Gelson Ferreira Souza Junior- Master of Science
- PhD Candidate at University of São Paulo
Gelson Ferreira Souza Junior
- Master of Science
- PhD Candidate at University of São Paulo
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15
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Publications
Publications (15)
Magmatic rocks record ambient magnetic fields during cooling, preserving them for billions of years through thermoremanent magnetization (TRM). TRM accuracy depends on particle size, shape, magnetic properties, and the number of particles available to record the field. While traditionally interpreted via Neél's single‐domain theory, most particles...
The first step in scientific data acquisition often involves analyzing entire samples, providing only a general characterization of the material. Enhancing data acquisition by improving spatial resolution and isolating the underlying phenomena contributing to the overall signal has become a central direction in various scientific fields. In paleoma...
Locating the sources of observed disturbances in potential-field data is a challenging problem due to the non-unique nature of the inverse problem. The Euler deconvolution method was created to solve this issue, particularly for idealized sources (such as spheres and planar vertical dykes). Euler deconvolution has become widely used in potential-fi...
Magmatic rocks record ambient magnetic fields during cooling, preserving them for billions of years through thermoremanent magnetization (TRM). TRM accuracy depends on particle size, shape, magnetic properties, and the number of particles available to record the field. While traditionally interpreted via Neél’s single-domain theory, most particles...
Earth scientists can estimate the depth of certain rocks beneath Earth's surface by measuring the small disturbances that they cause in the Earth's gravity and magnetic fields. A popular method for this is Euler deconvolution, which is widely available in geoscience software and can be run quickly on a standard computer. Unfortunately, Euler deconv...
Paleomagnetic data is collected from bulk samples, containing a mixture of stable and unstable magnetic particles. Recently, magnetic microscopy techniques have allowed the examination of individual magnetic grains. However, accurately determining the magnetic moments of these grains is difficult and time‐consuming due to the inherent ambiguity of...
Paleomagnetic data are usually obtained from whole cylindric samples, where the signal results from the sum of magnetic moments from hundreds of thousands to millions of magnetic particles within the sample volume. This usually includes both stable and unstable remanence carriers.Recently, magnetic microscopy techniques allowed the investigation of...
Post-collisional reversely zoned plutons occurring in the Araçuaí belt frequently show basic cores enveloped by felsic rocks, with intense magma mingling/mixing features. The Venda Nova (VN) pluton presents, in addition to its mafic core composed of gabbronorites and surrounded by syenomonzonites, a narrow ring of charnockite and norite. The Venda...
The Cambrian Santa Angélica intrusive complex (SAIC - SE, Brazil), is composed of two lobes with concentric fabric and bull's eyes shapes, each lobe containing a mafic nuclei and granitic borders. It intruded during the post-collisional phase of the Araçuaí orogen (AO). Although SAIC'S internal structure is described as exclusively magmatic, promin...
Post-orogenic plutons are excellent recorders of the last stages of collapsing orogens. In the Neoproterozoic-Cambrian Araçuaí orogen (Brazilian Southeast), one of the Brasiliano orogenies (Western Gondwana), voluminous amounts of Cambrian magmatism crop out. The Venda Nova pluton (VN) is located at the southern portion of the AO, exhibiting a nori...
The Araçuaí Orogen (AO) has been interpreted as a Neoproterozoic example of a large, “hot” orogen, based on a broad zone (250 km) of midcrustal metamorphic assemblages with a long, 70‐Myr history of crustal melting and episodic magmatism throughout the late Neoproterozoic and earliest Paleozoic. Here, we present results of U‐Pb sensitive high‐resou...
This dataset is part of the work "Magnetic fabric and geochronology of a Cambrian “isotropic” pluton in the Neoproterozoic Araçuaí orogen". Such work presents results of an integration of U-Pb SHRIMP and a detailed anisotropy of magnetic susceptibility (AMS) study to determine the emplacement mechanisms of the Santa Angélica. This pluton was emplac...
A prospecção de minérios para suprir múltiplas necessidades da sociedade e setores da economia, como o manganês, extremamente necessário na indústria siderúrgica brasileira, tem sido um fator fundamental para promover o desenvolvimento de métodos de prospecção geológica. Depósitos supergênicos são caracterizados por parâmetros relativamente mensurá...
