Effects of heterogeneous hydration in the incoming plate, slab rehydration, and mantle wedge hydration on slab-derived H2O flux in subduction zones
We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydrati...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Wada, Ikuko [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2012transfer abstract |
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| Schlagwörter: |
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| Umfang: |
12 |
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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:353 ; year:2012 ; day:1 ; month:11 ; pages:60-71 ; extent:12 |
| Links: |
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| DOI / URN: |
10.1016/j.epsl.2012.07.025 |
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| Katalog-ID: |
ELV026784548 |
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| 245 | 1 | 0 | |a Effects of heterogeneous hydration in the incoming plate, slab rehydration, and mantle wedge hydration on slab-derived H2O flux in subduction zones |
| 264 | 1 | |c 2012transfer abstract | |
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| 520 | |a We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. | ||
| 520 | |a We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. | ||
| 650 | 7 | |a slab dehydration |2 Elsevier | |
| 650 | 7 | |a slab rehydration |2 Elsevier | |
| 650 | 7 | |a mantle wedge hydration |2 Elsevier | |
| 650 | 7 | |a subduction zones |2 Elsevier | |
| 650 | 7 | |a H2O flux |2 Elsevier | |
| 650 | 7 | |a localized hydration |2 Elsevier | |
| 700 | 1 | |a Behn, Mark D. |4 oth | |
| 700 | 1 | |a Shaw, Alison M. |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a Kılıç Depren, Serpil ELSEVIER |t Energy consumption and environmental degradation nexus: A systematic review and meta-analysis of fossil fuel and renewable energy consumption |d 2022 |g Amsterdam [u.a.] |w (DE-627)ELV008390509 |
| 773 | 1 | 8 | |g volume:353 |g year:2012 |g day:1 |g month:11 |g pages:60-71 |g extent:12 |
| 856 | 4 | 0 | |u https://doi.org/10.1016/j.epsl.2012.07.025 |3 Volltext |
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2012 |
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10.1016/j.epsl.2012.07.025 doi GBV00000000000081A.pica (DE-627)ELV026784548 (ELSEVIER)S0012-821X(12)00392-5 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 Wada, Ikuko verfasserin aut Effects of heterogeneous hydration in the incoming plate, slab rehydration, and mantle wedge hydration on slab-derived H2O flux in subduction zones 2012transfer abstract 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. slab dehydration Elsevier slab rehydration Elsevier mantle wedge hydration Elsevier subduction zones Elsevier H2O flux Elsevier localized hydration Elsevier Behn, Mark D. oth Shaw, Alison M. 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:353 year:2012 day:1 month:11 pages:60-71 extent:12 https://doi.org/10.1016/j.epsl.2012.07.025 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.90 Ökologie: Allgemeines VZ 42.11 Biomathematik Biokybernetik VZ AR 353 2012 1 1101 60-71 12 045F 550 |
| spelling |
10.1016/j.epsl.2012.07.025 doi GBV00000000000081A.pica (DE-627)ELV026784548 (ELSEVIER)S0012-821X(12)00392-5 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 Wada, Ikuko verfasserin aut Effects of heterogeneous hydration in the incoming plate, slab rehydration, and mantle wedge hydration on slab-derived H2O flux in subduction zones 2012transfer abstract 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. slab dehydration Elsevier slab rehydration Elsevier mantle wedge hydration Elsevier subduction zones Elsevier H2O flux Elsevier localized hydration Elsevier Behn, Mark D. oth Shaw, Alison M. 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:353 year:2012 day:1 month:11 pages:60-71 extent:12 https://doi.org/10.1016/j.epsl.2012.07.025 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.90 Ökologie: Allgemeines VZ 42.11 Biomathematik Biokybernetik VZ AR 353 2012 1 1101 60-71 12 045F 550 |
| allfields_unstemmed |
10.1016/j.epsl.2012.07.025 doi GBV00000000000081A.pica (DE-627)ELV026784548 (ELSEVIER)S0012-821X(12)00392-5 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 Wada, Ikuko verfasserin aut Effects of heterogeneous hydration in the incoming plate, slab rehydration, and mantle wedge hydration on slab-derived H2O flux in subduction zones 2012transfer abstract 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. slab dehydration Elsevier slab rehydration Elsevier mantle wedge hydration Elsevier subduction zones Elsevier H2O flux Elsevier localized hydration Elsevier Behn, Mark D. oth Shaw, Alison M. 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:353 year:2012 day:1 month:11 pages:60-71 extent:12 https://doi.org/10.1016/j.epsl.2012.07.025 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.90 Ökologie: Allgemeines VZ 42.11 Biomathematik Biokybernetik VZ AR 353 2012 1 1101 60-71 12 045F 550 |
| allfieldsGer |
10.1016/j.epsl.2012.07.025 doi GBV00000000000081A.pica (DE-627)ELV026784548 (ELSEVIER)S0012-821X(12)00392-5 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 Wada, Ikuko verfasserin aut Effects of heterogeneous hydration in the incoming plate, slab rehydration, and mantle wedge hydration on slab-derived H2O flux in subduction zones 2012transfer abstract 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. slab dehydration Elsevier slab rehydration Elsevier mantle wedge hydration Elsevier subduction zones Elsevier H2O flux Elsevier localized hydration Elsevier Behn, Mark D. oth Shaw, Alison M. 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:353 year:2012 day:1 month:11 pages:60-71 extent:12 https://doi.org/10.1016/j.epsl.2012.07.025 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.90 Ökologie: Allgemeines VZ 42.11 Biomathematik Biokybernetik VZ AR 353 2012 1 1101 60-71 12 045F 550 |
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10.1016/j.epsl.2012.07.025 doi GBV00000000000081A.pica (DE-627)ELV026784548 (ELSEVIER)S0012-821X(12)00392-5 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 Wada, Ikuko verfasserin aut Effects of heterogeneous hydration in the incoming plate, slab rehydration, and mantle wedge hydration on slab-derived H2O flux in subduction zones 2012transfer abstract 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. slab dehydration Elsevier slab rehydration Elsevier mantle wedge hydration Elsevier subduction zones Elsevier H2O flux Elsevier localized hydration Elsevier Behn, Mark D. oth Shaw, Alison M. 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:353 year:2012 day:1 month:11 pages:60-71 extent:12 https://doi.org/10.1016/j.epsl.2012.07.025 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.90 Ökologie: Allgemeines VZ 42.11 Biomathematik Biokybernetik VZ AR 353 2012 1 1101 60-71 12 045F 550 |
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effects of heterogeneous hydration in the incoming plate, slab rehydration, and mantle wedge hydration on slab-derived h2o flux in subduction zones |
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Effects of heterogeneous hydration in the incoming plate, slab rehydration, and mantle wedge hydration on slab-derived H2O flux in subduction zones |
| abstract |
We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. |
| abstractGer |
We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. |
| abstract_unstemmed |
We quantify the effects of heterogeneous hydration in the incoming oceanic plate, rehydration in the subducting slab, and hydration in the lowermost mantle wedge on the pattern of H2O release from the slab in the forearc and arc regions of subduction zones. The release and uptake of H2O by dehydration and hydration reactions, respectively, are calculated using a subduction zone thermal model and thermodynamic calculations for the distribution of mineralogically bound H2O for idealized lithologies. We consider two end-member models for the initial hydration state of the incoming plate: (1) uniform hydration, in which H2O is stored homogeneously within each lithologic unit, and (2) localized hydration, in which H2O is stored at its saturation level in discrete zones. The former is commonly assumed in thermo-petrologic models, while the latter approximates the effect of localized hydration along faults in the oceanic plate inferred from geophysical observations. Our modeling results show that for the same bulk H2O content, localized hydration results in shallower H2O release compared to uniform hydration, and that the H2O flux off the subducting slab beneath the forearc and arc regions can be almost twice as large from a locally hydrated slab as from a uniformly hydrated slab. Rehydration can occur in the subducting slab and delays the liberation of H2O. The effect of pervasive rehydration in the slab on the pattern of fluid release in the forearc and arc regions is relatively small if the slab is uniformly hydrated, but it is large if the slab is locally hydrated. Hydration of the overlying mantle also delays the liberation of H2O, but the volume of H2O absorbed in the mantle is small compared to that released from the subducting slab, thereby implying that mantle wedge hydration has only a modest effect on the pattern of fluid release. |
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| title_short |
Effects of heterogeneous hydration in the incoming plate, slab rehydration, and mantle wedge hydration on slab-derived H2O flux in subduction zones |
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Behn, Mark D. Shaw, Alison M. |
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