Iisampulu zeDedimentary Rock ezingama-24

Iindidi ezingama-24 / ibhokisi, ubungakanani bebhokisi 39.5x23x4.5cm

Iingxondorha zizonke zezimbiwa kwaye zezona zinto ziphambili ezakha umhlaba. Iliwa linokwenziwa ngolunye uhlobo lwezimbiwa, ezinje ngelitye lekalika elenziwe yiminerali enye yecalcite; Inokudityaniswa neeminerali ezininzi, ezinje ngegranite, enezimbiwa ezininzi ezifana ne-quartz, i-feldspar kunye ne-mica. Uninzi lwezinto ezakha amatye zizinto ezingaphiliyo. Iingxondorha zingahlulwa zibe ziindidi ezintathu ngokwendalo yazo, kodwa ngenxa yokuba indalo iyaqhubeka, kunzima ukwahlula ngokwenyani zibe zii-lithologies ezintathu ngokokuhlelwa kwethu. Ke ngoko, kuyakubakho amatye otshintsho, anje nge tuff (uthuli lwentaba-mlilo kunye nokuwa kwamatye). Ingachazwa njengelitye lentlenga okanye ilitye elinegneous, kodwa lungohlulwa lube ngamacandelo amathathu aphambili: i-sedimentary rocks account for 66% yomphezulu kwaye zezona ntlobo ziphambili zamatye phezu komhlaba. Iingxondorha ezazenziwe ngaphambi kokuba zibe yi-detritus emva kokuba zigqityiwe, okanye intsalela yezinto eziphilayo, njl.njl., Ezibangelwa kukhukuliseko, intlenga kunye nokuqina. Ezi ntlobo zamatye zonke zihanjisiwe. Idipozithi yokuqala kwinxalenye esezantsi. Ubudala budala. Ukuphakama kwenqanaba, kokutsha ubudala. Oku kubizwa ngokuba ngumthetho owongamileyo. Xa kufakwa amatye, iintsalela ezihlala zinezinto eziphilayo zihlala zigcinwa ixesha elide kwaye zibe ziifosili emva kokungcwatywa; kumatye angenanto, ubukhulu becala akukho fosili.