paleomagneticallyとは 意味・読み方・使い方

副詞

paleomagnetically (comparative more paleomagnetically, superlative most paleomagnetically)

1. (geology) In a way that has to do with paleomagnetism
   • 1997, April 25, Gregory J. Retallack, “Early Forest Soils and Their Role in Devonian Global Change”^[1], Science, volume 276, number 5312, pages 583-585: 

     The paleomagnetically determined paleolatitude of the Rosemary paleosol during the middle Devonian was about 40° ± 14° (18 ).

   • 1997, September 26, Walter H. F. Smith & David T. Sandwell, “Global Sea Floor Topography from Satellite Altimetry and Ship Depth Soundings”^[2], Science, volume 277, number 5334, pages 1956-1962: 

     It is based on the following observations: (i) different regions in the oceans subside like BL until different flattening ages, some as old as 170 Ma (49 ); (ii) depth and heat flow in some old basins behave like BL but with an effective thermal age t e, which is younger than the (paleomagnetically determined) actual age t m (50 ); (iii) effective elastic lithosphere thicknesses under some intraplate volcanoes suggest that hot spots produce a "thermal rejuvenation," reducing t e (51 ); (iv) the depths and subsidence of hot spot swells suggest that many swells reduce t e to the same value (52 ); and (v) on old lithosphere, it is hard to find areas that have not been near hot spots (53 ).

   • 1998, January 23, Jon E. Mound & Jerry X. Mitrovica, “True Polar Wander as a Mechanism for Second-Order Sea-Level Variations”^[3], Science, volume 279, number 5350, pages 534-537: 

     Numerical predictions based on realistic viscoelastic Earth models and paleomagnetically constrained polar motion yield global-scale, differential sea-level trends that can be as large as ~200 meters.

   • 2001, March 9, S. Mukhopadhyay et al., “A Short Duration of the Cretaceous-Tertiary Boundary Event: Evidence from Extraterrestrial Helium-3”^[4], Science, volume 291, number 5510, pages 1952-1955: 

     Estimates of this time interval are based on the assumption that the K-T clay was deposited at the same rate as the clay fraction in the surrounding paleomagnetically dated limestones [e.g., (8 )]; this assumption is questionable during such a turbulent period.