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    Vol. 31 No. 2 (2024)

  • Vol. 31 No. 1 (2024)

    Cover photo: Exposure of Cretaceous fluvial and aeolian volcaniclastic deposits of the Chubut Group at Los Chivos Hill (Somuncurá-Cañadón Asfalto Basin, Chubut, Argentina). Three members with variable volcaniclastic influence are marked by sharp color changes (for further details see Villegas and Umazano, pp. 13-42, this issue)

  • View of Cerro Padre Laguna (background) and La Cantera stream (foregraound) at Parque Nacional Nahuel Huapi. In the bottom left corner, a debris flow deposit accumulated by the event of February, 2015, which finest fraction plunged into Lago Guillelmo (For further details see Amat et al., pp. 163-184, this issue)

    Vol. 30 No. 2 (2023)

    Special Issue: Landforms, sediments, and soils: Quaternary study cases of Argentina

    Cover Photo: View of Cerro Padre Laguna (background) and La Cantera stream (foreground) at Parque Nacional Nahuel Huapi. In the bottom left corner, a debris flow deposit accumulated by the event of February, 2015, which finest fraction plunged into Lago Guillelmo (For further details see Amat et al., pp. 163-184, this issue)

  • Vol. 30 Núm. 1 (2023)

    Cover Photo: Outcrop view of low-grade metamorphosed sedimentary rocks showing intercalation of pebbly mudstones and laminated mudstones, interpreted as glacimarine deposits. San Luis Formation (Cambrian), San Luis province, Argentina (for further details see Perón Orrillo et al., pp. 3-39, this issue).

  • Vol. 29 No. 2 (2022)

    Cover Photo: Trace fossils present in cores from the Lajas Formation, Neuquén Basin, Argentina. Ophiomorpha irregulaire showing the pelleted wall made by sand and phytodetritus (for further details see Arregui and Rodríguez, pp. 97-120, this issue).

     

  • Vol. 29 No. 1 (2022)

    Cover Photo: Delta plain volcaniclastic sand deposits bearing transported trees in life position (for further details see Umazano et al., pp. 61-65, this volume).

  • Vol. 28 No. 2 (2021)

    Special Issue "Exploring the geochemistry and biogeochemistry of modern and ancient sedimentary systems"

    Cover Photo: Large microbially-induced sedimentary structures created by deformation processes over the tidal flat during extreme storm (for further details see Maisano et al., pp. 121-132, this issue).

  • Vol. 28 No. 1 (2021)

    Cover Photo: Reddish fluvial channel deposit interbedded with aeolian dune-related deposits. Candeleros Formation, La Buitrera Paleontological Locality, Río Negro Province, Argentine Republic (for further details see Pérez Mayoral et al., pp. 37-59, this issue).

  • Vol. 27 No. 2 (2020)

    Cover Photo: Tabular layers of sands and gravelly sands with upper flow regime horizontal lamination interbedded with muds with ripple cross-lamination in a floodplain environment. Valentín Formation, Ullum-Zonda valley, San Juan Province, Argentine Republic (for further details see Blanc et al., pp. 125-162, this issue).

  • Vol. 27 No. 1 (2020)

    Cover Photo: Soil thin section photography of a Btss horizon showing the typical wedge-shaped aggregates. Soil profile (Typic Endoacuert) studied in the northeast of Santiago del Estero province, Argentina (for further details see Moretti et al., pp. 29-53, this issue).

  • Vol. 26 No. 2 (2019)

    Special Issue “Geologic history and Basin analysis of the Austral-Magallanes Basin, southern Patagonia"

    Cover Photo: General regional seismic configuration of the Austral-Magallanes Basin. The regional seismic line illustrates the geometric wedge-shape of the early Foreland Stage strata onto previous sag-thermal deposits (for further details see Gallardo et al., pp. 127-154, this issue).

     

     

  • Vol. 26 No. 1 (2019)

    Cover Photo: Purple-reddish to light orange-reddish, calcareous muddy sandstones of the Peña Colorada Formation (Paleogene), Westernmost Argentine Plateau (for further details see López Steinmetz and Montero-López, pp. 3-17, this issue).

  • Vol. 25 No. 2 (2018)

    Special Issue: "Sedimentary systems from the Austral-Magallanes Basin, Southern Patagonia."

    Cover Photo: Field photograph of one of the Crassostrea orbignyi reefs at Cerro Observación, Miocene of the Austral Basin, Santa Cruz Province (for further details see Parras and Cuitiño pp. 93-115, this issue).

  • Vol. 25 No. 1 (2018)

    Cover Photo: Parabolic dunes visualization in a SRTM 3 arc/sec image from the oriental Pampean region, west center of the province of Buenos Aires (Argentina) (for further details see Contreras et al., pp. 3-17, this issue).

  • Vol. 24 No. 2 (2017)

    Cover Photo: Filaments of cyanobacteria (green color) in a modern sedimentary core, where the surface is colonized by diatoms (brown color at the top) (for further details see Cuadrado & Blasi, pp. 39-73, this issue).

  • Vol. 24 No. 1 (2017)

    Special Issue:" Sedimentación marina profunda en el margen continental Argentino: revisión y estado del conocimiento."

    Cover Photo: Left: typical lower-slope facies in the Mar Del Plata Canyon; upper-left: mudstone intraclast-rich debris-flow deposit; lower-left: sandy turbidite interbedded within countourite sequence (for further details see Bozzano et al., pp. 85-101, this issue). Right: multichannel image of the upper and middle slope in front of the San Jorge Gulf showing depositional and erosional contourite features (for further details see Isolaet al., pp. 45-59, this issue).

  • Vol. 23 No. 2 (2016)

    Cover Photo: Image of the Punta Rasa beach, showing the development of incipient dunes that are controlled by vegetation. For further details see Lopez et al., pp 111-125, this issue.

  • Vol. 23 No. 1 (2016)

    Cover Photo: Image of halite crystals that are common in the Barremian Upper Troncoso Member (Neuquén Basin, Argentina), attesting that the basin behaved as a partially isolated hydrographically depression below sea level at that time. For further details see Gabriele, pp 35-69, this issue.

  • Vol. 22 No. 2 (2015)

    Cover Photo: Transmission optical microscopy image of an eolian sandstone from the De La Cuesta Formation (Permian, Argentina), showing an inverse-graded lamina interpreted to be eolian-ripple migration with abundant coarse-grained sand (light blue shows porosity). For further details see Limarino et al, pp 83-108, this issue.

  • Vol. 22 No. 1 (2015)

    Cover photo: View of the Cerro Chenque in Comodoro Rivadavia, Chubut (Argentina). The lower part of the Miocene shallow-marine Patagoniense strata (Chenque Formation) is exposed. For further details see Cuitiño et al, pp. 3-12, this issue.

  • Vol. 21 No. 2 (2014)

    Special Issue: “Limnogeology in southern South America: tracking enviromental variability from the late glacial to the 21st century”

    Cover photo: Left margin, from top to bottom: foraminifers, gastropods and ostracods;  gypsum crystals in evaporitic facies; micro-fluorescence of RX of laminated lake sediments. Central photo: the littoral zone of Laguna del Venado. For further details see Piovano et al., pp 65-75 and Córdoba et al., pp 139-163, this issue.

  • Vol. 21 No. 1 (2014)

    Cover Photo: Seismic line of the Foreland III phase in the Magallanes-Austral Basin (Chile), showing well defined clinoforms representing outer-shelf, slope and basin-floor settings. For further details see Gallardo, pp.49-68, this issue.

  • Vol. 20 No. 2 (2013)

    Special Issue: "Case studies on the Quaternary and Geomorphology of Argentina."

    Cover Photo: Transmission optical microscopy image of a structured horizon from the pedological mantle of the Misiones Province, showing subangular and angular blocks, few channels, clay coatings, magnetite grains and ferruginous nodules. For further details see Moretti and Morrás, pp 129-142, this issue.

  • Vol. 20 No. 1 (2013)

    Cover Photo: View of the contact between the Lumbrera Formation (Salta Group) and the Quebrada de los Colorados Formation (Payogastilla Group) in the Tin Tin area, Salta (Argentina). For further details see del Papa et al., pp 51-64, this issue.

  • Vol. 19 No. 2 (2012)

    Cover Photo: Scanning electron microscopy image of a petrocalcic horizon with rhombohedra and scalenohedra of calcite in rock holes within a fine matrix (Vertic argiudoll).Photo by P. imbellone. For further detail see Imbellone et al., pp 67-88, this issue.

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