Tag Archives: hardgrounds

Middle Cambrian stromatolites high in the Canadian Rockies

Mark Wilson August 9, 2009 11:23 pm

FIELD, BRITISH COLUMBIA, CANADA–Our study group was fortunate to meet Whitey Hagadorn (Amherst College and Denver Museum of Natural History) and Sally Walker (University of Georgia) for a hike to an exposure of stromatolites in the Pika Formation (Middle Cambrian) … Continue reading →

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Thoughts on Future Wooster Geology Research in Russia

Mark Wilson June 17, 2009 1:56 pm

I was very impressed by the Ordovician rocks I saw in the Leningrad Region on this past trip.  I had seen parts of the Ordovician System in Estonia nearby, but not to this extent nor this particular facies.  My model … Continue reading →

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Goal!

Mark Wilson June 8, 2009 2:23 am

BABINO, LENINGRAD REGION, RUSSIA–Today we visited an active quarry, which is a different experience from the riverbank exposures and abandoned quarries we have been frequenting.  Quarry mud has a special character — a kind of purified mud, the kind of … Continue reading →

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Ordovician Hardgrounds

Mark Wilson June 7, 2009 2:06 am

SYAS RIVER, LENINGRAD REGION, RUSSIA–The main geological attractions for me on this expedition are the abundant carbonate hardgrounds in the Lower and Middle Ordovician in this part of the world.  A carbonate hardground is a cemented seafloor.  What were soft … Continue reading →

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