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07-Mar-2018 04:21

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The crystalline rocks of the Inner Gorge are below the horizontal strata of the main canyon walls (after Austin, ref. The problem is that we don’t know whether these assumptions are reasonable (because they are not provable), and it is especially awkward for metamorphic rocks.

Geologists overcome this problem by “interpreting” the result.

The radioisotope methods, long touted as irrefutably dating the earth as countless millions of years old, have repeatedly failed to give reliable and meaningful absolute ages for Grand Canyon rocks.

Rafting through Grand Canyon, northern Arizona, is a most exhilarating and enjoyable experience.

Clearly visible in the walls of the Inner Gorge are spectacular light-coloured rocks, such as the pink granites,1 which stand out starkly against the darker, metamorphic rocks2 (figures 1 and 2).

The latter are former sedimentary and volcanic layers that have been transformed (metamorphosed) by heat and pressure during intense geologic upheavals in the past.

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Note that the error estimates (the ± numbers) are small compared with the age.The results are not even close to each other, although the samples should all have given the same age.Furthermore, the ages calculated for these Grand Canyon rocks using three “isochron” methods also disagreed greatly with each other.However, as the results show, the error estimates say nothing about the accuracy of the “ages” of the rock samples.

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Furthermore, the seven samples from the small amphibolite unit near Clear Creek, which should be even closer in age because they belong to the same metamorphosed basalt lava flow, yielded K-Ar model “ages” ranging from 1,060.4 ± 28 Ma to 2,574.2 ± 73 Ma (figure 6).Even when the error margins are taken into account, the three different dating methods give completely different “ages” that cannot be explained away.



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