Left: Possible transgressive ravinement surface developed on top of pale brown calcareous and bioturbated deposits. Darker brown calcarenites (upper beds) are filling tube-like cavities. Note reworked ammonite shell on top left. Coin for scale. Right: Undergraduate students during the field-trip to Campanian transitional clastic deposits in Coll de Pal (Berguedà, NE Spain). All the images have a CCBY attribution.
Left: Lake Clifton foreshore to shoreface transition showing the presence of metre-thick trombolitic bioherms that coalesce each other in more proximal areas. Mike Rogerson as scale. Right: Detail of a fresh thrombolite head formed by a clotted texture of millimetre-thick voids filled by gastropods and microbial biofilms, aragonite-stevensite mineral patches and decaying organic matter. All the images have a CCBY attribution.
Left: Undergraduate students exploring a panoramic view over Berguedà basin. Right: Undergraduate students taking some notes from fluvial-dominated settings of the Buntsandstein facies (Figaró, NE Spain). All the images have a CCBY attribution.
Left: Mono Lake is an hyperalkaline saline lake system developed in a hydrologically closed basin located in eastern Sierra Nevada, north-eastern California (USA). The nearshore zone of the lake is covered in mounded carbonate bodies that are growing upon previous organic substrates such as plants or rocky boulders. Right: Me analising flat-topped, sub-horizontal and cyclic palustrine carbonate layers onlapping lacustrine tufa chimneys and substrate encrustations in SW Boardwalk and Lee Vining areas. All the images have a CCBY attribution.
Left: FESEM microscope observations on Lake Clifton thin-sections. Right: Dark-grey palustrine carbonate deposits with evidence of subaerial exposure and filling of cavities (Garumnian facies, Coll de Pal, Berguedà). All the images have a CCBY attribution.
Left: Me standing with a sandstone succession displaying bottom channel-fill sedimentary structures (Vilella Baixa, Spain). Right: Ripple, dune and herringbone sedimentary structures on siliciclastic deposits. All the images have a CCBY attribution.
Left: Teaching Undergraduate students in Fuente de Torrijos (Jaca Basin, NE Spain). Showing superposition of clastic deltaic sequences. Right: Teaching Undergraduate students in the fluvial-dominated clastic deposits from the Buntsandstein facies (Middle Triassic, Figaró, Spain). All the images have a CCBY attribution.
Left: Karst zone developed in subaerially-exposed skeletal carbonates (grey colour) showing decimetre-scale collapse and breccia fabrics. A well-developed, nodular and ferruginised hard-ground (orange colour) is filling the cavities and pipes left by the erosion. Upper Cretaceous of the Sant Corneli anticline, Tremp basin (Spain). Right: Outer platform carbonate-to-shale deposits displaying collapse features (listric faults and slumped beds), Upper Cretaceous of the Sant Corneli anticline, Tremp basin (Spain). All the images have a CCBY attribution.
Left: Cross-stratified, siliciclastic, tidal dunes with capped ripples and remains of clay chips (Lower Eocene, Baronia Formation, Àger, NE Spain). Right: Rubble floatbreccias accumulated in macrovugs hosted in hot-spring continental limestones (probably Rapolano, Pleistocene, Tuscany). All the images have a CCBY attribution.
Me and Rene Hanssen sampling microbial mats in Paliano hot-spring system in Italy. Samples are processed for metagenomic analyses to understand the microbial diversity associated to specific mineral and fabric occurrences in travertine-forming settings. All the images have a CCBY attribution.
Left: Coarsening and thickening-upwards deltaic clastic successions of the Eocene Atarés Delta (Jaca Basin). Upper levels are intensely bioturbated. Right: Detail of analogous clastic-dominated deltaic deposits in mixed flats. Note undulous surfaces suggesting dewatering strutures (bottom) and vertical bioturbation (top). All the images have a CCBY attribution.
Left: Calcite rafts floating in the air-water interface of hot-spring systems in the surroundings of Mono Lake area (California). Right: Highly diverse and colourful microbial biofilms inhabit the hottest areas surrounding the thermal flows in Bullicame (Italy). Carbonate crusts are formed in association to microbial mat communities in proximal springs areas. All the images have a CCBY attribution.
Left: Basin plain turbidite deposits being analysed by Undergraduate students at Urdués (Jaca Basin, NE Spain). Nicely exposed symmetrical ripples on top surfaces. Right: Channel-fill turbidite deposits with tabular morphologies (Rapitán channel) at Fuente de Torrijos (Jaca Basin, NE Spain). All the images have a CCBY attribution.
Left: Anna Gandin showing how carbonate microfabrics are formed in a hot-spring point (Paliano, Italy). Right: Alex Brasier checking the snorkel equipment in an hyposaline puddle around Lake Clifton (Australia). All the images have a CCBY attribution.
Left: University of Hull's Bachelor students in Almeria (Spain). Incredible outcrop-scale geometries in turbidite geobodies made up of coarse sandstone to gravel deposits. Right: VU Amsterdam's Bachelor students taking notes in a hot-spring artificial pool forming colourful calcite raft accumulations in Paliano (Italy). All the images have a CCBY attribution.
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