Dating the rocks of the grand canyon

16-Nov-2019 18:43 by 6 Comments

Dating the rocks of the grand canyon

Deep below the rim, the crystalline basement rocks tower above the turbulent Colorado River.

It is generally held by the scientific community that the Grand Canyon formed by the slow erosion of the Colorado River over millions of years. Steve Austin, however, has proposed an entirely different theory on the age and formation of the canyon and wrote a book explaining his theories titled Grand Canyon: Monument to Catastrophe. Austin believes that the canyon was formed extremely rapidly during the period immediately following the global flood of Noah in the biblical book of Genesis. Austin proposed that the canyon is thousands, not millions of years old.

When asked to imagine the biggest, deepest, longest canyon one can imagine, an image of the Grand Canyon will often pop into a person's mind.

The Grand Canyon is a site of almost unfathomable grandeur, which inspires awe in anyone who sees it.

Metamorphic rocks are not always easy to date using radio-isotopes.

Results obtained usually signify the "date" of the metamorphism, but they may also yield the "age" of the original volcanic (or sedimentary) rock.

The resulting rock strata may harbor fossils from a particular habitat area or ecosystem, but do not represent a particular age or era.

Why else do we find marine fossils on the tops of all the major mountain ranges?

That concept began with eighteenth-century French naturalist Georges Cuvier, picked up steam with Charles Lyell, and it has been in vogue ever since.

This is despite the fact that it causes more problems for interpreting rock strata than it solves.

Deep inside the Inner Gorge of Grand Canyon, northern Arizona, are the crystalline basement rocks that probably date back even to the Creation Week itself.

Clearly visible in the canyon walls are the light-colored granites, such as the Zoroaster Granite, which are stark against the darker, folded strata of the Vishnu Schist and the other metamorphic rock units of the Granite Gorge Metamorphic Suite (see lowest purple and green shading in diagram).

These were originally basalt lava flows several meters to tens of meters thick.

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