Cambro-Ordovician paleomagnetic pole position and rubidium-strontium total rock isochron for charnockitic rocks from Mirnyy Station, East Antarctica

Details Cambro-Ordovician paleomagnetic pole position and rubidium-strontium total rock isochron for charnockitic rocks from Mirnyy Station, East Antarctica Cambro-Ordovician paleomagnetic pole position and rubidium-strontium total rock isochron for charnockitic rocks from Mirnyy Station, East Antarctica

Nov 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972e%26psl..16..433m&link_type=abstract

Earth and Planetary Science Letters, vol. 16, Issue 3, pp.433-438

Physics

7

Scientific paper

Charnockitic rocks from Mirnyy Station have yielded a paleomagnetic pole at 1.5°S, 28.5°E with a 95% confidence oval whose semi-axes are 8° and 16°. The rubidium-strontium isotopic date for these rocks is 502 ± 24 my ( = 1.47 × 10 -11 yr -1 ) with an intercept of the total rock isochron line on the 87 Sr/ 86 Sr axis of 0.7194 ± 0.0007. These results support a reconstruction of Gondwanaland in which the Antarctic Peninsula is closely connected with southern South America.

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