Quaternary sentence example

quaternary
  • The great Hungarian plain is covered by Tertiary and Quaternary deposits, through which rise the Bakony-wald and the Mecsek ridge near Pecs (Funfkirchen).
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  • For instance, those of a ternary form involve two classes which may be geometrically interpreted as point and line co-ordinates in a plane; those of a quaternary form involve three classes which may be geometrically interpreted as point, line and plane coordinates in space.
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  • They are ionized in aqueous solution to a much greater extent than ammonia, the quaternary ammonium bases being the most ionized, and the secondary bases being more strongly ionized than the primary or tertiary bases.
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  • By the action of ammonia on the alkyl iodides a complex mixture of primary, secondary and tertiary amines, along with a quaternary ammonium salt, is obtained, the separation of which is difficult.
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  • Hofmann is as follows: the mixture is distilled with caustic potash, when the primary, secondary and tertiary amines distil over, and the quaternary ammonium salt remains behind unaffected.
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  • If the nitrogen atom in the quaternary ammonium salts be in combination with four different groups, then the molecule is asymmetrical, and the salt can be resolved into optically active enantiamorphous isomerides.
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  • The greater part of Tunisia is composed of sandstones, marls and loosely stratified deposits belonging to the Pliocene and Quaternary periods.
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  • Hatcher, demonstrate the Pleistocene nature of the deposits, by which is not necessarily meant older Quaternary, for their horizons have not been differentiated and correlated in South America.
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  • Geology unknown or unexplored shown thus Jurassic Trias & Permo-Trial r 'i ' Quaternary :.
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  • 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.
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  • 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.
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  • In the Bitterroot Valley is a large deposit of Quaternary.
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  • Their number, as a multiple of four, was prescribed by the quaternary partition of the heavens, fundamental in Chinese astronomy.
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  • It appears to be composed chiefly of Palaeozoic rocks, concealed, in the plains, by Quaternary, and possibly Tertiary, deposits.
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  • Among the Tertiary volcanic rocks those of acid types (granites, granulites) were the first to appear and are developed latitudinally; rocks of intermediate type (dacites, andesites) characterize the Miocene and early Pliocene periods; while the basic rocks (ophites, elaeolite syenites and basalts) attained their maximum in later Pliocene and Quaternary times.
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  • The broad platforms of the hamada are covered with Quaternary deposits.
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  • In the Miocene period andesites of various kinds were erupted, while at the close of the Pliocene began the great eruptions of basalt which reached their maximum in Quaternary times and continue to the present day.'
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  • This epoch of great deformation and warping marks the transition from the Tertiary to the Quaternary.
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  • On the Pacific coast marine Quaternary formations occur up to elevations of a few scores of feet, at least, above the sea.
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  • Igneous rocks, whether lava flows or pyroclastic ejections, are less important in the Quaternary than in the Tertiary, though volcanic activity is known to have continued into the Quaternary.
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  • The Quaternary beds of lakes Bonneville and Lahontan have been faulted in a small way since they were deposited, and the old shore lines of these lakes have been deformed to the extent of hundreds of feet.
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  • The researches of archaeologists prove that Quaternary Man cared little what became of his fellow-creature's body.
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  • It is interesting to note, in this Quaternary Tertiary Cretaceous Jurassic 1,;'-,"i Eocene & Jurassic Range �' ?
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  • Numerous isolated palaeolithic objects of the Mousterian type have been found in the neighbourhood of Rome in the quaternary gravels of the Tiber and Anio; but no certain traces of the neolithic period have come to light, as the many Pre" flint implements found sporadically round Rome pro- historic bably belong to the period which succeeded neolithic (called by Italian archaeologists the eneolithic period) inasmuch as both stone and metal (not, however, bronze, but copper) were in use.
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  • Determinations of the electrical conductivity of the diazonium chloride and nitrate also show that the diazonium radical is strictly comparable with other quaternary ammonium ions.
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  • Hantzsch, Ber., This assumption also shows the relationship of the diazonium hydroxides to other quaternary ammonium compounds, for most of the quaternary ammonium hydroxides (except such as have the nitrogen atom attached to four saturated hydrocarbon radicals) are unstable, and readily pass over into compounds in which the hydroxyl group is no longer attached to the amine nitrogen; thus the syn-diazo hydroxides are to be regarded as pseudo-diazonium derivatives.
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  • The earlier geologists had been in the habit of dividing the Quaternary deposits into an older Diluvium and a younger Alluvium; the latter is still employed in England, but the former has dropped out of use, though it is still retained by some continental writers.
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  • A glance at a geological map of Germany will show that the greater part of Prussia and of German Poland is covered by Quaternary deposits.
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  • Here in 1856 were discovered in a Quaternary bed in the Feldhofen Cave human remains which have been referred to a type commonly called Neanderthal Man.
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  • Various other things indicate a separation of the islands from the mainland in quaternary times; since which, owing to the later southward movement on the continent of northern forms in glacial times, there has been a struggle for existence on the mainland from which the islands have largely escaped.
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  • The low-lying country between the mountain ranges is covered for the most part by Tertiary and Quaternary deposits, but Cretaceous beds occur at several localities.
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  • Bones and implements have been found in the Quaternary gravels at Trenton, which have been held by some authorities to prove the presence of Palaeolithic man; but the earliest inhabitants of New Jersey of whom there is any certain record were the Lenni-Lennape or Delaware Indians, a branch of the Algonquian family.
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  • There seem to have been two periods of eruption, and as some of the lavas have flowed over Quaternary gravels, the latest outbursts must have been of very recent date.
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  • Between 1850 and 1860 French and English geologists were induced to examine into the facts, and found irresistible the evidence that man existed and used rude implements of chipped flint during the Quaternary or Drift period.
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  • This and other evidence (which is considered in more detail in the article Archaeology) is now generally accepted by geologists as carrying back the existence of man into the period of the post-glacial drift, in what is now called the Quaternary period, an antiquity at least of tens of thousands of years.
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  • The interval between the Quaternary or Drift period and the period of historical antiquity is to some extent bridged over by relics of various intermediate civilizations, e.g.
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  • The state of culture reached by Quaternary man is evidenced by the stone implements in the drift-gravels, and other relics of human art in the cave deposits.
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  • That the men of the Quaternary period knew the savage art of producing fire by friction, and roasted the flesh on which they mainly subsisted, is proved by the fragments of charcoal found in the cave deposits, where also occur bone awls and needles, which indicate the wearing of skin clothing, like that of the modern Australians and Fuegians.
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  • The quaternary phosphonium salts resemble the corresponding nitrogen compounds.
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  • Outside the band of Miocene beds the Sarmatian, Pontian and Levantine series, often concealed by Quaternary deposits, cover the great part of the Danube plain.
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  • The low Cordilleras of the Chocos, on the west coast, are covered by soft Quaternary sandstones and marls containing shells of extant species, such as still inhabit the neighbouring ocean.
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  • Similarly the number which in the denary scale is 215 would in the quaternary scale (base 4) be 3113, being equal to 3.4.4.4+ 1.4.4+1.4+3.
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  • The Quaternary epoch is represented by vast morainic deposits in the valleys of the Tian-shan.
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  • The tertiary arsines, such as As(CH3)3, trimethyl arsine, and the quaternary arsonium iodides and hydroxides, (CH3)4AsI and (CH3)4AsOH, tetramethyl arsonium iodide and hydroxide, have been obtained.
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  • The caves of the Balzi Rossi have proved rich in palaeolithic remains of the Quaternary period.
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  • By some authorities the term Tertiary is made to embrace in addition to the foregoing periods those of the Quaternary (Pleistocene and Holocene), i.e.
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  • Chudeau, summing up the evidence available in 1909, set forth the hypothesis that the existing upper Niger and the existing lower Niger were distinct streams. According to this theory the upper Niger, somewhat above where Timbuktu now stands, went north and north-west and emptied into the Juf, which in the beginning of the quaternary age was a salt-water lake, the remnant of an arm of the sea which in the tertiary age covered the northern Sudan and southern Sahara as far east as Bilma.
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  • Quaternary deposits spread over about a tenth of the area of the country.
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  • The true brick-clays, however, are superficial deposits of Pleistocene or Quaternary age, and occur in hollows, filled-up lakes and deserted stream channels.
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  • The western margin of anticlinal folds in quaternary alluvium are marked with black arrows.
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  • A research paper on the evolution of the glacial geomorphology has been published in Quaternary Science Reviews.
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  • The course will provide a foundation for the third year course in quaternary geomorphology.
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  • Content Emphasis is placed on both marine and non-marine ostracods and their application to Quaternary research.
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  • To develop the student's expertise in quaternary sedimentology by consideration of both theoretical and practical approaches.
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  • A 2/3 day field course at the end provides the opportunity to examine critical sites upon which the British quaternary stratigraphy is based.
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  • A research team, focuses on the Quaternary records of Greece, using the latest methods of high resolution stratigraphy.
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  • The Guanches, now extinct as a distinct people, appear, from the study of skulls and bones discovered, to have resembled the Cro-Magnon race of the Quaternary age, and no real doubt is now entertained that they were an offshoot of the great race of Berbers which from the dawn of history has occupied northern Africa from Egypt to the Atlantic. Pliny the Elder, deriving his knowledge from the accounts of Juba, king of Mauretania, states that when visited by the Carthaginians under Hanno the archipelago was found by them to be uninhabited, but that they saw ruins of great buildings.
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  • The Quaternary period includes an older stage containing fragments of fossils from the underlying formations; a later stage containing the bones of Hippopotamus, Elephas, Rhinoceros, Camelus, Equus; and finally the vast accumulations of sand which began to be formed in prehistoric times.
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  • It is interesting to note, in this Quaternary Tertiary Cretaceous Jurassic 1,;'-,"i Eocene & Jurassic Range �' ?
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  • A large part of the area is covered by Quaternary deposits, which completely conceal the solid foundation on which they rest.
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  • Thenard (Comptes rendus, 45, P 44; 47, 5, 892), are formed (together with the quaternary phosphonium salts) by heating alkyl iodides with phosphonium iodide to 150-180° C.: PH 4 I+3CH 3 I = P(CH3)3HI + 3HI; P(CH 3) 3 HI + CH 3 I = P(CH 3) 4 I + HI (see also Fireman, Ber., 1897, 30, p. 1088).
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  • The eastern part of the state is covered with a thick mantle of Quaternary (Pleistocene), and the greatest part of the western portion with very thick deposits of Miocene and Pliocene (Tertiary) To the Pleistocene belong the alluvium, loess and glacial drift, and in part the sand-hills.
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  • Care should be taken using quaternary ammonium compounds in soft water.
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  • To get mainly the quaternary ammonium salt, you can use a large excess of bromoethane.
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  • They form parallel arrays to make larger, stronger quaternary structures called fibers.
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  • This is due largely to new dating methods which are now providing a firm basis for quaternary studies.
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  • He demonstrated the important effects arising from quaternary centers in polymer chains.
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  • Quaternary structure Not all proteins have a quaternary level of structure.
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  • To develop the student 's expertise in Quaternary sedimentology by consideration of both theoretical and practical approaches.
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  • Quaternary structure tends to be stabilized mainly by weak interactions between residues exposed on surfaces polypeptides within a complex.
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  • A 2/3 day field course at the end provides the opportunity to examine critical sites upon which the British Quaternary stratigraphy is based.
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  • Quaternary: The quaternary is a four-cornered Celtic knot pattern associated with the four elements (earth, air, water, fire), as well as the four seasons (spring, summer, fall, winter) and the four directions (north, south, east, west).
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  • The thick Quaternary, or Post-Pliocene, deposits which cover nearly all Russia were for a long time a puzzle to geologists.
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  • The older formations are nearly all overlaid by deposits of the Quaternary period, which will be described last.
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  • The older formation of the Quaternary period is the Lafayette (also called "Orange-sand" or "stratified drift"), which immediately overlies all the Cretaceous groups except the prairies of the Selma chalk, and all the Tertiary except the Porters Creek and Vicksburg formations and parts of the Jackson.
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  • The second Quaternary formation is the Port Hudson, occurring within 20 m.
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  • Volcanic activity took place around its shores at the end of the Tertiary or during the Quaternary Age, and great streams of lava cover the Sayan and Khamar-daban mountains, as well as the valley of Irkut.
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  • The occurrence of commercially valuable petroleum is, however, comparatively limited, hitherto exploited deposits being confined to rocks younger than the Cambrian and older than the Quaternary, while the majority of developed oilfields have been discovered north of the equator.
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  • Finally, the laws of distribution of animals over Siberia cannot be made out until the changes undergone by its surface during the Glacial and Lacustrine periods are well established and the Post-Tertiary fauna is better known The remarkable finds of Quaternary mammals about Omsk and their importance for the history of the Equidae are merely a slight indication of what may be expected in this field.
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  • The nitrate of this base (known as nitron) is so insoluble that nitrates may be gravimetrically estimated with its help. These bases combine with the alkyl iodides to yield quaternary ammonium salts.
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  • West of this line the rocks are chiefly Tertiary and Quaternary; east of it they are mostly Palaeozoic or gneissic. In the western mountain ranges the beds are thrown into a series of folds which form a gentle curve running from south to north with its convexity facing westward.
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  • The tertiary amines possess the power of combining with one molecular proportion of an alkyl iodide to form quaternary ammonium salts.
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  • Archaeological discoveries in India, Persia, Assyria and Egypt show that in the polished stone age quaternary man had domesticated the horse, while a Chinese treatise, the Goei-leaotse, the fifth book of the Vouking, a sort of military code dating from the reign of the emperor Hoang-Ti (2637 years B.C.), places the cavalry on the wings of the army.
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  • In the west the Quaternary deposits are not, in all cases, sharply separated from the late Tertiary, but the deposits of glacial drift, referable to two or more glacial epochs, are readily differentiated from the Tertiary; so, also, are certain lacustrine deposits, such as those of the extinct lakes Bonneville and Lahontan.
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  • There is a central region, roughly triangular in shape, with its base resting upon the Quaternary K Triassic Tertiary Carboniferous q & Metamorphic 7 Jurassic Aegean Sea and its apex in Servia.
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  • Most of the country between the Andes and the sea is covered by Tertiary and Quaternary beds; but the range of hills which runs north-west from Guayaquil is formed of Cretaceous and porphyritic rocks similar to those of the Andes.
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