Ib tug crag thiab tus Tsov tus tw yog txawv los ntawm ib tug roche moutonnée los ntawm lub xub ntiag ntawm ib tug elongate, tapered ridge mus txog rau expanding downstream. Feem ntau ua los ntawm xaiv yaig ntawm softer strata, roche moutonnée toj roob hauv pes yog yam ntxwv ntawm glaciated crystalline shield thaj chaw.
Puas yog crags tsim los ntawm yaig?
Crags yog tsim thaum lub glacier lossis daim ntawv dej khov hla dhau ib cheeb tsam uas muaj cov pob zeb uas muaj zog. … Txawm li cas los xij, feem ntau lub Tail tau raug tshem tawm los ntawm kev yaig glacial. Glacial Deposition. Moraine - Qhov no yog cov khoom tsim los ntawm glacial yaig.
Roche Moutonnee tau tsim li cas?
Nyob rau hauv glaciology, ib tug roche moutonnée (los yog yaj) yog ib lub pob zeb tsim tsim los ntawm kev dhau ntawm lub glacier. Kev hla ntawm cov dej khov nab kuab dhau ntawm cov pob zeb hauv qab feem ntau ua rau cov ntaub ntawv asymmetric erosional raws li qhov tshwm sim ntawm kev puas tsuaj ntawm "stoss" (supstream) sab ntawm pob zeb thiab plucking ntawm "lee" (downstream) sab.
Corrie tsim li cas?
Corries form nyob rau hauv qhov chaw uas cov daus tuaj yeem sib sau. Cov daus compacts rau hauv dej khov thiab qhov no accumulates ntau xyoo kom compact thiab loj hlob mus rau hauv ib tug corrie/cirque glacier. Qhov no mam li txav mus rau toj vim yog lub ntiajteb txawj nqus thiab cov dej khov loj.
Cov av twg tsim los ntawm cov glaciers?
Glacier Landforms
- U-Shaped Valleys, Fjords, thiab Hanging Valleys. Glaciers carve ib txheej tshwj xeeb, ntxhab-walled, flat-bottomedhav. …
- Cirques. …
- Nunataks, Arêtes, thiab Horns. …
- Lateral thiab Medial Moraines. …
- Terminal thiab Recessional Moraines. …
- Glacial Till thiab Glacial Hmoov. …
- Glacial Erratics. …
- Glacial Striations.
