Results 71 to 80 of about 3,413,444 (233)

Peritidal carbonate cycles induced by carbonate productivity variations: A conceptual model for an isolated Early Triassic greenhouse platform in South China

Journal of Palaeogeography, 2014
Eustasy has commonly been invoked to explain peritidal carbonate cyclicity, but is difficult to explain cycles formed in a greenhouse climate when eustasy is minimal.
Wan Yang, Dan J. Lehrmann
doaj   +1 more source

Testing the impact of stratigraphic uncertainty on spectral analyses of sedimentary series [PDF]

Climate of the Past, 2016
Spectral analysis is a key tool for identifying periodic patterns in sedimentary sequences, including astronomically related orbital signals. While most spectral analysis methods require equally spaced samples, this condition is rarely achieved either in
M. Martinez, S. Kotov, D. De Vleeschouwer, D. Pas, H. Pälike   +4 more
doaj   +1 more source

Dynamics between order and chaos in conceptual models of glacial cycles

, 2013
The dynamics of glacial cycles is studied in terms of the dynamical systems theory. We explore the dependence of the climate state on the phase of astronomical forcing by examining five conceptual models of glacial cycles proposed in the literature.
Aihara, Kazuyuki, Mitsui, Takahito
core   +1 more source

Optimizing significance testing of astronomical forcing in cyclostratigraphy [PDF]

, 2017
Peer reviewedPublisher ...
Carver, Carver, David B. Kemp, Gradstein, Guyodo, Hasselmann, Hays, Herbert, Hilgen, Hinnov, Huybers, Huybers, Huybers, Kemp, Laskar, Laurin, Mann, Meyers, Meyers, Meyers, Meyers, Meyers, Mix, Moore, Mudelsee, Mudelsee, Mudge, Pelletier, Pälike, Rhines, Sadler, Sadler, Schiffelbein, Suan, Taylor Perron, Thompson, Tipper, Vaughan, Waltham, Wasserstein, Weedon, Wu, Wunsch, Wunsch, Zachos, Zeeden   +45 more
core   +1 more source

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
wiley   +1 more source

The Mid-Pleistocene Transition induced by delayed feedback and bistability [PDF]

, 2018
The Mid-Pleistocene Transition, the shift from 41 kyr to 100 kyr glacial-interglacial cycles that occurred roughly 1 Myr ago, is often considered as a change in internal climate dynamics.
Lenton, Timothy M., Quinn, Courtney, Sieber, Jan, von der Heydt, Anna S.   +3 more
core   +3 more sources

Stepwise Glacial Inception and Prolonged Southern Ocean CO2 Outgassing Linked With Marine Isotope Stage 11

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, G. Winckler, F. Lamy, L. von Stebut, D. A. Frick, C. Basak, A. K. I. U. Kapuge, J. R. Farmer, J. Gottschalk   +8 more
wiley   +1 more source

Orbital and Millennial‐Scale Cycles Paced Climate Variability During the Late Paleozoic Ice Age in the Southwestern Gondwana

Geochemistry, Geophysics, Geosystems, 2020
Orbital cycles are related to variations of Earth's orbit through time and exert profound control on glacial and interglacial climates due to changes in insolation.
M. V. L. Kochhann, J. Cagliari, K. G. D. Kochhann, D. R. Franco   +3 more
doaj   +1 more source

A method for the division of the conglomerate depositional cycle under Milankovitch cycles [PDF]

Journal of Geophysics and Engineering, 2017
The conglomerate layer at the upper section of the 4th member of the Shahejie formation of the Yongan district at the Donying depression is a well-developed sedimentation of several periods. It lacks stable muddy layers and sophisticated classification of the sedimentation periods and the proportion of sedimentary layering in each period has long been ...
Panpan Chen, Nianqiao Fang, Cunlei Li, Jianmei Liu   +3 more
openaire   +1 more source

The regional evolution of a dryland fluvio‐aeolian and lacustrine succession in response to allocyclic forcing: insights from the Early Permian Cutler Group, Utah, USA

Sedimentology, Volume 73, Issue 2, Page 297-354, February 2026.
ABSTRACT Preserved allocyclic signatures in the rock record often reflect basin‐scale climatic variability and serve as key proxies for correlating ancient dryland successions. The notion of climate cyclicity, however, remains largely untested on regionally constrained, outcrop‐calibrated studies.
Oliver Button, Jack G. Connor, Ross P. Pettigrew, Ben A. Kilhams, John A. Howell   +4 more
wiley   +1 more source