Evaluation of mafic dyke swarm continuity under the Joaquina dune field with ground magnetic survey
ABSTRACT: A ground magnetic survey in a Central-East area of the Santa Catarina Island tested the continuity of the Cretaceous mafic dykes beneath the aeolic sediments of the Joaquina plain. Vertical gradient measurements taken in 1880 stations did not detect any magnetic anomaly related to subsurfa...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Geologia
2017-06-01
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| Series: | Brazilian Journal of Geology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892017000200237&lng=en&tlng=en |
| _version_ | 1819238045290856448 |
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| author | George Caminha-Maciel Marcia Ernesto Welitom R. Borges Junior Bresolin Reginaldo Lemos |
| author_facet | George Caminha-Maciel Marcia Ernesto Welitom R. Borges Junior Bresolin Reginaldo Lemos |
| author_sort | George Caminha-Maciel |
| collection | DOAJ |
| description | ABSTRACT: A ground magnetic survey in a Central-East area of the Santa Catarina Island tested the continuity of the Cretaceous mafic dykes beneath the aeolic sediments of the Joaquina plain. Vertical gradient measurements taken in 1880 stations did not detect any magnetic anomaly related to subsurface dykes. Four magnetic profiles located to the north and south of the main area showed the magnetic signature of various dykes some of them already mapped (north profiles), but also some in subsurface (south profiles). These results suggest that the dykes probably were shallow and truncated, and were already eroded along with the crystalline basement. |
| first_indexed | 2024-12-23T13:29:59Z |
| format | Article |
| id | doaj.art-5c7b320c22554d7c968aadb321eaa08d |
| institution | Directory Open Access Journal |
| issn | 2317-4692 |
| language | English |
| last_indexed | 2024-12-23T13:29:59Z |
| publishDate | 2017-06-01 |
| publisher | Sociedade Brasileira de Geologia |
| record_format | Article |
| series | Brazilian Journal of Geology |
| spelling | doaj.art-5c7b320c22554d7c968aadb321eaa08d2022-12-21T17:45:12ZengSociedade Brasileira de GeologiaBrazilian Journal of Geology2317-46922017-06-0147223724710.1590/2317-4889201720170009S2317-48892017000200237Evaluation of mafic dyke swarm continuity under the Joaquina dune field with ground magnetic surveyGeorge Caminha-MacielMarcia ErnestoWelitom R. BorgesJunior BresolinReginaldo LemosABSTRACT: A ground magnetic survey in a Central-East area of the Santa Catarina Island tested the continuity of the Cretaceous mafic dykes beneath the aeolic sediments of the Joaquina plain. Vertical gradient measurements taken in 1880 stations did not detect any magnetic anomaly related to subsurface dykes. Four magnetic profiles located to the north and south of the main area showed the magnetic signature of various dykes some of them already mapped (north profiles), but also some in subsurface (south profiles). These results suggest that the dykes probably were shallow and truncated, and were already eroded along with the crystalline basement.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892017000200237&lng=en&tlng=enDyke swarmSanta Catarina IslandGeophysical mappingGround surveysMagnetic methods |
| spellingShingle | George Caminha-Maciel Marcia Ernesto Welitom R. Borges Junior Bresolin Reginaldo Lemos Evaluation of mafic dyke swarm continuity under the Joaquina dune field with ground magnetic survey Brazilian Journal of Geology Dyke swarm Santa Catarina Island Geophysical mapping Ground surveys Magnetic methods |
| title | Evaluation of mafic dyke swarm continuity under the Joaquina dune field with ground magnetic survey |
| title_full | Evaluation of mafic dyke swarm continuity under the Joaquina dune field with ground magnetic survey |
| title_fullStr | Evaluation of mafic dyke swarm continuity under the Joaquina dune field with ground magnetic survey |
| title_full_unstemmed | Evaluation of mafic dyke swarm continuity under the Joaquina dune field with ground magnetic survey |
| title_short | Evaluation of mafic dyke swarm continuity under the Joaquina dune field with ground magnetic survey |
| title_sort | evaluation of mafic dyke swarm continuity under the joaquina dune field with ground magnetic survey |
| topic | Dyke swarm Santa Catarina Island Geophysical mapping Ground surveys Magnetic methods |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892017000200237&lng=en&tlng=en |
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