![(A) Summary interpolation of the extent of bedrock geologic units based on in situ mapping. The width of the mapping corridor is ∼120 m. White dots are positions occupied during the traverse for which images are available for mapping. (B) Summary of interpreted stratigraphic relationships between identified lithologic units along the Jezero crater floor traverse (A and B adapted from Crumpler et al., 2023; Fig. 19). (C) Orbital image of Jezero crater floor with the path of the Perseverance overlaid in white. (D) Inset of the crater floor campaign, with all Máaz abrasion patches shown (Guillaumes, Montpezat, Bellegarde, and Alfalfa), and the OEB (Octavia E. Butler) landing site indicated. The Guillaumes and Alfalfa abrasions are highlighted, as they are the focus of this article (altered from NASA). -- [Astrobiology (journal)]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/The-Possible-Aqueous.png?resize=1200%2C718&ssl=1)
[Astrobiology (journal)] Home to a lake around 4 billion years ago, Jezero Crater is a unique location to study the interplay between igneous processes and aqueous alteration on ancient Mars.
geology
Posted inVenus
Venus: Dead? Far From It
[ETH Zurich] Simulations conducted by researchers at ETH Zurich suggest a strong likelihood that Venus’s rift valleys are still geologically active rather than being mere relics of a bygone era, […]
Posted inMars
Mars Curiosity Rover Finds Evidence Of An Ancient Sandstorm
[NASA] Billions of years ago, an hours-long Martian sandstorm blew so intensely that sand ripples began to climb upon one another as they moved across the surface.
Posted inMars
Perseverance Rover Provides A Record of Ancient Mars Impacts
[NASA] Old rocks exposed on the rim of Jezero Crater preserve a roughly 4-billion-year-old cosmic “weather report” from the solar system’s most dynamic era.
Posted inImpact events
Asteroid Assault Made Ancient Earth Too Hot And Chaotic For Continents To Form
[Curtin University] New research led by Curtin University and QUT (Queensland University of Technology) has revealed repeated asteroid impacts may have been the dominant force shaping the early Earth, delivering […]
Posted inNews Summary Archives, Status Report
Hot life in Antarctica: A Novel Metabolically Versatile Pyrodictiaceae Genus Thriving At A Volcanic–cryosphere–marine Interface
Deception Island fumaroles in Antarctica represent rare environments where extreme heat intersects with cryospheric and marine conditions, creating remarkable environmental gradients.
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Status Report
Planetary Tomography: Towards Imaging Earth’s Large-scale Structures By Directional Geoneutrino Detection With Ocean Bottom Detector
Editor’s note: when we start to examine other worlds more closely we are going to need tools that allow us to get the best possible understanding of those worlds’ construction […]
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Biogeochemical Cycles & Geobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Exploration Gear & Tech, Gaia - Planetary Perspectives, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Polar / Alpine Expeditions, Press Release, Water/Hycean Worlds & Oceanography
Ice Planet Recon: Giant Fan-shaped Geological Structure Discovered Beneath East Antarctica
Editor’s note: there are currently two advanced missions heading for the jovian system – Europa Clipper and ESA Juice – to study icy Europa and the other icy worlds orbiting […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Desert Worlds, Exploration Gear & Tech, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Mars, Status Report
Mesas Of Layered Sedimentary Rocks In Valles Marineris
Valles Marineris, like the Grand Canyon in northern Arizona, provides a spectacular look at the geologic history via layered sediments that get older with depth.
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Mapping, Geodesy, Cartography, Bathymetry, Mars, Press Release
Earth And Mars Interior Structures Set By Re-melting Of The First Solid Mantle
Magma ocean crystallisation sets up the early structure and long-term evolution of terrestrial planets. Recent seismic evidence signals the presence of a silicate layer at the base of Mars’ mantle.