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Primary melt inclusions in andalusite from anatectic graphitic metapelites: Implications for the position of the Al2SiO5 triple point

2003; Geological Society of America; Volume: 31; Issue: 7 Linguagem: Inglês

10.1130/0091-7613(2003)031 2.0.co;2

1943-2682

Bernardo Cesare, Claudio Marchesi, Jörg Hermann, María Teresa Gómez‐Pugnaire,

High-pressure geophysics and materials

Research Article| July 01, 2003 Primary melt inclusions in andalusite from anatectic graphitic metapelites: Implications for the position of the Al2SiO5 triple point B. Cesare; B. Cesare 1Dipartimento di Mineralogia e Petrologia, Università di Padova, Consiglio Nazionale delle Ricerche, Istituto di Geoscienze e Georisorse, Corso Garibaldi, 37, 35137 Padova, Italy Search for other works by this author on: GSW Google Scholar C. Marchesi; C. Marchesi 2Dipartimento di Mineralogia e Petrologia, Università di Padova, Corso Garibaldi, 37, 35137 Padova, Italy, and Departamento de Mineralogía y Petrología, Facultad de Ciencias, Universidad de Granada, Fuentenueva s/n, 18002 Granada, Spain Search for other works by this author on: GSW Google Scholar J. Hermann; J. Hermann 3Research School of Earth Sciences, Australian National University, Canberra ACT 0200, Australia Search for other works by this author on: GSW Google Scholar M.T. Gómez-Pugnaire M.T. Gómez-Pugnaire 4Departamento de Mineralogía y Petrología, Facultad de Ciencias, Universidad de Granada, Fuentenueva s/n, 18002 Granada, Spain Search for other works by this author on: GSW Google Scholar Author and Article Information B. Cesare 1Dipartimento di Mineralogia e Petrologia, Università di Padova, Consiglio Nazionale delle Ricerche, Istituto di Geoscienze e Georisorse, Corso Garibaldi, 37, 35137 Padova, Italy C. Marchesi 2Dipartimento di Mineralogia e Petrologia, Università di Padova, Corso Garibaldi, 37, 35137 Padova, Italy, and Departamento de Mineralogía y Petrología, Facultad de Ciencias, Universidad de Granada, Fuentenueva s/n, 18002 Granada, Spain J. Hermann 3Research School of Earth Sciences, Australian National University, Canberra ACT 0200, Australia M.T. Gómez-Pugnaire 4Departamento de Mineralogía y Petrología, Facultad de Ciencias, Universidad de Granada, Fuentenueva s/n, 18002 Granada, Spain Publisher: Geological Society of America Received: 03 Dec 2002 Revision Received: 03 Apr 2003 Accepted: 07 Apr 2003 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2003) 31 (7): 573–576. https://doi.org/10.1130/0091-7613(2003)031 2.0.CO;2 Article history Received: 03 Dec 2002 Revision Received: 03 Apr 2003 Accepted: 07 Apr 2003 First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation B. Cesare, C. Marchesi, J. Hermann, M.T. Gómez-Pugnaire; Primary melt inclusions in andalusite from anatectic graphitic metapelites: Implications for the position of the Al2SiO5 triple point. Geology 2003;; 31 (7): 573–576. doi: https://doi.org/10.1130/0091-7613(2003)031 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Anatectic crustal xenoliths in the Miocene volcanic rocks of Mazarrón (southeast Spain) contain andalusite with melt inclusions, an unprecedented finding. Microstructures indicate that the melt inclusions were trapped during andalusite growth. The volatile content of the peraluminous inclusions is too low (Cl < 0.4 wt%, F < 0.3 wt%, P ≈ 1500 ppm, B < 850 ppm) to have caused a significant reduction of the wet solidus temperature. Moreover, the presence of graphite, as observed, during partial melting is expected to have raised the temperature of the wet solidus. Melting temperatures for the inclusions—obtained from quartz-albite-orthoclase haplogranite system (680–790 °C), Zr (620–705 °C), and light rare earth element (615–725 °C) thermometry—indicate that the stability of andalusite + melt is incompatible with the position of the most commonly used andalusite = sillimanite equilibrium, and that the Al2SiO5 triple point must be placed at higher temperatures and pressures. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.