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High Geomagnetic Intensity During the Mid-Cretaceous from Thellier Analyses of Single Plagioclase Crystals
Recent numerical simulations have yielded the most efficient geodynamo, having the largest dipole intensity when reversal frequency is low. Reliable paleointensity data are limited but heretoforeExpand
Trading partners: Tectonic ancestry of southern Africa and western Australia, in Archean supercratons Vaalbara and Zimgarn
Original connections among the world's extant Archean cratons are becoming tractable by the use of integrated paleomagnetic and geochronologic studies on Paleoproterozoic mafic dyke swarms. Here weExpand
THE PALEOMAGNETISM OF SINGLE SILICATE CRYSTALS: RECORDING GEOMAGNETIC FIELD STRENGTH DURING MIXED POLARITY INTERVALS, SUPERCHRONS, AND INNER CORE GROWTH
[1] The basic features of the geomagnetic reversal chronology of the last 160 million years are well established. The relationship between this history and other features of the field, however, hasExpand
Evolving core conditions ca. 2 billion years ago detected by paleosecular variation
Abstract Paleomagnetic data provide one of the few probes available to interrogate early evolution of the core. Here we apply this probe by examining the latitudinal dependence of paleosecularExpand
Grain size dependence of low-temperature remanent magnetization in natural and synthetic magnetite: Experimental study
Magnetic measurements at cryogenic temperatures (<300 K) proved to be useful in paleomagnetic and rock magnetic research, stimulating continuous interest to low-temperature properties of magnetiteExpand
Co-location of eruption sites of the Siberian Traps and North Atlantic Igneous Province: Implications for the nature of hotspots and mantle plumes
Abstract One of the striking exceptions to the mantle plume head–tail hypothesis that seeks to explain magmatism of large igneous provinces (LIPs) and hotspot tracks is the ~250 million-year-oldExpand
Paleomagnetism of ∼1.09 Ga Lake Shore Traps (Keweenaw Peninsula, Michigan): new results and implications
We report paleomagnetic data from a new section of the ∼1.09 Ga Lake Shore Traps exposed on Silver Island (10 flows) and on the adjacent mainland (two flows) along the northwestern coastline of theExpand
Gigantism in unique biogenic magnetite at the Paleocene–Eocene Thermal Maximum
We report the discovery of exceptionally large biogenic magnetite crystals in clay-rich sediments spanning the Paleocene–Eocene Thermal Maximum (PETM) in a borehole at Ancora, NJ. Aside fromExpand
Paleomagnetic evidence for modern-like plate motion velocities at 3.2 Ga
Archean basalts from the Pilbara Craton, Western Australia record the oldest long-range lithospheric motion identified to date. The mode and rates of tectonic processes and lithospheric growth duringExpand
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