IGEBA   23946
INSTITUTO DE GEOCIENCIAS BASICAS, APLICADAS Y AMBIENTALES DE BUENOS AIRES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
PALEOMAGNETIC EVIDENCE OF A LATE EDIACARAN OCEAN IN SOUTH AMERICA?
Autor/es:
RAPALINI, AUGUSTO E.; SANCHEZ BETTUCCI, LEDA; TOHVER, ERIC
Lugar:
Sao Paulo
Reunión:
Congreso; LatinMag 2015; 2015
Institución organizadora:
Asoc. Latinoamericana de Paleomagnetismo y Geomagnetismo
Resumen:
Inrecent years, a controversy arose on whether a large ocean, called Clymene,existed between the Amazonian craton and the Rio de la Plata / Congo-Sao Franciscocratons in the late Ediacaran. Comparison of the available reliablepaleomagnetic poles from the latter two cratons, West Africa and Laurentia forthe interval 615-560 Ma suggests that by ca. 575 Ma a large ocean exitedbetween Laurentia-Amazonia-West Africa on one side and Río de la Plata and Congo-SaoFrancisco on the other. This conclusion is still valid whether the ?highlatitude? or the ?low latitude? option is chosen for Laurentia. However,paleomagnetic data from the proper Amazonia are needed for definiteconclusions.