Publication Date:
2023-03-17
Description:
Spectral analyses of high-resolution records from the upper Eocene-lower Oligocene from the Massignano section, GSSP for the Eocene/Oligocene (E/O) boundary, and the nearby Massicore reveal orbitally controlled fluctuations in the percent concentration of calcium carbonate (wt% CaCO3) and magnetic susceptibility. Extraction of orbital components provides a consistent cyclochronology for the two sites that straddles the E/O boundary. Detection of longer-term modulation in the short eccentricity enabled tuning to the astronomical solution and development of a robust astrochronology for the E/O boundary transition in the GSSP section. Correlation with astrochronologically dated records allowed us to identify the local sedimentary response to the global paleoclimatic and palaeoceanographic events that characterize the greenhouse-icehouse transition during the late Eocene-early Oligocene.
Description:
Published
Description:
110958
Description:
4A. Oceanografia e clima
Description:
JCR Journal
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
