Abstract of the Proceedings of the Liverpool Geological Society, Band 3 |
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appears Arctic bed of shale Boulder-clay carbonate of lime Carboniferous Limestone Cefn-y-Fedw Sandstone Cheshire Chrysocolla clay climate Coal colour containing Copper Corwen crystals débris denudation deposits depth district Drift earth east Eglwyseg Eglwyseg ridge evidence exposed fault felspar flint Flintshire formation fossils Geological Society Geological Survey Glacial Period Glaciers Granite gravel Hill inches Journ Lancashire land Liverpool Liverpool Geol Llangollen Llanymynech lower beds Lower Brown Limestone Lower White Limestone MELLARD READE Mersey mica Millstone Grit mineral MORTON mountains North Wales occur ocean Old Red Sandstone Oswestry pebbles Phil present probably Proc Productus quartz Red Sandstone remarkable river Road rocks sand Sandy Limestone Shale shells Silurian solids in solution species square mile stone strata Street striæ striated subdivision sulphate surface temperature tons Treflach Triassic Ty-nant Ty-nant ravine upper beds Upper Grey Limestone Upper White Limestone valley volcanic
Beliebte Passagen
Seite 369 - In the time of the Romans the Danish isles were covered, as now, with magnificent beech forests. Nowhere in the world does this tree flourish more luxuriantly than in Denmark, and eighteen centuries seem to have done little or nothing towards modifying the character of the forest vegetation. Yet in the antecedent bronze period there were no beech trees, or at most but a few stragglers, the country being then covered with oak. In the age of stone, again, the Scotch fir prevailed, and already there...
Seite 369 - Thus, in Mar forest, in Aberdeenshire, large trunks of Scotch fir, which had fallen from age and decay, were soon immured in peat formed partly out of their perishing leaves and branches, and in part from the growth of other plants.
Seite 228 - If we allot 50 tons to carbonate of lime, 20 tons to sulphate of lime, 7 to silica, 4 to carbonate of magnesia, 4 to sulphate of magnesia...
Seite 341 - ... to 12° S., along the shores of the Pacific. This is a distance, in a north and south line, of 2,075 geographical miles. From Byron's observations, the elevation has no doubt extended sixty miles...
Seite 252 - ... of these pebbles both in moraines and also in the Boulder-clay illustrates what had been deduced from previous investigations in the Valley of the Mersey — that in Britain, during what is called the Glacial Period, ' the glaciers did not progress from an immense accumulation in the north, but were formed by the snow-fall in the respective valleys ; being of such an extent only as might reasonably be considered due to the amount of deposition on their water-slopes.
Seite 338 - When there has been no reason to suppose that the trawl has sunk more than one or two inches in the clay, we have had in the bag over a hundred sharks...
Seite 334 - ... theorem (or definition) to the observed rate of increment of heat in descending from the geothermal couche of invariable temperature, and the co-efficients of conductivity of the rocks of our earth's crust, as given by the longcontinued observations made beneath the Observatories of Paris and of Edinburgh, it results that the annual loss of heat into space of our globe at present is equal to that which would liquefy into water, at 32° Fahr., about 777 cubic miles of ice; and this is the measuring...
Seite 29 - ... little potash to the water before adding the Nessler test. Thus, in estimating the ammonia in the distillate from soda water, too small a number will be obtained, if this precaution be neglected. When there is a necessity for the use of the Nessler test without previous distillation, a special device has to be resorted to in order to get rid of the disturbing influence on the Nessler test of the substances dissolved. Thus : — Take 500 cc of water, add a few drops of solution of chloride of...
Seite 277 - It can be easily reached by digging, and when found can be distinguished from any other white earth by its not effervescing with acids as white marl does, by its not becoming plastic when wet, as white clay does, and by its dissolving almost entirely in a strong boiling hot solution of washing soda. " The importance of this material will be appreciated when it is stated that the manufacture of dynamite, or giant powder, at Drakeville, has reached 50,000 pounds a month.
Seite 129 - SHORT, DR. T. An Essay Towards A Natural, Experimental, and Medicinal History of the Principle Mineral Waters of Cheshire, &c.