NDLI: An experiment study of quartz-coesite transition at differential stress

Content Provider	Springer Nature Link
Author	Zhou, Yongsheng He, Changrong Song, Juan Ma, Shengli Ma, Jin
Copyright Year	2005
Abstract	In order to study quartz-coesite transition under the conditions of differential stress, experiments of quartzite deformation were carried out using a triaxial testing system with a Griggs type solid medium pressure vessel. Analyses on the plastically-deformed samples under optical microscope and Raman spectra show that fine-grained coesite was present in the region of samples adjacent to the pistons at temperatures of 950–1000°C, confining pressure of 1.3 GPa, differential stress of 1.5–1.67 GPa, and total strain of 75%–81%. It is evident that the transition pressure of quartz-coesite at differential stress and intensely-strained conditions is far lower than the pressure for coesite stability at isostatic pressure. In other words, the stress condition of coesite occurrence is not unique. The decrease in confining pressure for quartz-coesite transition under differential stress conditions is controlled by a combined effect of the maximum principal stress that provides a high stress environment, and differential stress that causes sample deformation. Coesite was produced in the plastically-deformed samples in this study, but it can occur in both semi-brittle and plastic deformation regimes as seen in previous studies. Phase transition in semi-brittle deformation regime is caused by local mechanical instability induced by shear deformation, and phase transition in plastic flow regime is due to strain instability induced by the presence of a high dislocation density within intensely-deformed quartz crystals.
Starting Page	446
Ending Page	451
Page Count	6
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	50
Issue Number	5
e-ISSN	18619541
Language	English
Publisher	Science in China Press
Publisher Date	2005-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	quartz-coesite transition differential stress high temperature high pressure Life Sciences Physics Chemistry/Food Science Science Geosciences Engineering
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Study on the Phase Transition from Quartz to Coesite under High Temperature and High Pressure

Coesite eclogite facies metamorphic tectonite: Evidence for ultrahigh pressure deformation

The effect of phase transition on the compressional wave velocity for a trachybasalt at high temperature and high pressure

Specific conductivity of dilute hydrochloric acid solutions at high temperature and high pressure

Electrical conductivity measurement of serpentine at high temperature and pressure

Experimental study of the metamorphic reaction involving melt under high temperature and high pressure

Genesis of granulite in Himalayan lower crust: Evidence from experimental study at high temperature and high pressure

Progress in high pressure EDXD system and research at Beijing Synchrotron Radiation Facility

Orientational phase transition in C$_{60}$ single crystal under high pressure

An experiment study of quartz-coesite transition at differential stress

Similar Documents

Study on the Phase Transition from Quartz to Coesite under High Temperature and High Pressure

Coesite eclogite facies metamorphic tectonite: Evidence for ultrahigh pressure deformation

The effect of phase transition on the compressional wave velocity for a trachybasalt at high temperature and high pressure

Specific conductivity of dilute hydrochloric acid solutions at high temperature and high pressure

Electrical conductivity measurement of serpentine at high temperature and pressure

Experimental study of the metamorphic reaction involving melt under high temperature and high pressure

Genesis of granulite in Himalayan lower crust: Evidence from experimental study at high temperature and high pressure

Progress in high pressure EDXD system and research at Beijing Synchrotron Radiation Facility

Orientational phase transition in C$_{60}$ single crystal under high pressure

An experiment study of quartz-coesite transition at differential stress