Results 31 to 40 of about 824 (202)

Identification of Astronomical Cycles in Upper Cretaceous Sifangtai Formation and Constraints on Depositional Age of Uranium Mineralized Sandstones in Qian’an Area of Songliao Basin

open access: yesYuanzineng kexue jishu
Cyclostratigraphy is widely applied in establishing high-precision sequence stratigraphic frameworks and astronomical time scales, making it an important field in the quantitative study of sedimentology.
WANG Junxian1, 2, ,  LI Ziying1, 2, ,  XING Zuochang1, 2,  LIU Jungang1, 2,  SHI Qingping1, 2,  TIAN Mingming1, 2,  JIA Licheng1, 2
doaj   +1 more source

Palaeogeography of a shallow carbonate platform: The case of the Middle to Late Oxfordian in the Swiss Jura Mountains

open access: yesJournal of Palaeogeography, 2015
The Oxfordian (Late Jurassic) carbonate-dominated platform outcropping in the Swiss Jura Mountains offers a good biostratigraphic, sequence-stratigraphic, and cyclostratigraphic framework to reconstruct changes in facies distribution at a time-resolution
André Strasser   +2 more
doaj   +1 more source

Aligning and synchronization of MIS5 proxy records from Lake Ohrid (FYROM) with independently dated Mediterranean archives: implications for DEEP core chronology [PDF]

open access: yesBiogeosciences, 2016
The DEEP site sediment sequence obtained during the ICDP SCOPSCO project at Lake Ohrid was dated using tephrostratigraphic information, cyclostratigraphy, and orbital tuning through the marine isotope stages (MIS) 15-1. Although this approach is suitable
G. Zanchetta   +12 more
doaj   +1 more source

The ∼170 kyr astronomical cycle in the Early Permian Lucaogou Formation of the Junggar Basin

open access: yesFrontiers in Earth Science
According to Milankovitch’s theory, periodic climate change in Earth’s history is controlled by the periodic changes in the Earth’s orbit and axis of rotation. Milankovitch cycle include eccentricity, obliquity, and precession cycles. In addition to them,
Yuyin Li   +10 more
doaj   +1 more source

The Wunstorf Drilling Project: Coring a Global Stratigraphic Reference Section of the Oceanic Anoxic Event 2 [PDF]

open access: yesScientific Drilling, 2007
The Wunstorf drilling project aims at establishing a high resolution stable isotope record for the black shale succession (OAE 2) of the CTBI and developing this into a globally applicable high resolutionbio- and chemostratigraphic reference section ...
Markus Wilmsen   +4 more
doaj   +1 more source

Pacing Early Mars Sedimentary Rock Formation

open access: yesGeophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Mars' sedimentary rock record documents past surface and/or near‐surface liquid water. However, paleoclimate models struggle to explain conditions warm enough for past liquid water. One hypothesis is transient warming by H2 ${\mathrm{H}}_{2}$‐CO2 ${\text{CO}}_{2}$ collision‐induced absorption (CIA) (H2 ${\mathrm{H}}_{2}$‐CO2 ${\text{CO}}_{2 ...
M. L. Turner, E. S. Kite
wiley   +1 more source

Internal and External Modulation of Folding Rates With 104 to 105 Year Time Resolutions From Growth Strata, Pico del Aguila, Spain

open access: yesGeochemistry, Geophysics, Geosystems, 2021
High‐resolution cyclostratigraphy in growth strata are used to reconstruct unsteady folding rates at the regional‐scale Pico del Aguila anticline, southern Pyrenees, to evaluate deformation modulation. Magnetic polarity stratigraphy was used to calibrate
David J. Anastasio   +4 more
doaj   +1 more source

Iron–Phosphorus–Carbon Coupled Cycling in Lacustrine System of Ordos Basin During the Middle Triassic

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract Widespread organic‐rich shales are associated with perturbations in productivity or preservation conditions; however, the major controlling factors, especially the phosphorus (P) and iron (Fe) interactions and their impacts on organic carbon burial in the paleolake ecosystem remain poorly understood.
Bo Wang   +7 more
wiley   +1 more source

The regional evolution of a dryland fluvio‐aeolian and lacustrine succession in response to allocyclic forcing: insights from the Early Permian Cutler Group, Utah, USA

open access: yesSedimentology, Volume 73, Issue 2, Page 297-354, February 2026.
ABSTRACT Preserved allocyclic signatures in the rock record often reflect basin‐scale climatic variability and serve as key proxies for correlating ancient dryland successions. The notion of climate cyclicity, however, remains largely untested on regionally constrained, outcrop‐calibrated studies.
Oliver Button   +4 more
wiley   +1 more source

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