What radiometric dating technique is used to date volcanic rock free old age dating sites

Yet the discordance patterns are consistent with past accelerated radioisotope decay, which would also render these "clocks" useless.Thus there is no reliable evidence to dispute that these metamorphosed basalt lava flows deep in Grand Canyon date back to the Creation Week only thousands of years ago.Both laboratories use standard, best-practice procedures on state-of-the-art equipment.The model K-Ar ages for each of the samples ranged from 405.1±10 Ma to 2574.2±73 Ma.It is also claimed that the original basalt lavas were erupted between 17 Ma, based on U-Pb dating of "original" zircon grains in metamorphosed felsic (granitic) volcanic layers within the Brahma and Rama Schists.

None of the obtained isochron "ages" corresponds to the "date" for any recognized event, neither the original lava eruptions nor the subsequent metamorphism.

Metamorphic rocks are not always easy to date using radio-isotopes.

Results obtained usually signify the "date" of the metamorphism, but they may also yield the "age" of the original volcanic (or sedimentary) rock.

U-Pb radioisotope dating is now the absolute dating method of first choice among geochronologists, especially using the mineral zircon.

A variety of analytical instruments have also now been developed using different micro-sampling techniques coupled with mass spectrometers, thus enabling wide usage of U-Pb radioisotope dating.

Search for what radiometric dating technique is used to date volcanic rock:

what radiometric dating technique is used to date volcanic rock-9

Most people believe that when the different radioisotope dating methods are used on the same rock unit they all yield the same age.

Leave a Reply

Your email address will not be published. Required fields are marked *

One thought on “what radiometric dating technique is used to date volcanic rock”

  1. In that same vein, other sensitive documents, like that utility bill or pay stub that has been awaiting filing for the last three months but has instead sat on a bookshelf or desk or end table instead, put that stuff away.