Quantitative evaluation of clast fabrics within the Catfish Creek Till, Bradtville, Ontario

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Abstract
The analysis of the orientation of the long axis of clasts in till (till fabric) is used to assess aspects of its depositional history. The till fabric of the Catfish Creek Till has been analyzed in two sections located on Lake Erie for three particle sizes: 0.3–0.6 cm, 1–5 cm, and +5 cm, at approximately 1 m intervals within each section. Data were analyzed using Bingham's distribution. Results indicate different depositional histories for the upper and lower units of the till. There are also differences between the two sections.Comparison of the results from this fabric study with those of other investigators, both qualitatively and quantitatively, when combined with other local geological criteria, indicate a complex subglacial environment of deposition, probably involving meltout, debris flows, and lodgement. This complexity of processes would account for the poorly developed fabrics.

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