Quartz veins at the southern part of Adycha-Elgi anticlinorium and zone of Adycha-Taryn fault, Yakutia

Abstract

A comparative study of quartz veins occurring among upper Triassic terrigenous rocks in the southern part of Adycha-Elgi anticlinorium and the adjacent site of Adycha-Taryn fault zone. The characteristic of the enclosing clastic rocks, their postsedimentary changes, formation of cleavage in the rocks and processes of deformation of rock-forming quartz is entered. The fibrous, allotriomorphic and hypidiomorphic quartz, which are present in the veins, accompanied by the same others vein minerals having similar X-ray luminescence. The succession of the varieties of quartz connects with the changing of pattern opening of vein fractures. It is established that in the area of the Adycha-Taryn fault the terrigenous rocks were subjected to more intense metagenesis (anchimetamorphism) than in the adjacent part of the Adycha-Elgi anticlinorium. In this area quartz veins formation proceeded more intensively, more common the veins of fibrous quartz and less common the veins of hypidiomorphic quartz, vein quartz often contains fluid inclusions with elevated contents of carbon dioxide, and more strongly plastically deformed. From the obtained results, conclusions about the processes of formation of quartz veins and certain types of vein quartz, and the place of the selected types of quartz veins in the cycle of orogeny are done.

Keywords

• адыча-тарынский разлом
• метагенез
• кливаж
• кварцевые жилы
• жильный кварц
• пластическая деформация кварца
• рентгенолюминесценция кварца
• adycha-taryn fault
• metagenesis
• cleavage
• quartz veins
• vein quartz microstructures
• plastic deformation of quartz
• x-ray luminescence of quartz