Unearthing Feem Ntau Ancient ntawm Chav Tsev Complexes

Los ntawm Wendy Williams
Kev pab them nqi ntawm 5th International Deep Sea Coral Symposium, Amsterdam

"Ancient Coral Reefs" los ntawm Heinrich Harder (1858-1935) (The Wonderful Paleo Art of Heinrich Harder)

AMSTERDAM, NL, Lub Plaub Hlis 3, 2012 — Ib me ntsis ntau dua 65 lab xyoo dhau los, ib lub hnub qub poob rau hauv hiav txwv tsuas yog tawm ntawm ntug dej hiav txwv ntawm tam sim no Mexico lub Yucatan Peninsula. Peb paub txog qhov xwm txheej no vim tias kev sib tsoo tsim muaj kev tawg ntawm lub zog uas tau tso rau thoob ntiaj teb tattle-tale txheej ntawm iridium.

Tom qab kev sib tsoo tuaj ib qho kev ploj tuag uas tag nrho cov dinosaurs (tshwj tsis yog cov noog) ploj mus. Hauv hiav txwv, cov tseem ceeb ammonites tuag, zoo li ntau tus tsiaj loj xws li plesiosaurs loj heev. Ntau li 80 mus rau 90 feem pua ​​​​ntawm cov tsiaj hauv hiav txwv tej zaum yuav ploj mus.

Tab sis yog tias lub ntiaj teb tom qab sib tsoo yog lub ntiaj teb kev tuag - nws kuj yog lub ntiaj teb ntawm lub sijhawm.

Tsuas yog ob peb lab xyoo tom qab, nyob rau hauv lub hiav txwv tob ntawm dab tsi yog tam sim no lub nroog ntawm Faxe, Denmark (nws yog ib tug heev, sov lub sij hawm nyob rau hauv lub ntiaj teb no thiab dej hiav txwv theem siab dua), ib co peculiar corals tsim ib tug foothold. Lawv pib tsim mounds uas loj dua thiab siab dua nrog txhua xyoo txhiab xyoo dhau los, thaum kawg los ua, rau peb txoj kev xav niaj hnub no, cov chav tsev zoo heev uas zoo siab tos txais txhua yam kev ua neej hauv hiav txwv.

Cov mounds tau sau cov ntsiab lus. Lwm cov corals tau koom nrog lub kaw lus, nrog rau ntau hom marine hom. Dendrophylia candelabrum ua pov thawj tau zoo heev raws li ib tug architectural ncej. Thaum lub sij hawm lub ntiaj teb no txias dua thiab dej hiav txwv theem poob thiab cov coral tsev tsev, cov Cenozoic Co-Op Cities thaum ntxov, tau tso siab thiab qhuav, zoo dua 500 hom marine sib txawv tau tsim lawv tus kheej ntawm no.

Flash-forward rau peb tus kheej 21st Century. Kev lag luam kev lag luam mus sij hawm ntev tau tsim "qhov loj tshaj plaws neeg tsim nyob rau hauv Denmark," raws li Danish kws tshawb fawb Bodil Wesenberg Lauridsen ntawm University of Copenhagen, uas tau hais rau kev sib sau ua ke ntawm cov neeg tshawb nrhiav dej txias hauv Amsterdam lub lim tiam no.

Thaum cov kws tshawb fawb pib kawm qhov "qhov" no thiab lwm cov qauv geological nyob ze, lawv pom tau tias cov coral mounds thaum ub, yos rov qab 63 lab xyoo, yog qhov qub tshaj plaws uas paub thiab tuaj yeem ua cim thawj theem hluav taws xob ntawm cov qauv tshiab eco-tsim.

Ntawm cov tsiaj pom los ntawm cov kws tshawb fawb hauv "chaw tsev so" thaum ub, feem ntau tseem tsis tau txheeb xyuas.

Tsis tas li ntawd, tus kws tshawb fawb Danish tau hais rau nws cov neeg tuaj saib, ntau cov pob txha pob txha tseem nyob hauv cov mounds, tos kom pom. Hauv qee qhov chaw, kev khaws cia ntawm mounds tsis tau zoo, tab sis lwm ntu ntawm mounds tam sim no qhov chaw kawm tseem ceeb.

Puas muaj marine paleontologists nrhiav ib qhov project?