M. Pondrelli
YOU?
Author Swipe
View article: Geomorphological Evidence of Ice Activity on Mars Surface at Mid-Latitudes
Geomorphological Evidence of Ice Activity on Mars Surface at Mid-Latitudes Open
Extensive radar investigations, observed spectral signatures, geomorphological, and paleoclimate modeling support the presence of mid- to low-latitude ground ice on Mars. The presence of near-surface ice and glacial features has been propo…
View article: Compositional data analysis and hydrogeochemistry of the Continental Intercalaire aquifer (northwestern Africa): A regional synthesis
Compositional data analysis and hydrogeochemistry of the Continental Intercalaire aquifer (northwestern Africa): A regional synthesis Open
The Continental Intercalaire (CI) aquifer, spanning Algeria, Tunisia, and Libya, is analyzed using piezometry, major ions, and stable isotopes (δ2H, δ18O) to track flow paths from recharge to discharge areas. A new piezometric map was gene…
View article: Record of a sea level drop in the lower Mississippian limestones near Passo di Monte Croce Carnico (Carnic Alps, Italy)
Record of a sea level drop in the lower Mississippian limestones near Passo di Monte Croce Carnico (Carnic Alps, Italy) Open
The lower Carboniferous succession of the Carnic Alps represents the best-preserved example of such stratigraphic interval within the Alps, thus providing crucial insights for paleogeographic and paleoclimatic reconstructions. This researc…
View article: Water in the Ahnet Basin (Algeria): Traces of the Wet Past of the Sahara Desert as an Analog for the Hesperian-Amazonian Transition in Arabia Terra (Mars)
Water in the Ahnet Basin (Algeria): Traces of the Wet Past of the Sahara Desert as an Analog for the Hesperian-Amazonian Transition in Arabia Terra (Mars) Open
Introduction During the whole Holocene, the Sahara Desert underwent a series of cyclic climatic fluctuations resulting in alternating arid and humid phases. Current arid conditions began ~6,000 BP. Prior to that, from ~14,500 to ~6,000 BP,…
View article: Investigation Of A Potential Endorheic Basin In Terra Cimmeria, Mars
Investigation Of A Potential Endorheic Basin In Terra Cimmeria, Mars Open
Potential endorheic basins that are not contained within an impact crater have been studied only to a limited extent on Mars. These basins, characterised by the absence of outgoing channels, are of particular interest in planetary science …
View article: Noachian-Hesperian Sedimentary Evolution of Arabia Terra, Mars: Preliminary Insights
Noachian-Hesperian Sedimentary Evolution of Arabia Terra, Mars: Preliminary Insights Open
IntroductionThe documented climate change on Mars between the late Noachian and the Hesperian marked a shift from relatively humid to arid-cold conditions (e.g., McLennan et al., 2019 and references therein). While the broad trajectory of …
View article: Preliminary analysis of aeolian bedforms present in the Eberswalde preserved delta, Mars
Preliminary analysis of aeolian bedforms present in the Eberswalde preserved delta, Mars Open
Keywords:Eberswalde crater, aeolian bedforms, atmospheric circulation, environmental changes. Introduction and objectives The Eberswalde crater (Fig. 1) (Malin and Edgett, 2003), located at 33° W–24° S, lies to the north-northeast of Holde…
View article: Thermal State and Physical Properties of Water Ice in Ceres' Oxo Crater: Implications for Surface geomorphology and Evolution
Thermal State and Physical Properties of Water Ice in Ceres' Oxo Crater: Implications for Surface geomorphology and Evolution Open
IntroductionCeres provides key insights into volatile-rich body evolution. Dawn showed Ceres' impact-modified surface involves subsurface volatiles. Recent craters reveal the shallow subsurface and ongoing geological activity. Oxo crater, …
View article: Mapping and Classification of Enceladus’s Linear Structures
Mapping and Classification of Enceladus’s Linear Structures Open
Enceladus, Saturn’s sixth-largest moon (diameter: ~504 km) [1], is one of the geologically active bodies of the Solar System. Its icy shell its characterized by linear structures of tectonic origin that are the focus of this study [2…
View article: GeoPlaNet project: a transnational collaboration for planetarygeosciences
GeoPlaNet project: a transnational collaboration for planetarygeosciences Open
The spectacular progress of space exploration during the last 30 years has allowed the developmentof Planetary Geosciences, an intrinsically interdisciplinary field of sciences joining together geologists,geophysicists, geochemists, etc. M…
View article: Age and orbital forcing in the upper Silurian Cellon section (Carnic Alps, Austria) uncovered using the WaverideR R package
Age and orbital forcing in the upper Silurian Cellon section (Carnic Alps, Austria) uncovered using the WaverideR R package Open
The type-Silurian Cellon section in the Carnic Alps in Austria underpins much of the current Silurian conodont zonations, forming the basis for the Silurian timescale. However, the Silurian record of the Cellon section lacks radiometric an…
View article: Groundwater‐Controlled Deposition of Equatorial Layered Deposits in Central Arabia Terra, Mars
Groundwater‐Controlled Deposition of Equatorial Layered Deposits in Central Arabia Terra, Mars Open
Equatorial Layered Deposits (ELDs) reveal aspects of past depositional environments useful for timing climatic and geological events on Mars. However, their formation has several contending hypotheses which reflect a diverse range of possi…
View article: Protracted Hydrogeological Activity in Arabia Terra, Mars: Evidence From the Structure and Mineralogy of the Layered Deposits of Becquerel Crater
Protracted Hydrogeological Activity in Arabia Terra, Mars: Evidence From the Structure and Mineralogy of the Layered Deposits of Becquerel Crater Open
The formation of layered mounds on Mars remains a major topic of debate, with the relationship between their deposition and chemical alteration a major aspect still to be constrained. The association these deposits have with hydrated miner…
View article: gmap - qgis training material: Aram Chaos (Mars)
gmap - qgis training material: Aram Chaos (Mars) Open
Aram Chaos is a more than 250 km large crater characterized by the presence of Chaotic Terrains forming mesas and knobs, associated with the outflow channel of Ares Vallis. The Chaotic Terrains are unconformably embayed and locally superpo…
View article: gmap - qgis training material: Aram Chaos (Mars)
gmap - qgis training material: Aram Chaos (Mars) Open
Aram Chaos is a more than 250 km large crater characterized by the presence of Chaotic Terrains forming mesas and knobs, associated with the outflow channel of Ares Vallis. The Chaotic Terrains are unconformably embayed and locally superpo…
View article: Depositional Controls of the Layered Deposits of Arabia Terra, Mars: Hints From Basin Geometries and Stratigraphic Trends
Depositional Controls of the Layered Deposits of Arabia Terra, Mars: Hints From Basin Geometries and Stratigraphic Trends Open
An extensive distribution of water‐altered equatorial layered deposits (ELDs) characterizes the densely cratered terrain of Arabia Terra (AT), Mars. The majority of these deposits reside within craters and are easily identified by laterall…
View article: The pre-Variscan sequence of the Carnic Alps (Italy-Austria)
The pre-Variscan sequence of the Carnic Alps (Italy-Austria) Open
The Pre-Variscan Sequence of the Carnic Alps is exposed across the state border between north-east Italy and Austria. It includes Middle Ordovician to lower Pennsylvanian rocks that, although affected by both Variscan and Alpine orogeneses…
View article: Paleotemperature record of the Middle Devonian Kačák Episode
Paleotemperature record of the Middle Devonian Kačák Episode Open
The Middle Devonian Epoch, ~ 393–383 million years ago, is known for a peak in diversity and highest latitudinal distribution of coral and stromatoporoid reefs. About 388 million years ago, during the late Eifelian and earliest Givetian, c…
View article: Astrobiology vs Geology investigations: good practices in the framework of planetary missions
Astrobiology vs Geology investigations: good practices in the framework of planetary missions Open
Astrobiology is an interdisciplinary science involving many different sources, and disciplines including geology. Biosignature identification on Earth is consequential and strictly linked with the definition of a solid geological context i…
View article: Geological Mapping, Topography and Stratigraphy of Thrace and Thera Macula, Europa
Geological Mapping, Topography and Stratigraphy of Thrace and Thera Macula, Europa Open
Introduction: Chaotic terrains on the icy moon Europa are among the youngest surface features within the satellite’s visible geological history [1]. These regions appear as highly disrupted surfaces formed by irregular groups of isol…
View article: GMAP – European Mapping efforts for Geologic Mapping of Planetary bodies
GMAP – European Mapping efforts for Geologic Mapping of Planetary bodies Open
Introduction: One essential part of NASA´s planetary geologic mapping program [1] is to coordinate and standardize the geological map process and products in planetary science. This important role is taken by the Astrogeology Team as …
View article: Geological and geomorphological mapping of Martian sedimentary deposits: an attempt to identify current practices in mapping and representation
Geological and geomorphological mapping of Martian sedimentary deposits: an attempt to identify current practices in mapping and representation Open
The quantity, quality, and type of available datasets on Mars have improved in the last couple of decades. Context Camera (CTX) (Malin et al., 2007) on board the NASA Mars Reconnaissance Orbiter (MRO) provides a global coverage with an ave…
View article: Uppermost Ordovician to lowermost Devonian conodonts from the Valentintörl section and comments on the post Hirnantian hiatus in the Carnic Alps
Uppermost Ordovician to lowermost Devonian conodonts from the Valentintörl section and comments on the post Hirnantian hiatus in the Carnic Alps Open
A detailed biostratigraphic investigation has been carried out by means of conodonts in the uppermost Ordovician-lowermost Devonian sector of the Valentintörl cliff, located in the Austrian part of the Carnic Alps. Biostratigraphic data do…
View article: Groundwater Control and Process Variability on the Equatorial Layered Deposits of Kotido Crater, Mars
Groundwater Control and Process Variability on the Equatorial Layered Deposits of Kotido Crater, Mars Open
Understanding the origin of the Hesperian‐aged sulfate‐bearing Equatorial Layered Deposits (ELDs) is crucial to infer Mars' climatic conditions during their formation and to assess their habitability potential. We investigated well‐exposed…
View article: Geological Evidence of Planet‐Wide Groundwater System on Mars
Geological Evidence of Planet‐Wide Groundwater System on Mars Open
The scale of groundwater upwelling on Mars, as well as its relation to sedimentary systems, remains an ongoing debate. Several deep craters (basins) in the northern equatorial regions show compelling signs that large amounts of water once …
View article: The Dallol Geothermal Area, Northern Afar (Ethiopia)—An Exceptional Planetary Field Analog on Earth
The Dallol Geothermal Area, Northern Afar (Ethiopia)—An Exceptional Planetary Field Analog on Earth Open
The Dallol volcano and its associated hydrothermal field are located in a remote area of the northern Danakil Depression in Ethiopia, a region only recently appraised after decades of inaccessibility due to severe political instability and…