Alternate Twin Deformation in Plagioclase: Possible Evidence of Shock Deformation in Charnockitic Rocks Associated with the Woodbury Structure
نویسندگان
چکیده
DEFORMATION IN CHARNOCKITIC ROCKS ASSOCIATED WITH THE WOODBURY STRUCTURE. E. F Albin1, R. S. Harris2,3, D. T. King, Jr.4, S. J. Jaret5, and R. E. Jarrett3, 1Dept. of Space Sciences, Fernbank Science Center, Atlanta, GA 30307 ([email protected]), 2Dept. of Geological Sciences, Brown University, Providence, RI 02912, 3Dept. of Geosciences, Georgia State University, Atlanta, GA 30302, 4Dept. of Geology and Geography, Auburn University, Auburn, AL 36849, 5Dept. of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37966.
منابع مشابه
کلریتزایی بیوتیت در گنبدهای داسیتی باغات (جنوب سیرجان)
The dacitic domes lie in the Sanandaj-Sirjan Zone. They were subjected to deformation resulting from tectonic movements. They are as oriented rocks which show deformation textures such as plagioclase with mechanical twin, biotite fish, and deformed clinopyroxene set in foliated groundmass. Under condition of hydrothermal alteration, biotites altered into chlorite with smectite interlayers and p...
متن کاملFractal analysis of quartz grain boundary in the gneissic granite of Abadchi, North of Shahrekord
The granitic gneisses of Abadchi village is located in the North of Zayandeh-Rud dam, where the area is a part of Sanandaj-Sirjan Zone. The mineralogical composition of the rocks is composed of quartz, plagioclase, K-feldspar, biotite, amphibole, muscovite, zircon, titanite and allanite. Quartz crystals, as the most abundant mineral constituents of these rocks, display the different conditions ...
متن کاملEvolution of recorded microstructures in minerals during cooling of Zarrin intrusion, evidence for dynamic deformation
The Zarrin granitoids is located in the west of Yazd block, Central Iran. Zarrin granitoids exhibit mylonitic rocks ranging from protomylonitic to mylontic. In Zarrin granitoids examples of sub-magmatic, microstructures are represented by chessboard patterns in quartz and sub-magmatic fractures in plagioclase, indicating deformation at high-temperature conditions (T > 650º C) and the presence o...
متن کاملشواهد سنگنگاری دگرشکلی دمای بالا در حاشیهی تودهی گرانیتوئیدی کیکی، ایران مرکزی
South Kiki granitoid intrusion is located north of Semnan Province, about 5 km south of the village of Kiki. This pluton emplaced wholly within the Jurassic sandstones with typical contact metamorphic aureole around their periphery. The plutonic rocks suffered high-temperature deformation with well-developed S-C fabrics along shear zones marginal to the intrusion. The pluton was subjected to...
متن کاملدگرریختی همزمان و پس از تبلور گرانیتوئید زهری بر پایهی شواهد بافتی در پایانههای پهنهی برشی نهبندان، خاور ایران
The Zahri granitoid body has intruded into the Late Cretaceous ophiolitic rocks syn-tectonically. This granitoid with NW–SE general trend was emplaced along the terminations of Nehbandan shear system in the northern Sistan suture zone during the Early Eocene. Development of magmatic to low temperature solid-state fabrics have shown the progressive deformation with decreasing melt content during...
متن کامل