Results 51 to 60 of about 513 (116)

Sedimentary Iron Cycling and the Origin and Preservation of Magnetization in Platform Carbonate Muds, Andros Island, Bahamas [PDF]

, 2007
Carbonate muds deposited on continental shelves are abundant and well-preserved throughout the geologic record because shelf strata are difficult to subduct and peritidal carbonate units often form thick, rheologically strong units that resist ...
Bosak, Tanja, Fike, David A., Grotzinger, John P., Kirschvink, Joseph L., Kopp, Robert E., Maloof, Adam C., Poussart, Pascale M., Vali, Hojotollah, Weiss, Benjamin P.   +8 more
core   +1 more source

Bayesian Preprocessing for Palaeomagnetic Sediment Records Using a Flexible Lock‐In Function Approach

Journal of Geophysical Research: Solid Earth, Volume 129, Issue 12, December 2024.
Abstract Geomagnetic field models covering past millennia rely on two main data sources: archaeomagnetic data, that provide snapshots of the geomagnetic field at specific locations, and sediment records, that deliver time series of the geomagnetic field from individual cores.
L. Bohsung, M. Schanner, M. Korte, M. Holschneider   +3 more
wiley   +1 more source

Cooling rate effects on paleointensity estimates in submarine basaltic glass and implications for dating young flows [PDF]

, 2005
Cooling rate effects on the intensity of thermoremanent magnetization (TRM) have been well documented in ceramics. In that case, laboratory cooling is generally more rapid than the initial cooling, leading to an overestimate of the paleofield by 5-10% in
Bergmanis, Eric, Bowles, Julie, Gee, Jeffrey S., Kent, Dennis V., Sinton, John   +4 more
core   +2 more sources

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

Geochemistry, 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, Brendan T. Reilly, Guillaume St‐Onge, France Lagroix, Jean‐Carlos Montero‐Serrano, Joesph S. Stoner, Anne E. Jennings   +6 more
wiley   +1 more source

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

Geochemistry, 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, Gillian M. Turner, Ben M. Kennedy, Alexander R. L. Nichols, Annika Greve, Jim W. Cole, Shaun R. Eaves, Dougal B. Townsend, Graham S. Leonard, Chris E. Conway   +9 more
wiley   +1 more source

Laschamp Excursion at Mono Lake? [PDF]

, 2002
The Laschamp Geomagnetic Excursion (ca. 41 ka) and a related increase of cosmogenic nuclides provides a global tie point among sedimentary and ice core records.
Hemming, Sidney R., Kent, Dennis V., Turrin, Brent D.   +2 more
core   +2 more sources

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

Journal 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, M. Schanner, M. Korte, M. Holschneider   +3 more
wiley   +1 more source

Radiocarbon and Oxidizable Carbon Ratio Dates from Archaeological Sites in East Texas, Part II [PDF]

, 1998
This paper presents a second compilation of recently obtained radiocarbon and oxidizable carbon ratio dates obtained from archaeological sites in East Texas.
Perttula, Timothy K.
core   +1 more source

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

Geochemistry, 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

Current Status of the Norman Site, 34WG2 [PDF]

, 2000
As defined by Finkelstein in his description of excavations at the site, the Norman site currently is completely located within the waters of Fort Gibson Reservoir, a U.S.
Vogele, Louis E., Jr.
core   +1 more source