Question

lineation (french lignage, line), is a linear fabric. example: stretched pebbles in metaconglomerate so as to be elongated (fig. 6.4a). the long axes of stretched pebbles collectively comprise a lineation.
type 2
foliation (french foillage, leaf), is a tabular fabric. there are two kinds of foliation: one (figs. 6.4b, c) is manifest in the parallel orientation of plate - like minerals (e.g., clays and micas), which imparts rock - cleavage (not to be confused with mineral - cleavage). this is called slaty cleavage in slate and schistosity in schist. both slates and schists develop from shale, but schists result from greater pressure. the hardness and smooth cleavage of slate make it ideal for roofing shingles, floor tile, chalkboards, and pool tables.
the other type of foliation (fig. 6.4d) is manifest in the segregation of light minerals and dark minerals into layers, imparting a banded appearance. this rock is called gneiss. gneiss does not exhibit rock - cleavage as do slate and schist.
q6.4 imagine pebbles in a metaconglomerate that have been stretched (elongated) and flattened by pressure, so as to exhibit three axes of different lengths. do such strained pebbles exhibit lineation, foliation, or both?

Explanation:

Step1: Recall lineation definition

Lineation is a linear fabric, like elongated pebbles in metaconglomerate.

Step2: Recall foliation definition

Foliation is a tabular fabric, like parallel - oriented plate - like minerals or mineral segregation into layers.

Step3: Analyze the strained pebbles

The strained pebbles have three axes of different lengths due to stretching and flattening. Their long axes collectively form a lineation as per the lineation definition. But they do not form a tabular fabric as required for foliation.

Answer:

Lineation