ʻIke ʻia ke aniani 12,000 makahiki o ka honua ma ka ʻāina ʻo ʻAmelika Hema, ua hoʻoholo ʻia ka mea pohihihi o ke kumu.

I ka wā ma mua, ua hoʻohana ʻia nā pukaaniani pepa mache ma Kina kahiko, a ʻo nā puka aniani wale nō i loaʻa i kēia manawa, e hana ana i nā paia pale aniani ma nā kūlanakauhale he mea nani loa, akā ua ʻike ʻia nā aniani he ʻumi kaukani makahiki ma ka honua. he alahele 75-kilomita o ka wao nahele ʻo Atacama ma ka ʻaoʻao ʻākau o ka ʻāina ʻo ʻAmelika Hema ʻo Chile.Hoʻopuehu ʻia nā waihona aniani silicate ʻeleʻele ma ka ʻāina, a ua hoʻāʻo ʻia lākou e noho ma ʻaneʻi no 12,000 mau makahiki, ma mua o ka hana ʻana o ke kanaka i ka ʻenehana hana aniani.Ua manaʻo ʻia kahi i loaʻa mai ai kēia mau mea aniani, no ka mea, ʻo ka puhi wela kiʻekiʻe wale nō ka mea e puhi ai i ka lepo one i nā kristal silicate, no laila ʻōlelo kekahi "ahi ahi" i hoʻokahi manawa ma ʻaneʻi.ʻO kahi noiʻi hou i alakaʻi ʻia e Brown University's Department of Earth, Environmental and Planetary Sciences e hōʻike ana ua hana ʻia ke aniani e ka wela koke o kahi comet kahiko i pahū ma luna o ka ʻili o ka Honua, e like me ka hōʻike ʻo Nov. 5 Yahoo News.ʻO ia hoʻi, ua hoʻoholo ʻia ka pohihihi o ke kumu o kēia mau aniani kahiko.
Ma ke aʻo ʻana o ke Kulanui ʻo Brown, i paʻi ʻia ma ka puke moʻolelo Geology, ʻōlelo ka poʻe noiʻi i nā laʻana o ke aniani wao nahele he mau ʻāpana liʻiliʻi i ʻike ʻole ʻia ma ka Honua.A pili pono nā minela i ka haku mele ʻana o nā mea i hoʻihoʻi ʻia mai i ka Honua e ka huakaʻi Stardust a NASA, nāna i hōʻiliʻili i nā ʻāpana mai kahi comet i kapa ʻia ʻo Wild 2. Ua hui pū ka hui me nā haʻawina ʻē aʻe e hoʻoholo ai ʻo kēia mau ʻāpana mineral ka hopena o kahi comet me kahi haku mele. like me Wild 2 i pahū ma kahi kokoke i ka Honua a hāʻule hapa a me ka wikiwiki i ka wao nahele ʻo Atacama, e hoʻopuka koke ana i nā wela kiʻekiʻe loa a hoʻoheheʻe i ka ʻili one, ʻoiai e waiho ana i kekahi o kāna mau mea ponoʻī.

Aia kēia mau kino aniani i ka wao nahele ʻo Atacama ma ka hikina o Kili, he pāpū ma ka ʻākau o Chile i palena ʻia e nā Andes i ka hikina a me ka pae kahakai ʻo Chile i ke komohana.No ka mea, ʻaʻohe mea hōʻike o ka lua pele ʻino ma ʻaneʻi, ʻo ka genesis o ke aniani ua hoʻohuli mau i ke kaiāulu geological a me geophysical e hana i nā noiʻi kūloko kūpono.

Aia i loko o kēia mau mea aniani kahi ʻāpana zircon, ka mea e hoʻoheheʻe thermally e hana i baddeleyite, kahi hoʻololi mineral e pono ai ke piʻi i nā mahana ma luna o 1600 degere, ʻaʻole ia he ahi honua.A i kēia manawa ua ʻike hou ka haʻawina ʻo Brown University i nā hui like ʻole o nā minerala i loaʻa wale i nā meteorites a me nā pōhaku extraterrestrial, e like me ka calcite, meteoric iron sulfide a me ka calcium-aluminum-rich inclusions, e pili ana i ka hōʻailona mineralogical o nā hōʻailona comet i lawe ʻia mai ka misionari Stardust a NASA. .Ua alakaʻi kēia i ka hopena o kēia manawa.