Results 11 to 20 of about 407 (173)

Identification of Milankovitch sedimentary cycle in Fengcheng Formation, Mahu depression: a case study of well Maye 1

open access: yesFrontiers in Earth Science
The sedimentary cycle of Fengcheng Formation in Junggar Basin changes rapidly and is difficult to identify. The low classification accuracy of high-frequency fine-grained sedimentary cycles restricts the exploration of unconventional shale oil and gas ...
Ran Wang   +3 more
doaj   +3 more sources

Milankovitch cycles in banded iron formations constrain the Earth–Moon system 2.46 billion years ago [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2022
Margriet Lantink   +2 more
exaly   +2 more sources

Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 27-82., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm   +2 more
wiley  

+3 more sources

Low-latitude climate variability in the Heinrich frequency band of the Late Cretaceous greenhouse world [PDF]

open access: yesClimate of the Past, 2014
Deep marine successions of early Campanian age from DSDP (Deep Sea Drilling Project) site 516F drilled at low paleolatitudes in the South Atlantic reveal distinct sub-Milankovitch variability in addition to precession, obliquity and eccentricity-related ...
N. J. de Winter, C. Zeeden, F. J. Hilgen
doaj   +1 more source

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

open access: yesClimate 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   +4 more
doaj   +1 more source

Quantitative impact of astronomical and sun-related cycles on the Pleistocene climate system from Antarctica records

open access: yesQuaternary Science Advances, 2021
We use the benefits of the full-resolution methodology for time-series decomposition singular spectrum analysis to assess the quantitative impact of orbital and, for the first time, millennial-scale Sun-related climate responses from EPICA records.
Paolo Viaggi
doaj   +1 more source

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

open access: yesEnergy 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   +4 more
doaj   +1 more source

Comparison of variations in sediment accumulation rates of the upper part of Zakeen Formation through cyclostratigraphic study in 2SK-1 and 2SKD-1 wells in Salman gas field [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2020
The Zakeen Formation is one of the possible gas reservoirs in the Zagros sedimentary basin. In this paper, the cyclostratigraphic study of the upper part of the Zakeen Formation was performed by using evolutionary spectral analysis methods.
Omid Falahatkhah   +2 more
doaj   +1 more source

Comparison of Recently Proposed Causes of Climate Change

open access: yesAtmosphere, 2023
This paper compares the ideas contained in the main papers published on climate change since World War II to arrive at a suggested consensus of our present knowledge regarding climatic changes and their causes.
Stuart A. Harris
doaj   +1 more source

Time-calibrated Milankovitch cycles for the late Permian [PDF]

open access: yesNature Communications, 2013
AbstractAn important innovation in the geosciences is the astronomical time scale. The astronomical time scale is based on the Milankovitch-forced stratigraphy that has been calibrated to astronomical models of paleoclimate forcing; it is defined for much of Cenozoic–Mesozoic.
Wu, Huaichun   +6 more
openaire   +2 more sources

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