Dab tsi yog geology ntawm Grand Canyon?
Dab tsi yog geology ntawm Grand Canyon?

Video: Dab tsi yog geology ntawm Grand Canyon?

Video: Dab tsi yog geology ntawm Grand Canyon?
Video: What's the Dirt on ... Dirt? 2024, Kaum ib hlis
Anonim

Cov geology ntawm Grand Canyon thaj chaw muaj xws li ib qho ntawm feem ua tiav thiab kawm ua ntu zus ntawm pob zeb hauv ntiaj teb. Ze li ntawm 40 qhov loj sedimentary pob zeb txheej nthuav tawm hauv Grand Canyon thiab hauv Grand Canyon National Park cheeb tsam muaj hnub nyoog li ntawm 200 lab mus rau ze li 2 billion xyoo.

Tsis tas li ntawd, hom pob zeb twg ua rau Grand Canyon?

Peb hom tseem ceeb ntawm sedimentary pob zeb ntawm Grand Canyon yog sandstone, shale (los yog av nkos), thiab limestone. Metamorphic pob zeb yog cov pob zeb uas tau hloov pauv hauv qhov kub thiab txias. Lub pob zeb qub tuaj yeem yog sedimentary , igneous, los yog txawm metamorphic.

Ib yam li ntawd, yog vim li cas Grand Canyon thiaj li tseem ceeb geologically? Grand Canyon Geology. Lub National Park yog ib qho ntawm ntau haiv neeg thiab kawm ntau qhov chaw hauv ntiaj teb rau nws geological uniqueness thiab amazing formations. Cov Canyon nws tus kheej tau carved los ntawm Colorado River thiab cua uas ua rau saum npoo ntawm cov pob zeb sedimentary tau nthuav tawm thiab eroded dhau sijhawm.

Tom qab ntawd, lo lus nug yog, dab tsi yog keeb kwm geological ntawm Grand Canyon?

Zaj dab neeg li cas Grand Canyon tuaj yuav pib nrog tsim ntawm cov txheej thiab txheej ntawm pob zeb uas cov hav dej cua dhau. Zaj dab neeg pib txog 2 billion xyoo dhau los thaum cov pob zeb tsis zoo thiab cov pob zeb metamorphic tau tsim. Tom qab ntawd, txheej txheej ntawm cov pob zeb sedimentary tau muab tso rau saum cov pob zeb hauv qab no.

Dab tsi yog Grand Canyon zoo li 340 lab xyoo dhau los?

Cov Grand Canyon cov dab neeg pib ze li ntawm 2 billion xyoo dhau los thaum Vishnu hauv qab daus pob zeb tau tsim los ntawm kev kub ntxhov thiab siab. Txawm hais tias cov pob zeb no pom los ntawm Colorado River, qhov hav dej nws tus kheej tsis tau pib tsim kom txog thaum kwv yees li 70 lab xyoo dhau los.

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