Reconstructed J-Anomaly: Reconstructed total magnetic anomaly (120 Ma) of the Southern North Atlantic toCentral Atlantic area. Adapted from Szameitat et al. (2020). Data from Verhoef et al. (1996), borderland geology from the Geological Map of the World (Bouysse, 2014), and isochron marks (black dots) from GSFML project (Seton et al. , 2014).
Pesquisa de doutorado
A tese utilizou mapas magnetométricos para confecção de cenários paleoreconstruídos, para serem utilizadas na compreensão da entrada de magma na crosta pobre em magma da Ibéria Ocidental e de Newfoundland. Isto me permitiu criar uma nova imagem das Anomalias-J reconstruídas, um par de anomalias magnéticas pouco compreendidas em termos de natureza e origem. O trabalho destaca a importância da integração entre tectônica e geofísica, e ampliou o conhecimento sobre a origem das Anomalias-J. Ainda, este estudo mostra como a herança tectônica da litosfera pode guiar processos magmáticos e a deformação crustal na evolução do domínio oceânico.
PhD Research
This work uses magnetic maps for producing paleo-reconstructed scenarios, in the search of understanding magmatic additions into the Iberia-W and Newfoundland magma-poor crusts. It has allowed me to create a new reconstructed view of the J-Anomalies, a pair of magnetic anomalies that are little understood in terms of nature and origin. This work has highlighted the importance of integrating tectonic and geophysical data, and improved the understanding of magnetic J-Anomalies. Also, it shows how tectonic inheritance in the lithosphere can rule magmatic processes and crustal deformation in the oceanic realm.
Related publications
• PhD Thesis: Szameitat, L. S. A., 2021. (...) (em breve)
• SZAMEITAT, L. S. A.; MANATSCHAL, G.; FERREIRA, F. J. F; HEILBRON, M. Magnetic characterization of the zigzag shaped J-anomaly: implications for kinematics and breakup processes at the Iberia-Newfoundland margins. Terra Nova, v.32, n.5, 369-380, 2020. DOI:https://doi.org/10.1111/ter.12466 DOI
• SZAMEITAT, L. S. A.; FERREIRA, F. J. F.; MANATSCHAL, G.; HEILBRON, M.
C. P. L. Evidence of mantle inheritance on the ultra-distal Western
Iberian margin from transformed total magnetic anomaly. Revista
Brasileira de Geofísica, v. 36, n. 3, p. 307-316, 2018. DOI:http://dx.doi.org/10.22564/rbgf.v36i3.1957 DOI
References
BOUYSSE, P., 2014, Geological Map of the World at 1:35
000 000. UNESCO CGMW program.
SETON, M.; WHITTAKER, J.; WESSEL, P.; MÜLLER, R. D.; DEMETS, C.; MERKOURIEV, S.; CANDE, S.; GAINA, C.; EAGLES, G.; GRANOT, R.; STOCK, J.; WRIGHT, N.; WILLIAMS, S. Community infrastructure and repository for marine magnetic identifications. Geochemistry, Geophysics, Geosystems, v. 5, p.1629-1641, 2014.
VERHOEF, J; ROEST, W R; MACNAB, R; ARKANI-HAMED, J; PROJECT TEAM. Magnetic
anomalies of the Arctic and north Atlantic oceans and adjacent land areas. Geological
Survey of Canada, Open File 3125a, 1996. https://doi.org/10.4095/208180
