Wolfendale - Mass extinctions over the last 500 myr: an astronomical cause? (ed.) - Zum Ober-Bathonium (Mittlerer Jura) im Raum Hildesheim, Nordwestdeutschland.
A simple model that assumes a well-mixed reservoir in surface ocean waters and constant sediment accumulation was used to interpret the 239,240Pu profiles.Chica, Ivan - Stratigraphical problems of the Miocene in Europe. wrps., spine just a little worn, contents very good, 4to. Remnants of these vast sheets of ice can still be seen today in the form of numerous lakes that pepper the northern regions of the Midwest.Retreating glaciers left large depressions in the earths crust which filled with melt water, the most magnificent of which are the Great Lakes.