Johan H. ten Veen, George Postma; Astronomically forced variations in gamma-ray intensity: Late Miocene hemipelagic successions in the eastern Mediterranean basin as a test case. Geology ; 24 (1): 15–18. doi: https://doi.org/10.1130/0091-7613(1996)024<0015:AFVIGR>2.3.CO;2
Download citation file:
Amplitude variations of the gamma-ray record of late Miocene hemipelagic successions on Crete correlate remarkably well with the amplitude variations of a published theoretical insolation curve. Chemical analyses of the sediments show a linear relation between radiation (total counts above 400 keV) and U enrichment due to authigenic formation of U-containing minerals under anaerobic conditions. The studied sections, which are paleomagnetically and biostratigraphically and cyclostratigraphically well constrained and more than 100 km apart, can be correlated on basis of gamma-ray count rates.