A5052798192- Geology and Paleoclimatology Research
- Landslides and related hazards
- Climate change and permafrost
- Cryospheric studies and observations
- Geological formations and processes
- Radioactivity and Radon Measurements
- Building materials and conservation
- Hydrology and Drought Analysis
- Precipitation Measurement and Analysis
- nanoparticles nucleation surface interactions
- Aeolian processes and effects
- Chemical Thermodynamics and Molecular Structure
- Pleistocene-Era Hominins and Archaeology
- Soil erosion and sediment transport
- Climate variability and models
- Agriculture, Soil, Plant Science
- Evolution and Paleontology Studies
- Phase Equilibria and Thermodynamics
- Hydrology and Watershed Management Studies
- Radioactive contamination and transfer
- Geological and Geochemical Analysis
- Soil Geostatistics and Mapping
University of the West of England
1998-2024
University of Edinburgh
1995-1998
Rock‐slope failures ( RSF s) constitute significant natural hazards, but the geophysical processes that control their timing are poorly understood. However, robust chronologies can provide valuable information on environmental controls occurrence: inform models of activity in response to climatic forcing. This study uses Schmidt‐hammer exposure‐age dating SHD ) boulder deposits construct a detailed regional Holocene chronology frequency and magnitude small rock‐slope SRSF Jotunheimen,...
Landform transitions are defined as intermediate forms that represent transient developmental stages between conventional landform types. This study evaluates possible cases of from pronival (protalus) ramparts to moraine ridges, and lobate rock glaciers (protalus lobes) at the foot headwall Smørbotn cirque in southern Norway. The five landforms had been previously classified ramparts. We conclude only two (Smørbotn 2 3) undisputed, active ramparts, which developed under seasonal-freezing...
Two small relict blockstreams occur at Insteheia, a col 910 m asl on the watershed between Valldalen and Tafjorden (Møre og Romsdal), southern Norway. Both display morphological sedimentological characteristics indicative of boulder accumulations that have moved downslope by solifluction, probably under permafrost climatic regime. These comprise preferred orientation dip patterns boulders; inverse grading, with surface boulders overlying successively finer, well-sorted cobble, pebble...
Periglacial patterned ground (sorted circles and polygons) along an altitudinal profile at Juvflya in central Jotunheimen, southern Norway, is investigated using Schmidt‐hammer exposure‐age dating (SHD). The surfaces exhibit R‐value distributions with platycurtic modes, broad plateaus, narrow tails, a negative skew. Sample sites located between 1500 1925 m a.s.l. indicate distinct gradient of increasing mean R‐values towards higher altitudes interpreted as chronological function. An...
Surface exposure–age dating was applied to rock surfaces associated with ice‐marginal moraines at elevations of ~1520–1780 m a.s.l. on the slopes Galdhøpiggen and Glittertinden, two highest mountains in Scandinavia located Jotunheimen central southern Norway. This is important for understanding pattern timing wastage Scandinavian Ice Sheet Younger Dryas–Holocene transition. Cosmogenic exposure (here 10 Be dating) boulders from moraine ridges yielded overall mean ages (corrected...
Abstract Schmidt-hammer exposure-age dating (SHD) of boulders on cryoplanation terrace treads and associated bedrock cliff faces revealed Holocene ages ranging from 0 ± 825 to 8890 1185 yr. The cliffs were significantly younger than the inner treads, which tended be outer treads. Radiocarbon dates regolith 3854 4821 cal yr BP (2σ range) indicated maximum rates recession ~0.1 mm/yr, suggests onset formation before last glacial maximum. Age, angularity, size clasts, together with planation...
Application of calibrated Schmidt-hammer surface-exposure dating (SHD) to the run-out debris a rock avalanche at Alstadfjellet, Valldalen, southern Norway, has yielded ages that are consistent within uncertainties with terrestrial cosmogenic 10Be for debris. SHD calibration was based on young and old control sites were, respectively, recent road cuts / rockfall boulders known age, Younger Dryas moraines which had been obtained. Three equations were generated different correction factors from...
Schmidt-hammer exposure-age dating (SHD) was used to evaluate the surface age, dynamics and evolution of eight talus (scree) slopes located between ~520 ~1010 m a.s.l. in upper Jostedalen area southern Norway. Statistically significant differences mean R-values were found but there no consistent difference three mid- lower-slope positions, two operators, or first second impacts from same boulders. A new regional age-calibration equation yielded SHD ages ranging 8425 ± 700 years 2620 740...