Rarrabewar Nahiyoyi

Motsawa ko Rarrabewar Nahiya wato Continental Drift a turance shine hasashen cewa nahiyoyin duniya suna ƙaura ko motsawa akan lokacin ilimin ƙasa dangane da junansu, don haka ne ake ganin sun “ɓace” a ƙasan tekun. Hasashe cewa nahiyoyi na iya 'ɓarna' Abraham Ortelius ne ya fara gabatar da shi a cikin 1596.Historical perspective [This Dynamic Earth, USGS]". pubs.usgs.gov. Archived from the original on 27 July 2018. Retrieved 12 m3 August 2021. Alfred Wegener ne ya ƙirƙira wannan tunanin da kansa kuma a cikin shekarar 1912, amma mutane da yawa sun ƙi hasashen sa saboda rashin wata hanyar motsawa. Daga baya Arthur Holmes ya ba da shawarar jigilar mayafi don wannan tsarin. Tun daga lokacin ne aka ci gaba da tunanin karkacewar nahiya ta ka'idar farantin tectonics, wanda ke bayanin cewa nahiyoyin suna motsawa ta hau kan faranti na lithosphere na duniya.Oreskes 2002, p. 324.

 Tarihi 
A shekara ta 1889, Alfred Russel Wallace ya ce, "A da wani babban imani ne, har ma a tsakanin masana ilimin ƙasa, cewa manyan fasalulluka na ƙasa, ba ƙasa da ƙananan ba, sun kasance ƙarƙashin maye gurbi, kuma a lokacin da aka sani lokacin ilimin ƙasa nahiyoyin da manyan tekuna suna da, sau da yawa, sun canza wurare da juna.Romm, James (3 February 1994), "A New Forerunner for Continental Drift", Nature, 367 (6462): 407–408, Bibcode:1994Natur.367..407R, doi:10.1038/367407a0, S2CID 4281585. ” Ya nakalto Charles Lyell yana cewa, "Saboda haka, Nahiyoyi, kodayake na dindindin ne ga duk yanayin ilimin ƙasa, suna canza matsayin su gaba ɗaya a cikin shekaru." kuma yayi iƙirarin cewa farkon wanda ya jefa shakku akan wannan shi ne James Dwight Dana a 1849.a b Schmeling, Harro (2004). "Geodynamik" (PDF) (in German). University of Frankfurt.

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