Results 31 to 40 of about 733,308 (198)

Disentangling the Evidence of Milankovitch Forcing From Tree-Ring and Sedimentary Records

open access: yesFrontiers in Earth Science, 2022
Tree-ring records constitute excellent high-resolution data and provide valuable information for climate science and paleoclimatology. Tree-ring reconstructions of past temperature variations agree to show evidence for annual-to-centennial anomalies in ...
Samuli Helama   +13 more
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

Enhanced climate variability in the tropics: a 200 000 yr annual record of monsoon variability from Pangea's equator [PDF]

open access: yesClimate of the Past, 2011
A continuous series of 209 000 evaporite varves from the equator of arid western Pangea (age = −255 ma), as a proxy for surface temperature, has a complete suite of Milankovitch cycles and harmonics as expected for a rectified reaction to precession ...
R. Y. Anderson
doaj   +1 more source

Linking the Variation of Sediment Accumulation Rate to Short Term Sea-Level Change Using Cyclostratigraphy: Case Study of the Lower Berriasian Hemipelagic Sediments in Central Tunisia (Southern Tethys)

open access: yesFrontiers in Earth Science, 2021
High-resolution magnetic susceptibility and % CaCO3 records (5 to 10 cm sampling interval) are used to track astronomical cycles from a Lower Berriasian record from central Tunisia.
Hamdi Omar   +4 more
doaj   +1 more source

Persistent Magma‐Rich Waves Beneath Mid‐Ocean Ridges Explain Long Periodicity on Ocean Floor Fabric

open access: yesGeophysical Research Letters, 2022
The ocean floor makes up the majority of the Earth's surface and yet, its geomorphology is not fully understood. Recent debate has focused on whether sea level changes—driven by Milankovitch glacial cycles—generate the abyssal hill fabric of the ocean ...
S. J. Sim
doaj   +1 more source

RETRACTED: 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

Genetic mechanism of multi-scale sedimentary cycles and their impacts on shale-oil distribution in Permian Lucaogou Formation, Jimusar Sag, Junggar Basin

open access: yesUnconventional Resources, 2023
Complex lithofacies of Lucaogou Formation in Jimusar Sag promote strong heterogeneity of oil distribution in fine grained sedimentary rocks. It is of great significance to define the formation mechanism of fine-grained sedimentary rocks for favorable ...
Kelai Xi   +4 more
doaj   +1 more source

GENERALIZED MILANKOVITCH CYCLES AND LONG-TERM CLIMATIC HABITABILITY [PDF]

open access: yesThe Astrophysical Journal, 2010
Although the Earth's orbit is never far from circular, terrestrial planets around other stars might experience substantial changes in eccentricity that could lead to climate changes, including possible "phase transitions" such as the snowball transition (or its opposite).
Spiegel, David S.   +4 more
openaire   +3 more sources

Development and controlling factors of shale lithofacies cycles in a continental rift basin: A case study of Es4u in the Boxing Subsag of Dongying Sag, Bohai Bay Basin, China

open access: yesFrontiers in Earth Science, 2023
The shale of the upper Es4 formation (Es4u), deposited during the Eocene in the Boxing Subsag of the Dongying Sag, is a typical set of lime-rich lacustrine shale in a continental rift basin.
Zhengwei Fang   +6 more
doaj   +1 more source

Hierarchical Milankovitch and sub-Milankovitch cycles in the environmental magnetism of the lower Shahezi Formation, Lower Cretaceous, Songliao Basin, northeastern China

open access: yesFrontiers in Earth Science, 2023
SK-2 borehole in Songliao Basin provides unprecedented geological materials for investigating the Early Cretaceous continental paleoenvironment and paleoclimate in northeastern China.
Shujing Zhang   +10 more
doaj   +1 more source

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