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The AAPG/Datapages Combined Publications Database

Journal of Sedimentary Research (SEPM)

Abstract


Journal of Sedimentary Research
Vol. 73 (2003), No. 5. (September), Pages 720-724

Influence of Clast Axial Ratio on Macrofabric Strength in Periglacial Colluvium

Susan W.S. Millar, Frederick E. Nelson

ABSTRACT

Samples of fabric data collected from periglacial solifluction lobes in central Alaska show a systematic, positive relation between clast axial ratio and fabric strength. Samples composed of clasts with low a:b axial ratios have relatively low fabric strength. Restricting sampling to clasts with axial ratios of 1.5:1 or higher increases fabric strength and decreases its variability. To enhance comparability between fabric studies and the utility of fabric interpretation, sampling should be restricted to clasts with relatively large (ge2.gif (848 bytes) 1.5:1) axial ratios.


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