Further paleomagnetic results from the Michikamau Intrusion, Labrador
作者： R. F. Emslie , E. Irving , J. K. Park
DOI: 10.1139/E76-108
关键词:
摘要: Newly available isotopic age measurements and paleomagnetic results on rocks of the Michikamau Intrusion and its surroundings have made possible more precise estimates of the position and age of the paleomagnetic pole. Results from six new collecting localities, when combined with results from six different collecting localities reported earlier, provide a pole position at 1½° S, 142 °W(A95 = 4½°). The age of crystallization of the intrusion is about −1460 Ma and the age of the pole is shown to be about −1450 Ma. The remanence is caused by fine grained, titanium-free magnetite and hematite.
harvard.edu
nrcresearchpress.com参考文章(8)
J.D.A. Piper, Magnetic stratigraphy and magnetic-petrologic properties of Precambrian Gardar lavas, South Greenland Earth and Planetary Science Letters. ,vol. 34, pp. 247- 263 ,(1977) , 10.1016/0012-821X(77)90009-7
G.N. Hanson, P.W. Gast, Kinetic studies in contact metamorphic zones Geochimica et Cosmochimica Acta. ,vol. 31, pp. 1119- 1153 ,(1967) , 10.1016/S0016-7037(67)80053-X
S. Moorbath, Recent advances in the application and interpretation of radiometric age data Earth-Science Reviews. ,vol. 3, pp. 111- 133 ,(1967) , 10.1016/0012-8252(67)90373-X
G. Pullaiah, E. Irving, K.L. Buchan, D.J. Dunlop, Magnetization changes caused by burial and uplift Earth and Planetary Science Letters. ,vol. 28, pp. 133- 143 ,(1975) , 10.1016/0012-821X(75)90221-6
R. Fisher, Dispersion on a Sphere Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. ,vol. 217, pp. 295- 305 ,(1953) , 10.1098/RSPA.1953.0064
C. W. F. Everitt, J. A. Clegg, A Field Test of Palaeomagnetic Stability Geophysical Journal International. ,vol. 6, pp. 312- 319 ,(1962) , 10.1111/J.1365-246X.1962.TB00354.X
GS Murthy, ME Evans, DI Gough, None, Evidence of Single-Domain Magnetite in the Michikamau Anorthosite Canadian Journal of Earth Sciences. ,vol. 8, pp. 361- 370 ,(1971) , 10.1139/E71-036
R K Wanless, R D Stevens, G R Lachance, R Y H Rimsaite, Age determinations and geological studies part 1 - isotopic ages, report 5 Natural Resources Canada/ESS/Scientific and Technical Publishing Services. ,(1965) , 10.4095/101021