Results 71 to 80 of about 506 (176)

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

Petroleum 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, Jiaxin SHI, Xiaofei FU, Yanfang LYU, Xianda SUN, Lei GONG, Yunfeng BAI   +6 more
doaj   +1 more source

Interglacials, Milankovitch Cycles, and Carbon Dioxide

, 2010
15 pages, 8 figures.
openaire   +2 more sources

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

Proc Natl Acad Sci U S A, 2022
Lantink ML, Davies JHFL, Ovtcharova M, Hilgen FJ.   +3 more
europepmc   +1 more source

Would Adding the Anthropocene to the Geologic Time Scale Matter?

AGU Advances
Abrupt planetary change forced by the cumulative and overwhelming impacts of human activities in the mid‐twentieth century supports a new geologic epoch, named after Anthropos, the agent of this change.
Francine M. G. McCarthy, Martin J. Head, Colin N. Waters, Jan Zalasiewicz   +3 more
doaj   +1 more source

Integrated bio- and cyclostratigraphy of Middle Triassic (Anisian) ramp deposits, NW Bulgaria

Geologica Carpathica, 2019
A cyclostratigraphic interpretation of peritidal to shallow-marine ramp deposits of the early Middle Triassic (Anisian) Opletnya Member exposed in outcrops along the Iskar River gorge, NW Bulgaria, is presented.
Ajdanlijsky George, Strasser André, Götz Annette E.   +2 more
doaj   +1 more source

Methane and Milankovitch cycles [PDF]

Nature, 1992
J. M. ADAMS, H. FAURE, N. PETIT-MAIRE
openaire   +1 more source

The Milankovitch Theory Revisited to Explain the Mid-Pleistocene and Early Quaternary Transitions

Atmosphere
The theory of orbital forcing as formulated by Milankovitch involves the mediation by the advance (retreat) of ice sheets and the resulting variations in terrestrial albedo. This approach poses a major problem: that of the period of glacial cycles, which
Jean-Louis Pinault
doaj   +1 more source

The limited link between accommodation space, sediment thickness, and inner platform facies distribution (Holocene–Pleistocene, Bahamas)

The Depositional Record, 2019
Cyclic facies variations in shallow‐water carbonate platforms often show repetitive facies patterns that are frequently interpreted to reflect the sedimentary response to variations in sea‐level related to changes in climate linked to orbital variations,
Rieneke Weij, John J. G. Reijmer, Gregor P. Eberli, Peter K. Swart   +3 more
doaj   +1 more source

Astronomical cycle driving of coal-bearing rock system rotations in the Permian Shihezi Formation at Renlou Coal Mine

Solid Earth Sciences
Marine terrestrial transitional sedimentary rocks of Renlou Coal Mine are developed in coal bearing rock formations, which exhibits obvious cyclicity. These sedimentary cycles have a good correspondence with astronomical cycle signals.
Guodong Shi, Duoxi Yao, Xuekuan Shi
doaj   +1 more source

Global Carbon Cycle Recorded in the Deep-sea Sediments and Milankovitch Cycle.

Journal of Geography (Chigaku Zasshi), 1995
Several hundred years of astronomical observations have left no doubt that the Earth's orbit is subject to cyclic variations. While the annual energy receipt of solar radiation over the Earth as a whole is not change, the distribution of this energy, by latitude and by season, is affected by three parameters: an obliquity cycle of 41kyr, an ...
openaire   +2 more sources