Ka lua o Chicxulub

wahi lua pele chicxulub

El lua pele chicxulub He lua pele ia e pili ana i ke kaona o Chicxulub ma ka moku Yucatan ma Mekiko. He 180 km kona anawaena a ua ʻike ʻia i ka makahiki 1970 e Antonio Camargo lāua ʻo Glenn Penfield. Mai ia manawa, ua aʻo ʻia e nā ʻepekema he nui e hana nei no ka hui ʻaila ʻaila Mekiko i ka mokuʻāina e ʻimi ai i nā waihona aila. ʻO ia ke kolu o ka lua lua nui loa o kona ʻano ma ka honua holoʻokoʻa.

Ma kēia ʻatikala e haʻi aku mākou iā ʻoe i nā ʻano a me nā mea nui o ka lua o Chicxulub.

Historia

ka hopena meteor

Aia ka lua pele ma kahi kokoke i ke kaona o Chicxulub ma ka moku ʻo Yucatan o Mexico, ma 19° 18' latitu hema a me 127° 46' longitude hikina. Me he 180 mika ke anawaena a he 900 mika ka hohonu, ʻo ia ke kolu o ka lua pele nui loa ma ka Honua. Wahi a nā noiʻi, ʻo nā hōʻailona mua o kēia lua lua mai ka makahiki 1960, wahi a Jaime Urrutia Fucugauchi, he mea noiʻi ma ka Institute of Geophysics o ke Kulanui Autonomous o Mexico (UNAM), nāna i hōʻoiaʻiʻo ma hope o ka ʻimi ʻana i ka lalo o ke Kaiwa o Mexico. , ma ka Yucatan Peninsula Ua ʻike ʻia kekahi mau anomali umekaumaha ma ka papa carbonate.

ʻAʻole e like me nā hale ʻāina maʻamau me nā ʻano ʻano like ʻole, ʻike ʻia nā kiʻi ma ke ʻano he poepoe a concentric. ʻOiai ʻo kona nui, ʻaʻole i ʻike ʻia a hiki i 1970 e nā geophysicists ʻo Antonio Camargo lāua ʻo Glenn Penfield i ka wā o kahi noiʻi ʻaila.

Ua nānā ʻo Penfield i ka ʻike i hōʻiliʻili ʻia ma ka ʻĀkau Yucatan a loaʻa he apo i loko o ke apo he 70-kilomita ke anawaena. Ua loaʻa i nā Geophysicists nā palapala ʻāina o ka pūlima gravity o ka peninsula i hana ʻia i nā makahiki 1960.

Ua loaʻa ʻo Penfield i kahi pio hou, ʻoiai aia kēia ma ka peninsula ʻo Yucatan me kona piko e kuhikuhi ana i ka ʻākau. I ka hoʻohālikelike ʻana i nā palapala ʻāina ʻelua, ʻike ʻo ia he ʻelua arcs (ʻo ka mea ma ka palapala 1960s a me ka mea i loaʻa iā ia) i hana i ka pōʻai 180 mau kilomita ke anawaena me kona kikowaena kokoke loa i ke kūlanakauhale ʻo Chicxulub.

Ke kūlana o ka lua o Chicxulub

Nā hiʻohiʻona o Chicxulub Crater

Aneane maopopo loa ka poe Geophysicists ua kumu keia ano geophysical o ka Yucatan Peninsula e ka cataclysm i kekahi manawa o ka moolelo honua honua. mai ka wā Cretaceous hope loa, ma kahi o 65 miliona mau makahiki aku nei. Ua manaʻo ʻia ʻo ka meteorite ma kahi o 10 mau kilomita ke anawaena, no laila, i ka wā i hui ai, ua hana ʻia he lua pele me ke anawaena o 180 kilomita, e hoʻokuʻu ana i ka ikehu i manaʻo ʻia he 4,3 × 10²³ joules, e like me 191.793 gigatons o TNT (dynamite) i ka manawa mana. .

ʻO ka hopena i hoʻokumu i kahi kai eʻe nui ma nā ʻaoʻao āpau i luku ai i ka mokupuni ʻo Cuba. Hoʻololi ka lepo a me nā ʻōpala i nā loli kaiapuni e uhi pono i ka ʻili o ka honua me nā ao lepo.

Ua kūlike kēia kaʻina me ka kuhiakau o ka mea physicist ʻAmelika ʻo Luis Walter Alvarez a me kāna keiki ʻo Walter Alvarez ka mea kālaihonua e pili ana i ka pau ʻana o nā dinosaurs, ka mea i manaʻoʻiʻo ua hiki ke pā ʻia e ka meteorite o kēia nui. Ua ʻae nui ʻia kēia manaʻo e ka ʻepekema ʻepekema.

ʻO ka mea hōʻike nui he ʻāpana lahilahi a hoʻopuehu o ka iridium ma kēia palena ʻāina a puni ka honua. ʻO ka Iridium he metala kakaʻikahi ma ka Honua, akā nui ia i nā meteorites. Manaʻo ʻia kēia hopena he ʻāpana a i ʻole ka pau ʻana ma waena o nā wā Cretaceous a me Tertiary.

Ua lilo ka lua pele i ke kumuhana o ka noiʻi geochemical, ka loiloi kumu, ka microscopy electron a me ka stratigraphy, a me nā mea ʻē aʻe, i alakaʻi i nā kuhiakau ikaika, me ka mea e pili ana ka projectile ma kahi o 10 mau kilomita ke anawaena a komo i ka peninsula stratigraphic o ka Honua ma ka māmā holo o 10 kilomika i kekona.

He kuʻi kiʻekiʻe paha ia, no ka mea, ʻo ia wale nō ke ala e wehewehe ai i ke koena o ka mea, a aia nā mea hōʻike i ke kiʻekiʻe o ka wela a me ke kaomi o ka hopena i hoʻoheheʻe ʻia.

Nā kuhikuhi nui

lua pohihihi

Mālama maikaʻi ʻia ka lua, ʻo ka paʻakikī ʻaʻole ia he kīʻaha, akā he mea ʻokoʻa, hiki ke wehewehe ʻia e like me ke ʻano o nā apo concentric, ʻo ka hoʻohālikelike kūpono e noʻonoʻo ai e like me ka hoʻolei ʻana i ka pōhaku i loko o ka wai a me ke apo a. ka convex waena, i ʻike ʻia ma ka geophysics ma ke ʻano he kiʻekiʻe o ka hale kikowaena.

Uhi ia e 2 a 3 kilomika o ka sediment, la i ʻole he mea kānalua ke kōkua i ka pale ʻana, ʻoiai aia ma lalo o ka wai, i hōʻoia ʻia e nā ana ʻumekaumaha i hana ʻia e ka moku noiʻi ʻo Maurice Ewing.

Ma hope o ka nānā ʻana i ke ʻano o ka lua, ʻike mākou he ʻehā mau papa e hōʻike ana i ka hoʻomau o nā hanana i hana ʻia: ʻo ka papa haʻahaʻa ma mua o ka hui ʻana he microfossils maʻamau o ka wā Cretaceous; a laila ʻo ka papa o nā mea i hoʻokuʻu ʻia i ka wā o ka hui ʻana; ma luna o ia mea, ʻo ia ka papa i hana ʻia e nā koena o ka "pōkole ahi" a hope ka sediment ma hope o ka pōʻino.

ʻOkoʻa nā mōʻalihaku o ka papa mua a me ka papa hope, e hōʻike ana ua loli ke ʻano. Ma ka lima ʻē aʻe, ma waena o ka papa pyrosphere a me ka papa e pili ana i ka Cenozoic, aia kahi wahi me ka ʻole o nā koena mōʻalihaku, i kapa ʻia ʻo "ka ʻāpana kai ʻole", kahi hōʻailona o ka manawa moana. Hoʻihoʻi hou i ke ola a me nā kaiaola

Nā mea pohihihi o ka lua o Chicxulub

Ua kanu ʻia ka nui o nā mea pohihihi o ka Crater Chicxulub. Ua noi ʻo Mexico iā UNESCO e ʻike i ka lua. He liʻiliʻi ka mea hiki ke ʻike ʻia e ka poʻe mākaʻikaʻi no ka mea mai ka wā kahiko ka hopena.

Hele ka poʻe mākaʻikaʻi i kekahi o nā mea liʻiliʻi e kū nei, nā cenotes kupaianaha kahi e hiki ai iā ʻoe ke ʻauʻau i waena o nā iʻa a me nā aʻa e kau ana o nā kumulāʻau, ʻaʻole naʻe lākou i ʻike i ke ʻano o kēia mau hiʻohiʻona honua no ka mea ua hana ʻia lākou me ka limestone palupalu. Ua kipa pinepine ʻo Ocampo i ia wahi, akā manaʻoʻiʻo he kakaikahi ka poʻe i ʻike i ke koʻikoʻi. He wahi kū hoʻokahi ma ko kākou honua. ʻOiaʻiʻo a pono e mālama ʻia ma ke ʻano he World Heritage

Manaʻo wau me kēia ʻike hiki iā ʻoe ke aʻo hou e pili ana i ka lua o Chicxulub a me kona ʻano.

 


Hoʻopili ka ʻike o ka ʻatikala i kā mākou kumumanaʻo o ka hoʻoponopono hoʻoponopono. E hōʻike i kahi kaomi hemahema ʻaneʻi.

E lilo i mea mua e wehewehe

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  1. He kuleana no ka ʻikepili: Miguel Ángel Gatón
  2. Ke kumu o ka ʻikepili: kaohi SPAM, hoʻokele ʻōlelo.
  3. Legitimation: Kou ʻae
  4. Ka kamaʻilio ʻana o ka ʻikepili: ʻaʻole e hōʻike ʻia ka ʻikepili i nā ʻaoʻao ʻekolu koe ka mana o ke kānāwai.
  5. Pūnaewele mālama: Pūnaewele i mālama ʻia e Occentus Networks (EU)
  6. Nā Kuleana: I kēlā me kēia manawa hiki iā ʻoe ke palena, hoʻōla a kāpae i kāu ʻike.