This glacial erratic made is way down to Wayne County during the course of the 20 glacial cycle over the past 2 million years. Before that is was buried and exhumed in the earth's crust to a depth of over 10 km at least twice. A … [Read more]
Forcing Factors
The diagram above came up in the Emily and Sarah's presentation. This is for recent climate change relevant to the warming world of today. What might this look like for glacial times, for longer timecales? for millennial-scale variations? … [Read more]
We Dug a Ditch
One of the big questions that remains with the Mastodon site is how does the marl in our cores link to the excavation. Clint Walker had a good suggestion to dig a ditch 2 meters down through the bog. Now we have a better idea. We will examine the … [Read more]
RealClimate
A blog that you should really subscribe to and check in on occasionally is RealClimate. This week's entry is concerned with - How do Trees Change the Climate? This question will become more important to us as we continue the Ohio tree-ring work - how … [Read more]
Back to Cedar Creek
We spent a beautiful Fall morning at the Cedar Creek Mastodon site with Dr. Wilson, Dr. Brush (U. Ashland), Dr. Kardulias and other experts examining the sediments and mastodon remains. See Dr. Wilson's post for some excellent photos and suggestions … [Read more]
The Second Date
Above is the reconstructed temperatures from the Greenland Ice Core. Now that we have radiocarbon ages from our sediment core we can put it into the larger context of the Northern Hemisphere temperature history. The x-axis is in calibrated yrBP - … [Read more]
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