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Table 1 Statistical parameters of pyrite framboids from three intervals in well 570 (size in μm)

From: Ooidal ironstones in the Meso-Cenozoic sequences in western Siberia: assessment of formation processes and relationship with regional and global earth processes

SampleAgeMean diameterStandard deviationMinimalMaximumMedian diameterFirst quartile (25%)Third quartile (75%)
5702157Campanian11.35.23.125.710.47.315.9
5702161Campanian7.15.92.726.45.23.77.1
5702170Campanian6.84.12.827.65.84.97.4
5702189Campanian7.23.32.519.46.04.78.6
5702218Santonian5.42.22.017.45.14.06.0
5702219Santonian8.05.14.132.46.35.37.9
5702240Santonian6.32.31.419.35.94.77.5
5702248Santonian5.31.81.910.25.24.06.3
5702279Santonian5.72.41.211.15.33.96.8
5702286Santonian5.72.72.524.05.24.46.4
5702320Santonian5.52.32.219.75.04.16.3
5702343Santonian5.11.92.315.24.63.85.9
5702348Santonian6.24.32.229.04.94.06.7
5702368Santonian6.73.01.418.76.04.77.8
5702390Coniacian6.43.03.413.15.74.86.7
5702432Coniacian6.73.02.617.76.35.07.3
5702440Coniacian12.08.52.946.47.65.917.2
5702465Coniacian9.63.83.519.38.56.812.1