Interesting creationist commentary on the San Juan River here (you will have to Control F “San Juan” if you want to find it fast):
http://www.creationscience.com/onlinebook/GrandCanyon5.html#wp16843079
Did you know about this?...esp. the part about the bottleneck downstream of the Goosenecks region???
What a suprise, it completely ignores the documented uplift of the Colorado Plateau over the last few million years.
Dang, the 200 million year claims completely ignore the problems with dating methods, and apparently anyhtign that doesn’t assume millions of years is to be labelled ‘psuedoscience’ (ah, the pesky facts about science)
Superposition
Not a valid dating method- too manyvariables must be taken into account- too many suppositions
http://www.fbinstitute.com/powell/evolutionexposed.htm
Stratigraphy
http://geoinfo.nmt.edu/publications/bulletins/135/home.html
Dendrochronology
Up to 10000 years tops
Radiometric Dating Methods
problems with radiometic http://www.specialtyinterests.net/carbon14.html
Obsidian Hydration Dating
Many obsidians are crowded with microlites and crystallines (gobulites and trichites), and these form fission-track-like etch pits following etching with hydrofluoric acid. The etch pits of the microlites and crystallines are difficult to separate from real fission tracks formed from the spontaneous decay of 238U, and accordingly, calculated ages based on counts including the microlite and crystalline etch pits are not reliable.”
http://trueorigin.org/dating.asp
http://www.scientifictheology.com/STH/Pent3.html
Paleomagnetic/Archaeomagnetic
Very little info on this method
http://ourworld.compuserve.com/homepages/dp5/tecto.htm
Luminescence Dating Methods
http://karst.planetresources.net/Kimberley_Culture.htm
Amino Acid Racemization
http://www.creation-science-prophecy.com/amino/
Fission-track Dating
http://www.ao.jpn.org/kuroshio/86criticism.html
Ice Cores
Varves
At best- the two methods above are only accurate to about 11,000 years due to numerous conditions and environmental uncertainties
Pollens
Corals
Highly unreliable- you’d need constant temps to maintaIN reliable growth pattersn http://www.answersingenesis.org/creation/v14/i1/coral_reef.asp
Cation Ratio
Fluorine Dating
http://www.present-truth.org/Creation/creation-not-evolution-13.htm
Patination
Known times only throuhg analysis of the patina
Oxidizable Carbon Ratio
Electron Spin Resonance
Cosmic-ray Exposure Dating
Closely related to the buggiest dating methods of Carbon dating
why it’s wrong:
http://www.cs.unc.edu/~plaisted/ce/dating.html#Carbon
http://www.creationontheweb.com/content/view/3059
RaDio helio dating disproves:
http://www.creationontheweb.com/content/view/369
http://www.cs.unc.edu/~plaisted/ce/
http://www.rae.org/