Dab tsi ua rau marine regression?
Dab tsi ua rau marine regression?

Video: Dab tsi ua rau marine regression?

Video: Dab tsi ua rau marine regression?
Video: cas ntiaj teb nqaim ua luaj 29 /11/ 2021 2024, Kaum ib hlis
Anonim

Kev txhaum thiab regressions tej zaum ua rau los ntawm cov xwm txheej tectonic xws li orogenies, kev hloov pauv huab cua hnyav xws li cov hnub nyoog dej khov lossis kev hloov kho isostatic tom qab tshem tawm cov dej khov lossis cov av khib nyiab.

Ua raws li qhov no hauv kev xav, dab tsi tuaj yeem ua rau Paleozoic dej hiav txwv poob rau hauv marine regression?

Geologists xav tias cov Paleozoic marine kev txhaum thiab regressions yog qhov tshwm sim ntawm qhov txo qis thiab nce qhov loj ntawm glaciers npog thaj av.

Qhov thib ob, ua li cas thaum lub sij hawm regression geology? Thaum cov dej hauv cov dej hiav txwv nyob rau theem qis dua li lawv lub peev xwm, lub hiav txwv pib nthuav tawm cov av uas tau npog dhau los. Lub submerged seafloor yog nthuav tawm raws li qhov tshwm sim. Cov txheej txheem no hu ua regression . Txhua qhov kev hloov pauv peb pom yog kab rov tav es tsis yog ntsug.

Qhov thib ob, kev ua txhaum hauv hiav txwv thiab kev rov qab sib txawv li cas?

Marine regression . Marine regression yog txheej txheem geological tshwm sim thaum thaj chaw ntawm submerged seafloor raug nthuav tawm saum hiav txwv theem. Qhov kev tshwm sim opposite, marine transgression , tshwm sim thaum dej nyab los ntawm hiav txwv npog cov av yav tas los.

Kev txhaum thiab kev rov qab los yog dab tsi?

A kev txhaum yog ib tug landward hloov ntawm ntug hiav txwv thaum regression yog kev hloov pauv hauv hiav txwv. “ Kev txhaum "thiab" regressions ” feem ntau yog siv, piv txwv li, xa mus rau ntug dej hiav txwv kab hloov pauv vim glaciations, uas ua rau ob qho tib si eustatic sea-level hloov pauv thiab kev poob qis lossis rov qab los.

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