Results 11 to 20 of about 182 (156)

Speleothems as Magnetic Archives: Paleosecular Variation and a Relative Paleointensity Record From a Portuguese Speleothem

open access: yesGeochemistry, Geophysics, Geosystems, 2018
We provide a high‐resolution and complete paleomagnetic study from a middle‐Holocene (~4,100–3,300 years Before Common Era, BCE) dome‐shaped speleothem (SPAIV) from Algarve, Portugal.
J. M. Ponte   +3 more
doaj   +2 more sources

The importance of clays in speleothem magnetic remanence acquisition [PDF]

open access: yesScientific Reports
Speleothems are promising recorders of paleosecular variation of the Earth’s magnetic field, but ambiguities remain about the physical processes active during remanence acquisition.
Rashida Doctor   +4 more
doaj   +2 more sources

Assessing the reliability of paleomagnetic datasets using the R package PmagDiR [PDF]

open access: yesScientific Reports
Paleomagnetism is the most important source of information for determining the position of tectonic plates in the geological past. Over the last few decades significant advancements have been made in improving the reliability of paleomagnetic data ...
Edoardo Dallanave
doaj   +2 more sources

Bayesian Inference of Local Paleosecular Variation from Sparse Paleomagnetic Data

open access: yesJournal of Geophysical Research: Solid Earth
We introduce a novel Bayesian method to construct local paleosecular variation (PSV) curves. By modeling the geomagnetic field as a Gaussian process, global models can be incorporated as informative prior distributions. Because we use Hamiltonian Monte-Carlo methods, complex age distributions resulting for example from radiocarbon calibration can be ...
M. A. Schanner, R. Meyer, L. V. de Groot
openaire   +3 more sources

Brunhes Paleomagnetic Directions and Paleointensities From Northern Hainan Island

open access: yesGeochemistry, Geophysics, Geosystems
Paleomagnetic studies typically assume that the long‐term, time‐averaged geomagnetic field behaves as a geocentric axial dipole (GAD). While paleodirectional data over the past five million years generally agree with GAD predictions, mid‐to‐low latitude ...
Mengqing Wang   +7 more
doaj   +2 more sources

An archaeomagnetic study of the Ishtar Gate, Babylon. [PDF]

open access: yesPLoS ONE
Data from the marriage of paleomagnetism and archaeology (archaeomagnetism) are the backbone of attempts to create geomagnetic field models for ancient times. Paleointensity experimental design has been the focus of intensive efforts and the requirements
Anita Di Chiara   +5 more
doaj   +2 more sources

A Holocene Paleosecular Variation Record From the Northwestern Ross Sea, Antarctica

open access: yesGeochemistry, Geophysics, Geosystems
We present a mid‐to‐late Holocene record of relative paleosecular variation from the Ross Sea region of Antarctica. The 6,700‐year‐long record of inclination, declination, and relative paleointensity from a marine sediment core collected near Cape Adare ...
Olivia J. Truax   +7 more
doaj   +2 more sources

Assessing Paleosecular Variation Averaging and Correcting Paleomagnetic Inclination Shallowing

open access: yesJournal of Geophysical Research: Solid Earth
AbstractThis paper addresses one of the critical questions of scientific inquiry: How do we know when a given data set is representative of the phenomenon being examined? For paleomagnetists, the question is often whether a particular data set sufficiently averaged paleosecular variation (PSV).
David Heslop   +2 more
exaly   +3 more sources

A Feasibility Study of Microbialites as Paleomagnetic Recorders

open access: yesFrontiers in Earth Science, 2021
Microbialites–layered, organosedimentary deposits–exist in the geologic record and extend back in deep time, including all estimated times of inner core nucleation.
Ji-In Jung, Julie A. Bowles
doaj   +1 more source

Current status and problems of magnetostratigraphic scale development for Kamchatka in the Brunhes epoch. Part 1. Theoretical aspect

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2022
Magnetostratigraphy has become increasingly popular among geologists worldwide, as evidenced by recent scientific publications. This article reviews the role and place of magnetostratigraphy in general stratigraphic studies.
A.G. Zubov
doaj   +1 more source

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