Dab tsi yog qhov ua rau ntawm marine regression?
Dab tsi yog qhov ua rau ntawm marine regression?

Video: Dab tsi yog qhov ua rau ntawm marine regression?

Video: Dab tsi yog qhov ua rau ntawm marine regression?
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A marine regression tshwm sim los ntawm kev txheeb ze dej hiav txwv-qib poob (yuav yuam regression ) los yog nce sediment mov thaum lub sij hawm thaum tus txheeb ze dej hiav txwv theem ruaj khov los yog txawm nce ua rau lub shoreline hloov seaward (ib txwm regression ) (Posamentier and Allen, 1999; Catuneanu, 2002).

Ib yam li ntawd, koj tuaj yeem nug, dab tsi ua rau marine regression?

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.

Qhov thib ob, 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.

Ua raws li qhov no hauv kev txiav txim siab, 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.

Lub pob zeb dab tsi qhia txog kev ua txhaum cai hauv hiav txwv?

Saib ntawm ib ntus nyob rau hauv daim duab hauv qab no thiab saib seb koj puas tuaj yeem txiav txim siab seb lub hiav txwv puas tau hla lossis rov qab los. Hauv qab, Tonto Group sawv cev rau a marine transgression : sandstone (11), shale (10), thiab limestone (9) nteg nyob rau hauv 30 lab xyoo ntawm lub sij hawm Cambrian.

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