Compartimentação E Evolução Tectônica Da Bacia Do Paraná

Fúlfaro, Vicente José; Saad, Antonio Roberto; SANTOS, M. V.; VIANNA, R. B.

doi:10.25249/0375-7536.1982124590611

Cited by 76 publications

(52 citation statements)

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“…The usual strikes of these struc tures are NW, NE, N-S, and E-W, forming a huge structural mosaic, dividing the entire basin into "boxes" in which the stratigraphic column can vary quite widely from one area to another. In Brazil, this structural framework is reasonably well known and used in petroleum evaluations of this basin (Fulfaro et al, 1982). The same can be said regarding the situation in Uruguay, where anticlines (bird-wing struc tures) and pinchouts against the shoulders of the central arches are explored for a prospective oil play (Goso and de Santa Ana, 1994).…”

Section: Hydrocarbonsmentioning

confidence: 96%

“…Previously, more than 200,000 km 2 belonging to the Chaco Paraná Basin in Argentina also were believed to be a part of the Paraná Basin, but this area was considered a different basin by Zalán et al (1990). The Paraná is a cratonic interior basin with a complex history and a controversial origin, believed to be related to the installation of a rift complex within the Upper Proterozoic basement in the Early Paleo zoic followed by thermal subsidence during the Late Paleozoic (Fulfaro et al, 1982). Very many papers have been published on this basin since 1827, but most are related to its eastern margin and have specific geological or paleontological objectives.…”

Section: Geologic Settingmentioning

confidence: 99%

“…Regard less of the scarce existing data in Paraguay obscuring the petroleum evaluation picture, it is in this country that one of the most important structural features of the Paraná Basin is found-an aulacogen. The San Pedro downfaulted block (Bajo de San Pedro) in east-cen tral Paraguay contains more than 6000 m of sediments ranging from at least Early Silurian to Jurassic in age, and was the former sea connection between the proto-Pacific ocean and the cratonic Paraná Basin interior (Fulfaro et al, 1982;Fulfaro, 1995).…”

Section: Hydrocarbonsmentioning

confidence: 99%

“…The Paraná Basin's eastern margin initiated vertical movements that strongly influenced the basin interior, resulting in faulting of the basalts and reorganization of the previous structural framework as a result of the superimposition of this rift phase. This struc tural event was described in detail by Fulfaro et al (1982).…”

Section: Early Cretaceousmentioning

confidence: 99%

“…Although commercial oil or gas occurrences have not yet been found in the Parana Basin, the common oil shows in several layers in the stratigraphic pile, in practically all the existing drillholes, the scarce number of these wells (no more than 140 wells for an area of 1,200,000 km 2 ), and the low geophysical net (23,830 km of seismic lines for the same area) do not, under any circum stances, limit the potential of hydrocarbon exploration. In addition to the thick basaltic cover, the superposition of the Mesozoic rift phase above the previous volcanic-sedimentary pile, allowing the basin to be classified as a cratonic 2A complex (Fulfaro et al, 1982), increases the possibility of a future commercial oil or gas occurrence. Furthermore, the pre dominance of Type-Ill organic matter in the possible source rocks suggests that this basin is highly prospective for gas exploration.…”

Section: Hydrocarbonsmentioning

confidence: 99%

See 4 more Smart Citations

Paraná Basin: Mineral Resource Potentials in Brazil, Uruguay, and Paraguay

Fúlfaro

Saad

Perinotto

et al. 1997

International Geology Review

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Section: Hydrocarbonsmentioning

confidence: 96%

Section: Geologic Settingmentioning

confidence: 99%

Section: Hydrocarbonsmentioning

confidence: 99%

Section: Early Cretaceousmentioning

confidence: 99%

Section: Hydrocarbonsmentioning

confidence: 99%

See 3 more Smart Citations

Paraná Basin: Mineral Resource Potentials in Brazil, Uruguay, and Paraguay

Fúlfaro

Saad

Perinotto

et al. 1997

International Geology Review

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Imaging three‐dimensional crustal conductivity structures reflecting continental flood basalt effects hidden beneath thick intracratonic sedimentary basin

et al. 2015

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A large-scale array of long-period magnetic data and a deep-probing magnetotelluric profile were recorded in the intracratonic Paraná sedimentary basin in central eastern South America, which presents a thick and extensive sedimentary-magmatic sequence that allows its basement to be investigated only by indirect methods. Integration of the results from both methods showed that the crust beneath the basin presents several quasi-linear highly conductive channeled zones with limited lateral extent, in coincidence with some of the main tectonic structures recognized at the surface, and a moderate but pervasive lithosphere conductivity enhancement beneath its central part. Upward movement of CO 2 -bearing volatiles and magmas precipitating highly conducting mineral phases along discrete subvertical fault zones that served as feeder conduits for Early Cretaceous voluminous continental flood basalts was a likely process responsible for the localized conductivity enhancements. Correlation between some of the linear conductive zones and elongated magnetic anomalies and between the maximum depth occurrence of most of these conductive anomalies and the Curie depth at which crustal rocks lose their magnetism gives strong support to interconnected iron oxides (especially magnetite) and iron sulfides (such as pyrrhotite) as the main conductive sources. The moderate bulk conductivity increase in the crust and upper mantle beneath the central part of the basin is unexpected for a postulated cratonic basement and is tentatively associated with impregnation of the lithosphere by conducting minerals related either to widespread tectonic events in the Ordovician or Late Precambrian or to dispersed magmatic residues of an Early Cretaceous magma differentiation contaminating the entire lithosphere.

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