Description: For grain size distribution of floodplain sediments, sediment samples were first sieved through a 2 mm diameter sieve. Samples less than 2 mm in diameter (10 g) were left overnight in 50 ml of 35 % hydrogen peroxide (H2O2) and heated the next day to remove organic matter. Subsequently, the samples were dispersed using 10 ml of 0.4 N sodium pyrophosphate solution (Na4P2O7) and got ultrasonic treatment for 45 minutes. Grain size analysis was performed for the sand fraction using the dry sieving technique (2000-630 µm: coarse sand, 630-200 µm: medium sand, 200-125 µm: fine sand, 125-63 µm: very fine sand). The finer fractions (63-20 µm: coarse silt, 20-6.3 µm: medium silt, 6.3-2.0 µm: fine silt, 2.0-0.6 µm: coarse clay, 0.6-0.2 µm: medium clay and <0.2 µm: fine clay) were measured by X-ray granulometry (XRG) using a SediGraph III 5120 (Micromeritics). Freely available program GRADISTAT v9.1 was used to calculate D50 (median of grain size), D75/D25 and D75-D25.
Global identifier:
Doi(
"10.1594/PANGAEA.972863",
)
Measurements {
domain: Unspecified,
station: None,
measured_variables: [
"Event label",
"Latitude of event",
"Longitude of event",
"Sample code/label",
"Depth, soil, minimum",
"Depth, soil, maximum",
"DEPTH, soil",
"Size fraction 2.000-0.630 mm, coarse sand",
"Size fraction 0.630-0.200 mm, medium sand",
"Size fraction 0.200-0.125 mm, fine sand",
"Size fraction 0.125-0.063 mm, 3.0-4.0 phi, very fine sand",
"Size fraction 0.063-0.020 mm, coarse silt",
"Size fraction 0.020-0.0063 mm, medium silt",
"Size fraction 0.0063-0.002 mm, fine silt",
"Size fraction 2-0.63 µm, coarse clay",
"Size fraction 0.63-0.2 µm, medium clay",
"Size fraction < 0.2 µm, fine clay",
"Median, grain size",
"Grain quartile 75%/Grain quartile 25%",
"Grain size, distribution, interquartile range",
],
methods: [
"Dry sieving",
"Dry sieving",
"Dry sieving",
"Dry sieving",
"Particle Size Analyser, Micrometrics, SEDIGRAPH III 5120",
"Particle Size Analyser, Micrometrics, SEDIGRAPH III 5120",
"Particle Size Analyser, Micrometrics, SEDIGRAPH III 5120",
"Particle Size Analyser, Micrometrics, SEDIGRAPH III 5120",
"Particle Size Analyser, Micrometrics, SEDIGRAPH III 5120",
"Particle Size Analyser, Micrometrics, SEDIGRAPH III 5120",
],
}
Dataset
Origins: /Wissenschaft/PANGAEA
Tags: Sand ? Geografische Koordinaten ? Organisches Material ? Flussaue ? Siebanalyse ? Bodenprobe ? Ultraschall ? Sediment ? Eger River ? Eger floodplain ? Grain size data ? Nördlingen ? Southern Germany ? floodplain deposits ? overbank silt-clay deposition ?
Region: Southern Germany
Bounding boxes: 10.511505° .. 10.512653° x 48.867173° .. 48.868228° 10.71652° .. 10.71652° x 48.58781° .. 48.58781°
License: cc-by/4.0
Language: Englisch/English
Issued: 2025-03-27
Modified: 2025-03-27
Time ranges: 2023-04-03 - 2023-04-03
Accessed 1 times.