https://ri.ufs.br/jspui/handle/riufs/22547 2026-07-30T13:39:52Z 2026-07-30T13:39:52Z Lisboa, Vinícius Anselmo Carvalho Simões, Caroline Bomfim Santana Rios, Débora Correia Conceição, Herbet https://ri.ufs.br/jspui/handle/riufs/25519 2026-07-13T18:34:14Z 2016-09-01T00:00:00Z

Título: Potencial ornamental do Maciço Glória Norte, Domínio Macururé, Sistema Orogênico Sergipano Autor(es): Lisboa, Vinícius Anselmo Carvalho; Simões, Caroline Bomfim Santana; Rios, Débora Correia; Conceição, Herbet Abstract: “Ornamental granites” correspond to a class of dimension stones that includes both igneous and metamorphic rocks. Thisreflects the informality with which the sector deals with their characterization and the independence from theoretical and academic concepts that define and classify rocks, as the acceptance of a rock type in the ornamental stone market depends mainly on aesthetic and physical factors, rather than its mineralogical, textural and structural properties. This work focuses on the evaluation of the potential use of the porphyritic facies (MP) of the Gloria Norte Granitic Massif (MGN – State of Sergipe, NE Brazil) as dimension stone. In such evaluation, petrographic studies in association with the application of the Geological and Economical Potential Index (IAEG) are taken into account. Actually, IAEG has been increasingly used in Brazil as it represents a real possibility to qualify and quantify a series of criteria that involve not only field and market aspects, but also petrographical information regarding mineralogy, shapes, sizes and contact relationships between rock minerals and their modifications due to alteration and deformation. The IAEG values obtained for MGN range from 54 to 63. In turn, the determination of some physical parameters obtained from petrographical studies reveals the absence of expressive fractures and/or faults, weakly altered feldspar, and low oxide and sulfide contents, which aggregates value to the use of this material as ornamental stone. The results obtained from the association of IAEG with petrographical and structural parameters show a medium to high ornamental potential for these rocks, suggesting that they can be used in building, in special the ones from the MP facies. We emphasize, however, that the commercial use of a rock requires application of technological tests, market evaluation, and effort from the authorities to promote the creation of a productive chain or arrangement in the State of Sergipe, in order to make the exploitation of rocks possible for their use as dimension stones.

2016-09-01T00:00:00Z Conceição, Joane Almeida da Rosa, Maria de Lourdes da Silva Conceição, Herbet https://ri.ufs.br/jspui/handle/riufs/25197 2026-07-06T19:12:35Z 2016-03-01T00:00:00Z

Título: Sienogranitos leucocráticos do Domínio Macururé, Sistema Orogênico Sergipano, Nordeste do Brasil: Stock Glória Sul Autor(es): Conceição, Joane Almeida da; Rosa, Maria de Lourdes da Silva; Conceição, Herbet Abstract: The Glória Sul Stock (SGS) (41 km2 ) is a roundshaped pluton, which intrudes the metasediments of the central area of the Macururé Domain, in the Sergipano Orogenic System (SOS). The stock encompasses a number of leucocratic syenogranites, including biotite syenogranite, muscovite-biotite bearing syenogranite and muscovite syenogranite. Mafic microgranular enclaves with syenitic composition are abundant in the biotite syenogranites but very rare in the muscovite-biotite bearing syenogranites. The syenogranites are predominantly metaluminous although the more evolved rocks show a peraluminous character. They can be classified as I-type and high-K calc-alkaline rocks. The syenitic enclaves are metaluminous and show shoshonitic geochemical characteristics. Geochemical modeling suggests that petrological diversity may be explained by considering mixing between peraluminous magma with ca. 73% SiO2 and a mafic shoshonitic magma with ca. 56% SiO2 . Trace elements contents (Ba = 1,179 – 319 ppm; Rb = 351 – 55.3 ppm; Y = 16.7 – 1.6 ppm) are higher in the enclaves than in the granites. REE contents range from 38.58 – 299.21 ppm; LaN/YbN = 12.57 – 137.22 and Eu/Eu* = 0.72 – 1.94. The present data indicates that granitogenesis in the Macururé Domain (DM) is complex as well as that the widespread leucocratic syenogranites are post-tectonic, having been generated through interaction between peraluminous rhyolitic magmas and mantellic shoshonitic magmas.

2016-03-01T00:00:00Z Oliveira, Josevânia de Manso, Cynthia Lara de Castro Andrade, Edilma de Jesus https://ri.ufs.br/jspui/handle/riufs/24303 2026-07-14T15:10:56Z 2014-12-01T00:00:00Z

Título: Distribuição dos equinoides na Formação Jandaíra Autor(es): Oliveira, Josevânia de; Manso, Cynthia Lara de Castro; Andrade, Edilma de Jesus Abstract: This paper discuss the occurrence of the regular echinoid species Goniopygus durandi, Rosadosoma riograndensis (Maury 1924), Phymosoma major (Coquand 1862), and the irregular echinoids Petalobrissus setifensis (Cotteau 1866), P. cubensis (Weisbord 1934), Mecaster fourneli (Agassiz & Desor 1847), M. texanus (Roemer 1852) and Mecaster sp in Camurim-01, Gangorrinha-2, Gov. Dix-Sept Rosado-2, Gov. Dix-Sept Rosado-6, Estreito-1 and Frei Antonio-3, which are fossiliferous localities of Jandaíra Formation, Potiguar Basin. The sample comprises 228 specimens that were collected in 2003 and 2011. Regarding the relative abundance of the echinoid species present in Jandaíra Formation limestones, it was observed that irregular echinoids appear in a large number compared to the regular ones. Camurim-1 and Gangorrinha-2 localities stood out for having the largest abundance of species, both endocyclic and exocyclic. In Gov. Dix-Sept Rosado-2 and Gov. Dix-Sept Rosado-6 the specimens of genus Mecaster were the only ones observed. Estreito-1 and Frei Antonio-3 had the smallest occurrence, where in the former the occurrence of regular species was observed and in the latter the occurrence of irregular ones. This occurrence pattern could be related to paleoenvironmental conditions and the species’ lifestyle, because the localities with the largest biodiversity and abundance are deposited near the edge of the basin, such as Camurim-1 and Gangorrinha-2.

2014-12-01T00:00:00Z Aragão, Ricardo de Almeida, José Antonio Pacheco de Figueiredo, Eduardo Eneas de Srinivasan, Vajapeyam Srirangachar https://ri.ufs.br/jspui/handle/riufs/22920 2025-08-15T18:13:17Z 2011-07-01T00:00:00Z

Título: Mapeamento do potencial de erosão laminar na Bacia do Rio Japaratuba, SE, via SIG Autor(es): Aragão, Ricardo de; Almeida, José Antonio Pacheco de; Figueiredo, Eduardo Eneas de; Srinivasan, Vajapeyam Srirangachar Abstract: Soil erosion is a natural phenomenon that reduces soil fertility and causes a great impact on agricultural areas. Laminar erosion is characterized by the removal of the top soil fairly uniformly as well as its nutrients, which is accelerated by human activities. To minimize the impacts it is necessary to adopt an adequate soil management that takes into account the type of the soil, relief, and vegetation cover. The soil management can be aided by mapping the erosive potential of a region using GIS tools. In this work, the technique that was used for mapping the erosive potential in the Japaratuba River Basin (1685 km2 ) located in the State of Sergipe is presented. The results show that 48.71% of the basin area lie within medium and high erosive potentials zones, suggesting the inadequate land use for the soil types and relief within the basin.

2011-07-01T00:00:00Z