Tarihin ilimin ƙasa da duwatsu

Tarihin ilimin ƙasa da duwatsu ya biyo bayan manyan abubuwan da suka faru a duniyar da ta gabata dangane da sikelin lokacin ƙasa, tsarin ma'aunin lokaci bisa la'akari da nazarin dutsen duniyoyin ( stratigraphy ).International Stratigraphic Chart". International Commission on Stratigraphy. Archived from the original on 30 May 2014. Duniya ta samu kimanin shekaru biliyan 4.54 da suka gabata ta hanyar tarawa daga hasken rana nebula, ƙurar ƙura da iskar gas da ta rage daga samuwar Rana, wanda kuma ya halicci sauran Tsarin Solar.Jump up to: a b International Commission on Stratigraphy. "Chronostratigraphic Units". International Stratigraphic Guide. Archived from the original on 9 December 2009. Retrieved 14 December 2009.

 Precambrian 
Precambrian ya ƙunshi kusan 90% na lokacin ilimin ƙasa. Yana ƙaruwa daga shekaru biliyan 4.6 da suka gabata zuwa farkon zamanin Cambrian (kusan 541 Ma ). Ya ƙunshi eons uku, Hadean, Archean, da Proterozoic."Age of the Earth". U.S. Geological Survey. 1997. Archived from the original on 23 December 2005. Retrieved 10 January 2006.

Manazarta