isostasy describes the movement of the continents.
isostasy describes the movement of the continents.
which phrase describes the movement of the continents?
isostasy
in line with other previous and contemporaneous proposals, in 1912 the meteorologist alfred wegener amply described what he called continental drift, expanded in his 1915 book "the origin of continents and oceans" and the scientific debate started that would end up fifty years later in the theory of plate tectonics. starting from the idea (also expressed by his forerunners) that the present continents once formed a single land mass (which was called pangea later on) that drifted apart, thus releasing the continents from the earth's mantle and likening them to "icebergs" of low density granite floating on a sea of denser basalt. supporting evidence for the idea came from the dove-tailing outlines of south america's east coast and africa's west coast, and from the matching of the rock formations along these edges. confirmation of their previous contiguous nature also came from the fossil plants "glossopteris" and "gangamopteris", and the therapsid or mammal-like reptile "lystrosaurus", all widely distributed over south america, africa, antarctica, india, and australia. the evidence for such an erstwhile joining of these continents was patent to field geologists working in the southern hemisphere. the south african alex du toit put together a mass of such information in his 1937 publication "our wandering continents", and went further than wegener in recognising the strong links between the gondwana fragments.
plate tectonics
the second phrase describes the principle of prophecy in shia islam.









































the third phrase describes the musta'li theological position of the role of ali.









































section::::further reading.









































bullet::::- "the dawoodi bohras: an anthropological perspective", by shibani roy. published by b. r. publishing, 1984.









































bullet::::- "mullahs on the mainframe: islam and modernity among the daudi bohras", by jonah blank. university of chicago press, 2001. .excerpts









































bullet::::- "a short history of the ismailis", by farhad daftary









































bullet::::- "the ismaili, their history and doctrine", by farhad daftary









































bullet::::- "medieval islamic civilisation", by joseph w. meri, jere l. bacharach
musta'li