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Sorted-Stripe Macrofabrics

 

作者: NelsonFritz,  

 

期刊: Geografiska Annaler: Series A, Physical Geography  (Taylor Available online 1982)
卷期: Volume 64, issue 1-2  

页码: 25-33

 

ISSN:0435-3676

 

年代: 1982

 

DOI:10.1080/04353676.1982.11880054

 

出版商: Taylor&Francis

 

数据来源: Taylor

 

摘要:

ABSTRACTClast fabrics in the coarse borders of sorted patterned-ground features have been descriptively characterized in a variety of ways, but have rarely been measured or analyzed statistically. Three-dimensional analyses of rock fragments in the borders of a large sorted stripe reveal significant departures from uniformity. Most a-axes are oriented subparallel to the axis of the stripe and dip gently, but have no discernable tendency for up- or downslope imbrication. In contrast, b-axes are steeply inclined, indicating compression due to expansion of fine centers as autumn freezeback proceeds. Particle orientation at the stripe's downslope margin does not differ significantly from uniformity.

 

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