Estimating relative ages from iron-oxide/total-iron ratios of soils in the western Po Valley, Italy

Iron Oxide Removal from Soils and Clays by a Dithionite-Citrate System Buffered with Sodium Bicarbonate

O. P. Mehra, M. L. Jackson · Clays and clay minerals (National Conference on Clays and Clay Minerals) · 1958 · 4.3K citations

Agriculture, Earth Sciences, Soil Sciences +17

Iron oxide mineralogy of some soils of two river terrace sequences in Spain

J. Torrent, U. Schwertmann, Darrell G. Schulze · Geoderma · 1980 · 375 citations

Natural Sciences, Earth Sciences, Soil Sciences +12

Is there holocene reddening (hematite formation) in soils of axeric temperate areas?

U. Schwertmann, E. Murad, Darrell G. Schulze · Geoderma · 1982 · 129 citations

Natural Sciences, Earth Sciences, Geology +14

Extractable Iron in Relation to Soil Age on Terraces Along the Truckee River, Nevada

Earl B. Alexander · Soil Science Society of America Journal · 1974 · 85 citations

Natural Sciences, Earth Sciences, Soil Sciences +11