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pro vyhledávání: '"Michael D. Fuller"'
Autor:
Michael D. Fuller
Publikováno v:
Geological Society of America Abstracts with Programs.
Autor:
William S. Cassata, Sonia M. Tikoo, Michael D Fuller, David L. Shuster, Jérôme Gattacceca, Clément Suavet, Benjamin P. Weiss, Eduardo A. Lima, Francis Nimmo
Publikováno v:
Earth and Planetary Science Letters. 404:89-97
Recent analyses of Apollo samples have demonstrated that a core dynamo existed on the Moon between at least 4.25 and 3.56 billion years ago (Ga) with surface field intensities reaching ∼70 μT. However, it is unknown when the Moon's magnetic field
Autor:
Lindsey Chan, William S. Cassata, Clément Suavet, Jérôme Gattacceca, Benjamin P. Weiss, Ian Garrick-Bethell, David L. Shuster, Timothy L. Grove, Michael D Fuller, James W. Head
Publikováno v:
Proceedings of the National Academy of Sciences. 110:8453-8458
The lifetime of the ancient lunar core dynamo has implications for its power source and the mechanism of field generation. Here, we report analyses of two 3.56-Gy-old mare basalts demonstrating that they were magnetized in a stable and surprisingly i
Publikováno v:
Studia Geophysica et Geodaetica. 52:225-235
The REM(AF) method is a new tool for the analysis of the origin and alternating field demagnetization coercivity spectra of the remanent magnetization. We applied this method on precambrian Gila diabase sheets from Arizona in order to identify the hi
Publikováno v:
Geophysical Journal International. 169:91-99
SUMMARY The spatio-temporal variations in the main geomagnetic field are analysed using Maxwell's source representation of the potential function defined by Maxwell's theory of poles. Maxwell sources up to order 4 are obtained for three main geomagne
Publikováno v:
Physics of the Earth and Planetary Interiors. 156:242-260
Ocean Drilling Program (ODP) Leg 182, to the Great Australian Bight (GAB), Leg 189 around Tasmania, and Leg 194 off the Great Barrier Reef on the Marion Plateau, all sampled thick carbonate sections that tested the coring techniques and the magnetics
Autor:
Michael D Fuller
Publikováno v:
Earth and Planetary Science Letters. 245:605-615
The possibility that precession provides power to the geodynamo has been tested by comparing variations in field intensity and the occurrence of excursions and reversals with the obliquity signal. The strongest minima in the paleomagnetic intensity r
Autor:
Norman F. Ness, Peter J. Wasilewski, Mario H. Acuña, Tomas Kohout, Michael D Fuller, Emilio Herrero-Bervera, Gunther Kletetschka
Publikováno v:
Physics of the Earth and Planetary Interiors. 154:290-298
Thermally acquired remanent magnetization is important for the estimation of the past magnetic field present at the time of cooling. Rocks that cool slowly commonly contain magnetic grains of millimeter scale. This study investigated 1-mm-sized magne
Publikováno v:
Geochimica et Cosmochimica Acta. 68:4963-4969
The δ 13 C values of thirty-four individual amino acids and two pyridine carboxylic acids have been obtained fromthe Murchison meteorite. They were found to range from +4.9 to +52.8‰, with statistically significant differences observed both within
Autor:
Edward Scott, Michael D Fuller
Publikováno v:
Earth and Planetary Science Letters. 220:83-90
The crustal magnetic field of Mars differs markedly from Earth’s as the Martian features are an order of magnitude stronger and are not distributed over the whole globe as on Earth, but are concentrated in a band in the southern highlands. Unless t