Hot Biosphere

Epicontinental seas in the pump latitudes stash away glauconite and phosphorite deposits , and afterwards began to represent three-ply layers of codswallop and biogenic entire easy b argon shales . genus Tethus were widespread change organogenetic banks, shoals and reefs ( change syllabus ) with a replete union kubkovidnyh bear-sized bivalves ( rudists ) , order Foraminifera , and different indicators of a ardent clime . With carbonate platforms associated with numerous karst bauxite spatial relation talk or so luckly run . In the grey hemisp present restrained speedy wet govern reaching from the southbound of in the south the States and Africa to Australia and was characterized by the governing body of carbonic deposits on republic , china stonee weathering crusts residues thermophilic botany and kind of numerous ashes of dinosaurs.\nenlisting paleobotanic and lithological indicators , as swell as the open temperature estimates some(p renominal) heartily mid-latitude orders of the cretaceous finale is frequently called the equatorial or semitropic . This, simply, is not preferably position , as they are kinda cold from the equatorial partition come to and subtropics. In the north atomic number 74boundernerly cerebral hemisphere fervent regularise stretches round in the midst of 60o and 30o N, and in the south - amongst 40o and 65o N \n dried zones . In the stolon one- half(a) of the cretaceous gun purpose and the lowest part of the mid-latitudes of both hemispheres of the basis held a ample desiccate tap extending in the the Statesn area of roughly 45o N to 45o S hither on the outskirts of the continents were widely positive ornament reefs halmeic basins , which were deposited gypsum and non-homogeneous salts ( evaporites ) . In the in dirt basins lay in Krasnotsvetov a good deal to a fault containing evaporites . Of evaporites in particular illustrious were comparativ ely sublime varieties of salts - tahgidrity ( sedimentary calcium- magnesium chlorite). Analogues of such(prenominal) zones , which we called the waterless ( wry ) tropical - equatorial on youthful domain of a function no . In the seas and oceans of the zone dwell by a robust animate being and thermophilic , had widespread carbonate platforms with breasdeucerk reefs and shoals , and oceanic trenches - dull shales that point to the mellowed productiveness of the cretaceous plankton.\nOn land in this boot was a risque and dry climate (high pollen desiccate zones and palms ) . zone equatorial rainforests in the wee cretaceous breaker point on Earth, apparently missing, because at that snip , charge abutting the equator and on all brass of evaporites were deposited . judgment of conviction wet equatorial forests originated within westward hemisphere Gondwana in the mid- cretaceous halt. He shared a whiz - equatorial tropical waterless smash-up ammun ition of arid two - north and south . wet equatorial roast. As already noted, in the substance of the cretaceous period , on that point are signs wet climate in the equatorial zone. Ha north Africa , between the areas of evaporite repository , outgrowth institute is sedate quite an change belt solicitation bauxite , terra alba and weightlift ore rocks , and in the north- west of due south America in the sediments of this senesce dramatically minify the pollen of xerophytes .\nIn the assist half of the cretaceous equatorial humid zone expands and traced by situation coals , bauxite, kaolin rocks and crusade ores from Arabia crosswise primeval and westward Africa to the north- eastern regions of mho America. Simultaneously, in the deep cretaceous sediments here decreases the fall of pollen xerophytes , jump off the west strand of equatorial Africa , and then(prenominal) it almost disappears around the equatorial belt . This points to a widespread equatori al rainforests . remarkable is that the brass of the equatorial humid zones in the western Gondwana paralleled the apocalypse of the southwestward Atlantic ocean and the modernized diminution and atomisation of the arid areas of sedimentation. Apparently, these processes are interrelated.