Results 31 to 40 of about 1,873,312 (163)

The Astronomical Pulse of Global Extinction Events

open access: yesThe 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
doaj   +1 more source

Petrological characteristics and shale oil enrichment of lacustrine fine-grained sedimentary system: A case study of organic-rich shale in first member of Cretaceous Qingshankou Formation in Gulong Sag, Songliao Basin, NE China

open access: yesPetroleum Exploration and Development, 2018
Taking organic-rich shale in the first member of Cretaceous Qingshankou Formation in the Gulong Sag, northern Songliao Basin as an example, this study examined the lithofacies classification, petrological characteristics, pore size distribution and their
Bo LIU   +6 more
doaj   +1 more source

Links between annual, Milankovitch and continuum temperature variability [PDF]

open access: yes, 2006
Author Posting. © Nature Publishing Group, 2006. This is the author's version of the work. It is posted here by permission of Nature Publishing Group for personal use, not for redistribution.
William Curry   +4 more
core   +1 more source

Quaternary chronostratigraphy - a review [PDF]

open access: yesBulletin of the Geological Society of Finland, 1992
Quaternary development is characterized by strong climatic fluctuations associated with repeated glacier expansions. Consequently the Quaternary chronostratigraphy is largely based on the dating of climatic fluctuations which have led to large-scale ...
M. Eronen
doaj   +1 more source

Inner workings of Milankovitch cycles [PDF]

open access: yes, 2023
Milankovitch cycles are incoming solar radiation (insolation) cycles forced by variations in Earth’s orbital eccentricity, axial obliquity and precession, and are recorded on Earth in cyclostratigraphy.
Hinnov, Linda A.
core   +1 more source

“Empirical Prewhitening” Spectral Analysis Detects Periodic but Inconsistent Signals in Abyssal Hill Morphology at the Southern East Pacific Rise

open access: yesGeochemistry, Geophysics, Geosystems, 2020
The existence, or not, of periodicities in abyssal hill morphology has been vigorously debated in recent publications, and some have hypothesized that such periodicities are evidence of the impact of Milankovitch cycle‐caused sea level fluctuations on ...
John A. Goff
doaj   +1 more source

Sea level changes versus hydrothermal diagenesis: Origin of Triassic carbonate platform cycles in the Dolomites, Italy: Discussion [PDF]

open access: yes
In his recent paper, Blendinger (2004) presents a new and unconventional hypothesis for the formation of the Triassic Latemàr carbonate cycles. He assigned the cycles to intermittent hydrothermal influence alternating with normal marine deposition ...
Peterhansel, A., Egenhoff, S. O.
core   +1 more source

The complex dynamics of the seasonal component of USA's surface temperature [PDF]

open access: yesAtmospheric Chemistry and Physics, 2010
The dynamics of the climate system has been investigated by analyzing the complex seasonal oscillation of monthly averaged temperatures recorded at 1167 stations covering the whole USA.
A. Vecchio, V. Capparelli, V. Carbone
doaj   +1 more source

Astrochronology and Petroleum Implications of the Chang 8 Member in the Longdong Area, Ordos Basin, China

open access: yesGeosciences
The Chang 8 Member in the Longdong area of the Ordos Basin hosts significant petroleum resources, demonstrating substantial potential for tight oil exploration and development.
Wei Wang   +7 more
doaj   +1 more source

Prediction of fine-grained sedimentary lithofacies distribution based on astronomical cycle isochronous lattice: a case study of Triassic Chang 7 member of Fuxian area, Ordos Basin

open access: yesShiyou shiyan dizhi
Predicting the thickness distribution of different types of continental lithofacies is a fundamental task for selecting and evaluating continental shale oil-rich zones.
Faqi HE   +7 more
doaj   +1 more source

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