At the south-east corner of M'Tavish Bay, primitive rocks form a hilly range which, at the distance of a mile or two from the shore, attains an elevation of eight hundred or one thousand feet.
The sections of these banks by torrents present only sand or clay; and the hollows of the ravines are lined with boulders principally of primitive rocks.
The breadth of the Mackenzie is here about two miles, and its banks are composed of a muddy clay: the stones on the beach mostly limestone, with some boulders of primitive rocks.
These have one common origin: they are also of similar composition generally; and in this approach the composition of primitive rocks.
It is, however, to be carefully observed, that perfect crystals of different kinds are found imbedded in primitive rocks.
It is the base of the whole class of primitive rocks, and almost altogether constitutes quartz, flint, &c.
The lead mines of Daouria are numerous and rich, lying in a transition limestone, which rests on primitive rocks; their lead is neglected on account of the silver.
Native copper, occurs in crystals, branches and filaments, its most common locality being in primitive rocks.
It has been supposed that the gold found in the beds of rivers had been torn out by the waters from the veins and primitive rocks, which they traverse.
Tin, exists principally in primitive rocks, appearing either in interlaced masses, in beds, or as a constituent part of the rock itself, and more rarely in distinct veins.
It would seem as if volcanic fire, after the formation of primitive rocks, could not pierce into eastern America.
Doctor Gillan imagined that he observed, between Laguna and the port of Orotava, in very deep ravines, beds of primitive rocks.
The country that extends from the right bank of the Orinoco to the Cassiquiare and the Rio Negro, is a country of primitive rocks.
The dryness of the plateau is the greater, because (and this circumstance is rather extraordinary in a country of primitive rocks) several rivers lose themselves in crevices in the ground.
Does this ground, composed probably of primitive rocks, like that which I examined more to the east, contain disseminated gold?
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "primitive rocks" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
