Structural disorder of graphite and implications for graphite thermometry
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Autoren
- Martina Kirilova
- Virginia Toy
- Jeremy S Rooney
- Carolina Giorgetti
- Keith C Gordon
- Cristiano Collettini
- Toru Takeshita
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000426243700001&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.5194/se-9-223-2018
- eISSN
- 1869-9529
- Externe Identifier
- Clarivate Analytics Document Solution ID: FX7CI
- ISSN
- 1869-9510
- Ausgabe der Veröffentlichung
- 1
- Zeitschrift
- SOLID EARTH
- Paginierung
- 223 - 231
- Datum der Veröffentlichung
- 2018
- Status
- Published
- Titel
- Structural disorder of graphite and implications for graphite thermometry
- Sub types
- Article
- Ausgabe der Zeitschrift
- 9
Datenquelle: Web of Science (Lite)
- Andere Metadatenquellen:
-
- Abstract
- <jats:p>Abstract. Graphitization, or the progressive maturation of carbonaceous material, is considered an irreversible process. Thus, the degree of graphite crystallinity, or its structural order, has been calibrated as an indicator of the peak metamorphic temperatures experienced by the host rocks. However, discrepancies between temperatures indicated by graphite crystallinity versus other thermometers have been documented in deformed rocks. To examine the possibility of mechanical modifications of graphite structure and the potential impacts on graphite thermometry, we performed laboratory deformation experiments. We sheared highly crystalline graphite powder at normal stresses of 5 and 25 megapascal (MPa) and aseismic velocities of 1, 10 and 100 µm s−1. The degree of structural order both in the starting and resulting materials was analyzed by Raman microspectroscopy. Our results demonstrate structural disorder of graphite, manifested as changes in the Raman spectra. Microstructural observations show that brittle processes caused the documented mechanical modifications of the aggregate graphite crystallinity. We conclude that the calibrated graphite thermometer is ambiguous in active tectonic settings. </jats:p>
- Autoren
- Martina Kirilova
- Virginia Toy
- Jeremy S Rooney
- Carolina Giorgetti
- Keith C Gordon
- Cristiano Collettini
- Toru Takeshita
- DOI
- 10.5194/se-9-223-2018
- eISSN
- 1869-9529
- Ausgabe der Veröffentlichung
- 1
- Zeitschrift
- Solid Earth
- Sprache
- en
- Online publication date
- 2018
- Paginierung
- 223 - 231
- Status
- Published online
- Herausgeber
- Copernicus GmbH
- Herausgeber URL
- http://dx.doi.org/10.5194/se-9-223-2018
- Datum der Datenerfassung
- 2020
- Titel
- Structural disorder of graphite and implications for graphite thermometry
- Ausgabe der Zeitschrift
- 9
Datenquelle: Crossref
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