Resolving Milankovitchian controversies: The Triassic Latemar Limestone and the Eocene Green River Formation

摘要: Although orbital forcing is commonly proposed as the driver of ancient sedimentary rhythms, lack adequate independent time control (radio isotopic data) to calibrate these cycles has stood a major challenge evaluation hypothesis. Here I apply new statistical approach evaluate cyclicity in two historically important rhythmic units for which been proposed: Triassic Latemar Limestone (Dolomites, Italy) and Eocene Green River Formation (Wyoming, USA). A advance method its explicit null hypothesis no signal. The can be rejected with high degree confi dence (probability <0.30%) <0.07%). analyses also resolve controversies about specifi c calibrations at each site. Both data series reveal expected precession, obliquity, eccentricity components, yield astrochronologies that are consistent radio based scales.