| Texto completo | |
| Autor(es): |
de Moura, Denise Silva
[1, 2]
;
Molina, Eder Cassola
[1]
;
Marangoni, Yara Regina
[1]
;
Jovane, Luigi
[2]
Número total de Autores: 4
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Inst Oceanog, Sao Paulo, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Frontiers in Earth Science; v. 7, DEC 4 2019. |
| Citações Web of Science: | 0 |
| Resumo | |
The Brazilian Equatorial Margin (BEM) is a transform passive margin with long fracture zones and several seamounts, including the largest one, the Ceara Plateau (CP). This is a complex and poorly studied area, with few available geophysical data. Gravity and magnetic data from the Equant I Project, seismic published lines and other previous studies are used to make several models and analyses. We related the basement, internally comprised of two magmatic highs, to gravity and magnetic anomalies since there are a positive density and susceptibility contrast between sedimentary and basement rocks. Through gravity and magnetic forward modeling, we estimated the basement surface between 800 and 6000 m and the Mohorovicic discontinuity about 22-23 km below the CP. We also present and discuss the position of the continent-ocean boundary 40 km away from the continental shelf, placing the plateau at the oceanic crust domain, and the area of the transitional crust, with an extension of 40-50 km, formed during the rifting phase of the Atlantic Ocean opening. (AU) | |
| Processo FAPESP: | 16/24946-9 - Mudanças do nível do mar e o Sistema Monçônico Global: avaliação através de testemunhos marinhos no Brasil |
| Beneficiário: | Luigi Jovane |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático |
| Processo FAPESP: | 16/15854-3 - Modelagem gravimétrica e magnética do platô do Ceará, margem equatorial brasileira |
| Beneficiário: | Denise Silva de Moura |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |