气候变化领域集成服务门户(CCPortal): Provenance analysis of Devonian peripheral foreland basins in SW Gondwana; case of the Gualilán Group; Precordillera Argentina

CCPortal

DOI	10.1007/s00531-020-01914-9
	Provenance analysis of Devonian peripheral foreland basins in SW Gondwana; case of the Gualilán Group; Precordillera Argentina
	Arnol J.A.; Uriz N.J.; Cingolani C.A.; Basei M.A.S.; Abre P.
发表日期	2020
ISSN	14373254
起始页码	2467
结束页码	2494
卷号	109 期号:7
英文摘要	We carried out a sedimentary provenance analysis of the Devonian Gualilán Group, Central Precordillera of western Argentina, focusing on the siliciclastic record of the Talacasto (Lower Devonian) and the Punta Negra (Lower-Middle Devonian) formations. Provenance is determined based on petrography, heavy minerals, whole-rock geochemistry, Sm–Nd isotopes, and U–Pb detrital zircon dating. Sandstones are composed of quartz, feldspar, and metamorphic and plutonic lithoclasts. The Gualilán Group underwent moderate weathering indicated by CIA values and Th/U ratios below 76 and 4.9, respectively. Th/Sc, Zr/Sc, Cr/V and La/Th ratios, negative Eu-anomalies and REE patterns point to felsic source compositions. The heavy minerals and zircon morphologies indicate that high-grade metamorphic and igneous rocks provided the bulk of detritus. TDM ages between 1.40 and 1.46 Ga and εNd(t) values ranging from − 9.21 to − 11.13 constrain the signature of the sources. U–Pb detrital zircon ages for the Talacasto Formation are equally distributed between the Famatinian (Late Cambrian–Late Devonian), Pampean–Brazilian (Neoproterozoic–Early Cambrian) and Grenvillian-Sunsas (Mesoproterozoic) orogenic cycles. Detrital zircon ages of the Punta Negra Formation were dominantly supplied from Mesoproterozoic rocks, linked to the Grenvillian-Sunsas orogeny. The data indicate a provenance from rocks located eastwards of the basin represented by the basement of the Pampean Ranges. The peripheral foreland basin developed during the post-collisional regime that followed the accretion of Cuyania against Gondwana. Whereas eastern and western Pampean Ranges provided detritus to the Talacasto Formation, the Punta Negra Formation was sourced by the western Pampean Ranges, implying exhumation and erosion of such basement during the Devonian. © 2020, Geologische Vereinigung e.V. (GV).
英文关键词	Detrital zircon ages; Devonian Gualilán Group; Precordillera; Provenance; SW Gondwana
语种	英语
scopus关键词	detrital deposit; Devonian; foreland basin; Gondwana; petrography; provenance; samarium-neodymium dating; siliciclastic deposit; uranium-lead dating; zircon; Precordillera
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147615
作者单位	CIG (UNLP-CONICET) Centro de Investigaciones Geológicas, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Diag 113 N° 275, La Plata, Argentina; División Científica de Geología-Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (UNLP), Paseo del Bosque s/n, 1900, La Plata, Argentina; Instituto de Geociencias, Centro de Pesquisas Geocronológicas (CPGeo), Universidade de São Paulo, São Paulo, Brazil; Geología y Recursos Minerales, Centro Universitario Regional Este, Universidad de la República, Ruta 8, Treinta y Tres, Uruguay
推荐引用方式 GB/T 7714	Arnol J.A.,Uriz N.J.,Cingolani C.A.,et al. Provenance analysis of Devonian peripheral foreland basins in SW Gondwana; case of the Gualilán Group; Precordillera Argentina[J],2020,109(7).
APA	Arnol J.A.,Uriz N.J.,Cingolani C.A.,Basei M.A.S.,&Abre P..(2020).Provenance analysis of Devonian peripheral foreland basins in SW Gondwana; case of the Gualilán Group; Precordillera Argentina.International Journal of Earth Sciences,109(7).
MLA	Arnol J.A.,et al."Provenance analysis of Devonian peripheral foreland basins in SW Gondwana; case of the Gualilán Group; Precordillera Argentina".International Journal of Earth Sciences 109.7(2020).