Results 41 to 50 of about 405 (163)
, 2022 The numerous biotic, climatic, and tectonic events of the Devonian cannot be correlated and investigated without a well-calibrated time scale. Here, we updated the calibration of the Devonian time scale using a Bayesian age-depth model that incorporates ...
Schmitz, Mark D. +4 more
core +1 more source
Integrated stratigraphy and astrochronology of the Messinian GSSP at Oued Akrech (Atlantic Morocco) [PDF]
Earth and Planetary Science Letters, 2000 A much improved high-resolution integrated stratigraphy (calcareous plankton biostratigraphy, magnetostratigraphy, cyclostratigraphy) is presented for the classic section of Oued Akrech (Atlantic Morocco) straddling the Tortonian^Messinian boundary.
Hilgen, F.J. +6 more
openaire +3 more sources
Reducing Disparity in Radio‐Isotopic and Astrochronology‐Based Time Scales of the Late Eocene and Oligocene [PDF]
Paleoceanography, 2017 AbstractA significant discrepancy of up to 0.6 Myr exists between radio‐isotopically calibrated and astronomically tuned time scales of the late Eocene‐Oligocene. We explore the possible causes of this discrepancy through the acquisition of “high‐precision” 206Pb/238U dating of zircons from 11 volcanic ash beds from the Umbria‐Marche sedimentary ...
Diana Sahy +3 more
openaire +4 more sources
, 2020 The geologic time scale for the Cenozoic Era has been notably improved over the last decades by virtue of integrated stratigraphy, combining high-resolution astrochronologies, biostratigraphy and magnetostratigraphy with high-precision radioisotopic ...
Batenburg, Sietske J +13 more
core +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.Abstract Marine carbonate carbon isotopes (δ13C), over orbital to multi‐million‐year timescales, provide critical insight into the carbon cycle connecting Earth's atmosphere, lithosphere, hydrosphere and biosphere. However, the influence of astronomical forcing on deep time carbon cycle dynamics remains poorly constrained.
Deyan Zhang +4 more
wiley +1 more source
Solar System chaos and the Paleocene–Eocene boundary age constrained by geology and astronomy [PDF]
, 2019 Astronomical calculations reveal the Solar System’s dynamical evolution, including its chaoticity, and represent the backbone of cyclostratigraphy and astrochronology.
Lourens, Lucas J., Zeebe, Richard E.
core +2 more sources
The Depositional Record, Volume 11, Issue 5, Page 1200-1258, November 2025.Shallow‐marine mudstone of the Cretaceous Kaskapau Formation in the British Columbia foredeep preserves a 185 m thick record of OAE2. The organic carbon‐isotope and osmium‐isotope excursions can be correlated in detail with other Cenomanian–Turonian boundary sections around the world.
A. Guy Plint +12 more
wiley +1 more source
GeosciencesThe Chang 8 Member in the Longdong area of the Ordos Basin hosts significant petroleum resources, demonstrating substantial potential for tight oil exploration and development.
Wei Wang +7 more
doaj +1 more source
Implications of Northwest Pacific Ocean Eolian Records for Northern Hemisphere Wind System Evolution
Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.Abstract Northwest Pacific Ocean sedimentary eolian records preserve abundant information about the temporal evolution of Northern Hemisphere atmospheric circulation. The large spatial scale of these wind systems means that they play key roles in driving dust transportation from inland areas to the open ocean. However, the altitudinal range of dominant
Qiang Zhang +14 more
wiley +1 more source
Paleoceanography and Paleoclimatology, Volume 40, Issue 8, August 2025.Abstract Variations in Earth's orbit and axial tilt induce climatic changes which are recorded in sedimentary deposits. The frequencies of these cyclical variations are integer combinations of the main secular frequencies of the solar system. Analyzing these cycles in sedimentary records can help establish an astronomical time scale for the geological ...
N. Hoang +7 more
wiley +1 more source