Geochemistry of the Northern Paraná Continental Flood Basalt (PCFB) Province: implications for regional chemostratigraphy
ABSTRACT: The Paraná Continental Flood Basalt (PCFB) province is one of the largest igneous provinces on Earth, but little is known about the architecture and geochemical characteristics of the lava flows. In this context, a set of borehole samples arranged in an NEE-SWW profile - more than 600 km l...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Geologia
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| Series: | Brazilian Journal of Geology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892018000200177&lng=en&tlng=en |
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| author | Fábio Braz Machado Eduardo Reis Viana Rocha-Júnior Leila Soares Marques Antonio José Ranalli Nardy Larissa Vieira Zezzo Natasha Sarde Marteleto |
| author_facet | Fábio Braz Machado Eduardo Reis Viana Rocha-Júnior Leila Soares Marques Antonio José Ranalli Nardy Larissa Vieira Zezzo Natasha Sarde Marteleto |
| author_sort | Fábio Braz Machado |
| collection | DOAJ |
| description | ABSTRACT: The Paraná Continental Flood Basalt (PCFB) province is one of the largest igneous provinces on Earth, but little is known about the architecture and geochemical characteristics of the lava flows. In this context, a set of borehole samples arranged in an NEE-SWW profile - more than 600 km long - located in the northern PCFB was used to define its chemostratigraphy. In this region, the outcrops are rare, and the volcanic piles are covered by hundreds of meters of sedimentary rocks from the Bauru Sub-Basin. This study aimed to explore the chemostratigraphic column from northern PCFB to improve the understanding of its internal architecture and to characterize the flood basalt sequences by using the petrography and elemental geochemistry of surface and borehole samples. The results showed the presence of the main four magma types, which were essentially distinguished by their P 2 O 5 , TiO 2 and Sr concentrations, as well as Zr/Y ratios, with excellent chemostratigraphy relations. |
| first_indexed | 2024-12-16T13:18:23Z |
| format | Article |
| id | doaj.art-5858d0f5586644ac9c876fea15832fd0 |
| institution | Directory Open Access Journal |
| issn | 2317-4692 |
| language | English |
| last_indexed | 2024-12-16T13:18:23Z |
| publisher | Sociedade Brasileira de Geologia |
| record_format | Article |
| series | Brazilian Journal of Geology |
| spelling | doaj.art-5858d0f5586644ac9c876fea15832fd02022-12-21T22:30:25ZengSociedade Brasileira de GeologiaBrazilian Journal of Geology2317-469248217719910.1590/2317-4889201820180098S2317-48892018000200177Geochemistry of the Northern Paraná Continental Flood Basalt (PCFB) Province: implications for regional chemostratigraphyFábio Braz MachadoEduardo Reis Viana Rocha-JúniorLeila Soares MarquesAntonio José Ranalli NardyLarissa Vieira ZezzoNatasha Sarde MarteletoABSTRACT: The Paraná Continental Flood Basalt (PCFB) province is one of the largest igneous provinces on Earth, but little is known about the architecture and geochemical characteristics of the lava flows. In this context, a set of borehole samples arranged in an NEE-SWW profile - more than 600 km long - located in the northern PCFB was used to define its chemostratigraphy. In this region, the outcrops are rare, and the volcanic piles are covered by hundreds of meters of sedimentary rocks from the Bauru Sub-Basin. This study aimed to explore the chemostratigraphic column from northern PCFB to improve the understanding of its internal architecture and to characterize the flood basalt sequences by using the petrography and elemental geochemistry of surface and borehole samples. The results showed the presence of the main four magma types, which were essentially distinguished by their P 2 O 5 , TiO 2 and Sr concentrations, as well as Zr/Y ratios, with excellent chemostratigraphy relations.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892018000200177&lng=en&tlng=enParaná Continental Flood Basaltschemostratigraphyvolcanic successionsmagma typesgeochemistry of boreholes |
| spellingShingle | Fábio Braz Machado Eduardo Reis Viana Rocha-Júnior Leila Soares Marques Antonio José Ranalli Nardy Larissa Vieira Zezzo Natasha Sarde Marteleto Geochemistry of the Northern Paraná Continental Flood Basalt (PCFB) Province: implications for regional chemostratigraphy Brazilian Journal of Geology Paraná Continental Flood Basalts chemostratigraphy volcanic successions magma types geochemistry of boreholes |
| title | Geochemistry of the Northern Paraná Continental Flood Basalt (PCFB) Province: implications for regional chemostratigraphy |
| title_full | Geochemistry of the Northern Paraná Continental Flood Basalt (PCFB) Province: implications for regional chemostratigraphy |
| title_fullStr | Geochemistry of the Northern Paraná Continental Flood Basalt (PCFB) Province: implications for regional chemostratigraphy |
| title_full_unstemmed | Geochemistry of the Northern Paraná Continental Flood Basalt (PCFB) Province: implications for regional chemostratigraphy |
| title_short | Geochemistry of the Northern Paraná Continental Flood Basalt (PCFB) Province: implications for regional chemostratigraphy |
| title_sort | geochemistry of the northern parana continental flood basalt pcfb province implications for regional chemostratigraphy |
| topic | Paraná Continental Flood Basalts chemostratigraphy volcanic successions magma types geochemistry of boreholes |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892018000200177&lng=en&tlng=en |
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