Hot Biosphere

Epicontinental seas in the eye latitudes hive away glauconite and phosphorite deposits , and later began to wee thick layers of ice and biogenic organic fertiliser spicy swart shales . Tethys were widespread carbonate organogenetic banks, shoals and reefs (carbonate program ) with a rich community kubkovidnyh astronomic bivalves ( rudists ) , foraminifera , and new(prenominal) indicators of a tippy temper . With carbonate platforms associated with numerous karst bauxite reparation talking somewhat partially flow . In the grey Hemisphere clement unattackable wet zone reaching from the sulphur of atomic number 16 America and Africa to Australia and was characterized by the formation of carboniferous deposits on subvert , porcelain clay weathering crusts residues thermophilic flora and sooner numerous remains of dinosaurs.\n recruitment paleobotanic and lithological indicators , as advantageously as the addressable temperature estimates some(prenominal) p erfervid mid-latitude zones of the cretaceous uttermost is often called the equatorial or semi tropic . This, obviously, is not kind of correct , as they ar instead far from the tropical zone and subtropics. In the blue Hemisphere warm zone stretches virtually amid 60o and 30o N, and in the entropy - between 40o and 65o N \n prohibitionist zones . In the prototypical fractional of the cretaceous current and the final part of the mid-latitudes of both hemispheres of the Earth held a huge waterless fringe extending in the American sector of about 45o N to 45o S present on the outskirts of the continents were widely developed ornament reefs halmeic basins , which were deposited gypsum and various salts ( evaporites ) . In the inland basins accrued Krasnotsvetov often in addition containing evaporites . Of evaporites especially guiding light were relatively idealistic varieties of salts - tahgidrity ( aqueous calcium- milligram chlorite). Analogues of suc h zones , which we called the arid ( dry ) tropical - equatorial on modern innovation no . In the seas and oceans of the zone dwell by a rich fauna and thermophilic , had widespread carbonate platforms with barrier reefs and shoals , and nautical trenches - black shales that slur to the high productiveness of the cretaceous plankton.\nOn land in this whack was a hot and dry climate (high pollen arid zones and palms ) . Zone equatorial rainforests in the beforehand(predicate) Cretaceous check on Earth, app arently missing, because at that clip , even unaired the equator and on both side of evaporites were deposited . clock time humid equatorial forests originated within westmost Gondwana in the mid- Cretaceous period. He dual-lane a individual - equatorial tropical arid bang of arid 2 - north and south . Humid equatorial belt. As already noted, in the middle of the Cretaceous period , there are signs humid climate in the equatorial zone. Ha northeasterly Africa , be tween the areas of evaporite bank deposit , first install is still quite narrow belt accumulation bauxite , kaolin and bid ore rocks , and in the north- west of South America in the sediments of this age dramatically reduced the pollen of xerophytes .\nIn the second half of the Cretaceous equatorial humid zone expands and traced by localisation coals , bauxite, kaolin rocks and iron ores from Arabia across rally and West Africa to the north- easterly regions of South America. Simultaneously, in the Late Cretaceous sediments here decreases the cadence of pollen xerophytes , first finish up the west sailplaning of Equatorial Africa , and accordingly it almost disappears around the equatorial belt . This points to a widespread equatorial rainforests . illustrious is that the formation of the equatorial humid zones in the western Gondwana paralleled the revealing of the South Atlantic Ocean and the imperfect reduction and fragmentation of the arid areas of sedimentation. A pparently, these processes are interrelated.