Detalhes bibliográficos
| Resumo: | The jigsaw-puzzle fit of South America and Africa is an icon of plate tectonics and continental drift. Fieldwork in Angola since 2002 allows the correlation of onshore outcrops and offshore geophysical and wellcore data in the context of rift, sag, salt, and post-salt drift phases of the opening of the central South Atlantic. These outcrops, ranging in age from >130 Ma to <71 Ma, record Early Cretaceous outpouring of the Etendeka–Paraná Large Igneous Province (Bero Volcanic Complex) and rifting, followed by continental carbonate and siliciclastic deposition (Tumbalunda Formation) during the sagging of the nascent central South Atlantic basin. By the Aptian, evaporation of sea water resulted in thick salt deposits (Bambata Formation), terminated by seafloor spreading. The Equatorial Atlantic Gateway began opening by the early Late Cretaceous (100 Ma) and allowed flow of currents between the North and South Atlantic, creating environmental conditions that heralded the introduction of marine reptiles. These dramatic outcrops are a unique element of geoheritage because they arguably comprise the most complete terrestrially exposed geological record of the puzzle-like icon of continental drift. |
|---|
| Autores principais: | Jacobs, Louis L. |
|---|
| Outros Autores: | Schröder, Stefan; de Sousa, Nair; Dixon, Richard; Fiordalisi, Edoardo; Marechal, Arthur; Mateus, Octávio; Nsungani, Pedro Claude; Polcyn, Michael J.; Pereira, Gustavo Do Couto Ramos; Rochelle-Bates, Nathan; Schulp, Anne S.; Scotese, Christopher R.; Sharp, Ian; Silvano, Carlos Gaudari; Swart, Roger; Vineyard, Diana P. |
|---|
| Assunto: | Water Science and Technology Ocean Engineering Geology SDG 14 - Life Below Water |
|---|
| Ano: | 2024 |
|---|
| País: | Portugal |
|---|
| Tipo de documento: | artigo |
|---|
| Tipo de acesso: | acesso aberto |
|---|
| Instituição associada: | Universidade Nova de Lisboa |
|---|
| Idioma: | inglês |
|---|
| Origem: | Repositório Institucional da UNL |
|---|