2014 UPDATES of MY AMATEUR IMPACT CRATER/STRUCTURE EXPLORATIONS
by: Charles O’Dale
- Clearwater East, Quebec – REVISED TIME OF IMPACT
The age spectra corrected for the trapped argon component and inverse isochron plots consistently yielded ages around ~460–470 Ma for ECL, reproducing the Ar/ Ar results by Bottomley et al. (1990) and contradicting an earlier Rb–Sr age of 287 ± 26 Ma. The Ar-Ar dates obtained from four different melt samples across the melt sheet favor an Ordovician age for the East Clearwater Lake impact and impact-induced hydrothermal overprint.
- Merewether, Labrador – PROBABLE SINKHOLE
- St. Martin, Manitoba – NEW DOCUMENTED TIME OF IMPACT
40 Ar/39 Ar age of the Lake Saint Martin impact structure (Canada) – Unchaining the Late Triassic terrestrial impact craters
Martin Schmieder, Fred Jourdanb, Eric Tohvera, Edward A. Cloutisc
- PLANET VS CRATER SIZE – BINARY ASTEROID BREAKUP
Touchwood Hills Provincial Park, Saskatchewan – a very large circular structure with Last Mountain Lake to the west and Quill Lakes to the north. These arcuate lakes “may” be resting on the rim of a large impact structure.(RADARSAT-1 Mosaics).
“We, all of us, are what happens when a primordial mixture of hydrogen and helium evolves for so long that it begins to ask where it came from.”