Earth Sculpture; Or, The Origin of Land-forms |
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Page 3
... sist mainly of the products of water action . These last are typically represented by such rocks as con- glomerate , sandstone , and shale , which are only more or less ancient sediments , formed and accumulated in the INTRODUCTORY 3.
... sist mainly of the products of water action . These last are typically represented by such rocks as con- glomerate , sandstone , and shale , which are only more or less ancient sediments , formed and accumulated in the INTRODUCTORY 3.
Page 7
... shales . The great bulk of the derivative rocks being of sedimentary origin , it is obvious that they must have been at the time of their formation spread out in ap- proximately horizontal layers upon the beds of ancient lakes and seas ...
... shales . The great bulk of the derivative rocks being of sedimentary origin , it is obvious that they must have been at the time of their formation spread out in ap- proximately horizontal layers upon the beds of ancient lakes and seas ...
Page 8
... shales with one prominent bed of limestone ( 1 ) at the top . In this case we cannot doubt that the horizontal bedding is original - that the strata were accumulated one above the other in the same order as we see them . sea . Although ...
... shales with one prominent bed of limestone ( 1 ) at the top . In this case we cannot doubt that the horizontal bedding is original - that the strata were accumulated one above the other in the same order as we see them . sea . Although ...
Page 21
... shale ; yet others are hard , tough rocks , some of which are capable of being cleaved into thin plates , as roofing - slate . 3. Silicious Rocks . These might be described in general terms as gravel - and - sand rocks . The most ...
... shale ; yet others are hard , tough rocks , some of which are capable of being cleaved into thin plates , as roofing - slate . 3. Silicious Rocks . These might be described in general terms as gravel - and - sand rocks . The most ...
Page 41
... shale , etc .; bb , conglomerates and sandstone resting discordantly or unconformably upon a a ; u u , line of ... shales is charged with the remains of marine and brackish - water organisms and of land - plants . The overlying ...
... shale , etc .; bb , conglomerates and sandstone resting discordantly or unconformably upon a a ; u u , line of ... shales is charged with the remains of marine and brackish - water organisms and of land - plants . The overlying ...
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Common terms and phrases
accumulation Alpine Alps anticlines basalt base-level basins become beds boulder-clay Carboniferous character cirques cliffs coast-lines coasts configuration Cretaceous crust crustal movements crystalline débris denudation deposits depressions depth detritus direction dislocations drainage elevation epigene epigene action epigene agents eroded escarpments feet fiords flow fluvio-glacial fluvio-glacial deposits folds gently geological structure glacial action glacial erosion glaciers gradually ground-moraines hills hollows horizontal strata ice-flow ice-sheet igneous rocks inclined indented infrequently irregular islands joints kind laccoliths lakes land land-forms land-surface lava less limestone low grounds materials mer de glace modified moraines mountain-chain mountain-valleys mountains névé normal faults Old Red Sandstone outcrops owe their origin plain of erosion plateau regions relatively result ridges rock-basins rock-masses sand sandstone schistose schists SECTION sediment slopes Southern Uplands strata streams and rivers superficial surface surface-features synclinal tectonic tend thickness tion tracts traversed underground undulating usually valleys vertical volcanic wind