Pablo Joaquín Alonso MuruagaUniversidad de Buenos Aires | UBA · Department of Geology
Pablo Joaquín Alonso Muruaga
PhD Geological Sciences
About
16
Publications
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Introduction
My research is related to sedimentology, ichnology and stratigraphy, mainly involving process based sedimentology, trace fossil studies, and its integration into sedimentary facies analysis, in order to reconstruct ancient depositional environments and interpret their possible sequence stratigraphic framework.
Additional affiliations
March 2011 - present
Publications
Publications (16)
The southwestern margin of South America offers a complete record of the Late Paleozoic Ice Age (LPAI) that affected the Gondwana supercontinent. The tripartite division of LPIA glacial episodes has been refined with the help of new radiometric dates and biostratigraphic (flora and fauna) zonations in recent years to five shorter-lived discrete eve...
The western margin of Gondwana records evidence of mid-Carboniferous glaciation (Visean- Bashkirian) in the strata of the Paganzo Basin and adjacent areas. Previous studies focused on constraining the orientations of ice flow and generalizing the extent and occurrence of glacial ice in the basin. However, there is uncertainty occurs concerning the...
En esta contribución se analiza el registro estratigráfico de las unidades carboníferas y pérmicas tempranas de la Cuenca Calingasta-Uspallata, incluyendo a las formaciones Agua de Jagüel, Hoyada Verde, Tres Saltos y Del Ratón en la Precordillera, junto con las formaciones San Ignacio y Agua Negra en la Cordillera Frontal. El análisis de estas unid...
Fjord systems, represented by glacial diamictites and postglacial transgressive shales, formed in the basins of western Argentina during the late Carboniferous Gondwana glaciation. Well exposed fjord deposits of the Guandacol Formation were studied in the Loma de Los Piojos region (Protoprecordillera), where they fill a 2.9 km wide paleovalley with...
The Andalhuala Formation (Upper Miocene - Lower Pliocene) crops out at different localities of Catamarca, Tucumán, and Salta provinces. It is mainly composed by mudstones, sandstones and conglomerates with sporadic tuffaceous beds, recording continental deposition related to different fluvial settings. At the Encalilla locality (Tafí del Valle, Tuc...
The South American caviomorph ichnogenus Tracheria troyana is reevaluated here based on recently discovered specimens that allow a more thorough investigation of footprint taphonomy and ichnotaxonomy. The footprints include detailed autopodium morphology and more complete gait patterns than previously reported. The redefinition of T. troyana involv...
This paper deals with the stratigraphic nomenclature, paleoenvironmental evolution, fossil assemblages and age of the Carboniferous and Permian units outcropping in the northern Precordillera. The Mississippian stratigraphy is characterized in the type area of the Angualasto Group (sierra de Malimán) and the relations with other sequences of simila...
Early Miocene shallow marine deposits in the region of Lago Posadas-Meseta Belgrano (Argentina)
represent part of the “Patagoniense” transgression, an Atlantic marine incursion that flooded large part of Patagonia, including the Austral (foreland) Basin (southern Patagonia). These deposits, referred as El Chacay (Argentina) or Guadal (Chile) format...
A new locality where Carboniferous glacial diamictite appears confined to paleovalleys is described in the north of the Argentinian Precordillera. The glacial deposits of the lower part of the Carboniferous Quebrada Larga Formation are divided in three stratigraphic intervals, all of them confined to a paleovalley carved into the granitic and high-...
The postglacial interval of the Upper Carboniferous Hoyada Verde Formation of western Argentina contains an ichnofauna dominated by Psammichnites plummeri and Psammichnites implexus, with minor occurrences of Ptychoplasma vagans, Treptichnus bifurcus, Lingulichnus verticalis, Protovirgularia isp., Lockeia isp., Palaeophycus isp., scarce arthropod t...
Despite a century of paleontological work in Neogene sequences of northwestern Argentina there is still much to learn about the biotic diversity in this area during Pliocene times. We report a rich microvertebrate assemblage recovered from Late Pliocene deposits of Uquía Formation, Jujuy Province, northernmost Argentina. Taxa represented in the stu...
Several trace fossil assemblages have been recorded in the upper Paleozoic Paganzo and Calingasta-Uspallata basins of northwestern Argentina. In the Paganzo Basin, ichno-fossil assemblages are widespread, being present in both the Lower and Upper sections of the Paganzo Group. The Mermia, depauperate Cruziana and depauperate Mermia Ichnofacies are...
