Magnetic investigation and 2½ D gravity profile modelling across the Beattie magnetic anomaly in the southeastern Karoo Basin, South Africa

Baiyegunhi, Ch.; Gwavava, O.

doi:10.1007/s11600-017-0011-3

Artykuł - szczegóły

Tytuł artykułu

Magnetic investigation and 2½ D gravity profile modelling across the Beattie magnetic anomaly in the southeastern Karoo Basin, South Africa

Autorzy

Baiyegunhi Ch. , Gwavava O.

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-017-0011-3

Warianty tytułu

Języki publikacji

Abstrakty

The southeastern Karoo Basin is considered to be one of the most prospective areas for shale gas exploration in South Africa. An interesting magnetic anomaly, the Beattie magnetic anomaly (BMA), and geologic intrusions are seen on the magnetic map. To date, the source of the BMA and interconnectivity of the igneous intrusions are not well understood. In this study, we investigate the interconnectivity of the igneous intrusions and possible location of the source of the BMA using gravity and magnetic methods. The gravity model results showed that igneous intrusions are interconnected at depth, which probably pose threat by increasing the risk of fracking the Karoo for shale gas exploration. The magnetic results revealed that the BMA becomes stronger with depth. The average depths to the top of the shallow and deep magnetic sources were estimated to be approximately 0.6 and 15 km, respectively.

Słowa kluczowe

magnetic anomaly igneous intrusion gravity model Karoo Basin

anomalia magnetyczna intruzja magmowa siła ciężkości model zagłębienie Karoo

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2017

Tom

Vol. 65, no. 1

Strony

119--138

Opis fizyczny

Bibliogr. 58 poz.

Twórcy

autor

Baiyegunhi Ch.

201201530@ufh.ac.za

Department of Geology, Faculty of Science and Agriculture University of Fort Hare, Alice, South Africa

autor

Gwavava O.

Department of Geology, Faculty of Science and Agriculture University of Fort Hare, Alice, South Africa

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