Navigation überspringen
Universitätsbibliothek Heidelberg
Status: Bibliographieeintrag

Verfügbarkeit
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Moulas, Evangelos [VerfasserIn]   i
 Kostopoulos, Dimitrios [VerfasserIn]   i
 Podladchikov, Yury [VerfasserIn]   i
 Chatzitheodoridis, Elias [VerfasserIn]   i
 Schenker, Filippo L. [VerfasserIn]   i
 Zingerman, Konstantin M. [VerfasserIn]   i
 Pomonis, Panagiotis [VerfasserIn]   i
 Tajcmanová, Lucie [VerfasserIn]   i
Titel:Calculating pressure with elastic geobarometry
Titelzusatz:a comparison of different elastic solutions with application to a calc-silicate gneiss from the Rhodope Metamorphic Province
Verf.angabe:Evangelos Moulas, Dimitrios Kostopoulos, Yury Podladchikov, Elias Chatzitheodoridis, Filippo L. Schenker, Konstantin M. Zingerman, Panagiotis Pomonis, Lucie Tajčmanová
E-Jahr:2020
Jahr:1 October 2020
Umfang:15 S.
Fussnoten:Gesehen am 03.03.2022
Titel Quelle:Enthalten in: Lithos
Ort Quelle:Amsterdam [u.a.] : Elsevier Science, 1968
Jahr Quelle:2020
Band/Heft Quelle:378/379(2020), 12, Artikel-ID 105803, Seite 1-15
ISSN Quelle:1872-6143
Abstract:Raman elastic geobarometry has increasingly been used complementary to metamorphic phase equilibria to estimate the conditions of recrystallization in metamorphic rocks. The procedure of applying Raman elastic barometry to host-inclusion mineral systems requires several steps that involve various assumptions. One of the most essential assumptions is that the mineral host-inclusion system behaves in an elastic and reversible manner. We discuss the discrepant results obtained by different authors employing different analytical solutions for elasticity and explore the assumptions lying behind each method. Furthermore, we evaluate numerically linear and non-linear elastic solutions and show their discrepancies. Both formulations are tested against recently published experiments on quartz inclusions in garnet (QuiG) at pressures up to 3 GPa, and we find a very good agreement between calculated and experimental pressure values (within 10% relative error). We subsequently apply our new elastic geobarometer to a calc-silicate gneiss from the Rhodope Metamorphic Province (N. Greece). The results of Raman elastic barometry combined with garnet-clinopyroxene geothermometry yield eclogite-facies conditions (~720 ± 40 °C, ~1.5 ± 0.2 GPa). These results are comparable to a high-temperature metamorphic overprint deduced from phase equilibria modeling in surrounding lithologies (730 ± 40 °C, ~1.2 ± 0.1 GPa). Our findings indicate that the estimated pressure from Raman elastic barometry is consistent with a significant viscous relaxation at high temperatures. We conclude that although Raman elastic barometry is a powerful tool for pressure estimation in metamorphic rocks, its pressure estimates do not necessarily correspond to entrapment conditions. Our results are consequential for the estimates of reaction overstepping in high-grade metamorphic rocks.
DOI:doi:10.1016/j.lithos.2020.105803
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1016/j.lithos.2020.105803
 Volltext: https://www.sciencedirect.com/science/article/pii/S0024493720304400
 DOI: https://doi.org/10.1016/j.lithos.2020.105803
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:Eclogite
 Elastic barometry
 Quartz-in-Garnet barometry (QuiG)
 Raman
 Rhodope Metamorphic Province
K10plus-PPN:1788648072
Verknüpfungen:→ Zeitschrift

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/68874680   QR-Code
zum Seitenanfang