Encara no tenim significats per a "metamorphic rock".
1Long sheets of metamorphic rock that have been sheared in two.
2In many cases, however, the early history of a metamorphic rock can be deciphered.
3There are 3 specific kinds of metamorphic rock in N.Y.C.
4They are of quartzite, lava, greenstone, metamorphic rock and basalt.
5There is no igneous, no metamorphic rock here; nothing but limestone of the Jurassic formation.
6Stone hatchets rather well formed with blunt poll, distinct annular groove, and tapering blade; chiefly of basalt, three of metamorphic rock.
7Stone and the other two hacked their way up a mountainside of hard, metamorphic rock until they found a strip of limestone.
8The three-billion-year-old, razor-sharp Lewisian gneiss on the isles of Lewis and Pabbay is some of the oldest metamorphic rock on the planet.
9It measures some 8' 6" x 4' 6" x 4' 0" and reposes upon two slightly jutting points of the underlying metamorphic rock.
10These few examples must suffice of the great class of metamorphic rocks.
11So again the making out of cleavage and the foliation of the metamorphic rocks.
12There is also a class of rocks, called metamorphic rocks, including some kinds of marble.
13Why do metamorphic rocks appear on the surface to-day?
14Anthracite coal occurs in folded and metamorphic rocks.
15How do the Triassic sandstones and shales compare in hardness with the igneous and metamorphic rocks about them?
16The and sands and limy oozes now changed to gneisses, schists, marbles, quartzites, slates, and other metamorphic rocks.
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