干旱区生态环境知识资源中心(Arid): Controls on Early Cretaceous desert sediment provenance in south-west Gondwana, Botucatu Formation (Brazil and Uruguay)

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DOI	10.1111/sed.12715
	Controls on Early Cretaceous desert sediment provenance in south-west Gondwana, Botucatu Formation (Brazil and Uruguay)
	Bertolini, Gabriel 1,2; Marques, Juliana C.2; Hartley, Adrian J.3; Da-Rosa, Atila A. S.4; Scherer, Claiton M. S.2; Basei, Miguel A. S.5; Frantz, Jose C.2
通讯作者	Bertolini, Gabriel
来源期刊	SEDIMENTOLOGY
ISSN	0037-0746
EISSN	1365-3091
出版年	2020
卷号	67 期号:5 页码:2672-2690
英文摘要	The Lower Cretaceous Botucatu Formation records the development of widespread dry-aeolian desert sedimentation throughout the Parana Basin in south-west Gondwana. To reconstruct the provenance of the aeolian sediment, petrography, granulometric analysis, U-Pb detrital zircon ages have been determined from along the southern basin margin in Rio Grande do Sul state (southern Brazil) and Uruguay (Tacuarembo region). The dataset reveals a mean composition Qt(89)F(8)L(3), comprising very fine to medium-grained quartozose and feldspatho-quartzose framework. Heavy mineral analysis reveals an overall dominance of zircon, tourmaline and rutile grains (mean ZTR(0.84)) with sporadic garnet, epidote and pyrolusite occurrences. The detrital zircon U-Pb ages are dominated by Cambrian to Neoproterozoic (515 to 650 Ma), Tonian to Stenian (900 to 1250 Ma) and Orosirian to Rhyacian (1.8 to 2.2 Ga) material. The detrital zircon dataset demonstrates a significant lateral variation in sediment provenance: Cambrian to Neoproterozoic detrital zircons dominate in the east, while Tonian to Stenian and Orosirian to Rhyacian ages predominate in the west of the study area. Sandstones are quartz-rich with dominantly durable zircon, tourmaline and rutile heavy mineral suite, with subtle but statistically significant along-strike differences in heavy mineral populations and detrital mineralogy which are thought to record local sediment input points into the aeolian system. The similar age spectra of Botucatu desert with proximal Parana Basin units, the predominance of quartzose, and zircon, tourmaline and rutile components, suggests that recycling is the mechanism responsible for the erg feeding.
英文关键词	Botucatu desert Cretaceous Parana Basin desert accumulation detrital zircon heavy minerals provenance analysis
类型	Article
语种	英语
国家	Scotland ; Brazil
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000520242500001
WOS关键词	LA-PLATA CRATON ; HEAVY-MINERAL ASSEMBLAGES ; FLOOD-BASALT VOLCANISM ; NICO PEREZ TERRANE ; DOM FELICIANO BELT ; RUB AL-KHALI ; U-PB AGES ; PARANA BASIN ; SOUTHERNMOST BRAZIL ; STRATIGRAPHIC EVOLUTION
WOS类目	Geology
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/2XILL650/315562
作者单位	1.Univ Aberdeen, Kings Coll, Sch Geosci, Aberdeen AB24 3FX, Scotland; 2.Univ Fed Rio Grande do Sul, Inst Geociencias, BR-90040060 Porto Alegre, RS, Brazil; 3.Univ Aberdeen, Kings Coll, Geol & Petr Geol, Aberdeen AB24 3FX, Scotland; 4.Univ Fed Santa Maria, Dept Geociencias, Av Roraima,1000 Predio 17, BR-97105900 Santa Maria, RS, Brazil; 5.Univ Sao Paulo, Inst Geociencias, BR-05508080 Sao Paulo, SP, Brazil
推荐引用方式 GB/T 7714	Bertolini, Gabriel,Marques, Juliana C.,Hartley, Adrian J.,et al. Controls on Early Cretaceous desert sediment provenance in south-west Gondwana, Botucatu Formation (Brazil and Uruguay)[J],2020,67(5):2672-2690.
APA	Bertolini, Gabriel.,Marques, Juliana C..,Hartley, Adrian J..,Da-Rosa, Atila A. S..,Scherer, Claiton M. S..,...&Frantz, Jose C..(2020).Controls on Early Cretaceous desert sediment provenance in south-west Gondwana, Botucatu Formation (Brazil and Uruguay).SEDIMENTOLOGY,67(5),2672-2690.
MLA	Bertolini, Gabriel,et al."Controls on Early Cretaceous desert sediment provenance in south-west Gondwana, Botucatu Formation (Brazil and Uruguay)".SEDIMENTOLOGY 67.5(2020):2672-2690.