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A MIDDLE PERMIAN (ROADIAN) LUNGFISH AESTIVATION BURROW FROM THE RIO DO RASTO FORMATION (PARANÁ BASIN, BRAZIL) AND ASSOCIATED U-Pb DATING

2018; Society for Sedimentary Geology; Volume: 33; Issue: 2 Linguagem: Inglês

10.2110/palo.2017.050

1938-5323

Heitor Francischini, Paula Dentzien‐Dias, Margót Guerra-Sommer, Rualdo Menegat, João Orestes Schneider Santos, Joseline Manfroi, César Leandro Schultz,

Maritime and Coastal Archaeology

Research Article| February 27, 2018 A MIDDLE PERMIAN (ROADIAN) LUNGFISH AESTIVATION BURROW FROM THE RIO DO RASTO FORMATION (PARANÁ BASIN, BRAZIL) AND ASSOCIATED U-Pb DATING HEITOR FRANCISCHINI; HEITOR FRANCISCHINI 1Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Porto Alegre, Caixa Postal 15.001, CEP 91501-970, Brazil Search for other works by this author on: GSW Google Scholar PAULA DENTZIEN-DIAS; PAULA DENTZIEN-DIAS 2Instituto de Oceanografia, Universidade Federal do Rio Grande, Avenida Itália Km 8, Rio Grande, CEP 96201-900, Brazil Search for other works by this author on: GSW Google Scholar MARGOT GUERRA-SOMMER; MARGOT GUERRA-SOMMER 1Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Porto Alegre, Caixa Postal 15.001, CEP 91501-970, Brazil Search for other works by this author on: GSW Google Scholar RUALDO MENEGAT; RUALDO MENEGAT 1Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Porto Alegre, Caixa Postal 15.001, CEP 91501-970, Brazil Search for other works by this author on: GSW Google Scholar JOÃO ORESTES SCHNEIDER SANTOS; JOÃO ORESTES SCHNEIDER SANTOS 3Centre for Global Targeting, University of Western Australia, 35 Stirling Highway, Perth, 6009, Australia Search for other works by this author on: GSW Google Scholar JOSELINE MANFROI; JOSELINE MANFROI 4Programa de Pós-Graduação em Ambiente e Desenvolvimento, Centro Universitário UNIVATES, Lajeado, CEP 95900-000, Brazil Search for other works by this author on: GSW Google Scholar CESAR LEANDRO SCHULTZ CESAR LEANDRO SCHULTZ 1Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Porto Alegre, Caixa Postal 15.001, CEP 91501-970, Brazil Search for other works by this author on: GSW Google Scholar Author and Article Information HEITOR FRANCISCHINI 1Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Porto Alegre, Caixa Postal 15.001, CEP 91501-970, Brazil PAULA DENTZIEN-DIAS 2Instituto de Oceanografia, Universidade Federal do Rio Grande, Avenida Itália Km 8, Rio Grande, CEP 96201-900, Brazil MARGOT GUERRA-SOMMER 1Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Porto Alegre, Caixa Postal 15.001, CEP 91501-970, Brazil RUALDO MENEGAT 1Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Porto Alegre, Caixa Postal 15.001, CEP 91501-970, Brazil JOÃO ORESTES SCHNEIDER SANTOS 3Centre for Global Targeting, University of Western Australia, 35 Stirling Highway, Perth, 6009, Australia JOSELINE MANFROI 4Programa de Pós-Graduação em Ambiente e Desenvolvimento, Centro Universitário UNIVATES, Lajeado, CEP 95900-000, Brazil CESAR LEANDRO SCHULTZ 1Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Porto Alegre, Caixa Postal 15.001, CEP 91501-970, Brazil email: heitorfrancischini@hotmail.com Publisher: SEPM Society for Sedimentary Geology First Online: 27 Feb 2018 Online Issn: 1938-5323 Print Issn: 0883-1351 Copyright © 2018, SEPM (Society for Sedimentary Geology) PALAIOS (2018) 33 (2): 69–84. https://doi.org/10.2110/palo.2017.050 Article history First Online: 27 Feb 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation HEITOR FRANCISCHINI, PAULA DENTZIEN-DIAS, MARGOT GUERRA-SOMMER, RUALDO MENEGAT, JOÃO ORESTES SCHNEIDER SANTOS, JOSELINE MANFROI, CESAR LEANDRO SCHULTZ; A MIDDLE PERMIAN (ROADIAN) LUNGFISH AESTIVATION BURROW FROM THE RIO DO RASTO FORMATION (PARANÁ BASIN, BRAZIL) AND ASSOCIATED U-Pb DATING. PALAIOS 2018;; 33 (2): 69–84. doi: https://doi.org/10.2110/palo.2017.050 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyPALAIOS Search Advanced Search Abstract The Permian Rio do Rasto Formation (Paraná Basin) crops out in southern Brazil and was deposited under fluvio-lacustrine settings. A singular outcrop located in the Aceguá municipality (Rio Grande do Sul State) represents a sequence of three distinct levels of paleosols in which rhizoliths and a single vertebrate burrow were recovered. The latter has a sub-vertical orientation, a slightly curved shape and a gross morphology and simple architecture that are consistent with aestivation burrows produced by lungfishes. The occurrence of this structure, in association with the features of the paleosols, indicates a seasonal climate with drought events. Additionally, a tonstein layer is interbedded in the paleosol sequence, indicating the influence of volcanic ash falls in the paleoenvironment. Zircons were collected from this level and dated using U-Pb techniques and the obtained age is 270.61 +1.76/-3.27 Ma (Roadian). The paleoenvironmental context of this outcrop is in accordance with a dry, seasonal climate of southwestern Pangaea during the early Guadalupian. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.