
TY  - JOUR
A1  - Chartres, CJ 
A1  - Costin, AB 
T1  - Buried soil cracks in alluvium near Braidwood, NSW
JF  - Soil Research
JO  - Soil Res.
Y1  - 1981
VL  - 19
IS  - 3
SP  - 255
EP  - 263
KW  - 
UR  - https://doi.org/10.1071/SR9810255 
N2  - Buried soil cracks developed within sandy alluvium are described from the Upper Shoalhaven Valley south-west of Braidwood. The cracks, 10-40 mm wide and filled with an indurated sandy matrix, are about 1 m apart, up to 1.75 m deep, and arranged in a polygonal pattern. Determinations are made of the field and laboratory characteristics of the materials in which the cracks are developed and of the in-fill matrix, and these characteristics are related to possible mechanisms of formation. One possible group of mechanisms is seasonal frost-induced cracking associated with periodic filling in of the cracks by wind- or water-borne debris, then partial truncation of the materials followed by burial under alluvium. The cracks are unlikely to be more than c. 21 000 years old, and may be younger. 
ER  -

