Please keep the following in mind as you begin your search into this topic.
Just as evolutionary theories continually grow and change, theories for
creationism do as well. Both creationism and evolutionism are theories
that interpret the observable facts. As new facts come to light,
the interpretation of those facts will grow and change. Old theories
are pushed aside as new ones come into being.
The primary authority for Creationism is the Word of God, the Bible. All
theories of science are fallible, and new data will often overturn
previously held theories. Evolutionists continually revise their theories
because of new data, so it should not be surprising or distressing that some
creationist theories need to be revised as well.
Just because a creationist has decided to make his or her foundation the
Word of God, doesn't mean that every creationist is in agreement on the
interpretation of current evidence. The Bible is not exhaustive in its
discussions on matters of science, however, where it does discuss such
topics, it has been found to be accurate.