adiometric
dating methods provide a reliable means of determining the ages
of critical points in geologic and planetary history, including
the age of the Earth, the Moon, and meteorites. That the age of
the Earth is billions of years is virtually beyond question
because it is supported by a wide variety of independently
determined scientific evidence which indicates that the Earth is
4.5 to 4.6 billion years old. Scientists are continually refining
this age, but it is highly unlikely that it will change in the
future by more than a few percent. In the past, the age of the
Earth was the subject of much dispute, but the past few decades
have seen the development of new techniques not previously
available. There is virtually no dispute among knowledgeable
scientists about the antiquity of the Earth and her sister
planets.
Radiometric
dating has independently confirmed and quantified the geologic
time scale (Figure 1), which originally was constructed on the
basis of stratigraphic and faunal succession, before the
development of modern isotopic dating techniques. Although
radiometric dating has allowed scientists to assign ages and to
establish the length of the various eras, periods, and epochs,
the relative order of these geologic time units has remained
unchanged. This is powerful proof that both the dating techniques
and the paleontologic and stratigraphic principles on which the
time scale was originally based are sound.
There is also
no doubt that the rocks now exposed on the surface of the Earth
or accessible to scientists by drilling were deposited and
emplaced over the geologic epochs, starting in the earliest
Precambrian more than 3.8 billion years ago. There are more than
100,000 radiometric ages in the scientific literature that date
rock formations and geologic events ranging in age from Holocene
to earliest Precambrian. These data and all the accumulated
knowledge from the science of geology show conclusively that the
Earth we now see is the result of natural processes operating
over vast periods and not the product of one or two worldwide
catastrophic events.
The geologic
corollaries of “scientific” creationism —
namely, that the Earth is no more than 10,000 years old and that
the sedimentary rocks of the geologic column were deposited
within about one year during a worldwide flood about 7000 years
ago — are demonstrably wrong. There is absolutely no
scientific evidence to support these tenets and no scientific
grounds for seriously considering “scientific”
creationism, as described by Morris (92,
95), Kofahl and Segraves (77),
Gish and others (54), and Morris and Parker (97)
as a valid scientific theory. Indeed, most of the
“research”
presented in
these publications consists of quoting each other’s
mistakes.
Moreover,
creationists’ criticisms of geologic principles in general
and of radiometric dating in particular are invalid. Examined
objectively, these criticisms
invariably turn out to be based on obsolete or nonexistent data,
misrepresentations of the scientific evidence, and incomplete,
erroneous, or superficial understanding of the
methods.
Creationist
authors claim that there is scientific evidence for a very young
Earth, but their reasoning is invariably flawed by false initial
assumptions and a total disregard for the scientific evidence
concerning the history of the Earth, its geology, its physics,
and its chemistry. Their calculations are meaningless and cannot
be taken seriously.
“Scientific”
creationism does not provide any rational basis for meaningful
scientific investigations of the Earth, the Solar System, or the
universe. To accept or even take seriously the tenets of
“scientific”
creationism
requires total abandonment of the results of two centuries of
scientific investigations and of the principles of objectivity,
rationality, and open-minded inquiry that are fundamental to
science.
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