Morphostructure, emplacement and duration of the Abrolhos Magmatic Province: A geophysical analysis of the largest post-breakup magmatism of the South-Eastern Brazilian margin

Stanton, Natasha; Gordon, Andres; Cardozo, Cassia; Kusznir, Nick

doi:10.1016/j.marpetgeo.2021.105230

Cited by 14 publications

(7 citation statements)

References 66 publications

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“…(1959) while the models were produced based on susceptibility parameters of Stanton et al. (2021) as shown in Table 1. This is necessary to get minimum RMS error with maximum fit between the theoretical and observed magnetics models generated.…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, the density values from Stanton et al. (2021) were used for the upper crust, lower crust, and the mantle in profile B–Bʹ (Table 1) while we used top basement depth values ranging from 1 to 2 km in the simulation (Ojo, 1990; Salawu et al., 2020, 2021). According to Bouzid et al.…”

Section: Methodsmentioning

confidence: 99%

“…The joint magnetic and gravity modeling of profile B-Bʹ was constraint by density values of sedimentary and volcanic rocks in adjacent Benue Trough (Table 1) as reported by Ajayi and Ajakaiye (1986). Furthermore, the density values from Stanton et al (2021) were used for the upper crust, lower crust, and the mantle in profile B-Bʹ (Table 1) while we used top basement depth values ranging from 1 to 2 km in the simulation (Ojo, 1990;Salawu et al, 2020Salawu et al, , 2021. According to Bouzid et al (2008), Brahimi et al (2018) and Deramchi (2016), 20 km may be employed to estimate top of the lower crust in the Trans-Saharan Belt.…”

Section: -D Modelingmentioning

confidence: 99%

“…Profiles A-Aʹ, B-Bʹ, and C-Cʹ, which extends from the crystalline basement through the sedimentary basin, crossing various magnetic and gravity anomalies, were selected for crustal modeling. Modeling of aeromagnetic data along profiles A-Aʹ and C-Cʹ, and the aeromagnetic responses of models was achieved using the techniques of Talwani and Heirtzler (1964) and Talwani et al (1959) while the models were produced based on susceptibility parameters of Stanton et al (2021) as shown in Table 1. This is necessary to get minimum RMS error with maximum fit between the theoretical and observed magnetics models generated.…”

Section: -D Modelingmentioning

confidence: 99%

“…Magnetic Susceptibility Values for Each Layer in the 2-D Forward Aeromagnetic Models Adopted FromStanton et al (2021) …”

mentioning

confidence: 99%

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The Middle Niger Basin in Nigeria Has a Rift Origin, as Revealed by the Inversion and Modeling of Gravity and Magnetic Data

Salawu,

Omosanya,

Fournier

2024

Earth and Space Science

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The NW‐SE oriented Middle Niger Basin, which is a Campano‐Maastrichtian inland basin has been the subject of debate among geoscientists regarding its origin and development. This paper aims to unravel the basin's origin and evolution by using high‐resolution magnetic, gravity, and topographical data. The integration of aeromagnetic and gravity data provides a means to assess the influence of igneous intrusions during the basin's evolution. The study presents a new perspective on the origin of the basin, suggesting a rift origin where orthogonal extension played a crucial role in its evolution. The research also investigates the relationship between intrusive rocks and the formation of the basin, finding these rocks are solely located within the basement. The magnetic and gravity maps reveal anomalies associated with intrusive structures within the Precambrian crystalline basement. This is a common feature shared with rifted basins on a global scale.

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Section: Methodsmentioning

confidence: 99%