<p> An age of approximately 55K years was found for the St.
Clair basin clays using helium isotope dating. This is
about 5 times larger than the date obtained from the
more accepted carbon-14 method and from other
geological evidence. Diffusion of helium from crustal
rocks against a flow of approximately 0.03-0.05 cm a· '
is the primary reason for this discrepancy. Mixing of
the groundwater with a meteoric component has an
opposite effect tending to lower the helium age. </p> / Thesis / Bachelor of Science (BSc)
| Identifer | oai:union.ndltd.org:mcmaster.ca/oai:macsphere.mcmaster.ca:11375/19225 |
| Date | 04 1900 |
| Creators | Hatch, David |
| Contributors | Clarke, W. B., Geology |
| Source Sets | McMaster University |
| Language | English |
| Detected Language | English |
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