Ngo-1969, izisebenzi zokwakha e-Oklahoma, eU.S.A., zathola isakhiwo esiyinqaba esasibonakala sengathi esakhiwe umuntu futhi, ngokusho kwababhali abaningi, sasinamandla okubhala kabusha hhayi nje umlando wase-United States kuphela kodwa nomlando wawo wonke umhlaba.
Lesi sakhiwo, esifana nesitezi se-mosaic yamatshe, satholwa ochwepheshe abakholelwa ukuthi sahlehlela emuva eminyakeni eyizinkulungwane ezingama-200. Ngesikhathi esifanayo, kucatshangwa kabanzi ukuthi abantu bokuqala bafika eNyakatho Melika kuphela eminyakeni eyizinkulungwane ezingu-22-19 edlule.
Ngemva nje kokutholakala kwayo, kwanyatheliswa isihloko mayelana nalokhu okuphawulekayo okutholakele ephephandabeni "Oklahoman, " okudala impikiswano eshubile phakathi kongoti nabafundi bansuku zonke. Indaba iphinde yafaka nezithombe ezintathu ezimnyama nezimhlophe zalokhu "i-mosaic," okuseyizithombe kuphela ezisekhona zale nto.
Nakhu okubhalwe esihlokweni sezindaba:
“Ngo-June 27, 1969, izisebenzi ezazisika idwala elise-Broadway Extension ku-122nd Street, phakathi kwe-Edmond ne-Oklahoma City, zathola into eyabangela ukungqubuzana okukhulu kochwepheshe. …
Nginesiqiniseko sokuthi enziwe umuntu ngoba amatshe ayehlelwe aba amasethi aphelele emigqa ehambisanayo eyayiphambana ukuze akhe umumo wedayimane, wonke ebheke empumalanga,” kusho uDurwood Pate, isazi sokuma komhlaba sase-Oklahoma City esacwaninga le ndaba futhi sayibeka ngokucophelela.
Siphinde sathola imbobo yesigxobo (insika) eyisicaba ngokuphelele. Ingaphezulu lamadwala libushelelezi kakhulu, futhi uma uthatha elinye lawo, uthola okuthile okubonisa ukuguga. Yonke into ibekwe kahle kakhulu ukuthi ingaba ukwakheka kwemvelo.”
UDkt. Robert Bell, isazi semivubukulo e-University of Oklahoma, akavumelani nalokho, ethi lokhu kutholakala kwakuwukwakheka okungokwemvelo. UDkt. Bell uthe akatholanga zimpawu ze-ejenti yokucubungula. U-Pate, ngakolunye uhlangothi, uthole into efana ne-grout - uketshezi oluminyene olusetshenziselwa ukugcwalisa izikhala ezakhiweni - phakathi kwetshe ngalinye.
Lesi sakhiwo, esitholwe cishe ngamasentimitha angu-90 ngaphansi komhlaba, sibukeka singamamitha-skwele ayizinkulungwane eziningi, ngokusho kukaDelbert Smith, isazi sokuma komhlaba, nomongameli we-Oklahoma Seismograph Company, kanye nowayengumongameli we-Oklahoma City Geophysical Society. “Akukho ukungabaza ngakho. Kubekwe ngokucacile lapho, kodwa angazi ukuthi ubani obengakwenza,” etshela intatheli.
Izazi zegeology uDelbert Smith noDurwood Pate baye endaweni ukuyohlaziya ukwakheka nokuqoqa amasampula, ngokusho kwephephandaba. “Ngiyaqiniseka ukuthi lokhu akukona ukwakheka kwemvelo komhlaba, kodwa into edalwe ngezandla zomuntu,” Kusho uSmith kamuva.
Ezinsukwini ezimbili kamuva, ngo-June 29, 1969, esinye isihloko sezindaba mayelana nalokhu okutholakele savela ephephandabeni "Tulsa World". Lapho amazwi kaDelbert Smith anikezwe ngokunembe kakhudlwana futhi ukuphola kwento kwazwakala okokuqala ngqa:
"Akukho kungabaza ngalokho. Ifakwe ngokukhethekile, kodwa angazi ukuthi yenziwe ngubani.”
“Olunye uhlangothi lwempicabadala luhlobene nokuqomisana. Kunemibono ehlukene mayelana nesayensi yokwakheka komhlaba ehilelekile, kodwa izilinganiso ezinembile kakhulu zeminyaka yalawa mathayili ziyiminyaka eyizinkulungwane ezingu-200.”
Uphenyo lwaqhubeka. Ukutholwa kwembobo yesibili ku “Isithombe” kwabikwa kuyiThe Oklahoman ngoJulayi 1, 1969. Ngokwemiphumela yezilinganiso, kunebanga lamamitha amahlanu phakathi kwezimbobo ezimbili. NgokukaPate, idwala elisetshenziswa ukwenza i-mosaic liyingxube yezinhlamvu ze-limestone zasePermian kanye ne-quartz.
NgoJulayi 3, iphephandaba i-Oklahoman laqhubeka nokubika ngokutholakala, libonisa ukuthi ngokwemibiko yabavubukuli, "isando samatshe sasendulo" iphinde yatholakala endaweni.
"Impicabadala yokwakhiwa kwe-limestone ye-dolomite etholwe phakathi kwe-Oklahoma City ne-Edmond yenze kwaba nzima ngoLwesithathu ukutholakala kwento efana nesando endaweni."
Izazi zokuma komhlaba ezazinaka ukwakheka okungavamile zakuthola kunzima ukuchaza umsuka wokwakheka noma i-artifact. UJohn M. Ware, isazi sokuma komhlaba sase-Oklahoma City, uthe: “Ngeke kuchazwe ngokwesayensi yokwakheka komhlaba – sidinga isazi semivubukulo ukuze sinikeze umbono wokugcina. Nokho, ubudala baso nemvelaphi kungase kuhlale kuyimfihlakalo uma umvubukuli engakwazi ukumkholisa ukuba enze lo msebenzi ngokushesha.”
“Zingakapheli izinsuku ezingu-20 abakhi bazoqhubeka nomsebenzi wokumba le ndawo ukuze baqale ukwakha indawo yokugcina ukudla. Esinye isici esithakazelisayo saleli dwala ukuthi linezinsalela zasolwandle, okubonisa ukuthi lake laba phansi olwandle.”
UPate wanezela lokho "Ukwakheka kwe-100-by-60-foot kuyashesha ukukhanga izivakashi."
“Abantu bathutheleka lapho futhi baklebhule izingcezu zamatshe. Kufanele siwugcine kuze kube kukhona okwenziwayo ukuthola umsuka wawo.”
Ngeshwa, cishe ulwazi oluthe xaxa mayelana nalokhu kutholakala okuyisimanga kwabikwa kwabezindaba zase-Oklahoma ngemuva kwalokho, futhi okwenzeka ngempela kukho akukacaci kuze kube namuhla.
