Soil catenas to estimate ages of movements on normal fault scarps, with an example from the Wasatch fault zone, Utah, USA
Catena ; Dating ; Earthquake ; Fault ; Fault scarp ; Geochronology ; Palaeogeography ; Pedogenesis ; Semi-arid area ; Soil ; Stratigraphy ; United States of America ; Utah
Trenches excavated across fault scarps on a 13 ka delta surface at Brigham City, Utah, document 4 types of soil-catena phenomena. 2 soil catenas were used to evaluate the applicability of a continuity approach to paleoearthquake dating, by which
percentages of total development time represented by each soil at a fault scarp footslope could be estimated.
Eleven backhoe trenches were excavated across six Quaternary fault scarps on the northeastern margin of the Basin and Range extensional tectonic province. Fifteen palaeoseismic events can be recognized, bracketed by radiocarbon or thermoluminescence