干旱区生态环境知识资源中心(Arid): Lithostratigraphy of the Serra Geral Formation in the northern portion of the Parana-Etendeka Igneous Province: A tool for tracking Early Cretaceous paleoenvironmental changes

Arid

DOI	10.1016/j.jvolgeores.2020.107152
	Lithostratigraphy of the Serra Geral Formation in the northern portion of the Parana-Etendeka Igneous Province: A tool for tracking Early Cretaceous paleoenvironmental changes
	Famelli, Natalia; Lima, Evandro F.; Carmo, Isabela de O.
通讯作者	Famelli, N (corresponding author), PETEROBRAS, Ctr Pesquisas & Desenvolvimento Leopoldo Amer Mig, Cidade Univ,Av Horacio Macedo 950, BR-21941915 Rio De Janeiro, RJ, Brazil.
来源期刊	JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
ISSN	0377-0273
EISSN	1872-6097
出版年	2021
卷号	410
英文摘要	A detailed lithofacies analysis in Continental Flood Basalt Provinces allows the comprehension of their evolution and paleoenvironmental significance. In the northern portion of the Parana-Etendeka Igneous Province (PEIP), in Brazil (Uberlandia-Araguari area), a volcanological and stratigraphic approach provided evidence that the basaltic volcanic succession is not monotonous, involving different lava flow morphologies and architecture. The volcanic succession reaches a thickness of ca. 300 m and includes four lithofacies associations: pillow lavas, compound pahoehoe, simple pahoehoe, and sediment-matrix basalt breccia. Pillow lavas, simple pahoehoe, and compound pahoehoe characterize the onset of volcanic activity in the area. Sediment-matrix basalt breccia and thick simple pahoehoe lavas occur in upper stratigraphic levels. Some of these thick igneous bodies can represent invasive lavas or shallow intrusions. In the study area, the common presence of volcanic deposits and structures formed in wet conditions is evidenced by the occurrence of pillow lavas, undulatory columns, and interleaved lacustrine and fluvial sedimentary rocks. These deposits reflect different environmental conditions from those previously described as arid in other portions of the PEIP. Low-temperature post-depositional alteration has affected the volcanic and sedimentary rocks of the study area, obliterating many of the primary sedimentary structures. The subaerial and subaqueous lavas are chemically similar, and compatible with high-TiO2 Pitanga magma type. The Uberlandia-Araguari area and the southern part of the PEIP have a similar stratigraphic style both characterized by the dominance of compound pahoehoe lavas at the base and by an intermittent volcanism, which is evidenced by the intercalation of sedimentary deposits with lavas. (c) 2020 Elsevier B.V. All rights reserved. Superscript/Subscript Available
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000626267800005
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369019
作者单位	[Famelli, Natalia; Lima, Evandro F.] Univ Fed Rio Grande Do Sul, Inst Geociencias, Av Bento Goncalves 9500,Predio 43136,Caixa Postal, BR-91501970 Porto Alegre, RS, Brazil; [Famelli, Natalia; Carmo, Isabela de O.] PETEROBRAS, Ctr Pesquisas & Desenvolvimento Leopoldo Amer Mig, Cidade Univ,Av Horacio Macedo 950, BR-21941915 Rio De Janeiro, RJ, Brazil
推荐引用方式 GB/T 7714	Famelli, Natalia,Lima, Evandro F.,Carmo, Isabela de O.. Lithostratigraphy of the Serra Geral Formation in the northern portion of the Parana-Etendeka Igneous Province: A tool for tracking Early Cretaceous paleoenvironmental changes[J],2021,410.
APA	Famelli, Natalia,Lima, Evandro F.,&Carmo, Isabela de O..(2021).Lithostratigraphy of the Serra Geral Formation in the northern portion of the Parana-Etendeka Igneous Province: A tool for tracking Early Cretaceous paleoenvironmental changes.JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH,410.
MLA	Famelli, Natalia,et al."Lithostratigraphy of the Serra Geral Formation in the northern portion of the Parana-Etendeka Igneous Province: A tool for tracking Early Cretaceous paleoenvironmental changes".JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH 410(2021).