Rock Outcrop
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Geology, geochemistry and petrology of basalts from Paraná Continental Magmatic Province in the Araguari, Uberlândia, Uberaba and Sacramento regions, Minas Gerais state, Brazil
Abstract: This study covers the region between the cities of Sacramento and Araguari/Uberlândia (Minas Gerais State, Brazil), where basalt flows from the Paraná Continental Magmatic Province outcrop. The investigated rocks present tholeiitic signature, with high titanium content, and are classified as Pitanga magma-type. The preserved basalt thickness is b
Braz. J. Geol.. Publicado em: 22/02/2018
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2. Early Devonian (Late Emsian) shark fin remains (Chondrichthyes) from the Paraná Basin, southern Brazil
ABSTRACT We report on the pioneering discovery of Devonian fish remains in the Paraná Basin, which represents the southernmost record of fishes from that period in mainland South America. The material comes from an outcrop at the lower portion of the São Domingos Formation, within Sequence C of the Paraná-Apucarana sub-basin in Tibagi, State of Paraná. M
An. Acad. Bras. Ciênc.. Publicado em: 2017-03
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3. Litterfall dynamics in a iron-rich rock outcrop complex in the southeastern portion of the Iron Quadrangle of Brazil
Ecosystems on cangas (duricrust) present considerable heterogeneity of habitats due to microtopographic variations, soil accumulation and a variety of plant functional groups. Therefore, spatial and temporal ecosystem processes such as litterfall are to be expected to be large, and the absence of a level of productivity represents all the facets of iron-rich
Acta Bot. Bras.. Publicado em: 2013-06
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4. MONITORING THE FLUCTUATION OF THE WATER TABLE IN UNCONFINED AQUIFERS FOR EVALUATION OF THE POTENTIAL RECHARGE IN OUTCROP ZONE OF THE GUARANI AQUIFER SYSTEM IN CACEQUI - RS/BR / MONITORAMENTO DA FLUTUAÇÃO DOS NÍVEIS DE ÁGUA EM AQUÍFEROS FREÁTICOS PARA AVALIAÇÃO DO POTENCIAL DE RECARGA EM ÁREA DE AFLORAMENTO DO SISTEMA AQUÍFERO GUARANI EM CACEQUI - RS
This research aimed to estimate the recharge and groundwater water table fluctuation in areas with withdrawals of groundwater and surface water related to the variation of groundwater levels and rainfall events. The two areas of study was inserted within the Cacequi Municipality, which is located in the Rio Grande do Sul state, southwestern Brazil, in the Gu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/03/2012
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5. Influence of edaphic variables on the floristic composition and structure of the tree-shrub vegetation in typical and rocky outcrop cerrado areas in Serra Negra, Goiás State, Brazil
The present study analyzed the influence of edaphic variables on the floristic compositions and structures of the arboreal and shrub vegetation of typical cerrado (TC) and rocky outcrop cerrado (RC) communities in the Serra Negra mountain range in Piranhas Municipality, Goiás State, Brazil. Ten 20×50m plots were established in each community, and all indiv
Braz. J. Bot.. Publicado em: 2012
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6. CaracterizaÃÃo tecnolÃgica e radiomÃtrica de um diabÃsio da regiÃo de ApuiarÃs - CE / Technological characterization and radiometric a region of diabase ApuiarÃs - CE
This paper presents the technological and mineralogical characteristics of a diabase, which outcrop in the form of dike is located in the district CanafÃstula in ApuiarÃs - CE. In order to assess their qualities for application as ornamental, were carried out technological tests of fitness levels and physical-mechanical, based on standards from ABNT, as we
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/01/2011
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7. Características estruturais, fitossociológicas e produtividade de um campo sobre basalto supercial / Phytosociological, structural and productivity characteristics of a native pasture on basaltic litolic soil
Few studies had adequately described the characteristics and productive capacity of natural grasslands associated to shallow basaltic soils in Pampa Biome. This study was carried out on natural pasture at Santana do Livramento municipality, in the Campanha region of Rio Grande do Sul, Brazil aiming to describe their floristic and structural diversity and to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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8. Uma peculiar tafocenose controlada por ação biogênica no triássico médio do Rio Grande do Sul, Brasil
We present here an outcrop with a peculiar fossil assemblage, including a distinct taphocoenosis in comparison to other fossiliferous outcrops of the Santa Maria Formation (Triassic, Paraná Basin). Fossil concentration in this outcrop is made-up of herbivorous non-mammalian cynodonts (Synapsida, Therapsida) only, tentatively assigned to Massetognathus. The
Publicado em: 2010
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9. CALFRAC: Programa que quantifica o processo de cristalização fracionada e sua aplicação ao estudo de soleiras da Bacia do Paraná (Estado do Paraná) / CALFRAC: Program to quantify fractional crystallization processes and your application in the study Paraná Basin sills (Paraná).
CALFRAC is a computer program written in C++ programming language developed to quantify fractional crystallization processes in igneous systems. Major, minor and trace element concentrations are used as input for calculations. The new algorithm enhances and makes the program more efficient than those published in the literature. Besides it is capable to auto
Publicado em: 2010
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10. Razões isotópicas 87Rb/86Sr, 87Sr/86Sr e 143Nd/144Nd como traçadores de proveniência de rochas sedimentares siliclásticas: exemplos no Grupo Camaquã(Paleozóico interior; RS, Brasil)
The Rb-Sr and Sm-Nd isotopic systems are ideal in constraining the provenance of fine-grained clastic rocks. This is particularly true for continental, fluvio-lacustrine, sedimentary units deposited under semi-arid climate conditions, where mechanical desintegration of source rocks dominates the weathering processes. Three sets of red-colored, continental si
Publicado em: 2010
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11. Rock outcrop floristic in Serra do Cipó, MG / Florística de afloramentos rochosos na Serra do Cipó, MG
Diversos estudos florísticos vem sendo realizados nos campos rupestres; entretanto, a vegetação dos afloramentos rochosos é pouco estudada, pois a maior parte das pesquisas tem focado áreas campestres. Nessa perspectiva, um estudo florístico foi realizado em sete afloramentos rochosos na Serra do Cipó, no estado de Minas Gerais. Com base em uma imagem
Publicado em: 2009
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12. Radioatividade de rochas provenientes das formações geológicas pertencentes à bacia hidrográfica do Rio Tibagi
This work is a study of the 40K and the 238U and 232Th series radioactivity in rocks measured with high resolution gamma ray spectrometry. The rocks were taken from the geologic formations in the region of the Tibagi river hydrographic basin. The course of this river cuts through the Paleozoic and Mesozoic stratigraphic sequences of the Paraná sedimentary b
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/08/2008