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http://dx.doi.org/10.18419/opus-14206
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DC Element | Wert | Sprache |
---|---|---|
dc.contributor.author | Li, Botao | - |
dc.contributor.author | Massonne, Hans‐Joachim | - |
dc.contributor.author | Koller, Friedrich | - |
dc.contributor.author | Zhang, Junfeng | - |
dc.date.accessioned | 2024-04-12T11:21:18Z | - |
dc.date.available | 2024-04-12T11:21:18Z | - |
dc.date.issued | 2021 | de |
dc.identifier.issn | 1525-1314 | - |
dc.identifier.issn | 0263-4929 | - |
dc.identifier.other | 1886116210 | - |
dc.identifier.uri | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-142254 | de |
dc.identifier.uri | http://elib.uni-stuttgart.de/handle/11682/14225 | - |
dc.identifier.uri | http://dx.doi.org/10.18419/opus-14206 | - |
dc.description.abstract | The Austroalpine nappe stack of the Pohorje Mountains (Mts.) in northeastern Slovenia comprises a suite of eclogite facies metamorphic rocks that were partially assigned to Eo‐Alpine ultrahigh‐pressure metamorphism (UHPM). We selected a micaschist, which was previously related to this metamorphism, for a detailed study including the chemical zonation of garnet and potassic white mica, the identification of mineral inclusion assemblages, pseudosection modelling with PERPLE_X, and monazite in‐situ dating with the electron microprobe. Polymetamorphism was revealed by (at least) two generations of garnet and phengite and four populations of monazite yielding ages of 283.6 ± 6.1 (2σ), 94.1 ± 3.7, 47.9 ± 10.8 and 26.2 ± 2.8 Ma. The Permian monazite population is characterized by relatively high Y contents (~1.15 wt% Y) and low La/Gd mass ratios (8.7) indicating its formation before the growth of porphyroblastic garnet. The Eo‐Alpine population, however, grew synchronously with garnet based on low Y contents (~0.05 wt%) and high La/Gd ratios (21.4). The older Tertiary population (48 Ma) shows also high Y contents (1.1 wt%) and low La/Gd ratios (10.6) whereas the younger Tertiary population is characterized by low Y contents. The Permian P-T conditions of 7.5-10 kbar at 600-650°C were obtained using the inclusion assemblage of staurolite+rutile+biotite in porphyroblastic garnet. High pressure (HP) but no UHPM was reconstructed for both Eo‐Alpine coarse phengite (Si = 3.22 per formula unit = pfu) and small Tertiary garnet+fine‐grained phengite (Si = 3.27 pfu) at peak pressures ~16 kbar and 18.5-23 kbar respectively. Maximum temperatures close to 650°C were likely reached during the Eo‐Alpine HP event, whereas those of the Tertiary HP event were probably ~580°C. These HP metamorphic events suggest that the Pohorje Mts. experienced both an Eo‐Alpine and a Tertiary subduction-exhumation history, the latter of which was mainly reported for underlying Penninic nappes so far. | en |
dc.description.sponsorship | MOST Special Fund from the State Key Laboratory of GPMR and the 111 Project (BP0719022) | de |
dc.description.sponsorship | National Natural Science Foundation of China | de |
dc.description.sponsorship | Projekt DEAL | de |
dc.language.iso | en | de |
dc.relation.uri | doi:10.1111/jmg.12581 | de |
dc.rights | info:eu-repo/semantics/openAccess | de |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | de |
dc.subject.ddc | 540 | de |
dc.subject.ddc | 550 | de |
dc.title | Metapelite from the high‐ to ultrahigh‐pressure terrane of the Eastern Alps (Pohorje Mountains, Slovenia) : new pressure, temperature and time constraints on a polymetamorphic rock | en |
dc.type | article | de |
dc.date.updated | 2023-11-14T04:26:13Z | - |
ubs.fakultaet | Chemie | de |
ubs.fakultaet | Fakultätsübergreifend / Sonstige Einrichtung | de |
ubs.institut | Fakultät Chemie (Institutsübergreifend) | de |
ubs.institut | Fakultätsübergreifend / Sonstige Einrichtung | de |
ubs.publikation.seiten | 695-726 | de |
ubs.publikation.source | Journal of metamorphic geology 39 (2021), S. 695-726 | de |
ubs.publikation.typ | Zeitschriftenartikel | de |
Enthalten in den Sammlungen: | 03 Fakultät Chemie |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
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JMG_JMG12581.pdf | 6 MB | Adobe PDF | Öffnen/Anzeigen |
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