[S-MP25] Supercontinents and Crustal Evolution

[SMP25-P03] Current status and future plan of the geologic study in eastern Dronning Maud Land and Enderby Land, Antarctica

*Tomokazu Hokada^1,2 (1.National Institute of Polar Research, 2.The Graduate University for Advanced Studies (SOKENDAI))

Keywords:Antarctica, Gondwana

Geology programs of the Japanese Antarctic Research Expedition (JARE) have investigated the area of longitude between 10°E and 55°E (eastern Dronning Maud Land and western Enderby Land) of the Antarctic continent since 1957. Total 39 sheets of the geological maps have been published. This part of the Antarctic continent comprises of deep crustal high-grade metamorphic and plutonic rocks. Main part of this area recorded Neoproterozoic-early Cambrian (>600-520 Ma) metamorphic events (central Dronning Maud Land, Sør Rondane Mountains, Yamato-Belgica Complex, Lützow-Holm Complex, Western Rayner Complex). To the east, Archaean-early Palaeoproterozoic (>2550-2480 Ma) UHT metamorphic terrane of the Napier Complex, and Meso-Neoproterozoic (1000-900 Ma) granuliute terranes of the Rayner Complex and the Cape Hinode Block are distributed (e.g., Shiraishi et al., 2008; Dunkley et al., 2020; and references therein).
This presentation summarizes the current status of the geologic studies of this part of Antarctica with their implications to supercontinent evolution, and discuss the future planning of Antarctic field programs expected to start from 2023- seasons.