Chemical Weathering in Fluvial Sediments


How does climate affect chemical weathering observed in fluvial sediments across the Earth? Can we use chemical weathering indices to interpret climate in siliciclastic fluvial sediments? 

Publications


Limited bioweathering by cyanobacteria in cold, nutrient-limited conditions: Implications for microbe-mineral interactions and aquatic chemistry in cold environments


Cansu Demirel-Floyd, Gerilyn S Soreghan, JG Floyd, ME Elwood Madden

Geomicrobiology Journal, vol. 41, Taylor \& Francis, 2024, pp. 672--690


Assessing Weathering, Pedogenesis, and Silt Generation in Granitoid-Hosted Soils From Contrasting Hydroclimates


Alicia L Bonar, Gerilyn S Soreghan, Megan E Elwood Madden

Journal of Geophysical Research: Earth Surface, vol. 128, 2023, pp. e2023JF007095


Cyanobacterial weathering in warming periglacial sediments: Implications for nutrient cycling and potential biosignatures


Cansu Demirel-Floyd, Gerilyn S Soreghan, Megan E Elwood Madden

Permafrost and Periglacial Processes, vol. 33, 2022, pp. 63--77


Significance of the terrestrial sink in the biogeochemical sulfur cycle


Young Ji Joo, Min Sub Sim, Megan E Elwood Madden, Gerilyn S Soreghan

Geophysical Research Letters, vol. 49, 2022, pp. e2021GL097009


Effects of mass wasting on the physiochemical properties of fluvial sediments in Puerto Rico following Hurricane Maria


NDS Webb, NR Regmi, GS Soreghan, AS Elwood Madden, J Sylvester, F Cartagena Colon, C Demirel-Floyd, ME Elwood Madden

Journal of Geophysical Research: Earth Surface, vol. 127, 2022, pp. e2021JF006509


Quantification of particle shape by an automated image analysis system: A case study in natural sediment samples from extreme climates


Young Ji Joo, Anastasia M Soreghan, Megan E Elwood Madden, Gerilyn S Soreghan

Geosciences Journal, vol. 22, The Geological Society of Korea Seoul, 2018, pp. 525--532


Chemical weathering trends in fine-grained ephemeral stream sediments of the McMurdo Dry Valleys, Antarctica


Kristen R Marra, Megan E Elwood Madden, Gerilyn S Soreghan, Brenda L Hall

Geomorphology, vol. 281, Elsevier, 2017, pp. 13--30


Chemical and physical weathering in a hot-arid, tectonically active alluvial system of Anza Borrego Desert, California


Young Ji Joo, Megan E Elwood Madden, Gerilyn S Soreghan

Sedimentology, vol. 63, 2016, pp. 1065--1083


Silt production as a function of climate and lithology under simulated comminution


Gerilyn S Soreghan, Young Ji Joo, Megan E Elwood Madden, Sarah C Van Deventer

Quaternary International, vol. 399, Pergamon, 2016, pp. 218--227


BET surface area distributions in polar stream sediments: Implications for silicate weathering in a cold-arid environment


Kristen R Marra, Megan E Elwood Madden, Gerilyn S Soreghan, Brenda L Hall

Applied Geochemistry, vol. 52, Pergamon, 2015, pp. 31--42


Trends in grain size and BET surface area in cold--arid versus warm--semiarid fluvial systems


Kristen R Marra, Gerilyn S Soreghan, Megan E Elwood Madden, Leslie J Keiser, Brenda L Hall

Geomorphology, vol. 206, Elsevier, 2014, pp. 483--491


Glacier meltwater stream chemistry in Wright and Taylor Valleys, Antarctica: significant roles of drift, dust and biological processes in chemical weathering in a polar climate


AR Stumpf, ME Elwood Madden, GS Soreghan, BL Hall, LJ Keiser, KR Marra

Chemical Geology, vol. 322, Elsevier, 2012, pp. 79--90