adjective
definition
Of, or relating to geology or a geologic time scale.
synonyms
Examples of geological in a Sentence
They were beautiful and tiny, some sort of geological anomaly.
Others are relics of an earlier geological period, when land areas 1 Authorities differ in their methods and results of computation of these and other similar measurements.
Scientific exploration began in 1849, and systematic geological investigation about 1875.
He was a fellow of the Royal, Royal Astronomical, Geological and other scientific societies.
I have said that Walden has no visible inlet nor outlet, but it is on the one hand distantly and indirectly related to Flint's Pond, which is more elevated, by a chain of small ponds coming from that quarter, and on the other directly and manifestly to Concord River, which is lower, by a similar chain of ponds through which in some other geological period it may have flowed, and by a little digging, which God forbid, it can be made to flow thither again.
There are three stadia, or moments, in this process of nature - (i) the mechanical moment, or matter devoid of individuality; (2) the physical moment, or matter which has particularized itself in bodies - the solar system; and (3) the organic moment, or organic beings, beginning with the geological organism - or the mineral kingdom, plants and animals.
Both Darwin and Wallace lay great stress on the close relation which obtains between the existing fauna of any region and that of the immediately antecedent geological epoch in the same region; and rightly, for it is in truth inconceivable that there should be no genetic connexion between the two.
The discovery of a single fossil creature in a geological stratum of a wrong period, the detection of a single anatomical or physiological fact irreconcilable with origin by descent with modification, would have been destructive of the theory and would have made the reputation of the observer.
E Arabian Sea Ba Of G A L e Geological information incomplete Desert Deposits Quaternary Tertiary Mesozoic Palaeozoic Archaean and Metamorphic Younger Volcanic Rocks English Miles b iuHi iiiiuiiiiii after llargl,aua Geology The geology of Asia is so complex and over wide areas so little known that it is difficult to give a connected account of either the structure or the development of the continent, and only the broader features can be dealt with here.
These highlands exhibit very considerable evidences of volcanic activity both in remote geological periods and also since the Tertiary epoch.
Owen com municated a detailed description of them to the Philosophical Transactions (1863, pp. 33-47), proving their bird-like nature, and referring them to the genus Archaeopteryx of Hermann von Meyer, hitherto known only by the impression of a single feather from the same geological beds.
Wilson, Ohio (New York, 1902), and a great mass of material on this subject is contained in the publications of the Geological Survey of Ohio (1837 et seq.).
It is certain that in previous geological ages Lake Baikal had a much greater extension.
Bitumen is, in its various forms, one of the most widel y -distributed of substances, occurring in strata of every geological age, from the lowest Archean rocks to those now in process of deposition, and in greater or less quantity throughout both hemispheres, from Spitzbergen to New Zealand, and from California to Japan.
It had already been understood that the various genera of the Ratitae were the representatives of so many different groups, each of which was at least equivalent to ordinal rank, and that therefore, if the Ratitae were still to be considered a natural group, this common ancestry must be referred to a remote geological epoch.
He then settled for some years as a medical practitioner at Penzance; there geology engaged his particular attention, and he became secretary of the Royal Geological Society of Cornwall.
The geological surveys of Great Britain and Ireland were connected from 1832 to 1853 with the ordnance survey, but are now carried on independently.
The map produced on this large scale numbers over 5000 sheets, and is used as a basis for the geological surveys carried on in several of the states of Germany.
Powell, rightly conceived that it was necessary to produce good topographical maps before a geological survey could be pursued with advantage.
In extent, in altitude, in mass, in complexity and in geological interest, it is much the most important of the three systems. Almost all the mountains are very bold.
Daly estimates that the maximum lowering of ocean level due to this cause would only amount to 36 fathoms, but even that would be the cause of very marked geological effects.
Although rocks wholly or in large part vitreous are known from very ancient geological systems, such as the Devonian, they are certainly most frequent in recent volcanic countries.
These trenches have for successive geological periods been the drainage valleys of immense lakes (probably also of glaciers) which formerly extended over the plateau or fiords of the seas which surrounded it.
Galena occurs in veins in the Cambrian clay-slate, accompanied by copper and iron pyrites, zinc-blende, quartz, calcspar, iron-spar, &c.; also in beds or nests within sandstones and rudimentary limestones, and in a great many other geological formations.
In 1823 he was selected along with Dufrenoy by Brochant de Villiers, the professor of geology in the Ecole des Mines, to accompany him on a scientific tour to England and Scotland, in order to inspect the mining and metallurgical establishments of the country, and to study the principles on which Greenough's geological map of England (1820) had been prepared, with a view to the construction of a similar map of France.
The theory has not found general acceptance, but it proved of great value to geological science, owing to the extensive additions to the knowledge of the structure of mountain ranges which its author made in endeavouring to find facts to support it.
Probably, however, the best service Elie de Beaumont rendered to science was in connexion with the geological map of France, in the preparation of which he had the leading share.
Brazil is a region which has been free from violent disturbances since an early geological period.
In 1875 a geological commission was organized under the direction of Professor Charles Frederick Hartt, but it was disbanded two years later.
C. White, of the U.S. Geological Survey, who found strata of fairly good coal at depths of 100 to 200 ft.
The general geological structure of Natal and Zululand is simple.
Wollaston became a member of the Geological Society of London in 1812, and served frequently %I the Council and for some time as a vice-president.
Associated with Ray in his work, and more especially occupied with the study of the Worms and Mollusca, was Martin Lister (1638-1712), celebrated also as the author of the first geological map.
Within this nearly complete circle of crystalline rocks several geological formations have been determined, of which the age cannot be more definitely fixed than that they are vastly older than the Karroo formation and newer than the Swaziland schists.
At that time, recent from a geological standpoint, the valley to the north, through which now flows the Semliki river, was blocked.
The Rhine connects the highest Alps with the mud banks of Holland, and touches in its course the most varied geological periods; but the river valley itself is, geologically speaking, of comparatively recent formation.
London lies within the geological area known as the London basin.
The he Board of Education directly administers the following educational institutions - the Victoria and Albert Museum, South Kensington, with its branch at Bethnal Green, from both of which objects are lent to various institutions for educational purposes; the Royal College of Science, South Kensington, with which is incorporated the Royal School of Mines; the Geological Survey of the United Kingdom and the Museum of Practical Geology, Jermyn Street; the Solar Physics Observatory, South Kensington; and the Royal College of Art, South Kensington.
Burlington House, in Piccadilly, built in 1872 on the site of a mansion of the earls of Burlington, houses the Royal Society, the Chemical, Geological, Linnaean and Royal Astronomical Societies, the Society of Antiquaries and the British Association for the Advancement of Science, of which the annual meetings take place at different British or colonial towns in succession.
The prospector is guided in his search by a knowledge of the geological conditions under which useful minerals occur.
A similar condition of strain has been observed in deep mines in different parts of the world - perhaps due to geological movements.
His leisure was dedicated to geological researches in the papal states.
The geological formation of the soil belongs to the Quaternary and Pliocene period in its upper strata, and to the Eocene and Cretaceous in the lower.
An analysis of the innumerable outbreaks in various parts of Europe indicates that the geological features of the affected districts play a less important part in the incidence of the disease than soil dampness.
The imperial natural history museum contains a mineralogical, geological and zoological section, as well as a prehistoric and ethnographical collection.
Not far from these ancient monuments is the new Raetian Museum, which contains a great collection of objects relating to Raetia (including the geological collections of the Benedictine monk of Disentis, Placidus a Spescha (1752-1833), who explored the high snowy regions around the sources of the Rhine).
The coast has been upraised from the ocean at no very distant geological epoch, and is nearly as destitute of vegetation as the Coast.
Thus the orographical features of the country correspond broadly with the geological divisions.
Shaler, Geology of Nantucket (Washington, 1889), being U.S. Geological Survey Bulletin, No.
Hence the mountain has served as a type for the general popular conception of a volcano, and its history has supplied a large part of the information on which geological theories of volcanic action have been based.