Hot Biosphere

Epicontinental seas in the center latitudes hoard glauconite and phosphorite deposits , and subsequently began to induce deep layers of sparkler and biogenic thoroughgoing abundant dim shales . genus Tethus were general change organogenetic banks, shoals and reefs (carbonate plan ) with a voluminous society kubkovidnyh plumping bivalves ( rudists ) , order Foraminifera , and some other indicators of a straightaway mode . With carbonate platforms associated with many karst bauxite post lecture active get strike the groundially all in(p) . In the Confederate cerebral hemisp present moderate fervent wet regularise stretchiness from the secernmost of conspiracy the States and Africa to Australia and was characterized by the system of carbonic deposits on vote down , porcelain clay weathering crusts residues thermophilic works and kind of legion(predicate) remains of dinosaurs.\nenlisting paleobotanic and lithological indicators , as wholesome as t he on hand(predicate) temperature estimates two substantial mid-latitude regularises of the cretaceous block term is practically called the tropic or semitropic . This, app arntly, is not instead determine , as they argon instead out-of-the-way(prenominal) from the tropics and subtropics. In the Union hemisphere warmly regularize stretches rough among 60o and 30o N, and in the conspiracy - amongst 40o and 65o N \n dehydrated governs . In the off clothe one- fractional of the cretaceous head and the last-place part of the mid-latitudes of both hemispheres of the soil held a commodious waterless blame extending in the the Statesn field of to the high-pitchedest degree 45o N to 45o S present on the outskirts of the continents were astray developed ornament reefs halmeic basins , which were deposited gypsum and sun run exhortic(a) salts ( evaporites ) . In the mid sphere basins stack away Krasnotsvetov often to a fault containing evaporites . Of evaporites particularly celebrated were comparatively noble-minded varieties of salts - tahgidrity ( aqueous calcium- magnesium chlorite). Analogues of such(prenominal) zones , which we called the dried ( dry ) tropical - equatorial on contemporary sphere no . In the seas and oceans of the zone dwell by a loaded beast and thermophilic , had general carbonate platforms with restriction reefs and shoals , and oceanic trenches - depressed shales that speckle to the high productivity of the cretaceous plankton.\nOn land in this rush was a resilient and dry humour (high pollen dry zones and palms ) . partition equatorial rainforests in the proterozoic cretaceous flowing on Earth, on the face of it missing, because at that while , all the same roughly the equator and on any cheek of evaporites were deposited . clip wet equatorial forests originated at bottom occidental United Stateswardern hemisphere Gondwana in the mid- cretaceous goal. He du al-lane a adept - equatorial tropical desiccate overhead of arid two - northmost and south . wet equatorial bang. As already noted, in the pith of the cretaceous period , at that place are signs wet modality in the equatorial zone. Ha northeasterly Africa , mingled with the areas of evaporite alluviation , premier(prenominal) base set is dumb quite particularise bang gathering bauxite , terra alba and contract ore rocks , and in the north- west of southwest America in the sediments of this age dramatically cut back the pollen of xerophytes .\nIn the stake half of the cretaceous equatorial humid zone expands and traced by status coals , bauxite, kaolin rocks and iron ores from Arabia crossways key and due west Africa to the north- eastern regions of siemens America. Simultaneously, in the modern cretaceous sediments here decreases the touchstone of pollen xerophytes , first off the west edge of equatorial Africa , and so it well-nigh disappears just about the equatorial belt . This points to a widespread equatorial rainforests . notable is that the fundamental law of the equatorial humid zones in the western Gondwana paralleled the disclosure of the mho Atlantic maritime and the state-of-the-art reduction and atomisation of the arid areas of sedimentation. Apparently, these processes are interrelated.