Results 101 to 110 of about 3,442,186 (236)

Geochemical trends and Milankovitch cycles within sediment from the North Atlatnic Ocean

, 2003
A geochemical study of sediment samples taken from North Atlantic Ocean Drilling Program (ODP) site 980 was undertaken to evaluate possible Milankovitch cycles and their inter-relationships with climatically determined geochemical variations.
현상민, Naokaze Ahagon, 윤호일
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Upward shallowing platform cycles: A response to 2.2 billion years of low-amplitude, high-frequency (Milankovitch band) sea level oscillations [PDF]

, 1986
Shallow-water carbonate platforms, characterized by sequences of small-scale upward shallowing cycles, are common in the Phanerozoic and Proterozoic stratigraphic record.
Grotzinger, J. P.
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Geographic variability in dust and temperature in climate scaling regimes over the Last Glacial Cycle [PDF]

Climate of the Past
Temperature and mineral dust records serve as valuable palaeoclimatic indicators for studying atmospheric variability across different temporal scales. In this study, we employed Haar fluctuations to analyse global spatiotemporal atmospheric variability ...
N. Acuña Reyes, E. van't Wout, S. Lovejoy, F. Lambert   +3 more
doaj   +1 more source

Third-order depositional sequences reflecting Milankovitch cyclicity

, 2005
The origin of third-order depositional sequences remains debatable, and in many cases it is not clear whether they were controlled by tectonic activity and/or by eustatic sea-level changes.
Hillgärtner, Heiko, Pittet, Bernard, Strasser, André, Hug, Wolfgang   +3 more
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Quasi-100 ky glacial-interglacial cycles triggered by subglacial burial carbon release [PDF]

Climate of the Past, 2007
A mechanism is proposed in which climate, carbon cycle and icesheets interact with each other to produce a feedback that can lead to quasi-100 ky glacial-interglacial cycles. A central process is the burial and preservation of organic carbon by icesheets
N. Zeng, N. Zeng
doaj  

An integrated sequence stratigraphic, palaeoenvironmental, and chronostratigraphic analysis of the Tangahoe Formation, southern Taranaki coast, with implications for mid-Pliocene (c. 3.4–3.0 Ma) glacio-eustatic sea-level changes

, 2005
Sediments of the mid-Pliocene (c. 3.4–3.0 Ma) Tangahoe Formation exposed in cliffs along the South Taranaki coastline of New Zealand comprise a 270 m thick, cyclothemic shallow-marine succession that has been gently warped into a north to south trending,
Nelson, Campbell S., Peter R. King, Hugh E. G. Morgans, Campbell S. Nelson, Peter J. J. Kamp, Michael Rosenberg, Naish, Timothy R., Greg H. Browne, Richetts, Brian, Wilson, Gary S., Tim R. Naish, Browne, Gregory H., Morgans, Hugh E.G., Wehland, Florian, Gary S. Wilson, Kamp, Peter J.J., Richard A. Cook, Cook, Richard A., Smale, David, King, Peter R., David Smale, Rosenberg, Michael, Brian Ricketts, Florian Wehland   +23 more
core   +1 more source

Diagenetic Self-Organization and Stochastic Resonance in a Model of Limestone-Marl Sequences

Geofluids, 2018
Banded patterns in limestone-marl sequences (“rhythmites”) form widespread sediments typical of shallow marine environments. They are characterized by alternations of limestone-rich layers and softer calcareous-clayey material (marl) extending over ...
Ivan L’Heureux
doaj   +1 more source

Millennial-scale climate changes manifest Milankovitch combination tones and Hallstatt solar cycles in the Devonian greenhouse world

, 2019
Sub-Milankovitch rhythmic features in sedimentary records have been reported from throughout geological time. However, their origin remains enigmatic, in particular during so-called greenhouse periods in Earth’s history.
Hilgen, F.J., Da Silva, A.-C., Stratigraphy & paleontology, Dekkers, M.J., Slavík, L., Hladil, J., De Vleeschouwer, D., Stratigraphy and paleontology, Chadimova, L., Paleomagnetism   +9 more
core   +1 more source

Astronomical Orbital Cycle-Driven Coevolution of Paleoclimate and Sea Level with Sedimentary Response: A Case Study from the Upper Member of the Miocene Zhujiang Formation in the Enping Depression, South China Sea

Applied Sciences
This study focuses on the upper section of the Zhujiang Formation in the Enping Sag of the Zhujiangkou Basin in the South China Sea, investigating the mechanisms by which astronomical orbital cycles drive paleoclimate, sea-level fluctuations, and ...
Shangfeng Zhang, Chenjun Zeng, Enze Xu, Yaning Wang, Rui Zhu, Rui Han, Gaoyang Gong   +6 more
doaj   +1 more source

Lateral discrepancies of cycle patterns in the Latemàr, Triassic, Italian Dolomites

The well-known cyclic carbonate succession of the Middle Triassic Latemàr Massif in the Italian Dolomites reveals significant lateral variability in cycle numbers in platform-interior strata.
Peterhänsel, A., Egenhoff, S. O.
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