Results 61 to 70 of about 8,049 (227)

Modeling magnetostratigraphy in a borehole [PDF]

GEOPHYSICS, 1989
The magnetic field along a hole bored through a sequence of dipping layers with varying magnetization and planar interfaces is calculated. The emphasis is on recovering remanent magnetization polarity transitions for magnetostratigraphic applications (dating, correlations), although intensity of remanent magnetization can in itself be a useful rock ...
Gallet, Yves, Courtillot, Vincent
openaire   +1 more source

Tethyan magnetostratigraphy from Pizzo Mondello (Sicily) and correlation to the Late Triassic Newark astrochronological polarity time scale [PDF]

, 2004
We present the magnetostratigraphy and stable isotope stratigraphy from an expanded (∼430-m-thick) Upper Triassic marine limestone section at Pizzo Mondello, Sicily, and review published biostratigraphic information that can be used to define the ...
Bernasconi, Stefano M., Di Stefano, Piero, Hernandez, Fatima Martin, Kent, Dennis V., Lowrie, William, Muttoni, Giovanni, Olsen, Paul E.   +6 more
core   +2 more sources

Quaternary high latitude magnetostratigraphy [PDF]

Polar Research, 1987
Magnetostratigraphic dating of Quaternary sediments is in general exclusively based on the identification of the Brunhesl Matuyama boundary and the Jaramillo and Olduvai Subchrons within the Matuyama Chron. Mounting evidence suggests, however, that short excursions or reversal events of the earth's field have also occurred during the Brunhes Chron ...
openaire   +2 more sources

Sedimentation rates in the Makarov Basin, central Arctic Ocean: A paleomagnetic and rock magnetic approach [PDF]

, 2001
Three long sediment cores from the Makarov Basin have been subjected to detailed paleomagnetic and rock magnetic analyses. Investigated sediments are dominated by normal polarity including short reversal excursions, indicating that most of the sediments ...
Aksu, Bleil, Bleil, Bonhommet, Channell, Channell, Channell, Clark, Coles, Darby, Denham, Dominik Weiel, Frederichs, Gard, Gillot, Grantz, Gubbins, Guyodo, Hayashida, Heidi Kassens, Jackson, Jakobsson, Jokat, Kirschvink, Knies, Laj, Langereis, Liddicoat, Lovlie, Lund, Mangerud, Merril, Mienert, Morris, Nils Nørgaard-Pedersen, Norbert R. Nowaczyk, Nowaczyk, Nowaczyk, Nowaczyk, Nowaczyk, Nowaczyk, Nowaczyk, Quidelleur, Reimnitz, Robert F. Spielhagen, Rüdiger Stein, Schneider, Schubert, Scott, Smith, Spielhagen, Stein, Stein, Stoner, Stuiver, Stuiver, Sweeney, Tauxe, Tauxe, Thomas W. Frederichs, Volker, Weber   +61 more
core   +1 more source

High‐resolution record of geomagnetic excursions in the Matuyama chron constrains the ages of the Feiliang and Lanpo Paleolithic sites in the Nihewan Basin, North China

Geochemistry, Geophysics, Geosystems, 2012
The Nihewan Basin (40°N) in North China is a rich source of Early Pleistocene Paleolithic sites and thus a key area for studying early human evolution in high‐latitude (from an early human perspective) East Asia.
Hong Ao, Zhisheng An, Mark J. Dekkers, Qi Wei, Shuwen Pei, Hui Zhao, Hongli Zhao, Guoqiao Xiao, Xiaoke Qiang, Dacheng Wu, Hong Chang   +10 more
doaj   +1 more source

Magnetostratigraphy and Radiometric Chronology

The Quaternary Research (Daiyonki-Kenkyu), 1977
This paper briefly reviews the history and present status of magnetostratigraphy, and re-examines the usefulness of magnetostratigraphy in absolute chronology. At present, two different kinds of time scale are used as standards for magnetostratigraphic age determination.
HIROSHI KITAZATO, SHIRO TAMANYU
openaire   +2 more sources

Loess Studies in Aotearoa New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
Loess in Aotearoa New Zealand (ANZ) has been studied since its first documented recognition (on Banks Peninsula) in 1878 by Julius von Haast. A decade later, John Hardcastle revealed that southern ANZ loess was both glacial in origin and contained signals of past climates.
Brent V. Alloway, David J. Lowe, Bradley J. Pillans, Peter C. Almond, Alan S. Palmer   +4 more
wiley   +1 more source

Temperature‐Driven Silicate Weathering Feedbacks Terminated the Middle Eocene Climatic Optimum

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Continental hydroclimate dynamics and its responses during the Middle Eocene Climatic Optimum (MECO, ∼40 Ma) remain largely unexplored. Here, we present high‐resolution multi‐proxy records from four East Asian lake basins that demonstrate precipitation, chemical weathering, and terrestrial input underwent multi‐phase changes during the MECO ...
Yiquan Ma, Majie Fan, Philip A. E. Pogge von Strandmann, Christian Zeeden, Yangbo Lu, Yongchao Lu, Fang Hao   +6 more
wiley   +1 more source

Speleogenesis in a lens of metamorphosed limestone and ankerite: Ochtiná Aragonite Cave, Slovakia

International Journal of Speleology, 2021
The Ochtiná Aragonite Cave (Western Carpathians) represents an unique natural phenomenon. It originated under particular lithological and hydrogeological conditions of the Ochtiná Karst in which several isolated lenses of Paleozoic crystalline limestone (
Pavel Bella, Pavel Bosák, Petr Pruner, Helena Hercman, Katarína Pukanská, Karol Bartoš, Ľudovít Gaál, Dagmar Haviarová, Peter Tomčík, Šimon Kdýr   +9 more
doaj   +1 more source

High resolution magnetostratigraphy of Caribbean Plio-Pleistocene deep-sea sediments [PDF]

, 1983
The ability of the hydraulic piston corer (HPC) to recover virtually undisturbed sections of semi-consolidated deep-sea sediments suitable for paleomagnetic study was first demonstrated on Leg 64 and Leg 68 of the Glomar Challenger.
Kent, Dennis V., Spariosu, Dann J.
core   +2 more sources