Petrogenesis of the drift magmatism in the Cabo Frio High, Campos Basin, Brazil: Evidence from Sr–Nd–Pb–Hf isotopes
Abstract Situated between the Campos and Santos basins, the Cabo Frio High emerges as a focal point of heightened magmatic activity during the Santonian–Campanian and the Eocene period following the breakup of these basins. The geodynamic framework associated with these events took place during thei...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Geologia
2025-05-01
|
| Series: | Brazilian Journal of Geology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892025000100305&lng=en&tlng=en |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850254799526690816 |
|---|---|
| author | Tatiele de Barros Artur Corval Sérgio de Castro Valente Alan Wanderley Albuquerque Miranda |
| author_facet | Tatiele de Barros Artur Corval Sérgio de Castro Valente Alan Wanderley Albuquerque Miranda |
| author_sort | Tatiele de Barros |
| collection | DOAJ |
| description | Abstract Situated between the Campos and Santos basins, the Cabo Frio High emerges as a focal point of heightened magmatic activity during the Santonian–Campanian and the Eocene period following the breakup of these basins. The geodynamic framework associated with these events took place during their passive margin stage, wherein magmatic occurrences could potentially be attributed to the reactivation of significant geological structures or thermal enhancement facilitated by proximal hotspots, within a context of lithospheric thinning (i.e., Trindade Plume). This investigation unveils novel Sr–Nd–Pb–Hf isotope data derived from alkaline magmatic rocks extracted from three boreholes strategically positioned within the Cabo Frio High area. The evolutionary trajectory of these rocks reflects the intricate processes of assimilation and fractional crystallization. The results of the analysis and binary mixing modeling point out to an involvement of both depleted (characterized by Depleted Mantle [DM]/Mid-Ocean Ridge Basalt [MORB] or HIMU compositions) and enriched (manifesting as the Enriched Mantle I [EMI] and the Enriched Mantle II [EMII]) sources in the genesis of these magmas. Moreover, the discerned incorporation of a fertile Ocean Island Basalt (OIB-like) reservoir hints at a plausible association with the Trindade Plume, amplifying the complexity of the magmatic genesis within the studied region. |
| format | Article |
| id | doaj-art-ec97240f36704de7b03e6c23893bb1f4 |
| institution | OA Journals |
| issn | 2317-4692 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Sociedade Brasileira de Geologia |
| record_format | Article |
| series | Brazilian Journal of Geology |
| spelling | doaj-art-ec97240f36704de7b03e6c23893bb1f42025-08-20T01:57:01ZengSociedade Brasileira de GeologiaBrazilian Journal of Geology2317-46922025-05-015510.1590/2317-4889202420240040Petrogenesis of the drift magmatism in the Cabo Frio High, Campos Basin, Brazil: Evidence from Sr–Nd–Pb–Hf isotopesTatiele de Barroshttps://orcid.org/0009-0004-9399-0556Artur Corvalhttps://orcid.org/0000-0002-5154-2737Sérgio de Castro Valentehttps://orcid.org/0000-0002-7467-672XAlan Wanderley Albuquerque Mirandahttps://orcid.org/0000-0002-7531-2936Abstract Situated between the Campos and Santos basins, the Cabo Frio High emerges as a focal point of heightened magmatic activity during the Santonian–Campanian and the Eocene period following the breakup of these basins. The geodynamic framework associated with these events took place during their passive margin stage, wherein magmatic occurrences could potentially be attributed to the reactivation of significant geological structures or thermal enhancement facilitated by proximal hotspots, within a context of lithospheric thinning (i.e., Trindade Plume). This investigation unveils novel Sr–Nd–Pb–Hf isotope data derived from alkaline magmatic rocks extracted from three boreholes strategically positioned within the Cabo Frio High area. The evolutionary trajectory of these rocks reflects the intricate processes of assimilation and fractional crystallization. The results of the analysis and binary mixing modeling point out to an involvement of both depleted (characterized by Depleted Mantle [DM]/Mid-Ocean Ridge Basalt [MORB] or HIMU compositions) and enriched (manifesting as the Enriched Mantle I [EMI] and the Enriched Mantle II [EMII]) sources in the genesis of these magmas. Moreover, the discerned incorporation of a fertile Ocean Island Basalt (OIB-like) reservoir hints at a plausible association with the Trindade Plume, amplifying the complexity of the magmatic genesis within the studied region.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892025000100305&lng=en&tlng=enalkaline magmatismCampos Basinisotope geochemistry |
| spellingShingle | Tatiele de Barros Artur Corval Sérgio de Castro Valente Alan Wanderley Albuquerque Miranda Petrogenesis of the drift magmatism in the Cabo Frio High, Campos Basin, Brazil: Evidence from Sr–Nd–Pb–Hf isotopes Brazilian Journal of Geology alkaline magmatism Campos Basin isotope geochemistry |
| title | Petrogenesis of the drift magmatism in the Cabo Frio High, Campos Basin, Brazil: Evidence from Sr–Nd–Pb–Hf isotopes |
| title_full | Petrogenesis of the drift magmatism in the Cabo Frio High, Campos Basin, Brazil: Evidence from Sr–Nd–Pb–Hf isotopes |
| title_fullStr | Petrogenesis of the drift magmatism in the Cabo Frio High, Campos Basin, Brazil: Evidence from Sr–Nd–Pb–Hf isotopes |
| title_full_unstemmed | Petrogenesis of the drift magmatism in the Cabo Frio High, Campos Basin, Brazil: Evidence from Sr–Nd–Pb–Hf isotopes |
| title_short | Petrogenesis of the drift magmatism in the Cabo Frio High, Campos Basin, Brazil: Evidence from Sr–Nd–Pb–Hf isotopes |
| title_sort | petrogenesis of the drift magmatism in the cabo frio high campos basin brazil evidence from sr nd pb hf isotopes |
| topic | alkaline magmatism Campos Basin isotope geochemistry |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892025000100305&lng=en&tlng=en |
| work_keys_str_mv | AT tatieledebarros petrogenesisofthedriftmagmatisminthecabofriohighcamposbasinbrazilevidencefromsrndpbhfisotopes AT arturcorval petrogenesisofthedriftmagmatisminthecabofriohighcamposbasinbrazilevidencefromsrndpbhfisotopes AT sergiodecastrovalente petrogenesisofthedriftmagmatisminthecabofriohighcamposbasinbrazilevidencefromsrndpbhfisotopes AT alanwanderleyalbuquerquemiranda petrogenesisofthedriftmagmatisminthecabofriohighcamposbasinbrazilevidencefromsrndpbhfisotopes |