Results 51 to 60 of about 464 (126)

Milankovitch cycle of continental deep-water fine-grained sedimentary rocks in the lower submember of Es3 of Well FY1 in Dongying Sag and its significance for shale oil exploration

Energy Exploration & Exploitation, 2023
China has recently faced significant difficulties in the exploitation of its shale oil and gas resources. An essential geological obstacle preventing the breakthrough of Chinese shale oil exploration is the precise identification of productive oil and ...
Wei Wu, Lin Zhang, Yibo Qiu, Guangxu Wang, Jing Yu   +4 more
doaj   +1 more source

Recoverability and Irreversible Information Loss in Physical Inference: Lessons From Quantum Measurement and Climate Reanalysis

Annalen der Physik, Volume 538, Issue 4, April 2026.
ABSTRACT Quantum Mechanics (QM) and Climate Science (CS) confront the epistemic problem of inferring an unobservable state from incomplete, indirect, and context‐dependent measurements. Although their physics differ profoundly (non‐commutative algebra vs.
Gerrit Lohmann
wiley   +1 more source

ANALISI SPETTRALE E CICLI DI MILANKOVITCH IN SUCCESSIONI CRETACICHE DEL SUDALPINO ORIENTALE

Rivista Italiana di Paleontologia e Stratigrafia, 2017
Spectral analysis technique has been applied for the first time in the Southern Alps, to three pelagic and hemipelagic sections (Venetian Prealps and Dolomites) of Barremian-Cenomanian age, characrerized by a couplet alternation of carbonate rich and ...
MICHELE CLAPS, DANIELE MASETTI, FRANCESCO PEDRIELLI, ADA LUCCHI GARAVELLO   +3 more
doaj   +1 more source

High Geomagnetic Reversal Frequency During the Middle to Late Ediacaran (∼570 Ma) Constrained by Integrated Magneto‐ and Cyclostratigraphy

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract The Ediacaran–Cambrian (∼635–539 Ma) geomagnetic field is characterized by unusually high reversal rates and markedly weakened field strength. Estimates of these reversal frequencies can reveal key aspects of deep Earth dynamics and their potential influence on surface environments and early complex life.
J. W. L. Afonso, R. M. Rocha, D. R. Franco, N. B. Dos Santos, C. G. Leandro, P. Franceschinis, A. E. Rapalini, M. J. Arrouy, L. E. Gómez‐Peral, D. G. Poiré, S. Caetano‐Filho, H. D. Brito, R. I. F. Trindade   +12 more
wiley   +1 more source

Astronomical Time Scale of the Late Pleistocene in the Northern South China Sea Based on Carbonate Deposition Record

Journal of Marine Science and Engineering
Variations in solar insolation caused by changes in the Earth’s orbit—specifically its eccentricity, obliquity, and precession—can leave discernible marks on the geologic record.
Chunhui Zhang, Wanyi Zhang, Chengjun Zhang, Liwei Zheng, Shiyi Yan, Yuanhao Ma, Wei Dang   +6 more
doaj   +1 more source

Self-sustained oscillations and global climate changes

Scientific Reports, 2020
The periodic changes of atmospheric CO2 and temperature over the last 5 Myr reveal three features that challenge current climate research, namely: (i) the mid-Pleistocene transition of dominant 41-kyr cycles to dominant 100-kyr cycles, (ii) the absence ...
Luis G. Arnaut, Santiago Ibáñez
doaj   +1 more source

Palaeoenvironmental evolution of the Baltic Sea basin during the Last Interglacial (Eemian, Mikulino stages)—a review

Boreas, Volume 55, Issue 2, Page 282-307, April 2026.
This review presents an investigation of the evolution of the Baltic Sea basin and its connections through the Eemian Stage, based upon sequences of marine and associated deposits from the White Sea to the Southwest Baltic, via the Karelian channel. Pollen analyses, foraminiferal and ostracod analyses provide the evolution of relative sea‐level change,
Philip L. Gibbard, Karen L. Knudsen
wiley   +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

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

Research Status and Development Direction of Well Log Cyclostratigraphy

Cejing jishu
Well log cyclostratigraphy has become the foundation for studying many key scientific issues in the field of geosciences by identifying, extracting, and interpreting astronomical cycles recorded by geophysical logs. This paper analyzes the driving forces
PENG Cheng, ZOU Changchun, CAO Jinyu
doaj   +1 more source