Quaternary Period txhais li cas?
Quaternary Period txhais li cas?

Video: Quaternary Period txhais li cas?

Video: Quaternary Period txhais li cas?
Video: 1st Indian Quaternary Congress 2022, Day 1_Morning Session 2024, Kaum ib hlis
Anonim

Cov Lub Sijhawm Quaternary yog lub sijhawm geological lub sij hawm uas suav nrog 2.6 lab xyoo dhau los - suav nrog hnub tam sim no. Cov lub sij hawm kuj pom qhov sawv ntawm ib tug tshiab predator: txiv neej.

Ib yam li ntawd, tib neeg nug, vim li cas nws thiaj hu ua Quaternary Period?

Geologic Time Naming System Nyob rau hauv thaum ntxov 1800's ib tug system rau naming lub sij hawm geology lub sij hawm tau tsim siv plaub lub sij hawm ntawm lub sijhawm geological. Lawv yog npe siv cov lus Latin hauv paus. Hauv Latin, quatr txhais tau tias plaub. Thaum ntxov geologists xaiv lub npe Quaternary rau plaub lub sij hawm hauv qhov system no.

Kev nyab xeeb nyob rau hauv Quaternary Period yog dab tsi? Cov huab cua ntawm Quaternary lub sij hawm pom ntau qhov txo qis hauv ntiaj teb kub (glacial lub sij hawm ) sib cais los ntawm sov (interglacial) lub sij hawm . Lub caij sov thiab dej khov tam sim no ntawm Holocene Epoch tuaj yeem yog qhov tshwm sim ntawm qhov kawg ntawm qhov kawg glaciation los yog huab cua tej zaum yuav yog ib feem ntawm interglaciel lub sij hawm.

Ntawm no, lub sijhawm Quaternary ntev npaum li cas?

Cov Lub Sijhawm Quaternary tau muab faib ua ob lub sijhawm: Pleistocene (2.588 lab xyoo dhau los txog 11.7 txhiab xyoo dhau los) thiab Holocene (11.7 txhiab xyoo dhau los txog niaj hnub no). Lub sij hawm tsis raws cai "Late Quaternary " hais txog 0.5-1.0 lab xyoo dhau los.

Cov nroj tsuag twg nyob rau lub sijhawm Quaternary?

Ntau cov nroj tsuag thiab hom nyob rau lub sijhawm Quaternary, suav nrog cov hav txwv yeem, tsob ntoo, cov nyom nyom, birch, ntoo thuv, spruce, ntoo qhib, maple thiab paj ntoo ntawm txhua hom. Qee cov tsiaj uas nyob rau lub sijhawm Quaternary: mammoth, mastodon, giant bison thiab woolly rhinoceros.

Pom zoo: