Results 1 to 10 of about 2,716 (159)

Optimizing significance testing of astronomical forcing in cyclostratigraphy [PDF]

open access: yes, 2017
Peer reviewedPublisher ...
Carver   +45 more
core   +1 more source

Ordovician cyclostratigraphy and astrochronology

open access: yesGeological Society, London, Special Publications, 2023
Abstract Cyclostratigraphy is an important tool for understanding astronomical climate forcing and for reconstructing geological time in sedimentary sequences, provided that an imprint of insolation variations caused by Earth's orbital eccentricity, obliquity and precession is preserved (Milankovitch forcing).
openaire   +3 more sources

Orbital and Millennial‐Scale Cycles Paced Climate Variability During the Late Paleozoic Ice Age in the Southwestern Gondwana

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Orbital cycles are related to variations of Earth's orbit through time and exert profound control on glacial and interglacial climates due to changes in insolation.
M. V. L. Kochhann   +3 more
doaj   +1 more source

An orbital window into the ancient Sun's mass [PDF]

open access: yes, 2018
Models of the Sun's long-term evolution suggest that its luminosity was substantially reduced 2-4 billion years ago, which is inconsistent with substantial evidence for warm and wet conditions in the geological records of both ancient Earth and Mars ...
Fischer, Woodward W.   +2 more
core   +3 more sources

The Cyclostratigraphy Intercomparison Project (CIP) [PDF]

open access: yesEarth-Science Reviews, 2019
Cyclostratigraphy is an important tool for understanding astronomical climate forcing and reading geological time in sedimentary sequences, provided that an imprint of insolation variations caused by Earth's orbital eccentricity, obliquity and/or precession is preserved (Milankovitch forcing).
Sinnesael, Matthias   +30 more
openaire   +12 more sources

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

Ordovician geology and stratigraphy of China: A synthesis [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
China presently comprises several tectonic blocks and regions assembled over geological time and having independent histories. During the Ordovician, these blocks included South China, North China, Tarim, Qaidam, Junggar, Qiangtang-Qamdo, Lhasa and ...
Yuandong Zhang   +9 more
doaj   +1 more source

Sr-Isotope Stratigraphy: Assigning Time in the Campanian, Pliensbachian, Toarcian, and Valanginian [PDF]

open access: yes, 2016
The trend of marine 87Sr/86Sr against stratigraphic level through sections, whether linear or not, can identify hiatuses and changing rates of sedimentation through those sections and so be a valuable constraint on attempts to assign numerical ages to ...
Landman, NH   +3 more
core   +2 more sources

Cyclostratigraphy of Lower Permian alkaline lacustrine deposits in the Mahu Sag, Junggar basin and its stratigraphic implication

open access: yesFrontiers in Earth Science, 2023
The Lower Permian Fengcheng Formation of the Mahu Sag is one of the most potentially petroliferous sequences in China, and its unique alkaline lacustrine deposits provide important information on the paleoclimate and paleoenvironment of the early Permian.
Yong Tang   +8 more
doaj   +1 more source

Cyclo-, Magneto-, and Bio-Stratigraphic Constraints on the Duration of the CAMP Event and its Relationship to the Triassic-Jurassic Boundary [PDF]

open access: yes, 2003
Early Mesozoic tholeiitic flood basalts of the Central Atlantic Magmatic Province (CAMP) are interbedded throughout much of their extent with cyclical lacustrine strata, allowing Milankovitch calibration of the duration of the extrusive episode.
Et-Touhami, Mohammed   +3 more
core   +2 more sources

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