samples which yielded apparent ages of up to 34,000 m.y., altho...

nezam-abad area is located in southwest of shazand (arak) which is a part of sanandaj-sirjan zone. major intrusive rocks of nezam-abad are quartz diorite and minor amount of granodiorite. leucogranitic, pegmatite dykes and quartz-tourmaline veins were intruded the quartz diorite. quartz diorites are mainly composed of plagioclase, hornblende, biotite, quartz and pyroxene as major minerals. majo...

The North Tianshan Belt (NTB) formed by the subduction and accretion of Junggar Ocean is a key area for reconstructing Paleozoic tectonic evolution southern Central Asian Orogenic (CAOB). Despite numerous studies, interpretation late NTB meets no consensus yet. We conducted field investigations LA-ICP-MS zircon U-Pb dating on metamorphic rocks from Julideneng Metamorphic Complex (JMC) in Harlik...

To material scientists the term texture means the crystallographic orientation of grains in a polycrystal. In contrast, geologists use the term more generally to refer to the spatial arrangement or association of mineral grains in a rock. In this contribution we are concerned with the materials science definition. There are several established techniques available for the determination of cryst...

The Borujerd complex of western Iran is composed of intrusions and their surrounding contact aureole, with, pegmatites and quartz veins. Pegmatites differ in mineralogy, origin and age, and two groups can be distinguished. The Older Pegmatites (about 120 Ma age) intruded contact metamorphic rocks from the early magmatic stage, while the Younger pegmatites (52-70 Ma age) formed during the late m...