Stratigraphy and palynology of a late Paleozoic glacial paleovalley in the Andean Precordillera, Argentina

Limarino, Carlos Óscar; Alonso-Muruaga, Pablo J.; Ciccioli, Patricia L.; Loinaze, Valeria Susana Pérez; Césari, Silvia N.

doi:10.1016/j.palaeo.2014.07.030

Cited by 40 publications

(17 citation statements)

References 65 publications

(99 reference statements)

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“…This important gap between the Devonian and the Pennsylvanian rocks confirms the erosion by glacial systems described in other localities of the Tarija Basin (Di Pasquo 2003 and other western basins of South America (e.g. Azcuy et al 2007;Limarino et al 2014). …”

supporting

confidence: 79%

Integrated study of fauna and microflora from the Early Devonian (Pragian–Emsian) of northwestern Argentina

et al. 2015

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The Devonian System in northern Argentina has been broadly analysed, but details of its lithologies, biostratigraphy and fossil content have not been presented in a comprehensive study. We performed the first integrative analysis of the palynological and macrofossil content from the Pescado Formation at the Zenta Range, Argentina. We define a new species of cryptospore and extend the stratigraphic record of the ichnogenus Psammichnites isp. for South America. The stratigraphic ranges of the palynomorphs suggest a time span from the ?late Lochkovian to Pragian -earliest Emsian, but the co-occurrences of key invertebrates narrow the age of the beds to the late Pragian and early Emsian. Moreover, sedimentary analysis indicates a proximal shoreface -foreshore depocenter during this time range for the Zenta region. The contraction phase of the basin during the middle Pragian and Emsian is evidenced by the presence of sand bodies at the top of the column and the higher supply of terrigenous components. During this regression event, a low diversity Malvinokaffric Realm brachiopod assemblage occurs, with dominance of Australospirifer hawkinsi. The predominance of the latter species during this event is coeval with the first decline of the Malvinokaffric Realm in the neighbouring Paraná basin.

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supporting

confidence: 79%

Integrated study of fauna and microflora from the Early Devonian (Pragian–Emsian) of northwestern Argentina

et al. 2015

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“…Most recent studies on late Paleozoic glacial deposits of southwestern Gondwana were focused on the Andean proto-margin of the supercontinent (mostly in Argentina) where superb exposures are favored by the present arid climate and mountainous landscape (López-Gamundí and Martínez, 2000;Kneller et al, 2004;Dykstra et al, 2006;Stark and Del Papa, 2006;Isbell, 2010;Gulbranson et al, 2013;Henry et al, 2014;Limarino et al, 2014b). In these areas, deposition took place in arc-related and foreland basins (Limarino et al, 2006;Spalletti et al, 2010) that were invaded by topographically constrained glaciers draining from ice caps on former mountain chains (e.g., Protoprecordillera).…”

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confidence: 99%

Sedimentary record of a fluctuating ice margin from the Pennsylvanian of western Gondwana: Paraná Basin, southern Brazil

Vesely

Trzaskos

Kipper

et al. 2015

Sedimentary Geology

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The Paraná Basin is a key locality in the context of the Late Paleozoic Ice Age (LPIA) because of its location east of the Andean proto-margin of Gondwana and west of contiguous interior basins today found in western Africa. In this paper we document the sedimentary record associated with an ice margin that reached the eastern border of the Paraná Basin during the Pennsylvanian, with the aim of interpreting the depositional environments and discussing paleogeographic implications. The examined stratigraphic succession is divided in four stacked facies associations that record an upward transition from subglacial to glaciomarine environments. Deposition took place during deglaciation but was punctuated by minor readvances of the ice margin that deformed the sediment pile. Tillites, well-preserved landforms of subglacial erosion and glaciotectonic deformational structures indicate that the ice flowed to the north and northwest and that the ice margin did not advance far throughout the basin during the glacial maximum. Consequently, time-equivalent glacial deposits that crop out in other localities of eastern Paraná Basin are better explained by assuming multiple smaller ice lobes instead of one single large glacier. These ice lobes flowed from an ice cap covering uplifted lands now located in western Namibia, where glacial deposits are younger and occur confined within paleovalleys cut onto the Precambrian basement. This conclusion corroborates the idea of a topographically-controlled ice-spreading center in southwestern Africa and does not support the view of a large polar ice sheet controlling deposition in the Paraná Basin during the LPIA.

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“…The oldest glaciomarine sedimentary rocks reported as first cycle of LPIA episodes in this study is the Lower Carboniferous dropstones of the Rebak and Chepor members. These rocks can be correlated with a number of global glaciation events, such as the Poti Formation (Amazonas Basin, Brazil), Faro Formation (Parnaíba Basin, Brazil), Parana Basin Brazil, Kaka Formation (Copacabana Basin, Bolivia), the Faro Formation of the Amazon Basin, and the Jandiatuba Formation of the Solimões Basin (Caputo, Melo, Streel, & Isbell, ; Diaz‐Martinez, Vavrdova, Bek, & Isaacson, ; Gulbranson et al, ; Limarino, Alonso‐Muruaga, Ciccioli, Perez Loinaze, & Césari, ).…”

Section: Discussionmentioning

confidence: 99%

Source and origin of Late Paleozoic dropstones from Peninsular Malaysia: First record of Mississippian glaciogenic deposits of Gondwana in Southeast Asia

et al. 2020

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This study reports several Late Paleozoic dropstone‐bearing formations in Peninsular Malaysia which were not previously investigated. Additionally, the source, formation mechanisms, and correlation to the global Late Paleozoic Ice Age (LPIA) of these dropstones are discussed. Dropstones occur as subrounded to rounded single clasts ranging in size from 0.5 to 20 cm, scattered in red mudstone, black shales, sandstones and shales, and are composed of granite, quartzite, and sandstone. Occurrence of dropstones as rounded, single clasts, and soft‐sediment deformation of the host rock with striations in the dropstones suggest a glaciomarine origin. Precambrian basement rocks and Cambrian–Ordovician quartzite and sandstones are the main sources of the dropstones. Dropstones hosted by shallow‐marine sediments are formed by dropping of clasts from icebergs, while, dropstones present in deep‐marine sediments are formed by dropping of clasts from an ice sheet. The oldest glaciomarine rocks of the Rebak and Chepor members (Singa Formation) can be correlated to the Early Carboniferous global glaciation of the LPIA episode of Gondwana. These sediments are considered as the first record of Lower Carboniferous (Mississippian) glaciomarine rocks in Southeast Asia. However, the glaciomarine deposits of the Kentut and Bukit Raja members (Singa and Kubang Pasu formations, respectively) are correlated with the global Middle Carboniferous glaciation. In addition, the glaciomarine deposits of the “undifferentiated” member (Kubang Pasu Formation), Ulang and Selang members (Singa Formation), as well as the Kenny Hill Formation, are correlative to the Late Carboniferous‐Early Permian glaciation episode known as the apex of the LPIA. These results confirm the paleomagnetic and paleontological data which suggest that the Sibumasu Terrane initially was attached to the Late Paleozoic Gondwana.

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Stratigraphy and palynology of a late Paleozoic glacial paleovalley in the Andean Precordillera, Argentina

Cited by 40 publications

References 65 publications

Integrated study of fauna and microflora from the Early Devonian (Pragian–Emsian) of northwestern Argentina

Integrated study of fauna and microflora from the Early Devonian (Pragian–Emsian) of northwestern Argentina

Sedimentary record of a fluctuating ice margin from the Pennsylvanian of western Gondwana: Paraná Basin, southern Brazil

Source and origin of Late Paleozoic dropstones from Peninsular Malaysia: First record of Mississippian glaciogenic deposits of Gondwana in Southeast Asia

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