Sedimentary palaeoenvironment, petrography, provenance and diagenetic inference of the Anacleto Formation in the Neuquén Basin, Late Cretaceous, Argentina

Armas, Paula; Moreno, Carmen; Sánchez, María Lidia; González, Félipe

doi:10.1016/j.jsames.2014.03.004

Cited by 12 publications

(9 citation statements)

References 82 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Bajo de la Carpa Formation is constituted by coarse‐grained sandstones of fluvial origin, interdigitated with thin beds of siltstones and claystones (Leanza et al ., ). The highest unit of the Neuquén Group is the Anacleto Formation, composed exclusively of siltstones and mudstones, interpreted as low‐gradient fluvial deposits and proximal to mid‐estuarine deposits, related to the onset of the first Atlantic transgression that affected the Neuquén Basin in the Late Campanian (Armas & Sánchez, ; Armas et al ., ). This transgression is recorded by the deposits of the Malargüe Group, whose contact with the Neuquén Group is defined by an unconformity (Fig.…”

Section: Stratigraphy Of the Neuquén Groupmentioning

confidence: 97%

Cretaceous deformation of the southern Central Andes: synorogenic growth strata in the Neuquén Group (35° 30′–37° S)

et al. 2015

View full text Add to dashboard Cite

The Neuquén Group is an Upper Cretaceous continental sedimentary unit exhumed during the latest Miocene contractional phase occurred in the southern Central Andes, allowing a direct field observation and study of the depositional geometries. The identification of growth strata on these units surrounding the structures of the frontal parts of the Andes, sedimentological analyses and U–Pb dating of detrital components, allowed the definition of a synorogenic unit that coexisted with the uplift of the early Andean orogen since ca. 100 Ma, maximum age obtained in this work, compatible with previous assignments and constrained in the top by the deposition of the Malargüe Group, in the Maastrichtian (ca. 72 Ma). The definition of a wedge top area in this foreland basin system, where growth strata were described, permitted to identify a Late Cretaceous orogenic front and foredeep area, whose location and amplitude contrast with previous hypotheses. This wedge top area was mostly fed from the paleo‐Andes with small populations coming from sources in the cratonic area that are interpreted as a recycling in Jurassic and Lower Cretaceous sections, which contrasts with other analyses performed at the foredeep zone that have mixed sources. In particular, Permian sources are interpreted as coming directly from the cores of the basement structures, where Neopaleozoic sections are exposed, next to the synorogenic sedimentation, implying a strong incision in Late Cretaceous times with an exhumation structural level similar to the present. The maximum recognised advance for this Late Cretaceous deformation in the study area is approximately 500 km east of the Pacific trench, which constitutes an anomaly compared with neighbour segments where Late Cretaceous deformations were found considerably retracted. The geodynamic context of the sedimentation of this unit is interpreted as produced under the westward fast moving of South America, colliding with two consecutive mid‐ocean ridges during a period of important plate reorganisation. The subduction of young, anhydrous, buoyant lithosphere would have produced changes in the subduction geometry, reflected first by an arc waning/gap and subsequently by an arc migration that coexisted with synorogenic sedimentation. These magmatic and deformational processes would be the product of a shallow subduction regime, following previous proposals, which occurred in Late Cretaceous times, synchronous to the sedimentation of the Neuquén Group.

show abstract

Section: Stratigraphy Of the Neuquén Groupmentioning

confidence: 97%

Cretaceous deformation of the southern Central Andes: synorogenic growth strata in the Neuquén Group (35° 30′–37° S)

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The petrographic analysis comprised identifying the compositional of the clasts, characterization of the sandstone, their textural, and the modal data analysis (e.g., Refs. [ 32 , 33 ]). Observation of the sandstone texture consists of measurements of grain size, grain contact, roundness, sorting, as well as internal and fabric arrangement.…”

Section: Methodsmentioning

confidence: 99%

Facies analysis, biostratigraphy, and provenance of the late Neogene Seulimeum Formation, Northwest Aceh basin, Sumatra (Indonesia)

Nugraha,

Sunardi,

Haryanto

et al. 2023

Heliyon

View full text Add to dashboard Cite

“…Turbidites also contain important information for interpreting both the compositional tectonic setting and evolution of the continental crust that can be linked to the depositional environment (Raymond, 1995;Cingolani et al, 2003). Petrographic studies show that clastic rocks can be used for classification the provenance (Dickinson et al, 1983;Bordy et al, 2004;Armas et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Petrographic characteristics of deep marine turbidite sandstones of the Upper Cretaceous Tanjero Formation, Northwestern Sulaimaniyah, Iraq: implications for provenance and tectonic setting

Çelik

Salih

2020

Bulletin of the Mineral Research and Exploration

View full text Add to dashboard Cite

This study was carried out to determine the sedimentary provenance of Upper Cretaceous turbidites of Tanjero Formation. The sandstone portion of the unit has been examined based on field and laboratory studies. Seven sections were measured and described in detail on the perfectly cropped out part of the unit at the southern limb of the Sulaimaniyah Syncline. The thickness of the measured sections varies from 120 m to 192 m. The measured sections start from the top of the underlying Shiranish Formation to the syncline axis in the Tanjero Formation. For petrographic analysis sixty-nine representative rock samples were collected. Modal analysis and ternary diagrams point out that, the sandstones are calclithite (litharenite), very fine to medium grained in size consisting of chert, siltstone, mudstone, radiolarian chert and radiolarian mudstone fragments, angular to subangular in shape, very poorly to moderately sorted, transported over short distances and represent submature stage. Grain contact types and high contact index (4,7) indicate moderate to tightly packing, moderate compaction. Transported broken neritic fossil shells, moderately rounded glauconite grains, and undefinable fossils in the altered carbonate rock fragments indicate that the tectonic provenance, lithic recycle category, composed of not only the clastics as interpreted in previous studies derived from Lower Cretaceous Qulqula (radiolarian) Formation which represents deep marine, but also it revealed that a sedimentary formation must also exist in the source area, which is the Lower Cretaceous Balambo Formation.

show abstract

Sedimentary palaeoenvironment, petrography, provenance and diagenetic inference of the Anacleto Formation in the Neuquén Basin, Late Cretaceous, Argentina

Cited by 12 publications

References 82 publications

Cretaceous deformation of the southern Central Andes: synorogenic growth strata in the Neuquén Group (35° 30′–37° S)

Cretaceous deformation of the southern Central Andes: synorogenic growth strata in the Neuquén Group (35° 30′–37° S)

Facies analysis, biostratigraphy, and provenance of the late Neogene Seulimeum Formation, Northwest Aceh basin, Sumatra (Indonesia)

Petrographic characteristics of deep marine turbidite sandstones of the Upper Cretaceous Tanjero Formation, Northwestern Sulaimaniyah, Iraq: implications for provenance and tectonic setting

Contact Info

Product

Resources

About