id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
35317	Geikie, James	Geology			.txt	text/plain	30898	1811	70	fitly arranged under one great class--the MECHANICALLY FORMED ROCKS. crystalline rocks, and the like has happened to beds of limestone and The IGNEOUS rocks are those which owe their origin to the action of rock-forming substances, quartz, felspar, and mica, have each a definite in the great majority of cases, the mineral ingredients of the rocks are the most abundant of all the rock-forming minerals, and occurs in three Having now mentioned the chief rock-forming minerals, we proceed to a fine ingredients, the grit, and sand, and mud, form the rock called the case with certain limestones, fine-grained sandstones (liver-rock), True _igneous rocks_ occur either in beds or as irregular amorphous more or less with the bedding of the rocks, but in the case of thick rock-masses which form the solid crust of our globe, we have next to there by water filtering through the rock: this forms what is called	./cache/35317.txt	./txt/35317.txt