Figure F7. Changes through time in the Tasmanian Gateway region as Australia and Antarctica separated. The changes contributed to Antarctic glaciation and thermohaline oceanic circulation (TOC). Maps after Exon et al. (2002) and based on Cande et al. (2000). A. 43.7 Ma (middle Eocene). B. 33 Ma (Eocene/Oligocene boundary. C. 26 Ma (early Oligocene). AAG = Australo-Antarctic Gulf, TLB = Tasmanian land bridge, PP = proto-Pacific Ocean, EAC = Eastern Australian Current, N.Z. = New Zealand. (Figure shown on next page.)

Figure F7. Changes through time in the Tasmanian Gateway region as Australia and Antarctica separated. The changes contributed to Antarctic glaciation and thermohaline oceanic circulation (TOC). Maps after Exon et al. (2002) and based on Cande et al. (2000). A. 43.7 Ma (middle Eocene). B. 33 Ma (Eocene/Oligocene boundary. C. 26 Ma (early Oligocene). AAG = Australo-Antarctic Gulf, TLB = Tasmanian land bridge, PP = proto-Pacific Ocean, EAC = Eastern Australian Current, N.Z. = New Zealand.