episodic onset of explosive and silicic-dominated volcanism in a continental rift; insights from the Permian Oslo Rift, Norway
The nature of rifting episodes and their associated volcanism mark key stratigraphic events in the evolution of volcano-sedimentary basins. Following the final assemblage of Pangea, the European region was subject to rifting and magmatism during crustal re-equilibration throughout the Permian. The a...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Volcanica
2024-12-01
|
| Series: | Volcanica |
| Subjects: | |
| Online Access: | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/281 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846126184255979520 |
|---|---|
| author | Jack Whattam Ivar Midtkandal Dougal Jerram Sara Callegaro Henrik Svensen |
| author_facet | Jack Whattam Ivar Midtkandal Dougal Jerram Sara Callegaro Henrik Svensen |
| author_sort | Jack Whattam |
| collection | DOAJ |
| description | The nature of rifting episodes and their associated volcanism mark key stratigraphic events in the evolution of volcano-sedimentary basins. Following the final assemblage of Pangea, the European region was subject to rifting and magmatism during crustal re-equilibration throughout the Permian. The aborted, partially eroded Oslo Rift is an excellent archive of this Permian magmatism, but the late-stage volcanological evolution is poorly understood. We present the first detailed documentation of a succession covering this period, with mafic lavas and volcaniclastic (tuff breccia) deposits, trachy-andesitic tuffs, and rheomorphic to moderately welded ignimbrites. Contrary to previous ideas, we show evidence suggesting the development of Strombolian-type scoria-cones, silicic fissure-fed eruptions, and major periods of rift-wide volcanic quiescence. Our observations highlight episodic silicic volcanism characterised by rapid evolution from high-grade ignimbrites to moderately and poorly welded ignimbrites. We infer rapid emptying of large, shallow silicic reservoirs and frequent source switching is responsible for the observed characteristics. |
| format | Article |
| id | doaj-art-24d1438be9d04523a94382784ad6e1d4 |
| institution | Kabale University |
| issn | 2610-3540 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Volcanica |
| record_format | Article |
| series | Volcanica |
| spelling | doaj-art-24d1438be9d04523a94382784ad6e1d42024-12-13T02:40:09ZengVolcanicaVolcanica2610-35402024-12-017292595110.30909/vol.07.02.925951266episodic onset of explosive and silicic-dominated volcanism in a continental rift; insights from the Permian Oslo Rift, NorwayJack Whattam0https://orcid.org/0000-0002-8314-5234Ivar Midtkandal1https://orcid.org/0000-0002-4507-288XDougal Jerram2https://orcid.org/0000-0003-0043-4426Sara Callegaro3https://orcid.org/0000-0003-3932-7935Henrik Svensen4Department of Geosciences, University of Oslo, Norway.Department of Geosciences, University of Oslo, Norway.Njord Centre, Department of Geosciences, University of Oslo, Norway.Centre for Planetary Habitability (PHAB), Department of Geosciences, University of Oslo, Norway.Department of Geosciences, University of Oslo, Norway.The nature of rifting episodes and their associated volcanism mark key stratigraphic events in the evolution of volcano-sedimentary basins. Following the final assemblage of Pangea, the European region was subject to rifting and magmatism during crustal re-equilibration throughout the Permian. The aborted, partially eroded Oslo Rift is an excellent archive of this Permian magmatism, but the late-stage volcanological evolution is poorly understood. We present the first detailed documentation of a succession covering this period, with mafic lavas and volcaniclastic (tuff breccia) deposits, trachy-andesitic tuffs, and rheomorphic to moderately welded ignimbrites. Contrary to previous ideas, we show evidence suggesting the development of Strombolian-type scoria-cones, silicic fissure-fed eruptions, and major periods of rift-wide volcanic quiescence. Our observations highlight episodic silicic volcanism characterised by rapid evolution from high-grade ignimbrites to moderately and poorly welded ignimbrites. We infer rapid emptying of large, shallow silicic reservoirs and frequent source switching is responsible for the observed characteristics.https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/281permianriftingexplosive volcanismvolcanic stratigraphyoslo rift |
| spellingShingle | Jack Whattam Ivar Midtkandal Dougal Jerram Sara Callegaro Henrik Svensen episodic onset of explosive and silicic-dominated volcanism in a continental rift; insights from the Permian Oslo Rift, Norway Volcanica permian rifting explosive volcanism volcanic stratigraphy oslo rift |
| title | episodic onset of explosive and silicic-dominated volcanism in a continental rift; insights from the Permian Oslo Rift, Norway |
| title_full | episodic onset of explosive and silicic-dominated volcanism in a continental rift; insights from the Permian Oslo Rift, Norway |
| title_fullStr | episodic onset of explosive and silicic-dominated volcanism in a continental rift; insights from the Permian Oslo Rift, Norway |
| title_full_unstemmed | episodic onset of explosive and silicic-dominated volcanism in a continental rift; insights from the Permian Oslo Rift, Norway |
| title_short | episodic onset of explosive and silicic-dominated volcanism in a continental rift; insights from the Permian Oslo Rift, Norway |
| title_sort | episodic onset of explosive and silicic dominated volcanism in a continental rift insights from the permian oslo rift norway |
| topic | permian rifting explosive volcanism volcanic stratigraphy oslo rift |
| url | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/281 |
| work_keys_str_mv | AT jackwhattam episodiconsetofexplosiveandsilicicdominatedvolcanisminacontinentalriftinsightsfromthepermianosloriftnorway AT ivarmidtkandal episodiconsetofexplosiveandsilicicdominatedvolcanisminacontinentalriftinsightsfromthepermianosloriftnorway AT dougaljerram episodiconsetofexplosiveandsilicicdominatedvolcanisminacontinentalriftinsightsfromthepermianosloriftnorway AT saracallegaro episodiconsetofexplosiveandsilicicdominatedvolcanisminacontinentalriftinsightsfromthepermianosloriftnorway AT henriksvensen episodiconsetofexplosiveandsilicicdominatedvolcanisminacontinentalriftinsightsfromthepermianosloriftnorway |