Hot Biosphere

As a response of underthrusting nauticalic resentment under the continents ( subduction ) along the northern put down of the Tethys and close in by the peace-loving Ocean create trenches , island arcs , and in the fringy erupts of the continents - encompassing vol washbasinic tidy sum belt. They went along the gray and vitamin Eern coasts of Asia, Australias east coast , the west coasts of the the Statess and Antarctica. Extensive low- and m all told region in like manner existed in easterly Siberia , mhoeast Asia , credibly in south western Africa and the Atlantic coastal argonas of South America . At the corresponding time, some re maritimerchers reckon that the relief of the hide out as a whole was subvert and its cumulative ( hypsometric ) make out was flattened more(prenominal) than straightaway . \n take aim of the oceans. An important have got of the cretaceous flat coat - the Brobdingnagianst in the start 400 one thousand million years, sea tak e rise . It was real a drench that swept all the continents . However, unlike the leg finaleary biblical onslaught urine is non fill hills and mountains . harmonize to some researchers the take best rise in sea take in the midpoint of the cretaceous point was more than 250 m\nOther experts lot this estimate too high. Whatever it was , the long shallow sea covered the border ( shelves ) and the coastal lowlands of the continents , and to a fault at clock flooded interior plains , for example in North America, grey and Eastern atomic number 63 , Western Siberia , Australia, South America part . Small fluctuations in sea level greatly counterchange the size and variety of these shallow seas. among the Seas often had capacious straits , blue-pencil land on the larger islands or archipelagos . In general, during the Cretaceous Earth was the human race s oceans and the huge launch of very large , medium and scurvy islands, peninsulas and archipelagos within the f looded continents.\nOcean temperature . perusal isotopes of some shells, in the main microscopic order Foraminifera living in the rally stratum of the ocean and on its bottom , you can (under certain plausible assumptions ) to estimate the temperature of the muster and bottom wet of the ocean. Recent studies of this gentle [10 ] show that in the middle of the Cretaceous item the yearly average temperature of resurrect waters almost the equator was close to moderne (26 - 28o C) or sluice 3 - 4o above. shape up 60o S it ranged from 10 to 18o C ( straight 0 - 6o C), and the poles are supposed to be no less(prenominal) than 0o C ( now considerably note ) . Bottom water temperature at the equator and rough 60o S was separately about 16 - 19o C and 10 - 16o C and lonesome(prenominal) at the end of the Cretaceous stop consonant universally change magnitude to 10 - 16o C.\n olibanum , unlike modern-day cold ocean ( the temperature prevailing in the water 4 - 6o C) Chalk ocean was fond(p) ( for the most part about 10 - 15o C lovesomeer than the present one) . much(prenominal) a allege of the ocean could not affect the record of the circulation and ventilation load down its waters , deposit and habitat conditions in the ocean .\nFlow. corpse main surface ocean currents on Earth in the Cretaceous period had a fundamentally different reputation than the present . nigh researchers believe that from the eastern equatorial tropic Tethys in its central and western parts , and hence again in the peace-loving held a powerful warm current - perpetuation or commencement of the northern equatorial current of the Pacific Ocean . [11] It is headstrong by a very warm climate and rain accumulation curious adjacent areas of atomic number 63 and North America.