A scientist recently proposed a new idea: the Earth Plate movement began no later than 3 5 billion years ago  He reasoned that plate tectonics must transform the natural dark mafic rocks into light-colored felsic rocks  And by 3
Samples of sediments from around the world dating back 3.5 billion years contain less than half the grains of felsic rock.
5 billion years ago, the earth already had light-colored felsic rocks