Muddo Ordovician ee Era Paleozoic ah: dhirta iyo ugaarta

Ordovician (system) - lakabka labaad ee korsiiya koox Paleozoic ee taariikhda cilmi dhul ka mid ah caalamka. Magaca waxaa laga qabiilkii hore ee Ordovician ah. Waxay ku noolaa Wales, UK. Xilligan waxa lagu aqoonsan yahay nidaamka madax banaan. Waxaa jiray shan boqol oo milyan oo sano ka hor iyo socday muddo lixdan milyan oo sano. Muddada loo qoondeeyay inta badan jasiiradaha maanta oo ku saabsan dhammaan qaaradaha.

Cilmi dhul Ordovician System

Bilowga muddada North iyo South America ayaa ku dhow in Europe iyo Afrika. Australia waxay ahayd soo socda la Africa iyo qayb ka mid ah Asia ahaa. Mid ka mid ah ulaha waa in qaybta waqooyi ee Africa, kan kale - in qaybta waqooyi ee Badweynta Pacific. Bilowga Ordovician ka badan koonfureed ee dhulka degan qaarada Gondwana. Waxaa ka mid ah hadda South America, South Atlantic Ocean, Australia, Africa, North Asia iyo Badweynta Hindiya. Tartiib tartiib, Yurub iyo Waqooyiga Ameerika (Lawrence) ayaa noqday midba midka kale ka gooni ah. heerka badda u kacaya. Inta badan dalka wuxuu ahaa ee latitudes diiran. In Gondwana ayaa qodistani, iyo ka dib ka glaciers qaaradda. In South America iyo waqooyi-galbeedka Africa ku hadhay korsiiya hoose ee moraines, kaas oo ka tagay a Zaman Paleozoic.

Ordovician ee Jasiirada Carabta, oo ku yaalla koonfurta of France, Spain waxa lagu gartaa midda. In Brazil iyo West Sahara bixisay fiidda oo baraf ayaa sidoo kale laga helay. Expansion ah meelaha badda ka dhacaan Ordovician dhexe. In qaybaha galbeed ee North iyo South America, Great Britain, in suunka Ural-Mongoliyaan, ee koonfur-bari ee Australia, raad korsiiya Ordovician gaaraan ilaa toban kun oo mitir. In meelahan, waxaa jiray wax badan oo marno, dhagax dab ceegaagta ururtay. sidoo kale hel chert: yasbid, ftanidy. In Russia muddada Ordovician waa si cad u muuqda on Yurub Bariga, madal Siberian, ee Urals, Novaya Zemlya, on the Siberian New Islands, on Peninsula Taimyr ee Kazakhstan iyo Central Asia.

xaaladda cimilada ee System Ordovician ah

In cimilada Ordovician waxaa loo kala qaybiyey afar nooc: kulaylaha, oo iscelin, dadka fareen, nival. In Ordovician ee dambe waxaa lagu qaboojinta. Gobollada kulaylaha heerkulka hoos shan digrii, gobollada fareen - shan iyo toban. Aad aad u qabow ee latitudes sare. Ordovician Dhexe ayaa waxaa jiray jawi diiran, iyadoo xilligii la soo dhaafay marka la barbar dhigo. Tan waxay cadeyneysaa nuuradda qaybinta.

Macdanta in System Ordovician ah

Ka mid ah macdanta sameeyay in muddo this, kabsaday saliidda iyo gaaska. Gaar ahaan wax badan oo kayd ah oo muddo this ee North America. Sidoo kale iftiimiyeen deebaajiga ah ee dalkana waxa saliid, phosphorite. kayd Arimahaas waxaa lagu sharaxay by geedi socodka dhulka taas oo uu ku lug magma. Tusaale ahaan, in Kazakhstan waxaa jira kayd ah ore manganese iyo barytes.

Badda ee Ordovician ah

Ordovician dhexe waxaa ka jira ballaarinta ah meelaha badda. Talona kasoo noqdo hoose. Isbeddelladan si weyn u saameeyeen raasamaal ee lakabka badan oo Texas, kuwaas oo wakiil ka daaalo madow. Waxay ka kooban tahay Mandheera ash, dhagaxyada clastic iyo ciid. badaha gacmeed ayaa ku yaalla waxa hadda waa North America iyo Europe.

The dhirta iyo ugaarta of Ordovician ah

Algae ee muddada Ordovician ah isma beddelo marka la barbar dhigo muddo hore. Waxay u muuqataa in dhirta ugu horeysay dhulka. Waxa ay inta badan wakiil Muuse.

Life biyaha ee muddada this xad kala duwan. Taasi waa sababta ay waxaa loo arkaa mid aad u muhiim ah in taariikhda dhulka. Waxa asaasay noocyada ugu muhiimsan ee nibiriyada badda. Waxaa jira kalluunka kolka hore. Kaliya waxay aad u yar yihiin, waxay ku dhowaayeen shan sintimitir. At badda xayawaan waxay bilaabeen inay u muuqdaan daboolida adag. Tani waxa ay ahayd sababta oo ah noolaha bilaabay inuu ku kici kor ku xusan korsiiya hoose oo ay ku quudiyaan kor dhibkani talona. More iyo ka badan waxaa jira xayawaanka in ay ku quudiyaan loogu aaso. Qaar ka mid ah kooxaha vertebrates ayaa waxaad fartaan Wannaagga, qaar kalena hadda bilaabeen in ay horumariyaan. Dhamaadka Ordovician muuqan noolaha laf. From badda echinoderm ah xumbo muuqday, badda u ekaayeen ubax. Currently, noolaha sida ubaxshooshanno badda iyo xiddigaha badda ayaa sidoo kale ka jira.

Kor ubaxyada badda socota illalintanada adhiga of xayawaan badeed - taasi waa sawir aad u qurux badan oo ka mid ah wakhtiyadii hore. milkiilayaasha ayaa sidoo kale bilaabay inuu dego nolol. Gastropods iyo elasmobranch wakiil tiro badan oo ah noocyada. In horumarka cephalopods Ordovician chetyrehzhabernyh ku dhacdaa - a wakiillo heer hoose Nautiloidea. organisms Kuwan waxaa hadda ku nool waxyaalaha moolka dheer oo Badweynta Hindiya. Saxanka wakiilada qadiimiga ah kuwan u khuduuca nool ahaayeen toos ah, sida soo horjeeda qolofka qalooca ee noocyada nautilus casriga ah. clams Kuwaasu waxay ahaayeen nololeed ilaashadaan ah.

xayawaanka New in muddo this ahaayeen graptolites. Waxay soo saari by gaysashada. Graptolites deegaanada abuuray. Markii hore, ay gudbiyo coelenterates ah, hadda - in krylozhabernym xawayaanka. Wakhtigan, graptolites aan sii noolaan, laakiin waxaa jira qaraabadooda fog. Mid ka mid ah iyaga ka mid ah oo ku nool badda woqooyi - waa normanni Rhabdopleura. Sidoo kale, waxaa jira koox ka mid ah noolaha caawiya shacaab dhiso Qoryaale. Waxay sidoo kale u muuqday waqti - waxa ay bryozoans. Waxay hadda jira, kuwan oo kale ah noolaha ku duurka shalash qurux badan. sida ka dhacay aromorphoses Ordovician ee noolaha.

The deggan oo badaha

sandstone ee Colorado Goosimo kalluunka jawless la helay. Bixiyay iyo harta kale ee xayawaan laf, mid ah shark ah. Fossils ayaa tilmaamaya in Ordovician kala duwan ee jawless ka noocyada maanta.

The xayawaanka marka hore in lahaa ilko - waxaa conodonts. xayawaan waxay la mid yihiin finan yihiin. daamanka waa ka daran daamankiisa dadkuba ku nool kala duwan. Seynisyahanno ku tirin lix boqol oo noocyada of xayawaan in noolaa badaha ee muddada kor ku xusan. SNAP qabow wuxuu ahaa mid ka mid ah sababaha loo dabar ee noocyada badan. badaha gacmeed ayaa noqotay meel bannaan ka, oo dugaagga badda ku dhinteen. Natiijadan ayaa waxa ay la mid ah waxaa qabsaday guntin iyo dubato muddada this.

Sababta eynu ee noolaha xayawaanka

Waxaa jira versions badan oo eynu mass uunkii:

1. Qarxaan ee rays gamma nidaamka qoraxda.
2. dayrta ee meydadka weyn oo ka bannaan. jajabkii ama meteorites ay heleen ilaa maantadan la joogo.
3. Natiijada formation of nidaamka buurta. dhagaxyada waxaa weathered by dabaysha iyo ciidda. Natiijada oo ah hawlgaladii waa ku yar carbon, taas oo saameyn ku kululaaneysa ah.
4. Guuritaanka Gondwana in South Poland keentay in SNAP qabow, ka dibna da'da barafka, hoos u ah heerka biyaha badaha ka ah.
5. damaysay ee biraha badaha dunida ee. Bartay plankton in muddada ku jira heerar sare oo ka mid ah noocyo kala duwan oo biraha. sumowga Water dhacay biraha.

Taas oo ka mid ah qoraalkii kuwaas oo u muuqdaan kuwo lagu kalsoonaan karo, iyo sababta xayawaanka bakhtiyeen Ordovician, waxaa hadda lama yaqaan.