Straited surfaces and related features, developed by the gondwana ice sheets (state of Paraná, Brazil)

Bigarella, João José; Salamuni, Riad; Fuck, Reinhardt A.

doi:10.1016/0031-0182(67)90019-3

Cited by 38 publications

(29 citation statements)

References 3 publications

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“…5B), oriented towards 358º, and are covered by sand-rich massive diamictites. Crescentic fractures reported by Bigarella et al (1967) indicate paleo ice-flow direction towards the north. Approximately 7 km away from this locality, Vesely (2006) found another striated pavement on the same substrate with the same orientation, which suggest a regional trend of glacier flow in this sector of the basin.…”

Section: Striated Pavementsmentioning

confidence: 90%

“…Bigarella et al (1967) described a series of striated pavements developed in Devonian sandstones of the Furnas Formation in southeastern Paraná State. In the Witmarsum locality, striations, grooves and ridges are on a flat surface (Fig.…”

Section: Striated Pavementsmentioning

confidence: 99%

“…An ice source located east of the Paraná Basin is well supported by the moutonnée of Salto (Almeida 1948), subglacial landforms in the Paraná state (Bigarella et al 1967, Trosdtorf et al 2005, the occurrence at Engenheiro Maia (Caetano-Chang et al 1990) and the striated surfaces found on the Precambrian basement in Santa Catarina state (Barbosa 1940, Carvalho 1940, Rocha-Campos et al 1988, Puigdomenech et al 2014. Nevertheless, localities in the southern Paraná state (southern flank of the Ponta Grossa arch) have a different orientation (N-S) when compared to the other localities, which show a consistent NW trend (Fig.…”

Section: Implications For Paleogeographymentioning

confidence: 99%

“…Subsequently, several types of landforms were documented (e.g. Almeida 1948, Bigarella et al 1967, Rocha-Campos et al 1988, Gesicki et al 2002, Vesely & Assine 2002 as indicated in Figure 1 and Table 1. Evaluating the various types of landforms associated with strata of the Itararé Group will contribute to better resolve the size and extent of glaciation that influenced deposition in the Paraná Basin during the Carboniferous and Permian.…”

Section: Introductionmentioning

confidence: 99%

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A review on late Paleozoic ice-related erosional landforms in the Paraná Basin: origin and paleogeographical implications

2016

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ABSTRACT:The Late Paleozoic Ice Age is recorded in the Paraná Basin as glacial deposits, deformational features and ice-related erosional landforms of the Itararé Group. Erosional landforms are often employed to build paleogeographic models that depict the location of ice masses and paleo ice-flow directions. This paper provides a review of the literature and new data on micro-to meso-scale ice-related, erosional landforms of the Paraná Basin. Examined landforms can be placed into four broad categories based on their mode of origin. Subglacial landforms on rigid substrates occur on the Precambrian basement or on older units in the Paraná Basin. They include streamlined landforms and striated pavements formed by abrasion and/or plucking beneath advancing glaciers. Subglacial landforms on soft beds are intraformational surfaces generated by erosion and deformation of unconsolidated deposits when overridden by glaciers. Ice-keel scour marks are soft-sediment striated/grooved landforms developed by the scouring of free-floating ice masses on underlying sediments. Striated clast pavements are horizons containing aligned clasts that are abraded subglacially due to the advance of glaciers on unconsolidated deposits. Only those erosional landforms formed subglacially can be used as reliable paleo ice-flow indicators. Based on these data, the paleogeography of the Paraná Basin during the Late Paleozoic Ice Age fits into a model of several glacial lobes derived from topographically-controlled ice spreading centers located around the basin instead of a single continental ice sheet. KEYWORDS:Late Paleozoic Ice Age; Itararé Group; glacial erosion; paleogeography. RESUMO: A Era Glacial Neopaleozoica está registrada na Bacia do Paraná através da sucessão sedimentar do Grupo Itararé e unidades correlatas, bem como por feições glaciotectônicas e formas de leito erosivas relacionadas à ação do gelo. Formas de leito erosivas são comumente utilizadas em análises paleogeográficas visando evidenciar o sentido de fluxo de geleiras e localizar antigos centros irradiadores de gelo. Neste trabalho é apresentada uma revisão da literatura e novos dados sobre formas de leito erosivas de micro a mesoescala

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Section: Striated Pavementsmentioning

confidence: 90%

Section: Striated Pavementsmentioning

confidence: 99%

Section: Implications For Paleogeographymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A review on late Paleozoic ice-related erosional landforms in the Paraná Basin: origin and paleogeographical implications

2016

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“…Existem na colônia estrias impressas em rochas tanto da Formação Furnas quanto do Grupo Itararé. Não há consenso sobre o processo formador das estrias, admitindo-se ora geleiras de base seca SALAMUNI;FUCK, 1967;TROSDTORF JÚNIOR, 2002) Como haviam desenvolvido técnicas agrícolas avançadas, a imperatriz russa Catarina, a Grande, os cooptou para fazerem parte do projeto de povoamento das estepes ucranianas recém adquiridas pela Rússia. Nesse país irão encontrar uma série de privilégios que garantiram a manutenção da identidade menonita alemã, sem ocorrer uma absorção completa da cultura russa, ocorrendo, inclusive, um estreitamento dos laços culturais com a Alemanha, cujo fim único era manter a "preservação da religião e da cultura alemã".…”

Section: Grupo Itararéunclassified

Influência geoambiental em mudanças de atitudes e econômicas na colônia Witmarsum, Paraná

Paccola

Melo

2012

Bol. Geogr.

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A Colônia Witmarsum, situada nos Campos Gerais do Paraná, suscita reflexões acerca da trajetória cultural do povo menonita e de restrições e oportunidades geoambientais. Originalmente agricultores, no Brasil obrigados a dedicar-se à pecuária e culturalmente diferenciados, hoje os menonitas discutem a possibilidade de abrir a colônia para o turismo sustentável (ecoturismo, geoturismo, etnoturismo, turismo rural) como forma de suplementação econômica. Avaliando tal possibilidade, o estudo realizado aborda a questão dos atributos naturais e culturais disponíveis no local, a organização interna e as diretrizes formais para implantação do turismo sustentável. No que se refere aos atributos naturais, dentro das fronteiras da colônia localiza-se pavimento de estrias glaciais da Era Paleozóica, patrimônio já transformado em monumento geológico com infra-estrutura de visitação. Quanto aos atributos culturais, tanto o aspecto social da vida cotidiana quanto as mais organizadas estruturas econômicas da colônia menonita respeitam a orientação religiosa tradicional, sendo esse um traço valorizado e preservado. Tendo em vista as características culturais e geoambientais de Witmarsum o estudo conclui pela possibilidade de se estabelecer uma atividade econômica de pequeno impacto, desde que respeitando os conceitos e procedimentos atuais de preservação ambiental e cultural já praticados na colônia. Tal atividade teria maior possibilidade de êxito econômico, e ao mesmo tempo maiores riscos quanto à identidade cultural da colônia, se integrada a projetos de roteiros turísticos propostos para a região. Palavras-chave:Menonitas. Turismo sustentável. Transposição cultural. ABSTRACTThe Witmarsum Settlement, situated in the Campos Gerais Region, State of Paraná, raises reflections concerning the cultural trajectory of the mennonite people and geoenvironmental constraints and opportunities. Originally farming, in Brazil obligated to dedicate to dairy cattle and culturally differentiated, today the mennonites argue the possibility of to open the settlement for sustainable tourism (ecotourism, geotourism, etnotourism, rural tourism) as an economic supplement. Evaluating such possibility, this study discusses the natural and cultural attributes in the location, the internal organization in the settlement and the formal guidelines for sustainable tourism implantation. About the natural attributes, in the settlement territory there are glacial Palaeozoic striation, patrimony already transformed in a geological monument with visitation infrastructure. About the cultural attributes, the mennonite everyday life and economic structures are organized respecting the traditional religious orientation, being this a valorized and preserved cultural aspect. Considering Witmarsum's cultural and geoenvironmental characteristics the study concludes by the viability of a small impact economic activity, since respecting the environmental and cultural preservation concepts and current procedures already practiced in the settlement. Such activity should hav...

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Geology of the Amazon and Parnaiba Basins

Bigarella

1973

The South Atlantic

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Straited surfaces and related features, developed by the gondwana ice sheets (state of Paraná, Brazil)

Cited by 38 publications

References 3 publications

A review on late Paleozoic ice-related erosional landforms in the Paraná Basin: origin and paleogeographical implications

A review on late Paleozoic ice-related erosional landforms in the Paraná Basin: origin and paleogeographical implications

Influência geoambiental em mudanças de atitudes e econômicas na colônia Witmarsum, Paraná

Geology of the Amazon and Parnaiba Basins

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