Results 41 to 50 of about 222,738 (95)

Paleomagnetic Secular Variations in North Greenland Around 81°N Over the Last 6,000 Years

open access: yesGeochemistry, Geophysics, Geosystems, Volume 25, Issue 10, October 2024.
Abstract We investigate full vector paleomagnetic changes recorded in high‐resolution sediments of Petermann Fjord, North Greenland, deposited over the last 6 kyr, in the context of the recent rapid changes in the geomagnetic field. A Paleomagnetic Secular Variation (PSV) stack (inclination, declination, and relative paleointensity) was reconstructed ...
Juliette Girard   +6 more
wiley   +1 more source

Paleomagnetism‐Based Chronology of Holocene Lava Flows at Mt Ruapehu, Aotearoa New Zealand

open access: yesGeochemistry, Geophysics, Geosystems, Volume 25, Issue 9, September 2024.
Abstract Dating young lava flows is essential for understanding volcano's eruption frequency, yet challenging due to methodological limitations of commonly used dating techniques. Ruapehu (Aotearoa New Zealand) produced many lava flows during the Holocene, but constraints on the timing of these eruptions are scarce. Here, we use paleomagnetic dating to
Pedro Doll   +9 more
wiley   +1 more source

Estimating Post‐Depositional Detrital Remanent Magnetization (pDRM) Effects for Several Lacustrine and Marine Sediment Records Using a Flexible Lock‐In Function Approach

open access: yesJournal of Geophysical Research: Solid Earth, Volume 129, Issue 7, July 2024.
Abstract Geomagnetic field models over past millennia rely on two main data sources: archeomagnetic data provide snapshots of the geomagnetic field at specific locations, and sediment records deliver time series of the geomagnetic field at specific locations.
L. Bohsung   +3 more
wiley   +1 more source

Cosmogenic ³He and ²¹Ne Dating in Accessory Mineral Phases [PDF]

open access: yes, 2010
The development of terrestrial cosmogenic nuclide dating has led to applications as varied as the dating of glacial moraines, establishing slip-rates on faults, measuring the erosion rates of basins, and measuring rates of soil formation.
Amidon, William Henry
core   +1 more source

Local Magnetic Anomalies Explain Bias in Paleomagnetic Data: Consequences for Sampling

open access: yesGeochemistry, Geophysics, Geosystems, Volume 25, Issue 5, May 2024.
Abstract Volcanic rocks are considered reliable recorders of past changes in the Earth's magnetic field. Recent flows, however, sometimes fail to produce the known magnetic field at the time of cooling. Previous research on Mt. Etna suggests paleomagnetic data might not be accurately recorded.
Romy Meyer, Lennart V. de Groot
wiley   +1 more source

First Full‐Vector Archeomagnetic Data From Central Asia (3 BCE to 15 CE Centuries): Evidence for a Large Non‐Dipole Field Contribution Around the First Century BCE

open access: yesJournal of Geophysical Research: Solid Earth, Volume 129, Issue 2, February 2024.
Abstract Unraveling the short‐term behavior of the Earth's past geomagnetic field at regional scales is crucial for understanding its global behavior and, thus, the dynamics of the deep Earth. In this context, obtaining accurate full‐vector geomagnetic field records from regions where archeomagnetic data are absent becomes essential.
R. Bonilla‐Alba   +9 more
wiley   +1 more source

Virtual Dating: Isochron Diagrams

open access: yes, 2004
Virtual Dating teaching package contain exercises, questions and interactive diagrams describing absolute dating techniques used in geology. The Isochron exercise contains interactive (Flash) online exercises that help students to understand radioactive ...
Robert Desharnais
core  

Stalagmite paleomagnetic record of a quiet mid-to-late Holocene field activity in central South America. [PDF]

open access: yesNat Commun, 2022
Jaqueto P   +11 more
europepmc   +1 more source

Key dating features for timber-framed dwellings in Surrey [PDF]

open access: yes, 2013
This article is made available through the Brunel Open Access Publishing Fund. Copyright @ The Vernacular Architecture Group 2013. MORE OpenChoice articles are open access and distributed under the terms of the Creative Commons Attribution License 3.0 ...
Moir, A
core   +1 more source

Alternating Field Demagnetization of Archeomagnetic Samples

open access: yes, 1990
Archeomagnetic age-determination has been carried out on baked earths from archeo・ logical sites in Hyogo Prefecture,Japan. The stability of the natural remanent magnetization (NRM) was examined through progressive demagnetization experiments by ...
TANIZAKI, Yuri   +3 more
core  

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