Results 11 to 20 of about 2,716 (159)

On the peritidal cycles and their diagenetic evolution in the Lower Jurassic carbonates of the Calcare Massiccio Formation (Central Apennines) [PDF]

open access: yesGeologica Carpathica, 2015
This paper shows the environmental changes and high-frequency cyclicity recorded by Lower Jurassic shallow-water carbonates known as the Calcare Massiccio Formation which crop out in the central Apennines of Italy.
Brandano Marco   +3 more
doaj   +3 more sources

CYCLOSTRATIGRAPHY: A METHODOLOGICAL APPROACH

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2002
Aim of this study is a synthetic description of the most used methodologies of cylostratigraphic analysis for the astronomical calibration of sedimentary sequences.
MARIO SPROVIERI   +3 more
doaj   +4 more sources

Milankovitch Period Uncertainties and Their Impact On Cyclostratigraphy [PDF]

open access: yesJournal of Sedimentary Research, 2015
Astronomically calibrated cyclostratigraphy relies on correct matching of observed sedimentary cycles to predicted astronomical drivers such as eccentricity, obliquity and climate-precession. However the periods of these astronomical cycles, in the past,
David Waltham
exaly   +3 more sources

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

Combined Magnetostratigraphy From Three Localities of the Rainstorm Member of the Johnnie Formation in California and Nevada, United States Calibrated by Cyclostratigraphy: A 13 R/Ma Reversal Frequency for the Ediacaran

open access: yesFrontiers in Earth Science, 2021
A combined magnetostratigraphy for the Rainstorm Member of the Ediacaran Johnnie Formation was constructed using the sediment accumulation rates determined by rock magnetic cyclostratigraphy for three localities of the Rainstorm Member to provide a high ...
Kenneth P. Kodama
doaj   +1 more source

A hundred years of Milutin Milankovic's climate change theory-geological implications [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2020
Milanković’s cycles theory published hundred years ago is the most important theory in climate science and had great influence on Earth disciplines. Nevertheless, his work waited for more than fifty years for confirmation.
Radivojević Dejan
doaj   +1 more source

Cyclostratigraphy and high-frequency sedimentary cycle framework for the Late Paleozoic Fengcheng Formation, Junggar Basin

open access: yesFrontiers in Earth Science, 2023
The Late Paleozoic Fengcheng Formation within the Mahu Sag of the Junggar Basin (China) harbors the world’s oldest alkaline lake hydrocarbon source rocks.
Guoyong Liu   +14 more
doaj   +1 more source

Effects of astronomical orbital cycle and volcanic activity on organic carbon accumulation during Late Ordovician–Early Silurian in the Upper Yangtze area, South China

open access: yesPetroleum Exploration and Development, 2021
Based on field outcrop data, the effects of cyclic change of astronomical orbit and volcanic activity on organic carbon accumulation during the Late Ordovician – Early Silurian in the Upper Yangtze area were studied using cyclostratigraphic and ...
Xi ZHANG   +8 more
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

Reconstruction of Lake-Level Changes by Sedimentary Noise Modeling (Dongying Depression, Late Eocene, East China)

open access: yesEnergies, 2023
The late Eocene succession of the Dongying Depression forms a highly productive hydrocarbon source. However, due to lack of an unambiguous fine chronostratigraphic framework for the late Eocene stratigraphy, it is challenging to understand the paleolake ...
Zhongheng Sun   +4 more
doaj   +1 more source

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