Nyengo Mesozoic

Nyengo Mesozoic imatengedwa ngati gawo Transitional mu chitukuko cha dziko. Ena Akatswiriwa icho "ndi kwachilengedwenso ndi miyala Middle Ages."

Nyengo Mesozoic anayamba kumapeto kwa Variscan (Variscan) zako phiri nyumba, ndipo zinatha - ndi chiyambi cha Alpine lopinda (otsiriza lalikulu tectonic Kukwera).

Mu cha Kumwera kwa dziko lapansi, kuti mapeto a kugawanika kwa Africa wakale wa Gondwana. Ambiri, moyo m'nyengo Mesozoic yodziwika ndi mwamtendere. njira phiri nyumba anali ochepa chabe sakhalitsa.

The Mesozoic Nyengo unakhala pafupifupi miliyoni. 160 Zaka.

Kuyambira mfundo zamoyo view, nthawi iyi ndi nthawi ya kusintha kwa wosazindikira, mitundu akale kwa latsopanoli pang'onopang'ono. Dziko pa nthawi imeneyo zinali zambiri zosiyanasiyana kuposa mu Paleozoic, ndi nyama ndi zomera akhala kwambiri akweza.

Mesozoic Atabwera. nthawi

Pali magawo atatu mu nthawi iyi.

The choyamba - ndi Triassic - otchedwa chifukwa chakuti madipoziti wake pa m'ndandanda atatu zovuta zosiyanasiyana mitundu. Zikuphatikizapo neyper - chapamwamba Mbali yokhala ngati - sing'anga chokhala sandstone - m'munsi. Kwambiri mmene muli chokhala ndi mchenga dothi thanthwe (zambiri ndi magalasi mpweya), shale, miyala m'madzi, gypsum, salt, anhydrides lagoon.

The Triassic pawiri anali kum'mwera Africa (Gondwana) ndi kontinenti kumpoto (Laurasia). Pamodzi ndi kusintha kapepala cha dziko ndi nyanja, nyumba m'mapiri, mapangidwe madera atsopano chiphala, zinachitika mofulumira kwambiri ndi kasinthidwe wa nyama ndi zomera. Komabe, pali mitundu yochepa asamukira ku Paleozoic kuti Mesozoic. Ofufuza zinthu izi ndi chifukwa cha masoka zikuluzikulu zimene zinachitika pa malire ya nyengo.

Siteji yotsatira, womwenso nyengo Mesozoic - ndi Jurassic. Iwo anayamba 200 ndipo unatha pafupifupi miliyoni 145,5. Zaka zapitazo. Jurassic nthawi anakhala wa nthawi wotchuka mu chitukuko cha dziko.

Panthawi imeneyi, kwambiri ankagwiritsa ntchito mwa zomera analandira gymnosperms ndi Mumapezekanso. Amaganiza kuti mmene chilengedwe anali ofanana ndi zikhalidwe za nthawi Carboniferous, kotero monga taonera yaikulu gale- mapangidwe. Analipo mu Permian, Triassic anayamba osokoneza mu dongosolo la kontinenti yaikulu anapitiriza kuwonongeka. Zimenezi amakhudza kwambiri pa mafunde a nyanja, mvula, nyengo ndi zinthu kuli zamoyo ambiri.

Nthawi Jurassic imatengedwa "nthawi zapoizoni." Dziko anthu zinyamazi. Mu nyanja anakhala plesiosaurs ndi ichthyosaurs, mu mpweya - ndi pterosaurs. Pakati zinyamazi anayamba kupanga mitundu chiphona. Pamodzi ndi uwu, panali yaing'ono zimadya pterodaktili. Pa mapeto a nthawi Jurassic, anayamba kudzikundikira wamphamvu zigawo magawo laimu - choko. Choncho, siteji latsopano.

Chiyambi cha nthawi Cretaceous amakhala ndi zina zochitika zikuluzikulu mu mapangidwe dziko organic. Panthawi imeneyi unayamba kuonekera woyamba maluwa zomera, mafupa a amene anapereka matabwa, miyala masamba, kukula, ndi lero (mwachitsanzo, Elm, thundu, msondodzi, mapulo). The zomera mu nthawi Cretaceous ndi zayamba ofanana ndi amene kusanduka mu nthawi Jurassic.

Mapeto a imeneyi anali yodziwika ndi kwambiri orogeny (phiri nyumbayi) mu Asia East, North ndi South America. miyala nyanja akhala akukuchitirani mu Andean geosyncline pa nthawi zingapo, ting'onoting'ono basi ndi ankangodzigwera mu makutu. Choncho anapanga Andes.

ntchito chiphala chawonjezeka m'madera ambiri a dziko. The lonse kum'mwera mbali ya chilumba Indian chidafundidwa ndi chiphalaphala (kotero anapanga lalikulu yachonde "Dean"). Kumapeto kwa nyengo Mesozoic m'maiko onse anali kwambiri kulimbikitsa.