Citat:
În prealabil postat de catalin2
Am vrut chiar eu sa-l scriu tradus cu google, dar era prea lung mesajul in care il puneam. Se observa ca se tine cont de miscarea placilor tectonice si disparitia unui procent din sedimente in acest fel. Sursa este seculara, nu creationista.
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La acel articol raspunsul meu este asta:
Not enough mud on the sea floor (maximum age: 12 million years).
Humphreys mentions reports that 25 billion tons of sediment erode from the continents each year, and that plate tectonic subduction removes only 1 billion tons of sediment from the ocean floor per year. He then claims that it would only take 12 million years at most for the excess 24 billion tons per year to produce the current amount of sediment - at an average depth of about 400 meters. But once again, Humphreys' model is far too simple.
The depth of sediments on the ocean bottoms is not a uniform 400 meters, but varies considerably. And much sediment never gets to the oceanic floor, but is trapped instead on continental slopes and shelves, or in huge river deltas. Over the years, some of these continental slopes can accumulate several kilometers of sediment, while others can even become part of mountain ranges in continental plate-to-plate collisions. Neither erosion nor subduction are expected to be constant processes over millions of years, and they are simply not very good clocks. Humphreys' strawman ocean floor does not prove the Earth is young.
Daca tin bine minte, chiar delta Dunarii s-a format in acest mod: din sedimente aduse de apa care au devenit, incet, parte din uscat.