There was no outlet, for it was a cul-de-sac—a natural court—such as are often found among the amygdaloidal mountains of Mexico.
Occasionally we meet with igneous rocks which are more or less vesicular and amygdaloidal throughout their entire mass.
Some specimens of variegated pebbles and jasper were found here imbedded in the amygdaloidal rock.
They consist almost exclusively of greenstone, becoming, in a few instances, earthy and amygdaloidal.
I ascended one, and found it was capped with trap rock in amygdaloidal nodules.
Crystals are found as a rarity in the amygdaloidal cavities of igneous rocks.
An amygdaloidal variety containing calcareous spar and zeolite occurs S. of Dudley.
The lavas comprise dark pitchstone, resembling that at Kirk Yetholm, and porphyritic and amygdaloidal andesites and basalts.
It may be traced for many miles, passing through the amygdaloidal and other traps of the hill called Normans Law.
The amygdaloidal masses, contained in the amygdaloid, are either entirely pistacite, or pistacite enclosing calc-spar.
amygdaloid a·myg·da·loid (ə-mĭg'də-loid') or a·myg·da·loi·dal (ə-mĭg'də-loid'l)
Shaped like an almond.
Of or relating to an amygdala.