Ingingo ziri mu gice cy'uruti ziterwa n'izamuka ry'udusimba twa mica duto cyane, aho kuba zicitse ku gice cy'uruti rw'inyuma.
Ibuye ry’umukara rikorwa iyo ibuye ry’umukara, shale, cyangwa felsic igneous rock rishyinguwe kandi rigashyirwa mu bushyuhe n’umuvuduko muto.
Ibara ry'urusyo ni ryiza cyane kandi ntirigaragara ku maso y'umuntu. Ibara ry'urusyo rifite ubuso budasobanutse neza ariko riraryoshye ukoresheje kandi mbere ryakoreshwaga mu kubaka ibibaho by'umukara. Ingano nto ya mica ya silk ituma ruba nk'ikirahure cy'ubudodo bwa silk.

Ibara ry'umukara rigaragara mu mabara atandukanye bitewe n'itandukaniro ry'imiterere y'imyunyungugu n'imiterere y'ingufu mu bidukikije by'umwimerere. Urugero, ibara ry'umukara ryakozwe mu bidukikije bitarimo umwuka wa ogisijeni, ariko ibara ry'umutuku ryakozwe mu bidukikije birimo umwuka wa ogisijeni.
Slate ibaho mu gihe cy'ubushyuhe n'umuvuduko biri hasi, bityo ibisigazwa by'ibimera n'ibintu bimwe na bimwe by'ubuhanga bishobora kubikwa.

Ibumba ricukurwa mu mabuye manini kandi rikoreshwa mu bikoresho by'amashanyarazi, aho gukorera, ku mbaho z'umukara, no hasi kubera ko rimeze nk'isahani, rikomera kandi rigasenyuka. Amabuye mato akoreshwa mu kubaka ibisenge.
Byaba umusozi muremure cyangwa ikibaya kinini, umujyi munini wuzuye abantu cyangwa icyaro gituje, imiterere itangaje ya slate n'ubwiza bwayo buhamye bitanga inkunga ihoraho ku buzima bw'abantu n'akazi kabo. Iyi ni slate, ubuzima bw'ibanze ariko buhamye, ibuye ribika inkuru n'ibyibuka by'imyaka ibarirwa muri za miriyari.
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