However, this sampling technique was known by mainstream geologists to behave in this manner long before Austin published on the topic, and this behavior is often intentionally used by geologists.Austin was aware of this, as his 1988 reference to Faure shows. Unfortunately, it was submitted anonymously and it didn't address the key issues above.But the Cardenas Basalt cannot be younger than the plateau flows, due to the geological relationships discussed in the first section of this document.Austin says that his isochron age is the result of a "" (1992, p. In other words, Austin claims that he has produced a seemingly reliable isochron age which must necessarily be wrong, and therefore the Rb-Sr isochron dating method, which is considered to be among the more reliable of radiometric dating methods, must be considered suspect.The formal sciences are often distinguished from the empirical sciences as the former does not depend on empirical observations.Science is related to research, and is normally organized by a university, a college, or a research institute.Even young-earth creationists would agree with this relative sequencing of events.They would argue for a much shorter absolute timescale than mainstream geologists would accept, but the relative sequence is agreed upon by all parties. Steven Austin, chairman of the Geology Department at the Institute for Creation Research, claimed (1992) that he had derived an isochron for the plateau flows, which indicates an age of about 1.3 billion years.
At the GSA meeting, Austin discussed the inheritance of a mantle age.
An angular unconformity is the result of tilting and eroding of the lower layers before the upper ones are deposited.
These tilted and eroded layers are Precambrian in age (blue in Figure 1, above).
The "type" of rock is not sufficient to establish the samples being cogenetic.
Since the stratigraphic evidence indicates that the flows did not all occur at the same time, the case could only be made by other isotopic analysis such as taking internal isochrons of the individual flows.