Results 161 to 170 of about 665,702 (201)

Analysis of the Mineralogical Composition of Shales - Case Study Araripe Basin

Proceedings, 2017
Summary The Araripe Basin is the largest basin in the northeastern interior, located in the border region of the states of Ceara, Pernambuco and Piaui, and has enormous influence on the climate and the local economy. Well known for its paleontological occurrences, this basin has also become the target of research aimed at knowing the potential of its ...
C. Dias, J. Soares, L. Landau, A. Vidal, I. Borges   +4 more
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A eudicot leaf from the Lower Cretaceous (Aptian, Araripe Basin) Crato Konservat‐Lagerstätte

American Journal of Botany, 2021
AbstractPremiseThe Crato Konservat‐Lagerstätte in Brazil preserves an exceptionally rich assemblage of plant macrofossils from the Early Cretaceous (late Aptian), including rare early angiosperm fossils related to Nymphaeales, monocots, and magnoliids, and a variety of angiosperms of uncertain affinities.
Edlley M. Pessoa, Alexandre C. Ribeiro, Nathan A. Jud   +2 more
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Plant–Arthropod Interaction in the Early Cretaceous (Berriasian) of the Araripe Basin, Brazil

Journal of South American Earth Sciences, 2009
Abstract Plant–arthropod interactions provide the first relevant data for addressing evidence of phytophagy for an assemblage of coniferous silicified woods from the pre-rift phase in the Araripe Basin, Brazil. A complex system of borings, sometimes filled with small, oval to hexagonal coprolites, allow inferences to be made about the activities of ...
Etiene Fabbrin Pires, Margot Guerra Sommer   +1 more
exaly   +2 more sources

Digital Rock Physics from Santana Formation, Araripe Basin

Proceedings, 2016
X ray digital rock physics is a nondestructive technique, that enable the rock physic properties quantification and characterization. The method is based on the x ray absorption from each material, depending on the material density and the chemical components.
A. Vidal, J. Soares, L. Medeiros, I. Borges, G. Raposo, A. Barboza   +5 more
openaire   +1 more source

The Araripe Basin in NE Brazil: An Intracontinental Graben Inverted to a High-Standing Horst

Tectonophysics, 2014
Abstract The Mesozoic sediments of the Araripe Basin peak at ca. 1000 m, more than 500 m above the host Precambrian basement. This means that an intracontinental graben has been inverted to a topographically high-standing horst, which raises four fundamental questions: (1) Where are the inversion structures? (2) What is the age of the inversion?
Fernando Ornelas Marques, David L. de Castro, F H R Bezerra   +2 more
exaly   +2 more sources

A lizard from the Early Cretaceous Crato Formation, Araripe Basin, Brazil

Neues Jahrbuch für Geologie und Paläontologie - Monatshefte, 1998
A lizard from the Early Cretaceous Crato Formation of Brazil is the first from this Formation and one of the earliest recorded lizards from South America. The specimen represents a very young individual, probably recently hatched. The lower jaws are characterised by an elongated dorsal ramus of the dentary which replaces the surangular along much of ...
Susan E. Evans, Yoshitaka Yabumoto
openaire   +1 more source

Natural Fracture Characterization in Aptian Carbonates, Araripe Basin, NE Brazil

Proceedings, 2014
This paper addresses fracture characterization in an Aptian laminated limestone, the Crato Formation, cropping out in the Araripe Basin (NE, Brazil) using a scanline technique. This unit has been used as a geological analogue of buried naturally fractured carbonate reservoirs.
T.S. Miranda, J.A. Barbosa, J.F.W. Gale, R. Marrett, I. Gomes, V.H.M.L. Neumann, G.C. Matos, O.J. Correia, M.L. Alencar   +8 more
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Fire in the paradise: evidence of repeated palaeo-wildfires from the Araripe Fossil Lagerstätte (Araripe Basin, Aptian-Albian), Northeast Brazil

Palaeobiodiversity and Palaeoenvironments, 2019
Reports on Cretaceous charcoals are relatively common on a global scale and have been increasing in recent years. Fossil charcoal from the Early Cretaceous mostly belongs to conifers (and other gymnosperms) and ferns whereas angiosperms become more common only during the Late Cretaceous.
Flaviana Jorge de Lima, Etiene Fabbrin Pires, André Jasper, Dieter Uhl, Antônio Álamo Feitosa Saraiva, Juliana Manso Sayão   +5 more
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Petrophysics and Mineralogy of Black Shales from the Araripe Basin – CE

19th Congress of the Brazilian Geophysical Society - Proceedings
A new scenario for the expansion of the global energy matrix has been emerging with exploration and production of unconventional resources in rocks whose petrophysical characteristics do not allow extraction by traditional methods. Black shales are part of this type of reservoir and exhibit high hydrocarbon generation potential, although their ...
José Agnelo Soares, Anne Beatrice Guedes Sobrinho, Juliana Targino Batista, Mariana Laiane Soares Dutra, Gabriel Ferreira Viana de Lima, Jaquelynne Cássia de Amorim   +5 more
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Petrophysics and Petrography of Aptian Tight Carbonate Reservoir, Araripe Basin, NE Brazil

78th EAGE Conference and Exhibition 2016, 2016
In recent decades, the exploitation of hydrocarbon reserves in carbonate reservoirs has motivated increasing numbers of investigations into their petrophysical characteristics due to their importance in fluid flow predictions. For tight reservoirs that are mainly composed of carbonate and fine-grained rocks, the determination of the petrophysical and ...
T. Miranda, J.A. Barbosa, I.F. Gomes, A. Soares, R.F.V.C. Santos, G.C. Matos, E.A. McKinnon, V.H.M.L. Neumann, R.A. Marrett   +8 more
openaire   +1 more source