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Astronomical calibration of the Danian time scale
Geological Society, London, Special Publications, 2001Abstract Ocean Drilling Program Sites 1001A (Caribbean Sea) and 1050C (western North Atlantic) display obliquity and precession cycles throughout polarity zone C27 of the late Danian stage (earliest Cenozoic time). Sliding-window spectra analysis and direct cycle counting on downhole logs and high-resolution Fe variations at both
Ursula Röhl +3 more
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Cyclostratigraphy and the Astronomical Time Scale
Stratigraphy, 2007An important innovation in the International Geologic Time Scale 2004 is the use of astronomically forced stratigraphy, or cyclostratigraphy, to define geologic time over 0 to 23.03 Ma, much of it at an unprecedented resolution of 0.02 myr. In addition, ‘floating’ astronomical time scales with 0.10 to 0.40 myr resolution are defined for entire epochs ...
Linda A. Hinnov, James G. Ogg
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Astronomical frequencies for climate research at the decadal to century time scale
Climate Dynamics, 1992Short-term variations of the elements representing the Earth's motion around the Sun and its rotation have been analyzed over the last 6000 years using 1-year steps. Their low-frequency part is compared first to the values obtained from a secular theory of the planetary long-term motion showing that they can be considered reliable enough to represent ...
MF Loutre +3 more
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2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)., 2004
We analyze how time-scale and time-frequency methods can be suited to study unequally spaced astronomical time-series, in terms of recovering precise spectral contents of a pulsating star. In many situations in astronomy, nonuniform sampling proves to be the natural way in which the signal is available for investigation and the spectral information of ...
Sylvie Roques, Carole Thiebaut
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We analyze how time-scale and time-frequency methods can be suited to study unequally spaced astronomical time-series, in terms of recovering precise spectral contents of a pulsating star. In many situations in astronomy, nonuniform sampling proves to be the natural way in which the signal is available for investigation and the spectral information of ...
Sylvie Roques, Carole Thiebaut
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Paleoceanography, 1993
An astronomically calibrated time scale was recently established (Hilgen, 1991a, b) for the Pliocene and earliest Pleistocene, based on the correlation of dominantly precession‐controlled sedimentary cycles (sapropels and CaCO3 cycles) in Mediterranean deep‐sea sections to astronomical solution Ber90 (Berger and Loutre, 1991).
F. J. Hilgen +3 more
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An astronomically calibrated time scale was recently established (Hilgen, 1991a, b) for the Pliocene and earliest Pleistocene, based on the correlation of dominantly precession‐controlled sedimentary cycles (sapropels and CaCO3 cycles) in Mediterranean deep‐sea sections to astronomical solution Ber90 (Berger and Loutre, 1991).
F. J. Hilgen +3 more
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Astronomical Systems of Units, Co-Ordinates and Time-Scales
1973The systems of units, co-ordinates and time-scales that are currently in use in dynamical astronomy are reviewed, and attention is drawn to the needs for simplification and clarification, and for explicit statements of the relationships between astronomical and SI units.
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Earth and Planetary Science Letters, 2004
Abstract We present an integrated stratigraphic study of cyclically bedded distal alluvial fan to lacustrine deposits in the late Miocene continental sections of Cascante and Canizar (Teruel basin, NE Spain). The cyclostratigraphic analysis reveals that different scales of sedimentary cyclicity are present with a thickness ratio of about 1:2:5 ...
Abdul Aziz, H. +3 more
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Abstract We present an integrated stratigraphic study of cyclically bedded distal alluvial fan to lacustrine deposits in the late Miocene continental sections of Cascante and Canizar (Teruel basin, NE Spain). The cyclostratigraphic analysis reveals that different scales of sedimentary cyclicity are present with a thickness ratio of about 1:2:5 ...
Abdul Aziz, H. +3 more
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2014
The astronomical time scale (ATS) for geological records is nearly complete for Cenozoic strata, and attempts have been made to extend the scale to Mesozoic and older ages. However, construction of the Mesozoic ATS is hampered by the chaotic behaviour of solar planets and the lack of a continuous pelagic sequence for the early Mesozoic due to the ...
Masayuki Ikeda +2 more
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The astronomical time scale (ATS) for geological records is nearly complete for Cenozoic strata, and attempts have been made to extend the scale to Mesozoic and older ages. However, construction of the Mesozoic ATS is hampered by the chaotic behaviour of solar planets and the lack of a continuous pelagic sequence for the early Mesozoic due to the ...
Masayuki Ikeda +2 more
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TRIASSIC TIME SCALE FROM ASTRONOMICAL-TUNED MAGNETOSTRATIGRAPHY
Geological Society of America Abstracts with Programs, 2017Mingsong Li +5 more
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