Young Earth Creationism is a term I've never heard in the Catholic Church. Wikipedia says "Young Earth creationism (YEC) is the religious belief that the Universe, Earth and all life on Earth were created by direct acts of God during a relatively short period, between 5,700 and 10,000 years ago." And many of these people will give you an exact date of creation, not just a rough guess of "between 5,700 and 10,000 years ago."

I suppose some people will classify me as an Old Earth Creationist, but I don't think so.

I believe in Evolution, or Evolutionism, or whatever you want to call it. I don't call myself an expert, so my level of certainty is not absolute. Nonetheless, just as the jury weighs the evidence and believes the defendant to be guilty or not guilty, I have weighed the evidence and chosen to believe in evolution (mixed with God stuff). That won't satisfy any of our born-again absolutists, on either side. But oh, well....

-Joe-