Results 31 to 40 of about 506 (176)
Rivista Italiana di Paleontologia e Stratigrafia, 2016 Toarcian sections studied mainly in Europe have revealed the incidence of Milankovitch forcing with a well-developed, highly stable, 405 ky component of eccentricity, a short-term eccentricity of ~100 kyr, the cycle of obliquity ~36 kyr, and the ...
FRANCISCO J. RODRÍGUEZ-TOVAR +3 more
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Milankovitch-driven cycles in the Precambrian of China: The Wumishan Formation
Journal of Palaeogeography, 2013 Carbonate strata of the Mesoproterozoic Wumishan Formation in the Jixian area near Tianjin are ~3300 m thick and were deposited over some 100 million years (from ~1310±20 Ma to ~1207±10 Ma).
Mei Mingxiang, Maurice E. Tucker
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Pacing of Paleozoic macroevolutionary rates by Milankovitch grand cycles [PDF]
Proceedings of the National Academy of Sciences, 2018 SignificanceThere has been long-standing debate about the relative roles of intrinsic biotic interactions vs. extrinsic environmental factors as drivers of biodiversity change. Here, we show that, relatively early in the history of complex life, Milankovitch “grand cycles” associated with astronomical rhythms explain between 9 and 16% of variation in ...
James S. Crampton +5 more
openaire +4 more sources
The Astronomical Pulse of Global Extinction Events
The Scientific World Journal, 2006 The linkage between astronomical cycles and the periodicity of mass extinctions is reviewed and discussed. In particular, the apparent 26 million year cycle of global extinctions may be related to the motion of the solar system around the galaxy ...
David F.V. Lewis, Jean-Lou C.M. Dorne
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On Time Scales of Intrinsic Oscillations in the Climate System
Entropy, 2021 Proxy temperature data records featuring local time series, regional averages from areas all around the globe, as well as global averages, are analyzed using the Slow Feature Analysis (SFA) method.
Anastasios A. Tsonis +5 more
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Frontiers in Earth Science, 2019 A rock magnetic cyclostratigraphy study was conducted on the Carboniferous Mauch Chunk Formation red beds at Pottsville, Pennsylvania to determine if Milankovitch climate forcing could be detected in these terrestrial, fluvial deposits with hematite as ...
Kenneth P. Kodama
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Eccentricity Controls the Magnitude and Periodicity of Pleistocene Glacial Cycles
Paleoceanography and Paleoclimatology, Volume 41, Issue 3, March 2026.Abstract During the Mid‐Pleistocene Transition (∼1,250–750 ka) glacial cycle amplitude and duration increased, from smaller, ∼40 ka‐period middle Pleistocene ice sheets to larger, ∼100 ka‐period late Pleistocene ice sheets. This transition in glacial period and size has been attributed to some combination of long‐term, monotonic, carbon and climate ...
Samuel T. Kodama, Terrence Blackburn
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Soil modulation of Quaternary glacial-interglacial cycles
GeodermaSinusoidal Milankovitch orbital variations do not match the sawtooth pattern of descent into glaciation followed by abrupt termination to greenhouse interglacials seen in records of marine shale, speleothems, and ice cores.
Gregory J. Retallack
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Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.Abstract The climatic optimum of Marine Isotope Stage (MIS) 11, MIS 11c, was a remarkably long warmer‐than‐present climate interval with prolonged elevated atmospheric CO2 levels. While the Pacific Southern Ocean has a strong leverage on atmospheric CO2 through oceanic CO2 release, past changes in carbon cycle dynamics in this region and their ...
L. Jebasinski +8 more
wiley +1 more source
Frontiers in Earth Science, 2020 This research analyzes the cyclostratigraphy of the lacustrine Dabeigou Formation (DBG) of early Jehol Biota age (∼130–135 Ma) in the Luanping Basin, northern China.
Wei Liu +8 more
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