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 – where does the marl fall on this diagram?
We just received the second date from Beta Analytic for the Cedar Creek Mastodon site. This was sampled by Kelsey and Haley and included seeds and a bit of carbon from the lower portion of the peat – this is the Second_date. The First_date I handed out in class.
We have a quiz Wednesday on the principles of tree rings and the significance of the C14 ages – be sure to go over the preparation questions.
