OUTLINE OF THE PROJECT

In the 'Structure and Evolution of the East Antarctic Lithosphere (SEAL) Project' , we are planning to carry out goescientific field work in Western Enderby Land including the Amundsen and Casey Bay regions, and intra-continental nunataks during the period from 1996. The geoscientific themes are as follows:

• Formation of ancient crust and its composition.
• Structure and compositions of lower continental crust.
• Origin of ultra-high temperature metamorphism.
• Tectonics and geochronology of the Napier and Rayner Complexes.
• Paleomagnetic intensity and paleolatitude of East Antarctica in Precambrian.
• Formation and evolution of continental ice sheet.

Actual field operations are summarized as follows:

• Geological field survey and sampling of rock specimens.
• Geomorphological field survey and sampling of sediments.
• Sampling of rock specimens for paleomagnetic studies.
• Gravity and geomagnetic measurements.
• Seismic experiment and accompanied geodetic observation and drilling.