Numerical Dating in Stratigraphy, Part 2Gilles S. Odin |
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Albian Aliquot ammonite Analytical uncertainties Apparent age ICC apparent ages obtained Aptian argon basalt base basins Stratigraphical uncertainties beds bentonite biotite biozone boundary calculated calibration Cambrian Campanian Carnian Cenomanian chronometer clay collected correlated Cretaceous Curry and G. S. deposition Discussion Early Earth Planet Eocene European basins Stratigraphical Evernden fauna feldspar foraminiferal formation fossils G. S. Odin Geol GL-O glauconitic minerals glaucony grains granite granodiorite Hauterivian HCI ST hornblende intrusion isochron isotopic K-Ar ages K-Ar/glaucony NW European K-Ar/whole-rock Kreuzer Late Aptian lavas limestone lower Lutetian Maastrichtian magnetic fractionation marls maximum age mean Middle minimum age nl/g STP NW European basins Odin in Berne Oligocene Ordovician outcrop pellets plagioclase Potassium potassium content radiogenic ratio Rb-Sr recalculated retained value rocks sample sand sandstone sanidine sediments selected after washing sequence stage tectonic Thanetian Triassic Turonian upper volcanics whole-rock zircon zone