"Therefore, these considerations call into question all K-Ar "dating", whether "model ages" or "isochron ages", and all 40Ar/39Ar "dating", as well as "fossil dating" that has been calibrated against K-Ar "dates". Although seemingly insignificant in themselves, the anomalous K-Ar "model ages" for these recent andesite flows at Mt Ngauruhoe, New Zealand, lead to deeper questions. Why is there excess40Ar* in these rocks? From where did it come? Answers to these questions in turn point to significant implications that totally undermine such radioactive "dating" and that are instead compatible with a young Earth."
This is the conclusion of a long paper on the subject of Pottasium-argon dating. It shows how there was excess Argon in some andesite flows. If you want the details, go to this link:
Amino Acid Racemization:
"There is no doubt that proteins in bone and shell and other fossil material undergo hydrolysis and that the amino acids contained in them suffer racemization with increasing age of fossil material. To use rates of racemization as a dating method, however, the entire history of the fossil material would have to be known, including temperature and the entire diagenetic process, especially the chemical environment that contributed to this process, and most especially the pH. Since all of these factors, most of which accelerate racemization rates, cannot be known, it is suggested that the apparent ages obtained by this method are unreliable and, with few exceptions, are much older than the real ages."
This is the conclusion of a article on Amino Acid Racemization. It shows this is not a reliable dating method. Here is a link to the entire article:
A very short explaination of carbon dating's flaws:
I'm not going to post any more links, because I don't want you yelling and screaming at me. Just read some of what I have, and if you want more, I'll get it.