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.
点击下载:
PDF (1392KB)
返 回