I-Archaic aeon ibhalwe ngemvula ye-meteor
I-Archaic Aeon yisikhathi esandulela iHadic Aeon. Imboza cishe iminyaka eyizigidi ezingama-3.800 2.500 kuya ku-XNUMX edlule. Sisesengaphakathi kwePrecambrian Supereon, kepha kungokokuqala lapho singaqala khona ukwehlukanisa izinkathi. Njengomanduleli wayo, nayo yathinteka kakhulu ngokwakwenzeka ohlelweni lwelanga.
| Supereon | U-Eon | Izigidi zeminyaka |
|---|---|---|
| I-Precambrian | I-Proterozoic | 2.500 a 540 |
| I-Precambrian | Okudala | 3.800 a 2.500 |
| I-Precambrian | I-Hadic | 4.550 kuye ku-3.800 |
Uma i-Hadic aeon yayiyisiqalo nesiqalo seplanethi yethu, ukubaluleka kwe-Archaic aeon kulele ukuqala nemvelaphi yokuphila. Kumele kungezwe ukuthi ukuchaza nokucacisa umzuzu oqondile womcimbi ngamunye emlandweni weplanethi yethu, kuyinkimbinkimbi, uma kungenjalo, kuyinkimbinkimbi kakhulu. Izikhathi ziyaziwa, ziyachazwa, kepha ziyagcizelela futhi, alukho usuku oluqondile lwawo wonke umcimbi. Sisebenzisa lo logic njengesiqondisi, ake silandele indlela lapho sigcine khona ezinsukwini ezimbalwa ezedlule.
Akuwona nje noma yimaphi amatshe, zingamaStromatolites. Ethekwini leShark Bay, e-Australia.
Eyaziwa nangokuthi i-Archaeozoic, ingesinye sezikhathi ezinde kakhulu ezake zaba khona. Iqukethe ngokuphelele, cishe ingxenye yesithathu yesikhathi esiphelele seplanethi yethu. Emibhalweni yasendulo, i-Archaic aeon yayijwayele ukuhlukaniswa neHadic, ukujoyina zombili izikhathi njengesikhathi esisodwa. Igama elithi Archaic, elivela esiGrekini sasendulo, lisho "ukuqala" noma "imvelaphi", ngenxa yezizathu okuxoxwe ngazo. Okuthile okuphawuleka kakhulu ngale nkathi kwaba ukuvela koqweqwe lomhlaba. Lokhu kusiholela ekucabangeni ngokunyakaza okukhulu kwamatectonic plate, okuholela ekutholeni ukuthi ukwakheka kwangaphakathi kweplanethi kwakufana kakhulu nokuthi sazi kanjani namuhla.
Ukuqonda kahle ukulandelana kwezikhathi kwale eon, kufanele ihlukaniswe phakathi kwezikhathi ezinkulu ezi-4. Ngamunye wabalingisa ngezinguquko ezinkulu.
| U-Eon | Era | Izigidi zeminyaka |
|---|---|---|
| Okudala | I-Neoarchic | 2.800 a 2.500 |
| Okudala | Mesoarchic | 3.200 a 2.800 |
| Okudala | I-Paleoarchic | 3.600 a 3.200 |
| Okudala | I-Eoarchic | 4.000 / 3.800 kuya ku-3.600 XNUMX |
Incazelo esheshayo ye-Archaeozoic ingachazwa ngezehlakalo ezinkulu ezenzekile. Kwavela amaseli okuqala we-heterotrophic ne-photosynthetic anaerobic (i-cyanobacteria). Izakhiwo zokuqala zemvelaphi yezinto eziphilayo nazo ziqala, ama-stromatolites. Kanjalo amazwekazi okuqala avela ngokwakhiwa nokuqala kwamapuleti ama-tectonic. Umoya-mpilo uqala ukukhishelwa emoyeni. Futhi yize kuyisikhathi esibonakala ngokuwa kwamameteorite, futhi kuyisikhathi lapho imvula enkulu iphela khona.
I-Eoarchic
Umhlaba wawusakhiwa njalo, udaka nokuqhuma kwakuvame kakhulu
Kwakuyisikhathi esathatha cishe iminyaka eyizigidi ezingama-200/400. Ngokuya ngomthombo okuboniswene naye, ngoba iKhomishini Yomhlaba Wonke yeStratigraphy ayiwuboni umkhawulo ophansi wesikhathi. Ihlukile kokunye, ngoba yisikhathi lapho kuvela khona izidalwa eziphilayo zokuqala. Ineminyaka engu-3.800 billion edlule. Ngokuhamba kwesikhathi, eminyakeni eyizigidi eziyizinkulungwane eziyi-3.700 edlule, kuvela izidalwa zokuqala ze-chemosynthetic. Ziyizinto eziphilayo azidingi ukukhanya kwelanga ukuthola amandla azo.
Ukugeleza kokushisa okukhona bekuphindwe kathathu kunalokhu kwamanje, isimo sezulu esasikhona sasifudumele kakhulu. Lokhu akuchazanga nje kuphela lo nyaka, kepha kuphawule yonke i-eon. Kusuka kokulandelayo kuphela, iProterozoic, ukugeleza kungaba kabili kokukhona manje. Lokhu kushisa okungeziwe kungenzeka bekungenxa yokushisa okwenziwe ukwakheka komgogodla wensimbi womhlaba. Futhi ekukhiqizweni okukhulu kokushisa kwe-radiogenic ngama-radionuclides amafushane, njenge-Uranium-235. Kufanelekile ukuthi sisho umsebenzi wentaba-mlilo owawukhona emhlabeni wonke, kanye nokuqhuma kwentaba-mlilo nemigodi yodaka. Zonke zaqhubeka nokwenza izindawo eziningi ezishisayo.
I-Paleoarchic
Ama-bacterium e-anoxygenic ayavela. Okusho ukuthi, i-photosynthesize, kepha ayikhiphi i-oxygen
Kubandakanya phakathi kweminyaka eyizigidi ezingama-3.600 3.200 kuya kwezi-XNUMX. Izinhlobo zokuphila ezaziwa kakhulu ziqala. Lapha izinto eziphilayo bezilokhu zikhula futhi sezivele sithola ama-microfossils agcinwe kahle avela eminyakeni eyizigidi eziyizinkulungwane ezingama-3.460 edlule, eNtshonalanga Australia. Ama-stromatolites.
Amagciwane aqala ukwenza i-photosynthesize, ukuthola amandla elangeni. Ekuqaleni zazingama-anoxygenic, azange ziyikhiphe i-oxygen. Njengamanje, lolu hlobo lwe-photosynthesis singaluthola kumagciwane aluhlaza kusuka kusibabule hhayi kusibabule, nakamagciwane ansomi. Lolu hlobo lokuthola amandla lusungulwe cishe kwaze kwaba sekupheleni kwe-eon Archaic.
Izinto eziningi ezichaze lesi sikhathi. Kungenzeka ukuthi ukuhlangana kwamanye amakhathoni kwakwenza iVaalbará, okuyi-supercontinent yokuqala yokuqagela eyayikhona. Kumele kuqashelwe ukuthi akubona bonke ochwepheshe abavumayo ukuthi yayikhona. Futhi bekungukuphela kweshawa semeteor esedlule kakhulu. Kuwo wonke amakhulu eminyaka eyedlule, umhlaba washaywa yibo.
OkweMesoarchic
Ukubukeka kokuzenzisa kweplanethi esikhathini sokuqala seqhwa
Ihlale phakathi kweminyaka eyizigidi ezingama-3.200 kuya kweziyizi-2.800 XNUMX. Izwe eliphakeme lokucabanga IVaalbara izoqhekekabekungaba kamuva kule nkathi, kunikezwe indlela yeNeoarchic. Okuthile okuzokugqamisa yilokho kwaba okokuqala ngqa ukukhululeka okukhulu komhlaba emhlabeni. Ukuze ukwazi ukucabanga ukuthi kufanele ubukeke kanjani, amanzi asolwandle angaba nokuqukethwe kwensimbi ephezulu. Lokho kungayinika umbala oluhlaza okotshani. Futhi endaweni egcwele kakhulu isikhutha, isibhakabhaka besizokhipha imisindo ebomvu.
Yize benesifiso esisha ekwakhiweni kwamapuleti e-intercontinental, bekungafanele babe ngaphezu kuka-12%. Ngokwesinye isandla, izilwandle, zazingeke ziyeke ukwakheka. Ubuso ababezofinyelela kuzovele bube cishe U-50% wevolumu abanayo njengamanje.
I-Neoarchic
Ukubukeka kokuzenzisa okuzoqala ukuvela ngenxa ye-cyanobacteria
Isikhathi sokugcina nokuphela kwe-eon yama-Archaic. Wayeqonda phakathi Eminyakeni eyizigidi ezingama-2.800 kuya kweziyizi-2.500 XNUMX edlule. Amagciwane aqhubekile nokukhula, futhi vele qala ukwenza photosynthesize ikhipha umoya-mpilo, cyanobacteria. I-oxygenation enkulu yamangqamuzana iqala emhlabeni enemiphumela yayo ku-eon olandelayo. Ukuqoqwa okukhulu komoya-mpilo kuzogcina kudala ukonakala okukhulu ngokuhamba kwesikhathi.
Ama-protocontinents eyayikhona, njengeVaalbarah, nenye ebizwa nge-Uri, zazincane ngosayizi. Hhayi ngoba beqale ukuthandana, kepha ngoba amagxolo alo ayezivuselela. Ngokuphikisana nokuzinza lapho amazwekazi ezethula ngawo kithina namuhla. Ngaleso sikhathi, intaba-mlilo eyayiqala ukuvela, wadlala indima enkulu, kanye nezigaba namakhilikithi ayevela.
Kwakungeke kuze kufike i-eon elandelayo, iProterozoic, lapho izinhlobo zokuphila eziyinkimbinkimbi ziqala ukuvela khona.
Uma ngabe ufise ukwazi ukwazi ukuqala kwakho konke. Kwethulwa i-Hadic aeon, ukuqala kweplanethi yethu. Lapho kuvela khona futhi, ukwakheka okungaqondakali kweNyanga.