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Lontras Shale

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Journal Article
Published: 01 January 2014
Journal of Paleontology (2014) 88 (1): 171–178.
...L. D. Mouro; A. C. S. Fernandes; D. W. Rogerio; V. M. Fonseca Abstract The first-described articulated Permian sponge from Brazil, representing Hexactinellida, has been recovered from the Lontras Shale in the Campáleo outcrop (Permian, Asselian–Sakmarian), Rio do Sul Formation, Mafra, in southern...
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Published: 01 January 2008
DOI: 10.1130/2008.2441(08)
... at the Itararé–Rio Bonito boundary, both of which represent regional sequence boundaries; and (3) the transition between palynozones Crucisaccites monoletus and Vittatina costabilis is associated with the maximum flooding surface represented by the marine Lontras Shale, a regional marker bed located...
Journal Article
Journal: PALAIOS
Published: 03 May 2023
PALAIOS (2023) 38 (4): 188–209.
... is a mm-wide meandering groove resembling a simple locomotion trail of a small vagile benthic metazoan. Microbial surface textures (i.e., “elephant skin” and Kinneyia-type wrinkles) were mainly observed in heterolithic deposits, usually at the interface between sandstone and siltstone/shale. On the other...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1991
AAPG Bulletin (1991) 75 (1): 62–85.
... exploration and mapping of the Itararé are greatly aided by the recognition of three recently defined and described formations and four members, which are traceable for hundreds of kilometers. These units belong to three major glacial cycles in which the pebbly mudstones and shales are seals and glacially...
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Series: Geological Society, London, Special Publications
Published: 06 June 2023
DOI: 10.1144/SP535-2022-342
EISBN: 9781786205193
... ). Considering that the ages based on conodonts are more reliable and precise, it can be assumed that not only did the sedimentation of this unit start in the Gzhelian, but also the Vc Zone as well. This is a situation similar to that already reported above for the Vc Zone in the Lontras Shale...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 February 2007
AAPG Bulletin (2007) 91 (2): 151–160.
..., located in the Lontras Member. See Figure 1 for location. Based on biostratigraphic data and lithofacies equivalence, França et al. (1996) considered that Westphalian mudstones that crop out in southeastern Paraná state (Campo do Tenente shale) are time equivalent to the mud-rich interval...
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Journal Article
Journal: Palynology
Published: 01 January 2002
Palynology (2002) 26 (1): 135–165.
... the Lima block, northeast of Asunción (Text-Fig. 1 ). The predominant lithologies are sandstones and shales with a minor siltstone content. The three sub-basins will be treated in the following discussions. A total of 49 species were identified in the present study. Their stratigraphic ranges are given...
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Series: Geological Society, London, Special Publications
Published: 13 April 2022
DOI: 10.1144/SP512-2021-124
EISBN: 9781786205827
... in southern Africa ( Stollhofen et al. 2008 ), and (3) the deposition of widespread marine shales (e.g. the mid- to late Bashkirian Roncador Shale and the Kasimovian Lontras Shale) in the Paraná Basin, Brazil that are interpreted to record transgressions at the culmination of million-year-scale glacial...
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Series: Geological Society, London, Special Publications
Published: 01 January 2008
DOI: 10.1144/SP294.10
EISBN: 9781862395428
... Intrusive Suite Metagabbro Pb-evap. Zircon 817±5 207 Pb/ 206 Pb 6 Santa Luzia Granite Granodiorite Pb-evap. Zircon 655±24 207 Pb/ 206 Pb 7 Ramal do Lontra Granite Granodiorite Pb-evap. Zircon 549±5 207 Pb/ 206 Pb 8 Cantão Gneiss Granitic gneiss Rb–Sr Whole rock–biotite–K...
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