Calcareous Rock
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Stratigraphy and tectonic setting of the Barriga Negra Formation in Uruguay: an update
Abstract The aim of this work is to propose a new stratigraphic scheme of the Barriga Negra Formation, in order to solve the controversies in one of the most discussed units of Uruguay. Here, we introduce a new map (unmodified since 1984) and amend the stratigraphic profile for the Barriga Negra Formation, establishing the correct sequence, order and thickne
Braz. J. Geol.. Publicado em: 08/04/2019
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2. The Cogollo Group and the oceanic anoxic events 1a and 1b, Maracaibo basin, Venezuela
ABSTRACTCarbonates of Cogollo Group (Apón, Lisure and Maraca formations) constitute the broader calcareous platform system originated during Aptian and Albian of Cretaceous in north-western South America, Maracaibo Basin, Venezuela. On the shallow shelf, a variety of calcareous sedimentary facies were deposited during marine transgressive and regressive cyc
Braz. J. Geol.. Publicado em: 2015-08
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3. Estratigrafia química (COT, delta13C, delta18O) e nanofósseis calcários na passagem Pliensbaquiano-Toarciano no perfil de Peniche (Portugal): resultados preliminares
The marl-limestone succession that encompasses the Pliensbachian–Toarcian Stage Boundary (Lower Jurassic) and crops out at Peniche (Lusitanian Basin, Portugal), was chosen as one of the candidates for the establishment of Toarcian GSSP. Chemostratigraphy analyses, of the Upper Pliensbachian (spinatum Zone)-Lower Toarcian (levisoni p.p. Zone) portion, were
Publicado em: 2010
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4. Estado da arte na alterabilidade de placas pÃtreas: estudo de casos na regiÃo litorÃnea do Recife â PE
The importance of ornamental rocks in architecture is historical; either to the internal areas or to the external ones. Thus, in this study, covering alterability and durability regarding with stony plates in located land external faÃades in the sea shore of Recife are discussed. The civil construction industry uses, in workmanship, the most varied types of
Publicado em: 2008
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5. Radiossensibilidade gama de Cladonia substellata Vainio (lÃquen) e o conseqÃente efeito sobre rochas calcÃrias / Gamma radiosensibility of Cladonia substellata vainio (lichen) and the consequent chelating effect on calcareous rocks
Soil is an unconsolidated surface that recovers the rocks and maintains animal and plant life on Earth. It is formed from climatic and biotic relationship, modified by topography that acts on original material, over a long period of time. Concerning biotic activities, one may emphasize that performed by lichens, which allow the succession of rocky substratum
Publicado em: 2006
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6. Increased Phosphorus Uptake by Wheat and Field Beans Inoculated with a Phosphorus-Solubilizing Penicillium bilaji Strain and with Vesicular-Arbuscular Mycorrhizal Fungi
Greenhouse and field experiments were conducted to test the effect of a P-solubilizing isolate of Penicillium bilaji on the availability of Idaho rock phosphate (RP) in a calcareous soil. Under controlled greenhouse conditions, inoculation of soils with P. bilaji along with RP at 45 μg of P per g of soil resulted in plant dry matter production and P uptake