An Introduction to the Study of Rocks and Guide to the Museum Collection (Classic Reprint)

Download or read book An Introduction to the Study of Rocks and Guide to the Museum Collection (Classic Reprint) written by L. Fletcher and published by . This book was released on 2015-07-21 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from An Introduction to the Study of Rocks and Guide to the Museum Collection The mineral products of Nature; Rocks; Their various points of interest; The mineral species and varieties; The mineral products which are apparently simple but really mixtures; Crystals, amorphous bodies and irregular aggregates; The boundary of a rock; The general similarity of characters throughout; The existence of petrical individuals; The lithical characters of rocks; The petrical characters of rocks; The distribution of rocks into kinds; The selection of characters to be used for the distribution into kinds; Consideration of the more common kinds; A preliminary grouping of these kinds; Importance of those lithical characters which may possibly be related to the mode of origin of the rock; Characters to be emphasised; The modes of origin of the above kinds; A nearer approximation to a natural system of classification; Processes by which rocks have been formed and have attained their present characters; The modes of origin of basalt and granite; The granite, quartz-felsite, rhyolite and obsidian series; The gabbro, dolerite, basalt and tachylyte series; The position to be assigned to phonolite; The allied felspar-less rocks; The modes of origin of the crystalline schists; The effect of later research on the classification of rocks; The most important kinds of rocks; The arrangement of the rocks in the cases; Index About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.