Introductory Text-book of GeologyW. Blackwood and Sons, 1869 - 194 strani |
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Stran 7
... MICA - SCHIST , AND CLAY - SLATE GROUPS , 62 • VII . THE LAURENTIAN AND CAMBRIAN SYSTEMS , EMBRACING THE EARLIEST FOSSILIFEROUS SCHISTS , SLATES , AND ALTERED LIMESTONES , 70 VIII . THE SILURIAN SYSTEM , EMBRACING THE LOWER AND UPPER ...
... MICA - SCHIST , AND CLAY - SLATE GROUPS , 62 • VII . THE LAURENTIAN AND CAMBRIAN SYSTEMS , EMBRACING THE EARLIEST FOSSILIFEROUS SCHISTS , SLATES , AND ALTERED LIMESTONES , 70 VIII . THE SILURIAN SYSTEM , EMBRACING THE LOWER AND UPPER ...
Stran 37
... Mica - schist - Gneiss . - The glistening , scaly , and transparent por- tions of granite are mica , so called from the Latin verb mico , I glisten . It forms the principal ingredient in a set of slaty PREVALENT ROCKS . 37.
... Mica - schist - Gneiss . - The glistening , scaly , and transparent por- tions of granite are mica , so called from the Latin verb mico , I glisten . It forms the principal ingredient in a set of slaty PREVALENT ROCKS . 37.
Stran 38
... mica - schist ( which is mainly composed of quartz and mica ) in containing quartz , felspar , and mica , and in being more irregular and coarser in its lamination and texture . Talc . - A transparent magnesian mineral resembling ...
... mica - schist ( which is mainly composed of quartz and mica ) in containing quartz , felspar , and mica , and in being more irregular and coarser in its lamination and texture . Talc . - A transparent magnesian mineral resembling ...
Stran 43
... mica- schist , and gneiss , very hard and compact , and totally destitute of organic remains . 40. By a more extensive examination of the strata in STRATIFIED SYSTEMS . 43.
... mica- schist , and gneiss , very hard and compact , and totally destitute of organic remains . 40. By a more extensive examination of the strata in STRATIFIED SYSTEMS . 43.
Stran 45
... mica - schist , and gneiss groups . All hard and crystalline rocks devoid of fossils . 41. Such are the stratified rocks when arranged in systems and groups ; and , so far as geologists have been enabled to dis- cover , there is no ...
... mica - schist , and gneiss groups . All hard and crystalline rocks devoid of fossils . 41. Such are the stratified rocks when arranged in systems and groups ; and , so far as geologists have been enabled to dis- cover , there is no ...
Pogosti izrazi in povedi
abundant accumulations agency aqueous arrangement ATLAS basalt beds bituminous boulders building-stone calcareous Cambrian carboniferous chalk chemical chiefly clay clay-slate coal coal-measures coloured compact composed composition conglomerates coral-reefs corals cretaceous crust crustacea crystalline deposits districts drift earth Edition encrinites England eocene epoch estuaries existing felspar fishes formation forms fossils frequent fresh-water GEOGRAPHY geologists Geology globe gneiss granite gravel greenstone grits groups igneous rocks interstratified islands lakes laminated land Laurentian lava layers less lias lignite lime limestone lower marine marls masses Mesozoic Metamorphic mica mica-schist mineral mountain limestone numerous occur ocean Old Red Sandstone oolite origin PALEOZOIC peculiar period Permian plants and animals present quartz remains of plants reptiles rivers rocky sand schists Scotland seams seas sedimentary shales shell-fish shells silicious silt Silurian slates slaty species stone strata stratified rocks structure surface termed tertiary TEXT-BOOK texture thick tion trap trappean Triassic upheavals upper vegetable volcanic wealden zoophytes
Priljubljeni odlomki
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Stran 193 - It has not been our good fortune to examine a text-book on science of which we could express an opinion so entirely favourable as we are enabled to do of Mr Page's little work."— Athenceum., ADVANCED TEXT-BOOK OF GEOLOGY, DESCRIPTIVE AND INDUSTRIAL.
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Stran 193 - Of singular merit for its clearness and trustworthy character." — Standard. Third Edition, Enlarged. GEOLOGY FOR GENERAL READERS. A Series of Popular Sketches in Geology and Palaeontology. By the Surne. 6s. "This is one of the best of Mr page's many good books. It is written in a flowing, popular style. Without illustration or any extraneous aid, the narrative must prove attractive to any intelligent reader."— Geological Magazine.
Stran 193 - The divisions of the subject are so clearly defined, the explanations are so lucid, the relations of one portion of the subject to another are so satisfactorily shown, and, above all, the...