Results 31 to 40 of about 1,792 (166)

Lithostratigraphic and magnetostratigraphic data from late Cenozoic glacial and proglacial sequences underlying the Altiplano at La Paz, Bolivia

Data in Brief, 2018
We provide lithostratigraphic and magnetostratigraphic data derived from a Plio-Pleistocene continental sediment sequence underlying the Altiplano plateau at La Paz, Bolivia.
Nicholas J. Roberts, René W. Barendregt, John J. Clague   +2 more
doaj   +1 more source

Sclerite formation in the hydrothermal-vent “scaly-foot” gastropod — possible control of iron sulfide biomineralization by the animal [PDF]

, 2006
A gastropod from a deep-sea hydrothermal field at the Rodriguez triple junction, Indian Ocean, has scale-shaped structures, called sclerites, mineralized with iron sulfides on its foot.
Chiba, Hitoshi, Endo, Kazuyoshi, Hashimoto, Jun, Hirata, Takafumi, Horikoshi, Koki, Kato, Yasuhiro, Kirschvink, Joseph L., Kogure, Toshihiro, Kopp, Robert E., Mizota, Chitoshi, Nealson, Kenneth H., Ozaki, Noriaki, Suga, Akinobu, Suzuki, Yohey, Takai, Ken, Tsuchida, Shinji   +15 more
core   +2 more sources

Composite detrital and thermal remanent magnetization in tuffs from Aeolian Islands (southern Tyrrhenian Sea) revealed by magnetic anisotropy

International Journal of Earth Sciences, 2011
This paper reports on the complex relation between rock emplacement and remanence acquisition in tuffs deposited by pyroclastic density currents, disclosed by systematic measurements of the anisotropy of magnetic susceptibility and natural remanent magnetization (NRM). Thermal demagnetization shows that the NRM consists of two components with different
ZANELLA, Elena, Cicchino A., LANZA, Roberto   +2 more
openaire   +1 more source

Importance of titanohematite in detrital remanent magnetizations of strata spanning the Cretaceous‐Paleogene boundary, Hell Creek region, Montana [PDF]

Geochemistry, Geophysics, Geosystems, 2016
AbstractIntermediate composition titanohematite, Fe2‐yTiyO3 with 0.5 ≤ y ≤ 0.7, is seldom the focus of paleomagnetic study and is commonly believed to be rare in nature. While largely overlooked in magnetostratigraphic studies, intermediate titanohematite has been identified as the dominant ferrimagnetic mineral in an array of Late Mesozoic and early ...
Sprain, Courtney J, Feinberg, Joshua M, Renne, Paul R, Jackson, Mike   +3 more
openaire   +3 more sources

The effect of speleothem surface slope on the remanent magnetic inclination [PDF]

, 2018
Speleothems are of interest for high-resolution reconstruction of the Earth's magnetic field. However, little is known about the influence of speleothem morphologies on their natural remanent magnetization (NRM) record.
Bilardello, Bilardello, Borradaile, Bourne, Fisher, Font, Griffiths, Hellstrom, Hill, Hirt, Hrouda, Jackson, Jaqueto, Jelinek, Jezek, King, Kirschvink, Lascu, Lascu, Latham, Latham, Latham, Latham, Lean, Martin, McCabe, Morinaga, Morinaga, Openshaw, Osete, Pavón-Carrasco, Rochette, Schmidt, Scholz, Strauss, Tarling, Tauxe, Tauxe, Terrinha, Verosub, Zhu   +40 more
core   +1 more source

Magnetic stratigraphy of the Villafranchian type-section:(Villafranca d'Asti, Italy)

Annals of Geophysics, 1999
A detailed magnetostratigraphic investigation has been carried out along the section of the Fornace RDB quarry (Villafranca d'Asti, NW Italy), which is the type-section of the Villafranchian and has provided many of the land mammal remains used by ...
R. Lanza, F. Carraro, D. Bormioli, P. Boano   +3 more
doaj   +1 more source

Detection and correction of inclination shallowing in deep sea sediments using the anisotropy of anhysteretic remanence [PDF]

, 1993
Paleomagnetic data from recent Pleistocene to recent deep sea sediments from the continental rise of eastern North America exhibit a cyclical inclination shallowing, up to 30° with respect to the geocentric axial dipole value. This shallowing is strongly
Collombat, Helene, Kent, Dennis V., Rochette, Pierre   +2 more
core   +2 more sources

Natural remanent magnetization acquisition in bioturbated sediment: General theory and implications for relative paleointensity reconstructions

Geochemistry, Geophysics, Geosystems, 2015
We present a general theory for the acquisition of natural remanent magnetizations (NRM) in sediment under the influence of (a) magnetic torques, (b) randomizing torques, and (c) torques resulting from interaction forces.
R. Egli, X. Zhao
doaj   +1 more source

High Potency of Volcanic Contribution to the ∼400 kyr Sedimentary Magnetic Record in the Northwest Pacific

Frontiers in Earth Science, 2020
As the northwest Pacific has been subject to varying terrigenous input linked to paleoclimate change, the concentration of magnetic minerals in deep-sea sediments is often utilized as a proxy to reconstruct the past atmospheric circulation in the ...
Ji Young Shin, Wonnyon Kim, Kiseong Hyeong   +2 more
doaj   +1 more source

Discovery Prospects for a Supernova Signature of Biogenic Origin

, 2011
Approximately 2.8 Myr before the present our planet was subjected to the debris of a supernova explosion. The terrestrial proxy for this event was the discovery of live atoms of 60Fe in a deep-sea ferromanganese crust.
Basu, Bazylinski, Bosch, de Baar, Egli, Egli, Egli, Faivre, Fields, Fitoussi, Jickells, Knie, Knie, Knie, Knie, Kopp, Limongi, Limongi, Moskowitz, Nomoto, R. Egli, Rauscher, Roden, Rugel, S. Bishop, Wang, Woosley, Zachara   +27 more
core   +1 more source