Yini ama-moraines

I-moraine emaphakathi

Uma sikhuluma ngendawo yeqhwa, sihlaziya ezinye zezinto ezisisiza ukuthi siqonde amandla ayo nokuziphendukela kwemvelo. Njengoba sazi, izinguzunga zeqhwa zezintaba zikhiqiza indawo ethakazelisa kakhulu nama-geomorphologies ongawathola. Enye yezinto ezakhiwe eduze kwe- izinguzunga zeqhwa yilezi msobe. Kuyinto uhla lwezintaba zezinto zeqhwa ezingabekiwe. AmaMoraines ahlukaniswa ngokobudlelwano bawo neqhwa.

Kule ndatshana sizongena ngokujulile kuma-moraines, yiziphi izinhlobo ezikhona, ukuthi zakhiwa kanjani nokuthi yini ukubaluleka kwazo ngamaqhwa eqhwa.

Yini ama-moraines

Ama-moraines we-lateral

Into yokuqala okumele sicacelwe ngayo ukuthi iyini i-moraine. Kuyintaba encane eyakhiwe ngento esiyibiza ngokuthi yi-till. Lokhu kulima akuyona into engaphezu kwezinto ezenziwe ngamaqhwa futhi lokho akuhlukanisiwe. Okokusebenza akukaze kube kule ndawo futhi akuhambisananga nesisindo seqhwa nokudlula kweminyaka. Uma sicabanga ukuthi amandla eqhwa asebenza kanjani, sizobona ukuthi ukunqwabelana kweqhwa kwenzeka njalo ngonyaka ngemuva kwenkathi yasebusika. Ngemuva kokuwa kweqhwa, lihlangana ngenxa yomphumela wamandla adonsela phansi futhi lihlukane nezendlalelo zeqhwa eliwile futhi elingancibiliki eminyakeni eyedlule.

Ngale ndlela kusungulwa iphrofayili yokuwa kweqhwa. Uma sijula ​​kakhulu, sizobe siphenya ngeminyaka edlule. Isethi yezendlalelo zeqhwa ibizwa ngokuthi yi-stratifications. Yebo, lapho zonke ezinye izinto zinqwabelene (ngomqondo ongokomfanekiso) kodwa ngaphandle kokuba zihlukaniswe, kubizwa ngokuthi yi-till.

Kunezinhlobo ezahlukahlukene zama-moraines kuya ngobudlelwano enabo neqhwa elikhona. Sizohlaziya izinhlobo ezahlukahlukene zama-moraines:

  • Ingemuva moraine. Luhlobo lwe-moraine olwakhiwa ngaphansi kweqhwa leqhwa. Le nqwaba yokulima izoba embhedeni futhi izothinteka ukuncibilika kweqhwa nokugeleza kwamanzi ancibilikayo.
  • I-moraine yesikhashana. Yilapho izinto zitholakala khona emaphethelweni ombhede weqhwa. Ezinhlangothini zamashidi eqhwa ungabona zonke izinto ezakha le moraine.
  • I-moraine emaphakathi. Lapho ama-moraines asemaceleni efinyelela ebangeni elikhulu kakhulu, kungenzeka ukuthi ahlangane enkabeni yesigodi lapho izinguzunga zeqhwa ezimbili zihlangana khona. Le nyunyana ibizwa ngokuthi yi-moraine emaphakathi.
  • I-moraine yesikhumulo. Akhiwa ama-glacier debris deposits. Imvamisa zitholakala ekugcineni kweqhwa futhi kungumphumela wokuthuthwa kwalezi zinto nomphumela wamandla adonsela phansi.
  • I-ablation moraine. Yilezo ezibekwe embhedeni wenguzunga yeqhwa.

Izici eziyinhloko

Izinhlobo ze-moraines

Izici zama-moraines zifingqiwe kokuqukethwe kwamabhulokhi eqhwa angaguquki nezinto ezifana nezicucu zamatshe ezihlelwe kukho konke ukuwela kweqhwa. Iqhwa lihudula izinto zenhlabathi ngesisindo salo nangokuqhubeka lincibilike njalo ngonyaka. Ngalesi sizathu, ukukhululeka kuguqulwa ngokuhamba kweminyaka neminyaka kuze kube yilapho kwakhiwa izigodi zeqhwa nezinye izakhiwo.

Amatshe we-ablation moraines nawo aletha izinhlobo ezahlukahlukene zezinto ezitholakala embhedeni weqhwa. Enye into ebizwa nangokuthi i-moraine yisidumbu esixazululwa yiqhwa. Lokhu kungenxa yokuthi, ngemuva kwalo lonke uhambo oluthathe ezindaweni eziphakeme, inguzunga yeqhwa ihudula zonke izinto ezitholakale endleleni.

Kuze kube namandla

Iziduli ezifakwe ngaphakathi

Esikubiza ngokuthi ukulima kunqwabelana kwezidalwa okuvela eqhweni nasemandleni alo. Bangabizwa nangokuthi ukudonsa noma ukuhudula kweqhwa lapho kwakhiwa amaqembu ahluke ngokuphelele akhiqizwa eqhweni. I-till iyisiqeshana se-glacial drift esibekwe endleleni.

Lezi zici zisho ukuthi ukwakheka kwethayi akufani ngaso sonke isikhathi. Singathola imixube yobumba, amatshe, ugwadule nesihlabathi. Ubumba kuma-till bunomumo oyindilinga ngemuva kokunyakaza nokuqongelela okulandelayo. Babizwa ngokuthi kuze amabhola. Lawa mabhola aginqika eceleni kombhede womfudlana futhi angangeza amatshe ekwakhekeni kwawo. Lokhu okwenzayo ukuthi kugcina kuqeda yonke indlela embozwe ngamatshe.

Lawa amabhola we-till avame ukubizwa ngokuthi yi-armored kuze kube amabhola ngoba anamadwala amaningi. Konke lokhu okubizwa ngokuthi yi-till kufakwa ekugcineni kwe-moraine, ezinhlangothini, phakathi nasesisekelweni. Njengoba isikhathi sokuncibilika sifika futhi inguzunga yeqhwa iqala ukuncibilika, uquqaba lwe-till luhudula lubeke kuma-sandurs emifula aqhamuka eqhweni. Lokhu kuphawuleka kakhulu uma kuyinguzunga yeqhwa yezwekazi eqala ukuncibilika. AmaTill angaphinde athwale amadiphozithi athile aqukethe amaminerali noma amatshe ayigugu. Lezi zinto ziqoqwa kulo lonke uhambo lwenguzunga yeqhwa futhi zithole inani elikhulu lezomnotho ngokuba okuthile okuhlukile. Isibonelo, kwenzeka ngamadayimane eWisconsin, e-Indiana naseCanada.

Ochwepheshe ekufuneni lawa amaminerali bagxila ekulandeleni imikhondo efakwa yi-tills futhi bayisebenzise njengezinkomba zokwazi ukuthi i-glacier ibheke ngakuphi ngesikhathi sokwehla kwentaba. Phakathi kwamadiphozidi afunwa kakhulu kunalawo e-kimberlite, lawa ngamadiphozithi lapho ungathola khona amadayimane amaningi noma izinhlobo ezahlukene zamaminerali.

Kunezimo eziningana lapho ungathola khona ukuqina okuqinile noma okushisiwe. Lokhu kwenzeka ngoba bangcwatshwe futhi, ngokucindezela kwezingqimba ezingenhla sekuyidwala. Lolu hlobo lwedwala lwaziwa njenge-tillite futhi luwuhlobo lwedwala lentengayo.

Ngiyethemba ukuthi ngalolu lwazi ungafunda kabanzi ngama-moraines nama-till.


Okuqukethwe yi-athikili kunamathela ezimisweni zethu ze izimiso zokuhlelela. Ukubika iphutha chofoza lapha.

Yiba ngowokuqala ukuphawula

Shiya umbono wakho

Ikheli lakho le ngeke ishicilelwe. Ezidingekayo ibhalwe nge *

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  1. Ubhekele imininingwane: Miguel Ángel Gatón
  2. Inhloso yedatha: Lawula Ugaxekile, ukuphathwa kwamazwana.
  3. Ukusemthethweni: Imvume yakho
  4. Ukuxhumana kwemininingwane: Imininingwane ngeke idluliselwe kubantu besithathu ngaphandle kwesibopho esisemthethweni.
  5. Isitoreji sedatha: Idatabase ebanjwe yi-Occentus Networks (EU)
  6. Amalungelo: Nganoma yisiphi isikhathi ungakhawulela, uthole futhi ususe imininingwane yakho.