Earth Sculpture; Or, The Origin of Land-forms |
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Page 1
... volcanic eruptions in regions now practi- cally free from earth - throes of any kind . In one place . ancient land - surfaces were seen intercalated at inter- vals among great successions of marine strata ; in other PROPERTY OF THE CHY OF.
... volcanic eruptions in regions now practi- cally free from earth - throes of any kind . In one place . ancient land - surfaces were seen intercalated at inter- vals among great successions of marine strata ; in other PROPERTY OF THE CHY OF.
Page 11
... . One of the simplest kind of faults is shown in the preceding illustration ( Fig . 5 ) . Here. FIG . 5. SECTION ACROSS FAULTY OR DISLOCATED STRATA . f , normal fault , inclined in the direction of downthrow . INTRODUCTORY.
... . One of the simplest kind of faults is shown in the preceding illustration ( Fig . 5 ) . Here. FIG . 5. SECTION ACROSS FAULTY OR DISLOCATED STRATA . f , normal fault , inclined in the direction of downthrow . INTRODUCTORY.
Page 16
... kind of evidence , however , leading to the same general con- clusion , which may be briefly touched upon at this stage of our inquiry . In this and other countries there are enormous masses of rock , often widely ex- tended , which ...
... kind of evidence , however , leading to the same general con- clusion , which may be briefly touched upon at this stage of our inquiry . In this and other countries there are enormous masses of rock , often widely ex- tended , which ...
Page 20
... kind of streaky structure or pseudo - lamination , their constituent minerals being arranged in rudely alternate lenticular layers . Igneous rocks and schists are traversed by cracks and fissures which usually ramify irregularly in all ...
... kind of streaky structure or pseudo - lamination , their constituent minerals being arranged in rudely alternate lenticular layers . Igneous rocks and schists are traversed by cracks and fissures which usually ramify irregularly in all ...
Page 22
... kind . They vary in character from soft earthy marls and chalks to hard , granular , crystalline limestones and saccharoid marbles . Some are nearly pure carbonate of lime ; others contain larger or smaller percentages of quartz , clay ...
... kind . They vary in character from soft earthy marls and chalks to hard , granular , crystalline limestones and saccharoid marbles . Some are nearly pure carbonate of lime ; others contain larger or smaller percentages of quartz , clay ...
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Common terms and phrases
accumulation Alps anticlines basalt base-level basins become beds Carboniferous character cliffs coast-lines cones configuration Cretaceous crust crustal movements crystalline débris denudation deposits depressions depth detritus direction dislocations drainage elevation epigene action epigene agents eroded escarpments eventually feet fiords flexures flow fluvio-glacial deposits folds fracture gently geological structure glacial action glaciers gradually granite ground-moraines Highlands hills hollows horizontal strata ice-sheet igneous rocks inclined indented infrequently irregular islands joints Jura Mountains laccoliths lakes land land-forms land-surface lava less limestone low grounds masses materials Mesozoic modified moraines mountain-chain mountain-valleys mountains normal faults North Old Red Sandstone outcrops owe their origin Permian plain of erosion plateau regions relatively result ridges rock-basins rock-masses sand sandstones schistose schists Section sediment shales Silurian slopes Southern Uplands strata streams and rivers superficial surface surface-features synclinal tectonic tend thickness tion tracts traversed underground undulating usually valleys vertical volcanic