Second, Nevins (99) has assumed constant rates for erosion and sedimentation, processes whose rates have, in fact, varied constantly throughout geologic time.
I think you will find on both sides of the argument many rates are asumed and estimted and unprovable if they've taken place in the past.
Let us see how many asumptions we can find below in claim CD220.
Claim CD220:
Source:
Morris, Henry M., 1974. Scientific Creationism, Green Forest, AR: Master Books, pp. 155-156.
Response:
1. The thickness of sediment in the oceans varies, and it is consistent with the age of the ocean floor. The thickness is zero at the mid-Atlantic Ridge, where new ocean crust is forming, and there is about 150 million years' worth of sediment at the continental margins. The average age of the ocean floor is younger than the earth due to subduction at some plate margins and formation of new crust at others.
2. The age of the ocean floor can be determined in various ways -- measured via radiometric dating,
estimated from the measured rate of seafloor spreading as a result of plate tectonics,and estimated from the ocean depth that predicted from the sea floor sinking as it cools. All these measurements are consistent, and all fit with sediment thickness.
Radiometric dating is base on three unprovable assumptions.
Sorry, got go. in any origins science there is a degree of faith involved.
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