Radiodating techniques assess the age of rocks and fossils perfectly.
The Facts Are .....
Eleven distinct types of microbes have been identified in rock samples from Marble Bar (W.A.) dated at 3.5 billion years old, in evolutionary terms. This date puts the rock at forming only 400 million years after the earth cooled enough for life to exist - according to evolutionary theory. The assessed age of these organisms is in total conflict with the current ages assigned by evolutionists to the origin of life on Earth. 
In the 1960's, scientists took ten samples of lava from both vegetated and unvegetated sites on Mount Rangitoto (Auckland), and had their ages calculated using the Potassium-Argon method. The ages of the ten samples ranged from 146,000-500,000 years. Not only did the tests produce a discrepancy in age of the rocks, but the rock formed when the volcano erupted around 200 years ago, according to Maori legend. 
In 1968 scientists dated the rocks of a Hawaiian volcano called Hualalai, using Potassium/Argon radiometric techniques. They knew that the volcano had erupted in 1800 and that the rocks were around 170 years old, but the ages they determined ranged from 160 million to 3 billion. This method of dating rocks obviously produces erroneous ages, and should not be used to factually age the earth and its geology. 
Different radioactive dating methods used on volcanic rock samples from Reunion Island (Indian Ocean) gave conflicting results that varied from 100,000 to 4.4 billion years. 
Radiocarbon and Uranium-Thorium dates calculated by the Lamont-Doherty Geological Laboratory (New York) for samples of Caribbean coral have been found to differ by 3,500 years. These tests show how inaccurate, and artificial, age assessments from radio-dating are. 
Lava flows on the Uinkaret Plateau north of the Grand Canyon are a most recent formation, being only a few thousand years old. Radiodating of this rock using Rubidium-Strontium and Lead-Lead methods has produced ages from 1.5 - 2.6 billion years. Clearly, the age assessment techniques are vastly inaccurate if the young lava flow is assessed as being older that the sedimentary rock on which it lies. 
Radiodating of minerals collected from a drill core in Northern Australia, using the Uranium-Thorium-Lead method, has produced conflicting ages. One sample was dated as 862 million years old, while three other samples were each assessed as being 0 (zero) million years old. This adds to the confirmation that radiodating techniques are highly variable, and therefore cannot be used to accurately date objects. 
Radiometric dating of fossil ‘skull 1470’ show that the various methods do not give accurate measurements of ages. The first tests gave an age of 221 million years. The second, 2.4 million years.
Subsequent tests gave ages which ranged from 290,000 to 19.5 million years. Palaeomagnetic determinations gave an age of 3 million years. All these readings give a 762 fold error in the age calculations. Given that only errors less than 10% (0.1 fold) are acceptable in scientific calculations, these readings show that radiometric assessment should never ever be used. 
- Time (Australia), May 10, 1993 p:15; Science, April 30, 1993 p:640-646
- Geochimica et Cosmochimica Acta, Vol. 33, 1969 p:1485-1520
- Journal of Geophysical Research, Vol. 73, No. 14, 1968 p:4601-4607
- Geochimica et Cosmochimica Acta, Vol. 35, 1971 p:261-288 & Vol. 36, 1972 p:1167
- Science News, June 9, 1990 p:356
- Creation Ex Nihilo, Vol. 11, No. 3, 1989 p:37
- Search, Vol. 3, 1972 p:382-385; Mineralium Deposita, Vol. 11, 1976 p:133-154.
- John Reader, "Missing Links", BCA/Collins: London, 1981 p:206-209