Introductory Text-book of GeologyW. Blackwood and Sons, 1869 - 194 strani |
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Stran 36
... when the fragments are larger and less rounded than those of gravel . Sandstone - Grit - Conglomerate - Breccia . - Sandstone is simply consoli- 66 dated sand , the particles having been compacted by 36 MINERAL COMPOSITION .
... when the fragments are larger and less rounded than those of gravel . Sandstone - Grit - Conglomerate - Breccia . - Sandstone is simply consoli- 66 dated sand , the particles having been compacted by 36 MINERAL COMPOSITION .
Stran 37
... Grit is the term applied when the particles are hard and angular — that is , sharper " -than in ordinary sandstones . Conglomerate , sometimes known as puddingstone , is a compact aggregation of gravel and pebbles of all sizes -in other ...
... Grit is the term applied when the particles are hard and angular — that is , sharper " -than in ordinary sandstones . Conglomerate , sometimes known as puddingstone , is a compact aggregation of gravel and pebbles of all sizes -in other ...
Stran 45
... grits . Remains of crustacea , mollusca , and zoophytes , with worm - burrows and other marine exuvia . XI . - LAURENTIAN SYSTEM , consisting of crystalline schists , quartzites , and serpentinous limestones . Remains of foraminiferal ...
... grits . Remains of crustacea , mollusca , and zoophytes , with worm - burrows and other marine exuvia . XI . - LAURENTIAN SYSTEM , consisting of crystalline schists , quartzites , and serpentinous limestones . Remains of foraminiferal ...
Stran 70
... grits of a grey rusty colour which occur in the series , and the latter having reference to their fossiliferous character , and de- noting ( in their opinion ) the transition of the world from an unin- habited to a habitable condition ...
... grits of a grey rusty colour which occur in the series , and the latter having reference to their fossiliferous character , and de- noting ( in their opinion ) the transition of the world from an unin- habited to a habitable condition ...
Stran 73
... grits , and crystalline limestones of the CAMBRIAN system , typically displayed in the mountains of Western Wales - the " Cambria " of our ancestors . In consequence of this less degree of metamorphism , not only is stratification more ...
... grits , and crystalline limestones of the CAMBRIAN system , typically displayed in the mountains of Western Wales - the " Cambria " of our ancestors . In consequence of this less degree of metamorphism , not only is stratification more ...
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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
Stran 193 - The Geological Examinator. A Progressive Series of Questions, adapted to the Introductory and Advanced TextBooks of Geology. Prepared to assist Teachers in framing their Examinations, and Students in testing their own Progress and Proficiency. By the SAME.
Stran 197 - A New and Enlarged Edition. Constructed from the best materials, and embodying the results of the most recent investigations, accompanied by a complete INDEX OF PLACES, in which the proper quantities are given by T.
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.
Stran 197 - ATLAS OF PHYSICAL GEOGRAPHY, illustrating, in a Series of Original Designs, the Elementary Facts of GEOLOGY, HYDROGRAPHY, METEOROLOGY, and NATURAL HISTORY.
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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...