Stratigraphy, sedimentology, and geothermal reservoir potential of the volcaniclastic Cura-Mallín succession at Lonquimay, Chile

Pedroza, Viviana; Roux, J.P. Le; Gutiérrez, Néstor M.; Vicencio, Vladimir E.

doi:10.1016/j.jsames.2017.04.011

Cited by 15 publications

(10 citation statements)

References 8 publications

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“…The Maastrichtian El Molino Formation of Bolivia yields the oldest putative percichthyid fossils (see online Table S7), including the articulated anterior half of a skeleton referred to the genus Percichthys (Gayet & Meunier, ). Other articulated percichthyid specimens have been found in deposits from the early–middle Eocene of Argentina and the Oligocene of Brazil, and in the early Miocene Río Pedregoso Formation of Chile (originally interpreted as late Paleocene in age; Arratia, ; Pedroza et al ., ). These fossils show a broader distribution of percichthyids in South America, where they are today restricted to the southernmost tip of the continent.…”

Section: Resultsmentioning

confidence: 97%

Vicariance and dispersal in southern hemisphere freshwater fish clades: a palaeontological perspective

Capobianco

Friedman

2018

Biological Reviews

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Widespread fish clades that occur mainly or exclusively in fresh water represent a key target of biogeographical investigation due to limited potential for crossing marine barriers. Timescales for the origin and diversification of these groups are crucial tests of vicariant scenarios in which continental break‐ups shaped modern geographic distributions. Evolutionary chronologies are commonly estimated through node‐based palaeontological calibration of molecular phylogenies, but this approach ignores most of the temporal information encoded in the known fossil record of a given taxon. Here, we review the fossil record of freshwater fish clades with a distribution encompassing disjunct landmasses in the southern hemisphere. Palaeontologically derived temporal and geographic data were used to infer the plausible biogeographic processes that shaped the distribution of these clades. For seven extant clades with a relatively well‐known fossil record, we used the stratigraphic distribution of their fossils to estimate confidence intervals on their times of origin. To do this, we employed a Bayesian framework that considers non‐uniform preservation potential of freshwater fish fossils through time, as well as uncertainty in the absolute age of fossil horizons. We provide the following estimates for the origin times of these clades: Lepidosireniformes [125–95 million years ago (Ma)]; total‐group Osteoglossomorpha (207–167 Ma); Characiformes (120–95 Ma; a younger estimate of 97–75 Ma when controversial Cenomanian fossils are excluded); Galaxiidae (235–21 Ma); Cyprinodontiformes (80–67 Ma); Channidae (79–43 Ma); Percichthyidae (127–69 Ma). These dates are mostly congruent with published molecular timetree estimates, despite the use of semi‐independent data. Our reassessment of the biogeographic history of southern hemisphere freshwater fishes shows that long‐distance dispersals and regional extinctions can confound and erode pre‐existing vicariance‐driven patterns. It is probable that disjunct distributions in many extant groups result from complex biogeographic processes that took place during the Late Cretaceous and Cenozoic. Although long‐distance dispersals likely shaped the distributions of several freshwater fish clades, their exact mechanisms and their impact on broader macroevolutionary and ecological dynamics are still unclear and require further investigation.

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Section: Resultsmentioning

confidence: 97%

Vicariance and dispersal in southern hemisphere freshwater fish clades: a palaeontological perspective

Capobianco

Friedman

2018

Biological Reviews

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“…6a), †Percichthys sandovali Arratia, 1982, and †Percichthys sylviae Rubilar, Abad, 1990 from the middle Miocene of Cura-Mallín (= Río Pedregoso) Formation (ca. 12.6 Ma), Lonquimay, Bío-Bío region, Chile (Pedroza et al, 2017). In addition, Percichthys sp.…”

Section: E180102[6]mentioning

confidence: 97%

The South American and Australian percichthyids and perciliids. What is new about them?

Arratia

Quezada‐Romegialli

2019

Neotrop. ichthyol.

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A study including morphological characters and mitogenomics of South American and Australian fishes previously assigned to Percichthyidae was conducted. Results generated from these different data sets reveal major disagreements concerning the content and interpretation of the so-called percichthyids. A phylogenetic analysis based on 54 morphological characters suggests the existence of two major clades: (1) Percichthyidae, including the South American Percichthys and the Australian taxa Macquaria australasica, Macquaria (= Plectroplites), and Maccullochella; (2) Perciliidae with the South American genus Percilia at the base plus more advanced Australian genera Nannoperca, Nannatherina, Bostockia, and Gadopsis. In contrast, molecular and mitogenomic evidence suggests only one clade (Percichthyidae), with the exclusion of species of Macquaria (= Percalates). Additionally, the results reveal the existence of various taxonomic problems, such as the current interpretation of only one species of Percichthys in Argentina, an interpretation that is not supported by the present study; the existence of cryptic species of Percilia as well as of Gadopsis, Nannoperca, and Macquaria that will increase the diversity of the genera; and the need for an extensive revision of species previously assigned to Percalates versus Macquaria. Disagreements point to the need to develop further research on the so-called percichthyids and perciliids.

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“…4, and 5, and table 1). However, the oldest age reported for the Guapitrío Member (22.0 Ma) by these authors was obtained from a location where Pedroza et al (2017) and Encinas et al (2022) observed a contact between this unit and the overlying Río Pedregoso Member (CMS). It is likely that the younger ages obtained from volcanic rocks in the western Principal Cordillera correspond to younger units (Suárez & Emparán, 1997), as indicated before.…”

Section: Oligocene-miocene Volcanic and Sedimentary Rocksmentioning

confidence: 87%

“…The CMV unconformably overlies Jurassic, Upper Cretaceous, and Paleocene rocks (Muñoz & Niemeyer, 1984;Niemeyer & Muñoz, 1983;Suárez & Emparán, 1995, 1997. The contact between the CMV and the CMS is conformable and has only been observed in a few locations in the eastern Principal Cordillera, including the Río Lileo area in Ar- gentina (~37° S; Espinach, 2009;Utgé et al, 2009) and the Lonquimay area in Chile (~39°S; Encinas et al, 2022;Pedroza et al, 2017).…”

Section: Oligocene-miocene Volcanic and Sedimentary Rocksmentioning

confidence: 99%

“…González & Vergara, 1962), or to the Eocene based on freshwater bivalves (Niemeyer & Muñoz, 1983), has been a subject of debate. Subsequent studies conducted various K/Ar, Ar/ Ar, and U-Pb radiometric analyses on volcanic and sedimentary strata within the CMS Formation, resulting in age determinations spanning the early, middle, and late Miocene (figs 4, and 5, and table 1; Encinas et al, 2022;Flynn et al, 2008;Herriott, 2006;Pedroza et al, 2017;Suárez & Emparán, 1995). These ages are supported by distinct mammalian assemblages, ranging from the Colhuehuapian (early Miocene) to potentially the Mayoan (late middle Miocene) SALMAs (Flynn et al, 2008;Solórzano et al, 2019Solórzano et al, , 2020Solórzano et al, , 2021Solórzano et al, , 2023.…”

Section: Oligocene-miocene Volcanic and Sedimentary Rocksmentioning

confidence: 99%

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Cenozoic Basin Evolution During Alternating Extension and Shortening in the Southern Central Andes Along the Chile-Argentina Border, 37–38°S

Encinas,

Rosselot,

Sagripanti

et al. 2024

American Journal of Science

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The south-central Chile and Argentina margin experienced a regional phase of extensional tectonics during the Oligocene–early Miocene, forming several basins across the forearc, Andean Cordillera, and retroarc regions. These basins accumulated thick successions of volcanic and sedimentary rocks. Subsequently, Neogene contractional tectonics led to the development of the current Andean Cordillera and the deposition of synorogenic clastic deposits in foreland basins. Traditionally, the Cura Mallín Formation, comprising a lower volcanic unit (CMV) and an upper sedimentary unit (CMS), has been interpreted to have formed during the Oligocene–early Miocene extensional phase. However, some studies propose deposition of the CMS in a foreland basin during the early–late Miocene. To unravel the transition from extensional to contractional tectonics in the Andes of south-central Chile and Argentina, we conducted new geochronological analyses (U-Pb, LA-ICP-MS) and integrated these results with structural, stratigraphic, and sedimentological observations in key sections within the CMS and the overlying Trapa-Trapa Formation in the Principal Cordillera along the Chile-Argentina border (37°–38°S). Our findings indicate that only the lower part of the CMS was deposited in an extensional setting, as evidenced by the presence of an inverted extensional wedge dated at ∼20 Ma. The middle-upper CMS (∼19 to 9 Ma) and contemporaneous units to the east exhibit evidence of syncontractional deformation, suggesting deposition in a foreland basin generated by shortening of the western Principal Cordillera. Around 9 Ma, uplift of the Agrio and Chos Malal fold and thrust belts, east of the Principal Cordillera, led to segmentation of the foreland basin. The Trapa Trapa Formation was deposited in a hinterland basin, with sediment sourced from the east. After ∼6.5 Ma, major contractional deformation shifted westward, resulting in intense folding of the CMS and Trapa Trapa Formation and subsequent thrusting of the western Principal Cordillera over the Central Depression. Our study suggests that deformation progressed toward the eastern foreland during the early to late Miocene and then shifted toward the western forearc during the late Miocene to Pleistocene.

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Stratigraphy, sedimentology, and geothermal reservoir potential of the volcaniclastic Cura-Mallín succession at Lonquimay, Chile

Cited by 15 publications

References 8 publications

Vicariance and dispersal in southern hemisphere freshwater fish clades: a palaeontological perspective

Vicariance and dispersal in southern hemisphere freshwater fish clades: a palaeontological perspective

The South American and Australian percichthyids and perciliids. What is new about them?

Cenozoic Basin Evolution During Alternating Extension and Shortening in the Southern Central Andes Along the Chile-Argentina Border, 37–38°S

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