The geology of the Aracruz pluton (Espírito Santo, Brazil), a Cambrian post-orogenic intrusion in the aftermath of Gondwana amalgamation
We present the first geological map of the Aracruz pluton (Espírito Santo, Brazil), which belongs to the late Cambrian post-orogenic suite that intruded the Nova Venécia metapelites and Ediacaran syn-orogenic S-type granites of the Araçuaí belt. Our mapping coupled with airbone magnetic and radiomet...
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Taylor & Francis Group
2024-12-01
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| Series: | Journal of Maps |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/17445647.2024.2411818 |
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| author | Andrea Galli Max W. Schmidt Valdecir de Assis Janasi Felix Soormann Clara Talca Onken Alexandra Aregger Tobias Hendrickx Samuel Huber Zoe Kok Emanuel Pestalozzi Tabea Stäheli Luka Wanner Vinicius Louro |
| author_facet | Andrea Galli Max W. Schmidt Valdecir de Assis Janasi Felix Soormann Clara Talca Onken Alexandra Aregger Tobias Hendrickx Samuel Huber Zoe Kok Emanuel Pestalozzi Tabea Stäheli Luka Wanner Vinicius Louro |
| author_sort | Andrea Galli |
| collection | DOAJ |
| description | We present the first geological map of the Aracruz pluton (Espírito Santo, Brazil), which belongs to the late Cambrian post-orogenic suite that intruded the Nova Venécia metapelites and Ediacaran syn-orogenic S-type granites of the Araçuaí belt. Our mapping coupled with airbone magnetic and radiometric observations reveals that the pluton is not regularly zoned. It is composed of porphyric alkali feldspar granites, into which charnockite and quartz-diorite bands intruded as several pulses while the granites were a deforming crystal mush, and an undeformed central norite emplaced when most movement of the host magma had ceased. Steep-dipping concentric magmatic foliation, magmatic foliation parallel to tectonic foliation in the country rock, the noritic core, and the irregular charnockite and quartz-diorite band alignment suggest buoyancy-driven diapirism as emplacement mechanism. The Aracruz pluton is a superb example of mantle-derived post-orogenic intrusion attesting for the production of continental crust during the final stages of a Wylson cycle. |
| format | Article |
| id | doaj-art-04fb5131587f4c318e1b1a53b7817c97 |
| institution | Kabale University |
| issn | 1744-5647 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Maps |
| spelling | doaj-art-04fb5131587f4c318e1b1a53b7817c972025-01-06T14:32:05ZengTaylor & Francis GroupJournal of Maps1744-56472024-12-0120110.1080/17445647.2024.2411818The geology of the Aracruz pluton (Espírito Santo, Brazil), a Cambrian post-orogenic intrusion in the aftermath of Gondwana amalgamationAndrea Galli0Max W. Schmidt1Valdecir de Assis Janasi2Felix Soormann3Clara Talca Onken4Alexandra Aregger5Tobias Hendrickx6Samuel Huber7Zoe Kok8Emanuel Pestalozzi9Tabea Stäheli10Luka Wanner11Vinicius Louro12Department of Earth Sciences, ETH, Zürich, SwitzerlandDepartment of Earth Sciences, ETH, Zürich, SwitzerlandInstituto de Geociências, Universidade de São Paulo, São Paulo, BrazilDepartment of Earth Sciences, ETH, Zürich, SwitzerlandDepartment of Earth Sciences, ETH, Zürich, SwitzerlandDepartment of Earth Sciences, ETH, Zürich, SwitzerlandDepartment of Earth Sciences, ETH, Zürich, SwitzerlandDepartment of Earth Sciences, ETH, Zürich, SwitzerlandDepartment of Earth Sciences, ETH, Zürich, SwitzerlandDepartment of Earth Sciences, ETH, Zürich, SwitzerlandDepartment of Earth Sciences, ETH, Zürich, SwitzerlandDepartment of Earth Sciences, ETH, Zürich, SwitzerlandInstituto de Geociências, Universidade de São Paulo, São Paulo, BrazilWe present the first geological map of the Aracruz pluton (Espírito Santo, Brazil), which belongs to the late Cambrian post-orogenic suite that intruded the Nova Venécia metapelites and Ediacaran syn-orogenic S-type granites of the Araçuaí belt. Our mapping coupled with airbone magnetic and radiometric observations reveals that the pluton is not regularly zoned. It is composed of porphyric alkali feldspar granites, into which charnockite and quartz-diorite bands intruded as several pulses while the granites were a deforming crystal mush, and an undeformed central norite emplaced when most movement of the host magma had ceased. Steep-dipping concentric magmatic foliation, magmatic foliation parallel to tectonic foliation in the country rock, the noritic core, and the irregular charnockite and quartz-diorite band alignment suggest buoyancy-driven diapirism as emplacement mechanism. The Aracruz pluton is a superb example of mantle-derived post-orogenic intrusion attesting for the production of continental crust during the final stages of a Wylson cycle.https://www.tandfonline.com/doi/10.1080/17445647.2024.2411818Geological maparacruz plutonaraçuaí beltPost-collisional magmatism |
| spellingShingle | Andrea Galli Max W. Schmidt Valdecir de Assis Janasi Felix Soormann Clara Talca Onken Alexandra Aregger Tobias Hendrickx Samuel Huber Zoe Kok Emanuel Pestalozzi Tabea Stäheli Luka Wanner Vinicius Louro The geology of the Aracruz pluton (Espírito Santo, Brazil), a Cambrian post-orogenic intrusion in the aftermath of Gondwana amalgamation Journal of Maps Geological map aracruz pluton araçuaí belt Post-collisional magmatism |
| title | The geology of the Aracruz pluton (Espírito Santo, Brazil), a Cambrian post-orogenic intrusion in the aftermath of Gondwana amalgamation |
| title_full | The geology of the Aracruz pluton (Espírito Santo, Brazil), a Cambrian post-orogenic intrusion in the aftermath of Gondwana amalgamation |
| title_fullStr | The geology of the Aracruz pluton (Espírito Santo, Brazil), a Cambrian post-orogenic intrusion in the aftermath of Gondwana amalgamation |
| title_full_unstemmed | The geology of the Aracruz pluton (Espírito Santo, Brazil), a Cambrian post-orogenic intrusion in the aftermath of Gondwana amalgamation |
| title_short | The geology of the Aracruz pluton (Espírito Santo, Brazil), a Cambrian post-orogenic intrusion in the aftermath of Gondwana amalgamation |
| title_sort | geology of the aracruz pluton espirito santo brazil a cambrian post orogenic intrusion in the aftermath of gondwana amalgamation |
| topic | Geological map aracruz pluton araçuaí belt Post-collisional magmatism |
| url | https://www.tandfonline.com/doi/10.1080/17445647.2024.2411818 |
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