Garnets are most common as crystals embedded in metamorphic rocks, especially highly altered strata.
Also very common in metamorphic rocks, in many cases forming lenses and beds as ore deposits.
It is a common and very widely disseminated mineral in rocks of all kinds and ages, but especially in metamorphic rocks as veins, and banded or lenslike deposits.
More than this, the foliation frequently so characteristic of metamorphic rocks is considered as evidence of a flowing movement or shearing of the material while under pressure.
When they present these characteristics, we term them Metamorphic Rocks.
To these are now added the section “Metamorphic Rocks,” from the fifth edition of the French work.
A new edition of the French work having appeared in the early part of 1866, to which the Author contributed a chapter on Metamorphic Rocks, a translation of it is appended to the chapter on Eruptive Rocks.
Connection between the Absence of Organic Remains and the Scarcity of calcareous Matter in metamorphic Rocks.
These processes are known as metamorphism, and the rocks affected, whether originally sedimentary or igneous, are called metamorphic rocks.
These few examples must suffice of the great class of metamorphic rocks.
Wherever the heated material came into contact with aqueous rocks it transformed them, for a foot or more, into crystalline, metamorphic rocks.
If we can prove any plutonic, volcanic, or metamorphic rocks to be older than the secondary formations, such rocks will also be primary, according to this system.
The conversion of the lower sedimentary strata into metamorphic rocks has been effected by volcanic heat.
The changes have at least been sufficient to justify their being characterized as metamorphic rocks.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "metamorphic rocks" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
