Glacier-permafrost interactions are investigated to understand glacial-hydrological influence along a partly glacierised valley on the NE flank of Snøhetta massif, Dovrefjell, southern Norway. Of particular interest is how processes controlled by hydrological connection between landforms. Field mapping identified an ice-marginal landsystem comprising polythermal glacier, proglacial lake, ice-co...

Early Cretaceous body and trace fossils in Victoria, Australia, establish the oldest known presence of parastacid crayfish (Decapoda: Astacidea, Parastacoidea) in freshwater environments of Australia, and the oldest known crayfish in Gondwana. Parastacid body fossils, comprised of a partial abdomen (Palaeoechinastacus australianus, gen. et sp. nov.) and two chelae, are from a fluvial deposit in...

Thermokarst is a land surface lowered and disrupted by melting ground ice. Thermokarst is a major driver of landscape change in the Arctic, but has been considered to be a minor process in Antarctica. Here, we use ground-based and airborne LiDAR coupled with timelapse imaging and meteorological data to show that 1) thermokarst formation has accelerated in Garwood Valley, Antarctica; 2) the rate...

Earth has sustained continental glaciation several times in its past. Because glaciers ground to low elevations, sedimentary records of ice contact can be preserved from regions that were below base level, or subject subsidence. In such regions, glaciated pavements, ice-contact deposits as glacial till with striated clasts, and glaciolacustrine glaciomarine strata dropstones reveal clear signs ...