Zagros blueschists: Episodic underplating and long-lived cooling of a subduction zone
Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros sutur...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Angiboust, Samuel [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016transfer abstract |
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| Schlagwörter: |
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| Umfang: |
11 |
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| Übergeordnetes Werk: |
Enthalten in: Energy consumption and environmental degradation nexus: A systematic review and meta-analysis of fossil fuel and renewable energy consumption - Kılıç Depren, Serpil ELSEVIER, 2022, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:443 ; year:2016 ; day:1 ; month:06 ; pages:48-58 ; extent:11 |
| Links: |
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| DOI / URN: |
10.1016/j.epsl.2016.03.017 |
|---|
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ELV019794142 |
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| 520 | |a Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. | ||
| 520 | |a Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. | ||
| 650 | 7 | |a accretion |2 Elsevier | |
| 650 | 7 | |a underplating |2 Elsevier | |
| 650 | 7 | |a subduction interface |2 Elsevier | |
| 650 | 7 | |a blueschists |2 Elsevier | |
| 650 | 7 | |a PT estimates |2 Elsevier | |
| 700 | 1 | |a Agard, Philippe |4 oth | |
| 700 | 1 | |a Glodny, Johannes |4 oth | |
| 700 | 1 | |a Omrani, Jafar |4 oth | |
| 700 | 1 | |a Oncken, Onno |4 oth | |
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10.1016/j.epsl.2016.03.017 doi GBVA2016021000010.pica (DE-627)ELV019794142 (ELSEVIER)S0012-821X(16)30104-2 DE-627 ger DE-627 rakwb eng 550 550 DE-600 610 333.7 VZ BIODIV DE-30 fid 42.90 bkl 42.11 bkl Angiboust, Samuel verfasserin aut Zagros blueschists: Episodic underplating and long-lived cooling of a subduction zone 2016transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. accretion Elsevier underplating Elsevier subduction interface Elsevier blueschists Elsevier PT estimates Elsevier Agard, Philippe oth Glodny, Johannes oth Omrani, Jafar oth Oncken, Onno oth Enthalten in Elsevier Kılıç Depren, Serpil ELSEVIER Energy consumption and environmental degradation nexus: A systematic review and meta-analysis of fossil fuel and renewable energy consumption 2022 Amsterdam [u.a.] (DE-627)ELV008390509 volume:443 year:2016 day:1 month:06 pages:48-58 extent:11 https://doi.org/10.1016/j.epsl.2016.03.017 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.90 Ökologie: Allgemeines VZ 42.11 Biomathematik Biokybernetik VZ AR 443 2016 1 0601 48-58 11 045F 550 |
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10.1016/j.epsl.2016.03.017 doi GBVA2016021000010.pica (DE-627)ELV019794142 (ELSEVIER)S0012-821X(16)30104-2 DE-627 ger DE-627 rakwb eng 550 550 DE-600 610 333.7 VZ BIODIV DE-30 fid 42.90 bkl 42.11 bkl Angiboust, Samuel verfasserin aut Zagros blueschists: Episodic underplating and long-lived cooling of a subduction zone 2016transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. accretion Elsevier underplating Elsevier subduction interface Elsevier blueschists Elsevier PT estimates Elsevier Agard, Philippe oth Glodny, Johannes oth Omrani, Jafar oth Oncken, Onno oth Enthalten in Elsevier Kılıç Depren, Serpil ELSEVIER Energy consumption and environmental degradation nexus: A systematic review and meta-analysis of fossil fuel and renewable energy consumption 2022 Amsterdam [u.a.] (DE-627)ELV008390509 volume:443 year:2016 day:1 month:06 pages:48-58 extent:11 https://doi.org/10.1016/j.epsl.2016.03.017 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.90 Ökologie: Allgemeines VZ 42.11 Biomathematik Biokybernetik VZ AR 443 2016 1 0601 48-58 11 045F 550 |
| allfields_unstemmed |
10.1016/j.epsl.2016.03.017 doi GBVA2016021000010.pica (DE-627)ELV019794142 (ELSEVIER)S0012-821X(16)30104-2 DE-627 ger DE-627 rakwb eng 550 550 DE-600 610 333.7 VZ BIODIV DE-30 fid 42.90 bkl 42.11 bkl Angiboust, Samuel verfasserin aut Zagros blueschists: Episodic underplating and long-lived cooling of a subduction zone 2016transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. accretion Elsevier underplating Elsevier subduction interface Elsevier blueschists Elsevier PT estimates Elsevier Agard, Philippe oth Glodny, Johannes oth Omrani, Jafar oth Oncken, Onno oth Enthalten in Elsevier Kılıç Depren, Serpil ELSEVIER Energy consumption and environmental degradation nexus: A systematic review and meta-analysis of fossil fuel and renewable energy consumption 2022 Amsterdam [u.a.] (DE-627)ELV008390509 volume:443 year:2016 day:1 month:06 pages:48-58 extent:11 https://doi.org/10.1016/j.epsl.2016.03.017 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.90 Ökologie: Allgemeines VZ 42.11 Biomathematik Biokybernetik VZ AR 443 2016 1 0601 48-58 11 045F 550 |
| allfieldsGer |
10.1016/j.epsl.2016.03.017 doi GBVA2016021000010.pica (DE-627)ELV019794142 (ELSEVIER)S0012-821X(16)30104-2 DE-627 ger DE-627 rakwb eng 550 550 DE-600 610 333.7 VZ BIODIV DE-30 fid 42.90 bkl 42.11 bkl Angiboust, Samuel verfasserin aut Zagros blueschists: Episodic underplating and long-lived cooling of a subduction zone 2016transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. accretion Elsevier underplating Elsevier subduction interface Elsevier blueschists Elsevier PT estimates Elsevier Agard, Philippe oth Glodny, Johannes oth Omrani, Jafar oth Oncken, Onno oth Enthalten in Elsevier Kılıç Depren, Serpil ELSEVIER Energy consumption and environmental degradation nexus: A systematic review and meta-analysis of fossil fuel and renewable energy consumption 2022 Amsterdam [u.a.] (DE-627)ELV008390509 volume:443 year:2016 day:1 month:06 pages:48-58 extent:11 https://doi.org/10.1016/j.epsl.2016.03.017 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.90 Ökologie: Allgemeines VZ 42.11 Biomathematik Biokybernetik VZ AR 443 2016 1 0601 48-58 11 045F 550 |
| allfieldsSound |
10.1016/j.epsl.2016.03.017 doi GBVA2016021000010.pica (DE-627)ELV019794142 (ELSEVIER)S0012-821X(16)30104-2 DE-627 ger DE-627 rakwb eng 550 550 DE-600 610 333.7 VZ BIODIV DE-30 fid 42.90 bkl 42.11 bkl Angiboust, Samuel verfasserin aut Zagros blueschists: Episodic underplating and long-lived cooling of a subduction zone 2016transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. accretion Elsevier underplating Elsevier subduction interface Elsevier blueschists Elsevier PT estimates Elsevier Agard, Philippe oth Glodny, Johannes oth Omrani, Jafar oth Oncken, Onno oth Enthalten in Elsevier Kılıç Depren, Serpil ELSEVIER Energy consumption and environmental degradation nexus: A systematic review and meta-analysis of fossil fuel and renewable energy consumption 2022 Amsterdam [u.a.] (DE-627)ELV008390509 volume:443 year:2016 day:1 month:06 pages:48-58 extent:11 https://doi.org/10.1016/j.epsl.2016.03.017 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.90 Ökologie: Allgemeines VZ 42.11 Biomathematik Biokybernetik VZ AR 443 2016 1 0601 48-58 11 045F 550 |
| language |
English |
| source |
Enthalten in Energy consumption and environmental degradation nexus: A systematic review and meta-analysis of fossil fuel and renewable energy consumption Amsterdam [u.a.] volume:443 year:2016 day:1 month:06 pages:48-58 extent:11 |
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zagros blueschists: episodic underplating and long-lived cooling of a subduction zone |
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Zagros blueschists: Episodic underplating and long-lived cooling of a subduction zone |
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Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. |
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Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. |
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Pressure–temperature–time ( P – T – t ) trajectories of high-pressure rocks provide important constraints to understand the tectonic evolution of convergent margins. New field observations and P – T – t constraints for the evolution of the only known blueschist-facies exposure along the Zagros suture zone in Southern Iran are reported here. These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient. |
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These blueschists, now exposed in tectonic windows under the Sanandaj–Sirjan zone (upper plate), constitute accreted fragments of the Tethyan domain during N-directed Cretaceous subduction. Three units were identified in the field: from top to bottom, the Ashin unit (mafic and felsic gneisses), the Seghin complex (mafic tuffs and ultramafics) and the Siah Kuh massif (coherent volcanic edifice). Microstructural observations, P – T estimates and Rb–Sr deformation ages indicate that the Ashin unit possibly underwent burial down to 30–35 km and 550 °C along a relatively warm P – T gradient (c. 17°/km) and was ultimately deformed between 85 and 100 Ma. The Seghin complex exhibits remarkably well-preserved HP–LT assemblages comprising lawsonite, glaucophane, aragonite, omphacite and garnet. P – T – t reconstruction indicates that this slice was subducted down to c. 50 km at temperatures of c. 500 °C along a very cold subduction gradient (c. 7°/km). Deformation in the Seghin complex stopped at around 65 Ma, close to peak metamorphic conditions. Field relationships and estimates of the P – T trajectory followed by the Siah Kuh volcanic edifice indicate that this massif was lately subducted down to 15 km depth along the same very cold gradient.</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">accretion</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">underplating</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">subduction interface</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">blueschists</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">PT estimates</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Agard, Philippe</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Glodny, Johannes</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Omrani, Jafar</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Oncken, Onno</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="n">Elsevier</subfield><subfield code="a">Kılıç Depren, Serpil ELSEVIER</subfield><subfield code="t">Energy consumption and environmental degradation nexus: A systematic review and meta-analysis of fossil fuel and renewable energy consumption</subfield><subfield code="d">2022</subfield><subfield code="g">Amsterdam [u.a.]</subfield><subfield code="w">(DE-627)ELV008390509</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:443</subfield><subfield code="g">year:2016</subfield><subfield code="g">day:1</subfield><subfield code="g">month:06</subfield><subfield code="g">pages:48-58</subfield><subfield code="g">extent:11</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1016/j.epsl.2016.03.017</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">FID-BIODIV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">42.90</subfield><subfield code="j">Ökologie: Allgemeines</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">42.11</subfield><subfield code="j">Biomathematik</subfield><subfield code="j">Biokybernetik</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">443</subfield><subfield code="j">2016</subfield><subfield code="b">1</subfield><subfield code="c">0601</subfield><subfield code="h">48-58</subfield><subfield code="g">11</subfield></datafield><datafield tag="953" ind1=" " ind2=" "><subfield code="2">045F</subfield><subfield code="a">550</subfield></datafield></record></collection>
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