Articles | Volume 68, issue 1
E&G Quaternary Sci. J., 68, 29–46, 2019
https://doi.org/10.5194/egqsj-68-29-2019

Special issue: Connecting disciplines – Quaternary archives and geomorphological...

E&G Quaternary Sci. J., 68, 29–46, 2019
https://doi.org/10.5194/egqsj-68-29-2019
Research article
16 May 2019
Research article | 16 May 2019

Grain-size distribution unmixing using the R package EMMAgeo

Elisabeth Dietze and Michael Dietze

Related authors

Holocene wildfire and vegetation dynamics in Central Yakutia, Siberia, reconstructed from lake-sediment proxies
Ramesh Glückler, Rongwei Geng, Lennart Grimm, Izabella Baisheva, Ulrike Herzschuh, Kathleen R. Stoof-Leichsenring, Stefan Kruse, Andrei Andreev, Luidmila Pestryakova, and Elisabeth Dietze
EGUsphere, https://doi.org/10.5194/egusphere-2022-395,https://doi.org/10.5194/egusphere-2022-395, 2022
Short summary
Wildfire history of the boreal forest of south-western Yakutia (Siberia) over the last two millennia documented by a lake-sediment charcoal record
Ramesh Glückler, Ulrike Herzschuh, Stefan Kruse, Andrei Andreev, Stuart Andrew Vyse, Bettina Winkler, Boris K. Biskaborn, Luidmila Pestryakova, and Elisabeth Dietze
Biogeosciences, 18, 4185–4209, https://doi.org/10.5194/bg-18-4185-2021,https://doi.org/10.5194/bg-18-4185-2021, 2021
Short summary
The genesis of Yedoma Ice Complex permafrost – grain-size endmember modeling analysis from Siberia and Alaska
Lutz Schirrmeister, Elisabeth Dietze, Heidrun Matthes, Guido Grosse, Jens Strauss, Sebastian Laboor, Mathias Ulrich, Frank Kienast, and Sebastian Wetterich
E&G Quaternary Sci. J., 69, 33–53, https://doi.org/10.5194/egqsj-69-33-2020,https://doi.org/10.5194/egqsj-69-33-2020, 2020
Short summary
Relationships between low-temperature fires, climate and vegetation during three late glacials and interglacials of the last 430 kyr in northeastern Siberia reconstructed from monosaccharide anhydrides in Lake El'gygytgyn sediments
Elisabeth Dietze, Kai Mangelsdorf, Andrei Andreev, Cornelia Karger, Laura T. Schreuder, Ellen C. Hopmans, Oliver Rach, Dirk Sachse, Volker Wennrich, and Ulrike Herzschuh
Clim. Past, 16, 799–818, https://doi.org/10.5194/cp-16-799-2020,https://doi.org/10.5194/cp-16-799-2020, 2020
Short summary
Fire hazard modulation by long-term dynamics in land cover and dominant forest type in eastern and central Europe
Angelica Feurdean, Boris Vannière, Walter Finsinger, Dan Warren, Simon C. Connor, Matthew Forrest, Johan Liakka, Andrei Panait, Christian Werner, Maja Andrič, Premysl Bobek, Vachel A. Carter, Basil Davis, Andrei-Cosmin Diaconu, Elisabeth Dietze, Ingo Feeser, Gabriela Florescu, Mariusz Gałka, Thomas Giesecke, Susanne Jahns, Eva Jamrichová, Katarzyna Kajukało, Jed Kaplan, Monika Karpińska-Kołaczek, Piotr Kołaczek, Petr Kuneš, Dimitry Kupriyanov, Mariusz Lamentowicz, Carsten Lemmen, Enikö K. Magyari, Katarzyna Marcisz, Elena Marinova, Aidin Niamir, Elena Novenko, Milena Obremska, Anna Pędziszewska, Mirjam Pfeiffer, Anneli Poska, Manfred Rösch, Michal Słowiński, Miglė Stančikaitė, Marta Szal, Joanna Święta-Musznicka, Ioan Tanţău, Martin Theuerkauf, Spassimir Tonkov, Orsolya Valkó, Jüri Vassiljev, Siim Veski, Ildiko Vincze, Agnieszka Wacnik, Julian Wiethold, and Thomas Hickler
Biogeosciences, 17, 1213–1230, https://doi.org/10.5194/bg-17-1213-2020,https://doi.org/10.5194/bg-17-1213-2020, 2020
Short summary

Related subject area

Paleo-environments
Holocene vegetation reconstruction in the forest–steppe of Mongolia based on leaf waxes and macro-charcoals in soils
Marcel Lerch, Julia Unkelbach, Florian Schneider, Michael Zech, and Michael Klinge
E&G Quaternary Sci. J., 71, 91–110, https://doi.org/10.5194/egqsj-71-91-2022,https://doi.org/10.5194/egqsj-71-91-2022, 2022
Short summary
Evaluation of geochemical proxies and radiocarbon data from a loess record of the Upper Palaeolithic site Kammern-Grubgraben, Lower Austria
Lilian Reiss, Christian Stüwe, Thomas Einwögerer, Marc Händel, Andreas Maier, Stefan Meng, Kerstin Pasda, Ulrich Simon, Bernd Zolitschka, and Christoph Mayr
E&G Quaternary Sci. J., 71, 23–43, https://doi.org/10.5194/egqsj-71-23-2022,https://doi.org/10.5194/egqsj-71-23-2022, 2022
Short summary
The Quaternary palaeobotany of Madeira and Azores volcanic archipelagos (Portugal): insights into the past diversity, ecology, biogeography and evolution
Carlos A. Góis-Marques
E&G Quaternary Sci. J., 70, 197–199, https://doi.org/10.5194/egqsj-70-197-2021,https://doi.org/10.5194/egqsj-70-197-2021, 2021
Short summary
Local mineral dust transported by varying wind intensities forms the main substrate for loess in Kashmir
Christian Zeeden, Jehangeer Ahmad Mir, Mathias Vinnepand, Christian Laag, Christian Rolf, and Reyaz Ahmad Dar
E&G Quaternary Sci. J., 70, 191–195, https://doi.org/10.5194/egqsj-70-191-2021,https://doi.org/10.5194/egqsj-70-191-2021, 2021
Short summary
Palaeoenvironmental reconstruction on the basis of Quaternary palaeo dune sequences on Fuerteventura
Christopher-Bastian Roettig
E&G Quaternary Sci. J., 69, 161–163, https://doi.org/10.5194/egqsj-69-161-2020,https://doi.org/10.5194/egqsj-69-161-2020, 2020

Cited articles

Aitchison, J.: The statistical analysis of compositional data, Chapham and Hall, London, New York, 1986. 
Bagnold, R. A. and Barndorff-Nielsen, O.: The pattern of natural size distributions, Sedimentology, 27, 199–207, 1980. 
Bartholdy, J., Christiansen, C., and Pedersen, J. B. T.: Comparing spatial grain-size trends inferred from textural parameters using percentile statistical parameters and those based on the log-hyperbolic method, Sedimentary Geology From Particle Size to Sediment Dynamics, 202, 436–452, 2007. 
Bengtsson, H.: R.matlab: Read and Write MAT Files and Call MATLAB from Within R, available at: https://CRAN.R-project.org/package=R.matlab (last access: 10 May 2019), 2018. 
Bernaards, C. A. and Jennrich, R. I.: Gradient Projection Algorithms and Software for Arbitrary Rotation Criteria in Factor Analysis, Educ. Psychol. Meas., 65, 676–696, 2005. 
Download
Short summary
Sedimentary deposits provide insights into past Earth surface dynamics via the size distribution of mineral grains documenting the erosion, transport and deposition history. This study introduces structured procedures to decipher the distinct grain-size distributions of sediment samples that were mixed during/after deposition, using the free statistical tool EMMAgeo. Compared with other algorithms, EMMAgeo is unique as it provides uncertainty estimates and allows expert knowledge to be included.