Raws li ib tug tshwm sim, nws tsim ib tug Moraine? diluvium

Residues ntawm pob zeb no tau tsiv glacier txawv mus, uas tsim nyob rau Moraine. Raws li ib feem ntawm qhov no muaj ntau haiv neeg loj yuav tsum pom av nplaum hais, xuab zeb, gravel residues, raws li zoo raws li ntau daim thiab ntau thiab tsawg lub pob zeb uas striated nyob rau hauv ib txoj kev thiab muaj grooves nyob rau hauv nws saum npoo.

Glacial deposits thiab landforms

Glaciers yog ncaj qha mus muab kev koom tes nyob rau hauv lub tsim ntawm lub ntiaj teb topography. Lawv tsim nyob rau hauv lub climatic ib ncig chaw ntawm lub ncov qaumteb qabteb cheeb tsam thaum muaj kev kub altitude nyob rau hauv lub roob. glacier zog yog tshwm sim los ntawm ib yam ntawm cov qualities ntawm cov dej khov, muaj peev xwm hloov qhov chaw ntawm ib tug tej siab. Nyob rau tib lub sij hawm ib qho tseem ceeb qhov chaw occupies plasticity ntawm dej khov, uas tsub kom nyob rau hauv ncaj qha kev faib ua feem rau qhov kub thiab txias. Raws li ib tug txoj cai, lub zog yuav siv sij hawm qhov chaw nyob rau hauv lub 30-meter qhov tob.

Thaum tsav tsheb tej zaum yuav hloov tus thawj hauv daim ntawv ntawm cov dej khov tsim hloov, tej kab nrib pleb, folds ntawm ntau daim thiab ntau thiab tsawg. Raws li rau cov kev ceev ntawm lub zog, ces nyob rau nruab nrab lawv yog me me, xeeb txog 100 meters ib xyoo. Raws li ib tug tshwm sim ntawm lub melting ntawm glaciers tsim flows ntawm meltwater thiab tag nrho cov glacial pas dej, uas yuav tsim tshiab, hloov lub nyob tus yeees ntawm deposits thiab cov kev hloov nyob rau hauv lub toj roob hauv pes.

Hom glacial deposits

Kwv yees li ib feem peb ntawm lub ntiaj teb nto them glaciers hitherto. Tam sim no lub cev yog 10%. Txawm tias ib tug tib glaciation yuav ua rau ntiaj teb no hloov. Tag nrho cov dej khov tso yuav tau muab faib ua ob yam loj pawg: txheeb thiab unsorted.

Teb rau ib lo lus nug, nrog cov uas tsim lub Moraine, nws yog tsim nyog los hais cov glacial deposits nws koom rau tej hom. Tshab plaws unsorted nws yuav tsis muaj npe hu ua, txawm hais tias nws zwm rau pab pawg neeg. Morena yog ib tug tsis zoo txheeb khib nyiab, tog twg los ncaj qha matched tos Glacier.

Tus lwm yam qeb muaj xws li glacial remnants txheeb dej. Lawv tseem muab faib rau cov cov kev faib nyob ze ntawm lub glacier, nyob rau hauv ncaj qha kev sib cuag nrog nws, thiab cov seem uas tau raug ntxuav tshaj tus dej ntws los cov kwj ntawm cov melted.

Deposits rau cov kev sib cuag glacier

Faib glacial deposits yog haum varied qauv, los ntawm kev uas koj muaj peev xwm soj ntsuam cov variability cov ntaub ntawv ntawm nyem. Ntawm loj tshaj kev txaus siab yog deposits rau cov kev sib cuag nrog lub glacier. Xws li ib tug tsim raws li kame terraces originated los ntawm tsub zuj zuj ntawm ntau hom raws npoo ntawm glacier dej khov, yog dua li nyob rau hauv lub hav thiab reservoirs. Thaum cov dej khov melted, cov tawg tsam raug sib cais raws lub sab ntawm tus kwj ha. Cov uas poob nyob rau hauv cov dej khov, coj mus rau collapses thiab landslides. Ib tug toj hu ua educated kamami.

Eskers - lwm sorted glacial txo, li ib tug yoj zoo li ridges, muaj raws ntawm loj pob zeb thiab xuab zeb gravel. Ib zaug thaum ib lub sij hawm lawv nyob rau hauv qab ntawm lub qhov dej thiab tsis tshua xaiv rau ntawm qhov chaw.

Moraine: tus yam ntxwv ntawm E. V. Shantseru

Major moraines yog muaj li ntawm txawv hais nyob rau hauv loj, xws li los ntawm av nplaum thiab xaus nrog lub pob zeb loj. Yam ntxwv nta yog areal tshwm sim, check tsiaj clastic cov ntaub ntawv thiab tsis muaj cuab khaubncaws sab nraud povtseg. Ntxiv puas khoom siv ntawm no hom Moraine, yus muaj los ntawm kev kub ceev, tej zaum yuav tshwm sim residues sawmills, kiag li atypical rau cheeb tsam no. Vim nws durability, qhov no cov ntaub ntawv uas yuav siv tau koom nyob rau hauv kev tsim kho tej hauj lwm.

Muaj pes tsawg leeg thiab cov xim yam ntxwv ntawm lub Moraine muaj ib tug yawm tus ntawm cov geological qauv ntawm cov glacier. Thaum nws melts nyob rau hav slopes ib tug tej yam muaj pes tsawg tus ntawm khaubncaws sab nraud povtseg longline hom uas yuav muab lub hauv tag nrho Moraine terraces. Lub hiob deposits thiab xoob khib nyiab yog smoothed los yog kiag li ntxuav tam sim ntawd los ntawm qhuav dej, cua hlob roob dej ntws.

Morena muaj li ntawm glacial formations

Glacial pab pawg neeg sediments yus muaj los ntawm ib tug ntau ntau yam, thiab muaj xws li:

• glacial moraines;
• glaciofluvial sediments los ntawm melting glaciers;
• limnoglyatsialnye remnants ntawm glacial dej;
• solifluction deposits;
• glacial marine sediments.

Raws li ib tug tshwm sim, nws tsim ib tug Moraine? Cov dej khov formations deposits yog tsis zoo txheeb thiab tawg tsam muaj rau hauv daim ntawv ntawm pawg ntawm txawv blocks, pob zeb, tov nrog xuab zeb thiab av nplaum. Thaum xub thawj siab ib muag, tag nrho cov loj yog kiag li haphazard txoj kev, tab sis nws tsis yog. Thaum los ze zog thiab los ze zog kev soj ntsuam nws yuav xaus lus tias tus melting ntawm cov dej khov nyob hauv khaubncaws sab nraud povtseg Moraine pauv mus rau nws lub hauv paus. Tab sis tej zaum ib tug muaj zog nyob rau hauv-dej khov ntws yog kom huv si ntxuav Moraine, raws li ib tug tshwm sim ntawm nws yog ib tug loj tus naj npawb ntawm loj boulders.

Peb hom kev moraines

glacial moraines yog peb hom. Internal glacial Moraine tsim los ntawm lub allergic ntawm cov khib nyiab rau hauv lub puab khaubncaws sab nraud povtseg ntawm cov dej khov. Thaum lub sij hawm lub zog ntawm tus glaciers ntawm qhov ntau thiab struts lawv nyob nrog ib tug caij nplooj zeeg nyob rau hauv txoj kev ntawm pob zeb, boulders, xuab zeb thiab av nplaum. Qab Moraine tsim los ntawm scraping thiab hloov pob zeb residues, thiab ntxiv mus, nyob ntawm seb tej yam yam tseem ceeb ntawm lub zog thiab kev ceev ntawm lub zog yog cov ntaub ntawv uas sau nyob rau hauv nws tus kheej, lub hauv paus thiab nyob rau hauv lub tob khaubncaws sab nraud povtseg ntawm cov dej khov.

Terminal moraines raug tsim, raws li ib tug txoj cai, nyob rau ntawm ntug ntawm lub glacier. Cov pob zeb muaj nais raug tsim thaum ib tug glacier paj tau paj yog ib tug ntev lub sij hawm nyob rau hauv ib qhov chaw, thiab nyob rau tib lub sij hawm Glacier tauj no tsis tu ncua tshiab detrital khoom. Qhov no yog tau nyob rau hauv cov ntaub ntawv ntawm kev txwv ntawm txav ntawm cov glacier vim tej projections los yog lwm yam obstacles. End Moraine nrog lawv cov tsos tsa lub toj thiab ridges uas yog thaum uas tig mus rau txhua lwm yam. Tej lug tsis yog khoom pob zeb, tab sis xoob khaubncaws sab nraud povtseg ntawm cov hav dej los yog pas dej sediments uas coj glacier.

Moraine: txhua yam kev faib

Nyob rau hauv nws muaj pes tsawg leeg, lub Moraine yog ib tug zoo kawg li muaj ntau haiv neeg. Cov nram qab no hom ntawm glacial Moraine:

• mob rocky;
• xuab zeb;
• zeb av zoo ua qoob;
• loamy;
• av nplaum.

Nyob rau hauv cov ntshiab daim ntawv Moraine heev tsis tshua muaj, feem ntau yog tshwm sim nyob rau tej qhov chaw mixed muaj pes tsawg leeg. Yuav kom zoo kuaj thiab kawm glacial deposits, ib txoj kev tshawb ntawm pob zeb thiab cov ntaub ntawv yog tsis txaus, koj yuav tsum to taub lawv paragenetic kev sib raug zoo nrog rau lwm cov koom haum.

Tshwj xeeb nta ntawm lub Moraine

Multi-daim ntaub ntawv yog xaiv glacier zawv zawg, uas Moraine tsim, uas yuav ob leeg yuav thauj (rooj noj) thiab ncua (ice sib cais los ntawm cov dej khov formations caj hom). Morena yuav nyob ua ib ke raws li ib tug nyias muaj nyias ib daim ntawv ntawm cov glacial toj roob hauv pes. Mas muaj li ntawm xoob sediments uas yog raug rau lub nras, drumlins thiab Moraine toj thiab reliefs.

Dej-glacial deposits tau nyob rau hauv lub chav kawm ntawm sedimentation rau hauv lub Upper txheej ntawm cov glacier. Morena hom yog lawm ua tus sau nrog coarse gravel thiab loj boulders. End deposits tsim nyob rau zaum kawg taw tes ntawm cov glacier txav mus rau thaum pib ntawm melting. Moraine muaj pes tsawg leeg ntawm minerals (quartz, mica, Feldspar) yog ncaj qha nyob rau hauv cov pob zeb lawv tus kheej podmyatyh nyob rau hauv cov dej khov lub cev. Nws kuj los ntawm txoj hauj lwm ntawm glacial Moraine nyob rau hauv loj, raws li zoo raws li hloov dab residues thaum lub sij hawm heev mus txawv tebchaws.

Glacial deposits yog ob qho tib si continental thiab mountainous. Lawv txawv nyob rau hauv ib tug xov tooj ntawm tsis, nyob rau hauv particular cov txheej txheem ntawm nyem tsim thiab cov duab, muaj pes tsawg leeg thiab txo hom.