Abstracts
Abstract
Armoured mud balls ranging in size from 2 to 20 cm in diameter (long axis) are common in the upper inter-tidal zone around Swan Creek, near Parrsboro, on the north shore of the Minas Basin. Shapes vary from nearly spherical to platy to elongate, with elongate predominant. The mud balls form from the action of wave and tidal currents transporting eroded masses of clay, as evidenced by the strike- and dip-parallel orientations of the mud balls with respect to the shore.
RESUME
Les pelotes de vase blinde'es d*une taille de 2 a 20 cm de diametre (axe longitudinal) sont re'panducs dans la zone intertidale supirieure voisine de Swan Creek, pres de Parrsboro, sur la rive nord du bassin Minas. Lcur forme varie des pelotes quasi spheriques a cellcs aplatics et allongies, les pelotes allongees £tant n£anmoins pre'dominantes. Les pelotes de vase se forment par Taction des vagues et des courants de marie transportant des masses e'rodfes d'argile, comme en font foi les orientations paralteles aux couches et aux inclinaisons magnitiques des pelotes de vase par rapport au rivage.
[Traduit par la redaction]
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