OFR 151.pdf - CRC LEME
OFR 151.pdf - CRC LEME OFR 151.pdf - CRC LEME
Inferred climate The Regatta Point data are compelling evidence that very warm (upper mesotherm) conditions persisted within Macquarie Harbour into late Early Eocene time. Explanations include warm oceanic currents flowing southward down the West Coast of Tasmania or (preferred) that water temperatures within Macquarie Harbour remained atypically warm. Conditions on the East Coast of Tasmania appear to have been cooler (lower mesotherm) during the Early Eocene. Climates overall appear to have been wet to very wet (perhumid) but the paucity of cryptogams and variable representation of Nothofagus between Buckland and Deloraine may indicate that summers were relatively dry (weakly seasonal) in the south-east. 2.3 Other Records 2.3.1 North-East Australia 1. North-east Queensland Feary et al. (1991) have estimated SSTs off the north-east coast of Queensland during the early Early Eocene were up to 16.0-18.0 0 C (lower mesotherm range). 2. South-east Queensland Skeletal remains of arboreal fructivores, frogs, snakes, a possible freshwater crocodile and turtles (Tingamarra Local Fauna) are preserved below an early Early Eocene (54 Ma) basalt near Murgon in southeastern Queensland (Godthelp et al. 1992). Archer et al. (1994) suggest the climate was mild to warm (mesotherm range) throughout the year. 2.3.2 South-West Australia 1. Carnarvon Basin Foram and lithostratigraphic evidence indicate a cooling in oceanic temperatures and increased continental run-off during the Early Eocene. The latter implies increasing wet (possibly humid) conditions in the northern Carnarvon Basin (Apthorpe 1988). 2.3.3 South-East Australia 1. Otway and Gippsland Basins Episodic excursions of dinoflagellates belonging to the warmer water Wetzelielliodeae group indicate sea surface temperatures were generally warmer during the Early Eocene than during the Paleocene or Middle Eocene (Partridge 1976, A.D. Partridge pers. comm.). 223
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- Page 174 and 175: 2. Officer Basin Dinoflagellates in
- Page 176 and 177: 2. TIME SLICE K-2 Age Range: Aptian
- Page 178 and 179: Inferred climate The combined data
- Page 180 and 181: Dettmann et al. (1992) have argued
- Page 182 and 183: 3. TIME SLICE K-3 Age Range: Cenoma
- Page 184 and 185: 3.2.2 North-East Australia 1. Carpe
- Page 186 and 187: 4. TIME SLICE K-4 Age Range: Turoni
- Page 188 and 189: 1. Otway Basin Limited data (Macpha
- Page 190 and 191: 5. TIME SLICE K-5 Age Range: Early
- Page 192 and 193: Inferred climate The data indicate
- Page 194 and 195: 6. TIME SLICE K-6 Age Range: Late C
- Page 196 and 197: Contrary to global cooling trends d
- Page 198 and 199: Inferred climate The relatively goo
- Page 200 and 201: Inferred climate As for regions to
- Page 202 and 203: APPENDIX 2 TERTIARY DATA 201
- Page 204 and 205: 1. TIME SLICE T-1 Age Range: Paleoc
- Page 206 and 207: also include relatively frequent No
- Page 208 and 209: Inferred climate Some differences b
- Page 210 and 211: Microfloras preserved in the Lower
- Page 212 and 213: subtropical affinities are rare, hi
- Page 214 and 215: 2. TIME SLICE T-2 Age Range: Early
- Page 216 and 217: Inferred climate Climates appear to
- Page 218 and 219: northern New South Wales. The assem
- Page 220 and 221: 2.2.5 Central southern Australia Ha
- Page 222 and 223: a number of distinctive Proteaceae
- Page 226 and 227: 3. TIME SLICE T-3 Age Range: Middle
- Page 228 and 229: 2. Lake Torrens Basin Abundant leaf
- Page 230 and 231: Dominance is highly variable. For e
- Page 232 and 233: types (M.K. Macphail unpubl. data).
- Page 234 and 235: Dacrycarpus), Euphorbiaceae (Austro
- Page 236 and 237: (possibly upper mesotherm) and drie
- Page 238 and 239: Basin) on the Eyre Peninsula (Alley
- Page 240 and 241: explanation is that a warm water gy
- Page 242 and 243: several taxa, which first appear in
- Page 244 and 245: 4. TIME SLICE T-4 Age Range: Oligoc
- Page 246 and 247: Inferred climate The southern limit
- Page 248 and 249: The lowest and possibly the oldest
- Page 250 and 251: Dominants include fresh to brackish
- Page 252 and 253: Based on the relative abundance of
- Page 254 and 255: (Morgan 1977, McMinn 1981a, Martin
- Page 256 and 257: common (up to 5-6%) in the middle s
- Page 258 and 259: Polypodiaceae, Palmae (Dicolpopolli
- Page 260 and 261: Strasburgeriaceae. Proprietary info
- Page 262 and 263: Rare taxa which first appear in the
- Page 264 and 265: Correlative microfloras in the onsh
- Page 266 and 267: impression of floristic impoverishm
- Page 268 and 269: (Lophosoria) reached Tasmania befor
- Page 270 and 271: 2. Otway Basin Oxygen isotope strat
- Page 272 and 273: 5. TIME SLICE T-5 Age Range: Late M
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