干旱区生态环境知识资源中心(Arid): Carbonate-clastic sedimentation in the Parnaiba Basin, northern Brazil: Record of carboniferous epeiric sea in the Western Gondwana

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DOI	10.1016/j.jsames.2019.01.018
	Carbonate-clastic sedimentation in the Parnaiba Basin, northern Brazil: Record of carboniferous epeiric sea in the Western Gondwana
	Paiva de Medeiros, Renato Sol 1; Rodrigues Nogueira, Afonso Cesar 1; Cavalgante da Silva Junior, Jose Bandeira 1; Sial, Alcides Nobrega 2
通讯作者	Paiva de Medeiros, Renato Sol
来源期刊	JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
ISSN	0895-9811
出版年	2019
卷号	91 页码:188-202
英文摘要	The transgressive-regressive events due to changes in the eustatic sea level represent the occurrence of an epeiric sea in Western Gondwana. This event is recorded in the carbonate-siliciclastic succession exposed in the central portion of the Parnaiba Basin, Northern Brazil, mainly represented by densely fossiliferous deposits, with mollusks, brachiopods, corals and microfossils, related to the upper member of the Piaui Formation. Outcrop based facies/microfacies and stratigraphic analysis of this succession allowed the individualization of two facies associations (FA), representative of a shallow carbonate platform system adjacent to a coastal dune field. The FA1 - dune field/interdune, comprises well sorted, intensely biortubated, fine to medium-grained sandstone with even parallel and tabular cross stratification, as well as translatent climbing ripple cross-lamination. FA2-shallow sea deposits consist of fossiliferous pelletal carbonate and microspar carbonate layers, laterally continuous for hundreds of meters, interbedded with centimetric beds and lenses of organic shale with small pyrite crystals. Covariant values of positive delta O-18(carb) and negative delta C-13(carb) for the carbonate profiles, together with intense substitution of primary constituents by dolomite and an abundance of associated organic matter contributed towards determining an organogenic dolomitization model. Although the Pennsylvanian records a long icehouse event, glacioeustatic fluctuations were common during the Moscovian and Kasimovian. The icehouse periods contributed to the semi-arid to desert conditions that shaped the aeolic environments of the Piaui Formation. Later greenhouse events favored a rise in the sea level and development of an extensive epicontinental Pennsylvanian sea that extended throughout Western Gondwana called the Itaituba-Piaui sea in this paper, which connected the Andean, Solimoes, Amazonas and Parnaiba basins.
英文关键词	Parnaiba basin Piaui formation Pennsylvanian Western Gondwana Itaituba-Piaui sea
类型	Article
语种	英语
国家	Brazil
收录类别	SCI-E
WOS记录号	WOS:000469896600017
WOS关键词	DOLOMITE FORMATION ; PARANA BASIN ; ISOTOPE ; STRATIFICATION ; SEQUENCE ; FRACTIONATION ; STRATIGRAPHY ; SUCCESSION ; EVOLUTION ; SEAWATER
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/2XILL650/217334
作者单位	1.Fed Univ Para UFPA, Geosci Inst, Postgrad Program Geol & Geochem, Augusto Correa St S-N, BR-66075110 Belem, Para, Brazil; 2.Fed Univ Pernambuco UFPE, Stable Isotope Lab LABISE, Nucl Geochem Studies NEG, Belem, Para, Brazil
推荐引用方式 GB/T 7714	Paiva de Medeiros, Renato Sol,Rodrigues Nogueira, Afonso Cesar,Cavalgante da Silva Junior, Jose Bandeira,et al. Carbonate-clastic sedimentation in the Parnaiba Basin, northern Brazil: Record of carboniferous epeiric sea in the Western Gondwana[J],2019,91:188-202.
APA	Paiva de Medeiros, Renato Sol,Rodrigues Nogueira, Afonso Cesar,Cavalgante da Silva Junior, Jose Bandeira,&Sial, Alcides Nobrega.(2019).Carbonate-clastic sedimentation in the Parnaiba Basin, northern Brazil: Record of carboniferous epeiric sea in the Western Gondwana.JOURNAL OF SOUTH AMERICAN EARTH SCIENCES,91,188-202.
MLA	Paiva de Medeiros, Renato Sol,et al."Carbonate-clastic sedimentation in the Parnaiba Basin, northern Brazil: Record of carboniferous epeiric sea in the Western Gondwana".JOURNAL OF SOUTH AMERICAN EARTH SCIENCES 91(2019):188-202.