Multiepisodic evaporite sedimentation as an indicator of palaeogeographical evolution in foreland basins (South-eastern Pyrenean basin, Early-Middle Eocene)

Sedimentology ◽  
2014 ◽  
Vol 61 (7) ◽  
pp. 2086-2112 ◽  
Author(s):  
Emili Carrillo ◽  
Laura Rosell ◽  
Federico Ortí
Keyword(s):  
Middle Eocene ◽  
Foreland Basins ◽  
South Eastern

Falcatifolium (Podocarpaceae) macrofossils from paleogene sediments in south-eastern Australia: a reassessment

1998 ◽  
Vol 11 (6) ◽  
pp. 711 ◽  
Author(s):  
Robert S. Hill ◽  
Leonie J. Scriven
Keyword(s):  
Leaf Morphology ◽  
Middle Eocene ◽  
Late Eocene ◽  
South Eastern ◽  
Early Oligocene ◽  
Extant Species ◽  
Eastern Australia ◽  
South Eastern Australia

A re-investigation of macrofossils previously referred to the extantpodocarpaceous genus Falcatifolium Laubenfels shows thatno records can be sustained. Falcatifolium australisD.R.Greenwood from Middle Eocene sediments in Victoria bears littleresemblance to extant species in the genus and is transferred to the newfossil genus Sigmaphyllum R.S.Hill & L.J.Scriven.Specimens from Early Oligocene sediments in Tasmania previously assigned toFalcatifolium are described as a second species ofSigmaphyllum, S. tasmanensisR.S.Hill & L.J.Scriven, and specimens from mid to late Eocene sediments inTasmania previously assigned to Falcatifolium do notbelong to that genus, although their true generic affinities are uncertain.Dispersed cuticle specimens from Late Eocene–Oligocene sediments inSouth Australia referred to Falcatifolium are notreliable records of the genus and require further investigation. However,Dacrycarpus eocenica D.R.Greenwood, from Middle Eocenesediments in Victoria is transferred to Falcatifolium,and is similar to the extant species F. angustumLaubenfels, which has a leaf morphology unusual for the genus.Falcatifolium eocenica (D.R.Greenwood) R.S.Hill & L.J.Scriven is the only reliable record of the genus in the Australian fossilrecord to date.

Tectonic and sediment provenance evolution of the South Eastern Pyrenean foreland basins during rift margin inversion and orogenic uplift

2019 ◽  
Vol 765 ◽  
pp. 226-248 ◽  
Author(s):  
M.L. Odlum ◽  
D.F. Stockli ◽  
T.N. Capaldi ◽  
K.D. Thomson ◽  
J. Clark ◽  
...  
Keyword(s):  
Sediment Provenance ◽  
Foreland Basins ◽  
The South ◽  
South Eastern ◽  
Orogenic Uplift ◽  
Provenance Evolution

scholarly journals Eocene monsoon forests in central Australia?

1996 ◽  
Vol 9 (2) ◽  
pp. 95 ◽  
Author(s):  
DR Greenwood
Keyword(s):  
Plant Communities ◽  
Fossil Record ◽  
Deciduous Forest ◽  
Middle Eocene ◽  
South Australia ◽  
South Eastern ◽  
Early Tertiary ◽  
Late Tertiary ◽  
Eastern Australia ◽  
Monsoon Forests

The Australian Tertiary plant fossil record documents rainforests of a tropical to temperate character in south-eastern and south-western Australia for much of the Early Tertiary, and also shows the climatically mediated contraction of these rainforests in the mid to Late Tertiary. The fossil record of Australian monsoon forests, that is semi-evergreen to deciduous vine forests and woodlands of the wet-dry tropics, however, is poorly known. Phytogeographic analyses have suggested an immigrant origin for some floral elements of present day monsoon forests in northern Australia, while other elements appear to have a common history with the tropical rainforests sensu stricto and/or the sclerophyllous flora. Early Tertiary macrofloras in northern South Australia may provide some insight into the origins of Australian tropical monsoon forests. The Middle Eocene macrofloras of the Poole Creek palaeochannel, and the ?Eocene-Oligocene silcrete macrofloras of Stuart Creek, both in the vicinity of modern Lake Eyre South, have foliar physiognomic characteristics which distinguish them from both modern rainforest and Eocene-Oligocene floras from south-eastern Australia. Preliminary systematic work on these floras suggests the presence of: (1) elements not associated today with monsoon forests (principally 'rainforest' elements, e.g. Gymnostoma, cf. Lophostemon, cf. Athertonia, Podocarpaceae, ?Cunoniaceae); (2) elements typical of both monsoon forests and other tropical plant communities (e.g. cf. Eucalyptus, cf. Syzygium, and Elaeocarpaceae); (3) elements likely to be reflecting sclerophyllous communities (e.g. cf. Eucalyptus, Banksieae and other Proteaceae); and (4) elements more typically associated with, but not restricted to, monsoon forests (e.g. Brachychiton). The foliar physiognomic and floristic evidence is interpreted as indicating a mosaic of gallery or riverine rainforests, and interfluve sclerophyllous plant communities near Lake Eyre in the Early Tertiary; deciduous forest components are not clearly indicated. Palaeoclimatic analysis of the Eocene Poole Creek floras suggests that rainfall was seasonal in the Lake Eyre area in the Eocene; however, whether this seasonality reflects a monsoonal airflow is not clear.

Two new species of Dacrydium (Podocarpaceae) based on vegetative fossils from middle eocene sediments at Nelly Creek, South Australia

2001 ◽  
Vol 14 (2) ◽  
pp. 193 ◽  
Author(s):  
Robert S. Hill ◽  
David C. Christophel
Keyword(s):  
New Species ◽  
Water Availability ◽  
Middle Eocene ◽  
South Australia ◽  
South Eastern ◽  
Early Oligocene ◽  
Eastern Australia ◽  
Two New Species ◽  
Central Australia ◽  
South Eastern Australia

Two new macrofossil species of Dacrydium (Podocarpaceae), D. fimbriatus (with dimorphic foliage) and D. mucronatus, are described from Middle Eocene sediments at Nelly Creek just south of Lake Eyre South. These species extend the number of Dacrydium macrofossil species from four to six, the macrofossil range from south-eastern to central Australia and the earliest macrofossil record of the genus from the Early Oligocene to Middle Eocene. On the basis of the low numbers and poor development of epiphyllous germlings, these species were probably growing in a region where water availability was reduced compared with Paleogene sites in south-eastern Australia, but the morphology of the foliage does not reflect that.

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