Lower and Middle Devonian Malvinokaffric ostracods from the Precordillera Basin of San Juan, Argentina

Salas, María José; Rustán, Juan José; Sterren, Andrea F.

doi:10.1016/j.jsames.2013.02.002

Cited by 19 publications

(27 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A guide horizon originally recognized by Keidel (1921) allows a new correlation scheme for the different stratigraphic sections, evidencing the diachronism between these units (Rustán and Vaccari, 2010;Salas et al, 2013).The boundary has been discussed in the literature and it is interpreted as being progressively younger northwards. Hence, the oldest ages of the Punta Negra Formation are latest?…”

Section: Geological Setting and Provenance Of The Materialsmentioning

confidence: 93%

“…Hence, the oldest ages of the Punta Negra Formation are latest? Pragian-early Emsian in the south of the basin, whereas they are Emsian-early Frasnian in the north, according the paleontological data summarized by Herrera and Bustos (2001) and Salas et al (2013).…”

Section: Geological Setting and Provenance Of The Materialsmentioning

confidence: 93%

“…In this context, the discovery of new fossiliferous beds in the Punta Negra Formation (Rustán and Vaccari, 2010;Rustán, 2011;Salas et al, 2013) including bivalves, ostracods, trilobites, brachiopods, gastropods, hyolithids, cephalopods, crinoids, bryozoans and corals is highly interesting as it contributes to the knowledge on the Middle Devonian fauna from Argentina. Numerous contributions were published by Sánchez (1985Sánchez ( , 1989Sánchez ( , 1991Sánchez ( , 2003Sánchez ( , 2005 who over the last decades studied the Early and Middle Paleozoic mollusks from western Argentina.…”

mentioning

confidence: 99%

See 2 more Smart Citations

First Middle Devonian Bivalves from Argentina, New Records from the Punta Negra Formation and Insights on Middle Paleozoic Faunas from the Precordillera Basin

2015

Self Cite

View full text Add to dashboard Cite

Section: Geological Setting and Provenance Of The Materialsmentioning

confidence: 93%

Section: Geological Setting and Provenance Of The Materialsmentioning

confidence: 93%

mentioning

confidence: 99%

See 1 more Smart Citation

First Middle Devonian Bivalves from Argentina, New Records from the Punta Negra Formation and Insights on Middle Paleozoic Faunas from the Precordillera Basin

2015

Self Cite

View full text Add to dashboard Cite

“…Further aspects of the geologic setting, relevant here, have been treated in several previous works such as those by Baldis (1975), Herrera (1995a, b), Herrera and Bustos (2001), Rustán and Vaccari (2010), Carrera et al (2013), and Salas et al (2013).…”

Section: Stratigraphy and Geological Settingmentioning

confidence: 98%

“…Trilobites, for example (Eldredge and Ormiston, 1979), exhibit endemic signatures (despite a number of suggestions to the contrary by Rustán andVaccari, 2010, 2012;Holloway and Rustán, 2012). The same situation occurs with upper Lower-Middle Devonian ostracodes (Salas et al, 2013) and hyoliths (Malinky and Racheboeuf, 2011). In contrast, a composite paleobiogeographic signal has been recognized in brachiopods (Herrera, 1995b;Herrera et al, 1998;Isaacson, 2007) and bivalves from the Argentine Precordillera (Sterren et al, 2015).…”

Section: Remarks-the New Genus Is Included In the Superfamilymentioning

confidence: 99%

The new genusTalacastospongia: insights on the first record of a Devonian sponge from South America

Carrera

Rustán

2015

J. paleontol.

View full text Add to dashboard Cite

The Lower Devonian (Lochkovian) hexactinellid sponge Talacastospongia minima new genus new species is reported from the lower beds of the Talacasto Formation in the Argentine Precordillera. It represents the first Devonian sponge from South America and the best record in the paleobiogeographic context of the Malvinokaffric Realm, otherwise virtually devoid of spiculate sponges. This discovery provides some tentative insights on the age and oldest record of the Family Pileolitidae. The paleogeographical context for this new finding shows a high latitude setting with a notable scarcity of hexactinellid sponges recorded to date in Devonian Malvinokaffric basins, and the absence of calcareous spiculate sponges (heteractinids) and hypercalcified sponges (stromatoporoids, sphinctozoans).

show abstract

Provenance analysis of Devonian peripheral foreland basins in SW Gondwana, case of the Gualilán Group, Precordillera Argentina

Arnol

Uriz

Cingolani

et al. 2020

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

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. T DM ages between 1.40 and 1.46 Ga and ε Nd(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.

show abstract

Lower and Middle Devonian Malvinokaffric ostracods from the Precordillera Basin of San Juan, Argentina

Cited by 19 publications

References 24 publications

First Middle Devonian Bivalves from Argentina, New Records from the Punta Negra Formation and Insights on Middle Paleozoic Faunas from the Precordillera Basin

First Middle Devonian Bivalves from Argentina, New Records from the Punta Negra Formation and Insights on Middle Paleozoic Faunas from the Precordillera Basin

The new genusTalacastospongia: insights on the first record of a Devonian sponge from South America

Provenance analysis of Devonian peripheral foreland basins in SW Gondwana, case of the Gualilán Group, Precordillera Argentina

Contact Info

Product

Resources

About