干旱区生态环境知识资源中心(Arid): Comparative evolution of clay minerals in southern Parana Basin (Brazil): Implications for triassic paleoclimate

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DOI	10.1016/j.jsames.2018.12.012
	Comparative evolution of clay minerals in southern Parana Basin (Brazil): Implications for triassic paleoclimate
	Rodrigues, Isaque C.1; Mizusaki, Ana M. P.1; Lima, Lais G.1; Maraschin, Anderson J.2
通讯作者	Rodrigues, Isaque C.
来源期刊	JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
ISSN	0895-9811
出版年	2019
卷号	90 页码:181-190
英文摘要	Parana Basin exposes two distinct portions from Triassic deposits bearing different clay minerals content. Even if they belong to Santa Maria Supersequence, both are commonly referred as Santa Maria Formation and Arroio Moirao Graben. These sedimentary layers were deposited in Triassic and separated later because of overall spreading in southern portion of Gondwana paleocontinent during Cretaceous, forming a relict graben to the southern part of Parana basin. This process isolated the layers of Arroio Moirao Graben from the well-known Santa Maria layers, even though they stratigraphically belong to the same unit. The deposits are part of Gondwana Supersequence II when the Parana rift basin formed. Even in genetically-related rocks, clay minerals show different assemblages in each portion. In Santa Maria Formation rocks, clay minerals content represents arid to semi-arid climate, e.g., I/S mixed-layers and illite, whereas in Arroio Moirao Graben, clay minerals content is confined to kaolinite, which implies humid conditions. Differences in clay mineral assemblages for these sedimentary units exemplify distinct diagenetic or climate conditions. SMF has more influence from the arid conditions, while AMG has both climatic and diagenetic humid features in the clay content.
英文关键词	Clay Illite Graben Kaolinite
类型	Article
语种	英语
国家	Brazil
收录类别	SCI-E
WOS记录号	WOS:000461525800013
WOS关键词	ARROIO MOIRAO GRABEN ; GONDWANA PALEOGEOGRAPHY ; SEQUENCE STRATIGRAPHY ; SANTA-MARIA ; FLUID-FLOW ; HYPERODAPEDON ; CONSTRAINTS ; DIAGENESIS ; ISOTOPE ; ZONE
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/2XILL650/217332
作者单位	1.Univ Fed Rio Grande do Sul, Inst Geociencias, Ave Bento Goncalves 9500, BR-91501970 Porto Alegre, RS, Brazil; 2.Pontificia Univ Catolica Rio Grande do Sul, Av Ipiranga 6681, BR-90619900 Porto Alegre, RS, Brazil
推荐引用方式 GB/T 7714	Rodrigues, Isaque C.,Mizusaki, Ana M. P.,Lima, Lais G.,et al. Comparative evolution of clay minerals in southern Parana Basin (Brazil): Implications for triassic paleoclimate[J],2019,90:181-190.
APA	Rodrigues, Isaque C.,Mizusaki, Ana M. P.,Lima, Lais G.,&Maraschin, Anderson J..(2019).Comparative evolution of clay minerals in southern Parana Basin (Brazil): Implications for triassic paleoclimate.JOURNAL OF SOUTH AMERICAN EARTH SCIENCES,90,181-190.
MLA	Rodrigues, Isaque C.,et al."Comparative evolution of clay minerals in southern Parana Basin (Brazil): Implications for triassic paleoclimate".JOURNAL OF SOUTH AMERICAN EARTH SCIENCES 90(2019):181-190.