Transactions of the Edinburgh Geological Society, Volume 3The Society, 1880 |
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Página 2
... deposits have not been laid down at the same actual point of time , though , speaking geologically , the interval which separates them is a small one . They are " homotaxeous ' deposits and they contain similar fossils , because the ...
... deposits have not been laid down at the same actual point of time , though , speaking geologically , the interval which separates them is a small one . They are " homotaxeous ' deposits and they contain similar fossils , because the ...
Página 3
... deposits , the lowest of the three , to be charged with numerous fossils , amongst which Chatetes petropolitanus ... deposit of the Medina sandstone ON THE MIGRATIONS OF ANIMALS . 3 The Catalogue,
... deposits , the lowest of the three , to be charged with numerous fossils , amongst which Chatetes petropolitanus ... deposit of the Medina sandstone ON THE MIGRATIONS OF ANIMALS . 3 The Catalogue,
Página 4
but not in the intermediate deposit of the Medina sandstone , are found , hundred of miles to the east , in the island of Anticosti , in richly fossiliferous deposits which correspond in point of time with the sterile Medina sandstone ...
but not in the intermediate deposit of the Medina sandstone , are found , hundred of miles to the east , in the island of Anticosti , in richly fossiliferous deposits which correspond in point of time with the sterile Medina sandstone ...
Página 5
... deposits of approximately the same geological age , we have obviously to deal with cases of migration , whether we suppose the sea to have covered the entire area between these points at the same time or not . Examples of this are so ...
... deposits of approximately the same geological age , we have obviously to deal with cases of migration , whether we suppose the sea to have covered the entire area between these points at the same time or not . Examples of this are so ...
Página 6
... deposits beneath the line of unconformity recurring in the deposits above that line , then , clearly , a migration must have taken place . The species must have abandoned the area at the close of the deposition of the inferior set of ...
... deposits beneath the line of unconformity recurring in the deposits above that line , then , clearly , a migration must have taken place . The species must have abandoned the area at the close of the deposition of the inferior set of ...
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agricultural appearance Arthur's Seat basalt Bathgate beds Borrowstounness boulder-clay boulders Brachiopoda Burn Carb Carboniferous clay cliff Coal coast Coll colour conglomerate Corstorphine Hill Crag and tail denudation deposits district east Edinburgh evidence exhibited feet Fife figs Firth flints formation fossils Geological Society Geological Survey geologists glacial glacier Glasgow gneiss gold granite Granton gravel greenstone Halonia igneous rocks inches Inverness Ireland James lava Leadhills LL.D Loch Lothians Lower Limestone series mass Mer de Glace miles minerals moraines Museum nodules observed occur Old Red Sandstone paper pebbles Pentland period phenomena phosphorescence porphyritic portion present Professor Geikie quarry quartz Ralph Richardson river roches moutonnées rounded Salisbury Crags Samson's Ribs sand scars schists Science Scotland Scottish seen shales side Silurian soil species specimens stone strata stratified Street striæ surface theory thickness tuff Ulodendron upper valley vegetable volcanic
Passagens conhecidas
Página 123 - ... now mentioned ; and this augmentation evidently can proceed from nothing but the constant and slow disintegration of the rocks. In the permanence, therefore, of a coat of vegetable mould on the surface of the earth, we have a demonstrative proof of the continual destruction of the rocks...
Página 139 - Director of the Geological Survey of Ireland, and Professor of Geology in the Royal College of Science, Dublin. MONTAGUE RHO[)ES JAMES, MA, Litt.D., Fellow and Dean of King's College, and Director of the Fitzwilliam Museum, Cambridge. Rev. CHW JOHNS, MA, Queens
Página 256 - In the North-western provinces of Canada wheat often produces 40 and 50 bushels to the acre, while in South Minnesota 20 bushels is the average crop, in Wisconsin only 14, in Pennsylvania and Ohio 15. The fact established by climatologists that the cultivated plants yield the greatest products near the northernmost limit at which they grow, is fully illustrated in the productions of the Canadian territories...
Página 108 - This ridge, at the distance of about seven and a half miles from the sea at Salthouse-head, attains an inland distance of about five miles from the coast opposite Slains. The flints are met with on the surface at various points along that line. The ridge is bare and moorish, but covered with peat and heather, and this prevents the flints from being accurately traced.
Página 110 - Echini family, occasionally entire, but more frequently only small portions of the impressions ol these shells are found. Single spines frequently occur and are well marked. The Innoceramus, Pecten, and Terebratula abound.
Página 140 - Soc." i. 1838, p. 175". 7. Notice of the Discovery of some Remains of the Ichthyosaurus in Ireland. " Phil. Mag." xx.' 1842, p. 83. 8. Notices of the Geology of the Island of Bute.
Página 115 - ... near their highest, and at an equal elevation, the various bays and promontories, it requires no great stretch of imagination to conceive of the waves of the German Ocean as having once rolled even hither, bearing with them, and depositing on their innermost bounds, the rounded flints that mark their ancient shore. But it may be argued, The greensand beds lay right in the way, and must have suffered also from the denuding power of the waves. If future examination shows that these beds are in...
Página 148 - ... for a little, so as to melt it before proceeding to use the lamp. After use, and while the wax is melted, the wick should be pulled up about £ of an inch with a pair of tweezers before the wax solidifies, otherwise the wick will be too short to allow of trimming before the next operation. VIII. — Historical Notes on the Occurrence of Gold in the South of Scotland.
Página 108 - Buchanness, and stretching across the country for eight or ten miles ; at its eastern extremity it branches. One of the forks terminates south of Buchanness, in the mass of granite known as Stirling Hill. The other runs north of Buchanness and may be said to terminate in the granitic escarpment of the Black Hills. All along the shore between these points, wherever the rocks admit 'of a beach, quantities of water-worn flints are found mingled with the other pebbles, evidently brought there by the...
Página 131 - Forbes' classification of rocks into Ingenite rocks (born, bred, or created within or below), and second, Derivative rocks, " since directly or indirectly they are all derived from the destruction of the former," the initial letters I and D might serve as major parts of our symbols, along with either a smaller letter to denote chemical composition, and another geological conditions. Thus the plug at Arthur's Seat might be represented If ; and the beds on Calton Hill thus...