Yuav ua li cas yog ib tug Arete txawv ntawm ib tug horn?
Yuav ua li cas yog ib tug Arete txawv ntawm ib tug horn?

Video: Yuav ua li cas yog ib tug Arete txawv ntawm ib tug horn?

Video: Yuav ua li cas yog ib tug Arete txawv ntawm ib tug horn?
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Ib cov arête yog ib tug nyias, crest ntawm pob zeb sab laug tom qab ob tug glaciers uas nyob ib sab tau hnav ib tug ntxhab ridge rau hauv lub pob zeb. A horn tshwm sim thaum glaciers erodes peb los yog ntau tshaj arêtes, feem ntau tsim ib tug ntse-edged ncov. Cirques yog concave, ncig basins carved los ntawm lub hauv paus ntawm glacier raws li nws erodes toj roob hauv pes.

Nyob rau hauv no txoj kev, dab tsi yog ib tug horn thiab nyob qhov twg ib tug tsim?

A horn yog lub ncov uas daim ntawv los ntawm peb arêtes. Nws tseem hu ua lub ncov pyramidal. Ib arête yog lub ntug uas daim ntawv nyob rau hauv cov av los ntawm cirque yaig, los yog thaum ob cirque glaciers daim ntawv tawm tsam ib leeg, tsim kom muaj ntug ntse. Thaum ntau tshaj ob arêtes sib ntsib, qhov no yog a horn.

Qhov thib ob, Arete tsim li cas? Ib qho arête yog nqaim qaum ntawm pob zeb uas cais ob lub hav. Nws yog feem ntau tsim thaum ob dej khov erodes parallel U-puab hav. Arêtes tuaj yeem tsim tau thaum ob lub glacial cirques eroded headwards ntawm ib leeg, txawm hais tias feem ntau qhov no ua rau lub eeb-puab hla, hu ua col.

Ib yam li ntawd, nws yog nug, dab tsi yog lub horn saum roob?

Lub ncov pyramidal, qee zaum hu ua glacial horn nyob rau hauv cov xwm txheej heev, yog angular, sharply taw tes roob ncov uas tshwm sim los ntawm lub cirque yaig vim muaj ntau yam glaciers diverging los ntawm lub hauv paus ntsiab lus.

Puas yog horn erosion lossis deposition?

Continental glaciers loj heev. Valley glaciers tsim ntau yam tshwj xeeb los ntawm kev yaig , suav nrog cirques, arêtes, thiab horn . Glaciers tso lawv cov sediment thaum lawv yaj. Landforms deposited los ntawm glaciers muaj xws li drumlins, kettle pas dej, thiab eskers.

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