气候变化领域集成服务门户(CCPortal): Late Palaeozoic glacial cycles and subcycles in western Gondwana: Correlation of surface and subsurface data of the Paraná Basin; Brazil

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DOI	10.1016/j.palaeo.2017.09.004
	Late Palaeozoic glacial cycles and subcycles in western Gondwana: Correlation of surface and subsurface data of the Paraná Basin; Brazil
	Valdez Buso V.; Aquino C.D.; Paim P.S.G.; de Souza P.A.; Mori A.L.; Fallgatter C.; Milana J.P.; Kneller B.
发表日期	2019
ISSN	0031-0182
卷号	531
英文摘要	The Paraná Basin, the largest basin in South America, received glacially derived sediments during the Late Palaeozoic Ice Age (LPIA) of the Gondwana supercontinent. Despite the importance of this basin for understanding the continental development of the Gondwana glaciation, and the fact that ca. 95% of this basin is not exposed at the surface, few attempts have been made to connect the exposed glacial strata to the subsurface record. In this paper, exposures of glacial cycles in the Upper Itararé Group in Santa Catarina State, southern Brazil, are analyzed, locally correlated and then linked to the three major glacial cycles previously described from subsurface studies along the basin. Together study areas (Doutor Pedrinho and Vidal Ramos) record five, partially comparable shorter glacial subcycles (relative to the major glacial cycles). These series comprise coarse-grained subaqueous outwash deposits, turbidite sand sheets, marine shales, and diamictites, the latter mostly derived from delta slope failure and ensuing resedimentation. In addition to sedimentological and genetic stratigraphic description and analysis, preliminary age determination based on the palynological content is also presented. Besides, a regional correlation of the described succession to the subsurface record is proposed based on well logs and core information. All the palynomorph associations identified from the exposed successions, which represent the upper third part of the Itararé Group, are related to the Subzone Protohaploxypinus goraiensis, base of the Vittatina costabilis Zone. This zone and correlated ones along the Gondwana are considered Early Permian in age. However, a first isotopic age recently obtained for the upper Itararé Group and published elsewhere is considered within a regional stratigraphic framework once it leads to new insights in terms of the LPIA time span recorded in the Paraná Basin. © 2017 Elsevier B.V.
英文关键词	Biostratigraphy; Itararé Group; Palynology; Sequence stratigraphy
语种	英语
scopus关键词	age determination; biostratigraphy; correlation; glacial-interglacial cycle; Gondwana; outwash; Paleozoic; palynomorph; Permian; Pleistocene; sequence stratigraphy; slope failure; turbidite; Brazil; Parana [Brazil]; Santa Catarina
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150886
作者单位	Geology and Petroleum Geology, School of Geosciences, University of Aberdeen, Aberdeen, Scotland AB24 3UE, United Kingdom; UNISINOS - Universidade do Vale do Rio Dos Sinos, Programa de Pós-Graduação em Geologia. Av. Unisinos, 950, Cristo Rei, São Leopoldo, Rio Grande do Sul, CEP 93022-000, Brazil; Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul. CP 15001, Porto Alegre, CEP 91501-970, Brazil; CONICET - Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Exactas Físicas y Naturales, Universidad Nacional de San Juan, Argentina. Av. Ignacio de la Roza 590(O), Complejo Universitario “Islas Malvinas”, J4502DCS Rivadavia, San Juan, Argentina
推荐引用方式 GB/T 7714	Valdez Buso V.,Aquino C.D.,Paim P.S.G.,et al. Late Palaeozoic glacial cycles and subcycles in western Gondwana: Correlation of surface and subsurface data of the Paraná Basin; Brazil[J],2019,531.
APA	Valdez Buso V..,Aquino C.D..,Paim P.S.G..,de Souza P.A..,Mori A.L..,...&Kneller B..(2019).Late Palaeozoic glacial cycles and subcycles in western Gondwana: Correlation of surface and subsurface data of the Paraná Basin; Brazil.Palaeogeography, Palaeoclimatology, Palaeoecology,531.
MLA	Valdez Buso V.,et al."Late Palaeozoic glacial cycles and subcycles in western Gondwana: Correlation of surface and subsurface data of the Paraná Basin; Brazil".Palaeogeography, Palaeoclimatology, Palaeoecology 531(2019).