Taimako mai juyawa

Sauye-sauye, yanayin da aka juya, ko juyawa na yanayin yana nufin fasalulluka na shimfidar wuri waɗanda suka juyar da girman su dangane da wasu fasalullukaka. Sau da yawa yakan faru ne lokacin da ƙananan wurare na wuri ya cika da laka ko laka wanda ya yi tauri zuwa kayan da ya fi tsayayya da rushewa fiye da kayan da ke kewaye da shi. Rugujewar bambance-bambance tana cire kayan da ba su da tsayayya, suna barin kayan da ke kewaye da su, wanda zai iya bayyana a matsayin tudun inda a baya akwai kwari. Ana amfani da kalmomi kamar "kwari mai juyawa" ko "channel mai juyawa " don bayyana irin waɗannan fasalulluka. An lura da sauƙin juyawa a saman wasu taurari da kuma Duniya. Misali, an gano taswirar da aka yi amfani da ita sosai a kan Mars.

 Kafawa 
Matakai da yawa na iya haifar da bene na bakin ciki ya zama mai tsayayya da rushewa fiye da gangaren da ke kewaye da shi da tsaunuka:

 Na farko, yashi mai laushi, kamar dutse, yana tarawa a cikin bakin ciki, watau, kwarin rafi ko tafkin tafkin. Na gaba, rushewa iska tana cire tsaunuka masu kyau a yankunan da ke kusa da bakin ciki. Wannan ya bar bayan mafi tsayayyen tsaunuka masu tsayi a matsayin tudu ko tudu, yayin da tashar ta sauya zuwa yankin da ke ƙasa.
 Kwarin kogin na iya cika da kayan dutsen wuta kamar lava ko tuff mai waldi da ke zubo a ciki. Wannan zai tsayayya da rushewa yayin da kewaye da shi ya rushe don ƙirƙirar tudu.
 Cementation na ƙasa da ma'adanai da aka narke a cikin ruwa na iya faruwa a cikin rami. A Duniya, wannan sau da yawa yana faruwa a cikin kwarin rafi sakamakon samar da duricrusts, watau, Silcrete ko ferricrete, ta hanyar pedogenesis. Ma'adanai don siminti na iya fitowa daga ruwan kasa. An yi tunanin cewa wani wuri mai ƙasƙanci kamar kwari yana mai da hankali kan ruwa, don haka ƙarin ruwa da ciment suna motsawa cikinsa, kuma wannan yana haifar da mafi girman matakin cimentation.J. C. Andrews‐Hanna, R. J. Phillips, and M. T. Zuber (2007), Meridiani Planum and the global hydrology of Mars, Nature, 446, 163–166, . Har ila yau, sinadarin da aka yi da siminti zai tsayayya da rushewa yayin da filin da ke kewaye da shi ya rushe don ƙirƙirar tudu ko tudu.
 Rushewar sassan sama masu tsayayya na anticlines na yankin da aka ninka, yana fallasa ƙananan sassan da ke ƙasa, wanda ke lalacewa da sauri yana barin syncline a matsayin saman mesa ko tudu.

 Misali 
Misali mai kyau na taimakon da aka juya shi ne Table Mountain, Tuolumne County, California. Ruwan dutse da yawa sun cika wani kwarin kogin na dā wanda ya yanke zuwa yamma ta tsakiyar Sierra Nevada zuwa kwarin tsakiya kimanin shekaru miliyan 10.5 da suka gabata. Wadannan raƙuman ruwa na Miocene sun cika wannan kwarin kogi na dā tare da jerin lavas na trachyandesite mai wadataccen potassium waɗanda suka fi tsayayya da rushewa fiye da Mesozoic siltstone da sauran dutse wanda aka yanke kwarin. Don haka, lalacewar bambancin da ta biyo baya ta bar waɗannan duwatsun dutsen wuta a matsayin tudu mai laushi, wanda yanzu yana tsaye sama da shimfidar wuri wanda ya fi zurfin lalacewar duwatsun Mesozoic.
Wani misali shine Table Mountain, Cape Town, inda asalin tsaunuka masu tsayayya na quartzitic sandstone na Cape Fold Belt suka lalace da farko, suna fallasa dutse mai tsayayya, wanda ya lalace da sauri, yana barin asalin kwarin a saman dutsen da ya rage.

 A kan Maris 
Sauye-sauye a cikin nau'ikan tuddai masu juyawa, waɗanda ke nuna tsoffin tashoshin ruwa, ana jayayya da su a matsayin shaidar tashoshin ruwan a saman Martian a baya. Misali shine Miyamoto Crater, wanda aka gabatar a cikin 2010 a matsayin wurin da za a iya bincika don shaidar rayuwa a kan Mars.

Sauran misalai an nuna su a cikin hotunan da ke ƙasa.

 Yankin da aka juya a cikin Aeolis quadrangle 

 Yankin da aka juya a cikin quadrangle na Amazonis 

 Manazarta 

Rukuni:Shafuka masu fassarorin da ba'a duba ba