Dating sediment cores carbon dating is accurate

But how do secular scientists narrow this possible age range to actually assign a more precise date (within their worldview) to a layer of seafloor sediment?

A number of arguments strongly favor a catastrophist interpretation of the seafloor sediments.

First, the extreme scarcity of manganese nodules within all but the uppermost seafloor sediments (Glasby 1978) is a strong argument that the bulk of these sediments were deposited much too rapidly for the growth of nodules of any appreciable size (Patrick 2010).

In the ocean, a continual rain of fine sediment collects on the sea floor, forming a thick layer of sediment up to 5.6 miles (9 km) thick.

Most of this sediment is made up of the miniscule shells of microscopic sea life.

At today’s slow sedimentation rates, it can take a thousand years for a few centimeters of sediment to be deposited on the ocean floor (Cronin 2010).

Oceanographers have drilled and extracted cores from these sedimentary layers, which can have combined lengths of many hundreds of meters.

Secular scientists have recognized the circularity in this argument and have attempted to guard against it by using “independent” checks on the orbital tuning method.

However, these checks are not truly independent, as they all assume the old-earth, evolutionary paradigm.

Since particular microbes live only under particular environmental conditions, scientists can use them to track changes in water temperature and chemistry over millions of years.

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