100cm Amabhunu Amakhulu Amabele Amancanyana Onodoli Bothando

Ama-Zircons ayimaminerali ayintandokazi phakathi kososayensi ngoba aqinile. Lawa ma-micrometer-size amakristalu angakwazi ukumelana nesimo sezulu ngaphezu kwezigidigidi zeminyaka ukuze alondoloze izimfihlo ze-geochemical zokuzalwa kwawo. Baphinde bathwebule ama-isotopes e-uranium avela endaweni ezungezile njengoba akha, asebenza njengesibali sikhathi esiqala kusukela lapho ama-zircon ecwebezela. Unodoli we-Ebony Sex

I-uranium isotopes ibola ibe umthofu ngamanani abikezelwayo. Ngokubala inani lama-athomu omthofu akhayo kanye nama-athomu e-uranium asele, abacwaningi bangakwazi ukuthola ukuthi singakanani isikhathi esidlule kusukela ama-zircon aqina entweni encibilikisiwe.

Ababhali bocwaningo baphenya ama-zircon ashumekwe kusampula yedwala lenyanga elaqoqwa ngesikhathi se-Apollo 17 ngo-1972, futhi bakhe imephu ye-3D yama-athomu. Ukuhlanganisa ama-isotopes aholayo kubangele iminyaka yobudala eyizigidi eziyizinkulungwane ezingu-4.46, iminyaka endala kakhulu yokwakheka kwe-lunar crust okwamanje.

Le minyaka ngaphambilini yanqunywa abahlanganyeli bakaGreer abaholwa nguBidong Zhang no-Audrey Bouvier ngo-2021, kodwa lo mbiko waveza ukungabaza. Abagxeki bakhomba iqiniso lokuthi ama-athomu omthofu ajwayele ukufuduka akhe amaphakethe okugxila okuphezulu noma okuphansi kulo lonke idwala. Ngokuya ngokuthi umuntu ubheke kuphi, bekunethuba lokuthi bahlangane nalezi zindawo zokuhola ezingasatshalaliswa ngokulinganayo futhi babale kabi iminyaka ye-zircon.

Ukuze anciphise lokhu kukhathazeka, u-Bouvier wathintana nethimba lika-Greer ukuze libale ama-athomu futhi, kulokhu nge-ion probe engase isampula yetshe endaweni ephakeme kakhulu yokuxazulula indawo eyasetshenziswa ocwaningweni lwangaphambilini. Uphenyo olungcono kakhulu lungavumela ithimba ukuthi lihlonze izifunda ezinanosized zama-athomu omthofu acebile noma aphelile, uma ekhona. Kodwa abatholanga lutho.Melina Elden Ring Sex Doll

"Kule zircon, yonke into yayifana, ngakho-ke bekungadingeki sikhathazeke ngalokho," kusho umlobi wocwaningo u-Philipp Heck, isazi se-cosmochemist e-Field Museum nase-University of Chicago. Umphumela waqinisekisa ukuthi iminyaka eyayikalwe ngaphambili yeminyaka eyizigidi eziyizinkulungwane ezingu-4.46 yayinembile.

“Ucwaningo oluhle kakhulu,” kusho uMelanie Barboni, isazi sesayensi yokwakheka komhlaba e-Arizona State University obengazibandakanyi ocwaningweni. U-Barboni uye wafunda amanye ama-isotopes kuma-zircon enyanga ukuze athole ukuthi ingaphakathi lenyanga laqala lahlala ezingqimbeni ezihlukene eminyakeni eyizigidi eziyizinkulungwane ezingu-4.51 edlule, isiqephu esandulela izigaba zokugcina zokubunjwa koqweqwe olusha esithathwe ocwaningweni olusha.

U-Barboni uthi ucwaningo olusha luyahambisana nalokho akutholile. “Amaphepha amaningi asikisela ukuthi inyanga yakha kamuva kakhulu kunalokho, ngokwesibonelo, eminyakeni eyizigidi eziyizinkulungwane ezingu-4.3,” uyanezela. "Lokho ngokusobala akunakwenzeka ngaleyo datha."