. Adelaide Geosyncline laid down on Australian Continent , beginning of Adelaide Geosyncline (Delamerian Orogeny) in that continent. 1000 [27] Meso-proterozoic [26] Stenian Narrow highly metamorphic belts due to orogeny as Rodinia formed. Late Ruker / Nimrod Orogeny in Antarctica possibly begins. Musgrave Orogeny (c. 1080 Ma ), Musgrave Block ,