Results 111 to 120 of about 3,470 (247)
Geochemistry, Geophysics, Geosystems, 2013 Tholeiite of the oldest oceanic crust was drilled during ODP Legs 129 and 185 at Hole 801C in the western Pacific. Fresh appearing submarine basaltic glass (SBG) was recovered from the tholeiites (∼167 Ma) which has been shown to be nearly ideal for ...
L. Tauxe +3 more
doaj +1 more source
Geochemistry Geophysics Geosystems, 2019 We present a paleomagnetic and rock magnetic data set from two long sediment cores collected from Bellsund and Isfjorden contourite drifts located on the eastern side of the Fram Strait (western Spitsbergen margin).
C. Caricchi +8 more
semanticscholar +1 more source
Geochemistry, Geophysics, GeosystemsThe timing of the formation of the Earth's inner core remains a major mystery in the history of Earth's deep interior, with estimates ranging from >1 billion years to
J. Michael Grappone +3 more
doaj +1 more source
Paleointensity of various DSDP sites (Table 3)
, 2000 The existing database for paleointensity estimates of the ancient geomagnetic field contains more than 1500 data points collected through decades of effort. Despite the huge amount of work put into obtaining these data, there remains a strong bias in the
Lisa Tauxe (6979088) +3 more
core +1 more source
Brunhes Paleomagnetic Directions and Paleointensities From Northern Hainan Island
Geochemistry, Geophysics, GeosystemsPaleomagnetic studies typically assume that the long‐term, time‐averaged geomagnetic field behaves as a geocentric axial dipole (GAD). While paleodirectional data over the past five million years generally agree with GAD predictions, mid‐to‐low latitude ...
Mengqing Wang +7 more
doaj +1 more source
A comparison of different techniques for relative paleointensity
Geophysical Research Letters, 1998 Parallel relative paleointensity records that are supposed to display the same geomagnetic variations often show discrepancies. We compared various techniques of normalization with different parameters involving alternating fields (a.f.) and thermal demagnetization of sediment samples spanning the same period from the Indian and the Pacific oceans. The
Jean‐Pierre Valet, Laure Meynadier
openaire +1 more source
A paleointensity technique for multidomain igneous rocks
Geochemistry, Geophysics, Geosystems, 2013 We developed a paleointensity technique to account for concave‐up Arai diagrams due to multidomain (MD) contributions to determine unbiased paleointensities for 24 trial samples from site GA‐X in Pleistocene lavas from Floreana Island, Galapagos Archipelago.
Wang, Huapei, Kent, Dennis V.
openaire +4 more sources
The intensity of the geomagnetic field from 2.4 Ga old Indian dykes
Geochemistry, Geophysics, Geosystems, 2014 Precambrian paleomagnetic records from dyke swarms provide a unique source of information regarding the Archean geomagnetic field and more specifically the average field strength produced by the early dynamo.
Jean‐Pierre Valet +4 more
doaj +1 more source
Geomagnetic paleointensity data from the Bishop Tuff
, 2011 Geomagnetic paleointensity estimates are being generated from approximately 45 samples of the Bishop Tuff. Absolute paleointensity data and accompanying rock magnetic characterization data will be available for all ...
core
Nonlinear Thermoremanence Acquisition and Implications for Paleointensity Data
, 2007 In paleointensity studies, thermoremanence is generally regarded as a linear function of ambient inagnetic field at low fields comparable to that of the present-day Earth.
Selkin, Peter A. +2 more
core +1 more source