Wordian (Middle Permian) U-Pb CA-IDTIMS isotopic ages from the Lightjack Formation, Canning Basin, Western Australia

Arthur J Mory; Jim Crowley; Robert S Nicoll; Ian Metcalfe; Daniel Mantle; Roland Mundil; John Backhouse

Abstract

Coal exploration coreholes in the Permian of the Fitzroy Trough (Canning Basin, Western Australia) have intersected thin (<15 cm) ash-fall tuffs in seams from the 30-300-m thick Lightjack Formation. Four of these tuffs within the 'Didecitriletes ericianus' spore-pollen zone have yielded high-precision U-Pb zircon CA-IDTIMS ages of 268.63-270.14 Ma, consistent with a Wordian age. The formation is dominated by siltstone and sandstone, with minor coal and fossiliferous beds near the base, and extends along the major depocentre of the basin (Fitzroy Trough - Gregory Sub-basin), and its margins. The unit spans the Roadian-Wordian-Capitanian based on ammonoids ('Daubichites goochi' and 'Bamyaniceras australe'), brachiopods ('Neochonites ('Sommeriella') afanasyevae' zone), and palynomorphs ('Dulhuntyispora granulata' to 'D. parvithola' zones). Rare conodont genera from the formation include 'Vjalovognathus', 'Mesogondolella' and 'Hindeodus'.

Original language	English
Pages	3386-3386
Publication status	Published - 2012
Event	IGC 2012: 34th International Geological Congress: Unearthing our Past and Future - Resourcing Tomorrow - Brisbane, Australia Duration: 5 Aug 2012 → 10 Aug 2012

Conference

Conference	IGC 2012: 34th International Geological Congress: Unearthing our Past and Future - Resourcing Tomorrow
City	Brisbane, Australia
Period	5/08/12 → 10/08/12

Keywords

Geochronology
Stratigraphy (incl Biostratigraphy and Sequence Stratigraphy)

Access to Document

https://hdl.handle.net/1959.11/11275

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Persistent link

Cite this

Mory, A. J., Crowley, J., Nicoll, R. S., Metcalfe, I., Mantle, D., Mundil, R., & Backhouse, J. (2012). Wordian (Middle Permian) U-Pb CA-IDTIMS isotopic ages from the Lightjack Formation, Canning Basin, Western Australia. 3386-3386. Abstract from IGC 2012: 34th International Geological Congress: Unearthing our Past and Future - Resourcing Tomorrow, Brisbane, Australia. https://hdl.handle.net/1959.11/11275

@conference{b98d9e01053f443ab5a4f2b8da82379f,

title = "Wordian (Middle Permian) U-Pb CA-IDTIMS isotopic ages from the Lightjack Formation, Canning Basin, Western Australia",

abstract = "Coal exploration coreholes in the Permian of the Fitzroy Trough (Canning Basin, Western Australia) have intersected thin (<15 cm) ash-fall tuffs in seams from the 30-300-m thick Lightjack Formation. Four of these tuffs within the 'Didecitriletes ericianus' spore-pollen zone have yielded high-precision U-Pb zircon CA-IDTIMS ages of 268.63-270.14 Ma, consistent with a Wordian age. The formation is dominated by siltstone and sandstone, with minor coal and fossiliferous beds near the base, and extends along the major depocentre of the basin (Fitzroy Trough - Gregory Sub-basin), and its margins. The unit spans the Roadian-Wordian-Capitanian based on ammonoids ('Daubichites goochi' and 'Bamyaniceras australe'), brachiopods ('Neochonites ('Sommeriella') afanasyevae' zone), and palynomorphs ('Dulhuntyispora granulata' to 'D. parvithola' zones). Rare conodont genera from the formation include 'Vjalovognathus', 'Mesogondolella' and 'Hindeodus'.",

keywords = "Geochronology, Stratigraphy (incl Biostratigraphy and Sequence Stratigraphy)",

author = "Mory, \{Arthur J\} and Jim Crowley and Nicoll, \{Robert S\} and Ian Metcalfe and Daniel Mantle and Roland Mundil and John Backhouse",

year = "2012",

language = "English",

pages = "3386--3386",

note = "IGC 2012: 34th International Geological Congress: Unearthing our Past and Future - Resourcing Tomorrow ; Conference date: 05-08-2012 Through 10-08-2012",

}

Mory, AJ, Crowley, J, Nicoll, RS, Metcalfe, I, Mantle, D, Mundil, R & Backhouse, J 2012, 'Wordian (Middle Permian) U-Pb CA-IDTIMS isotopic ages from the Lightjack Formation, Canning Basin, Western Australia', IGC 2012: 34th International Geological Congress: Unearthing our Past and Future - Resourcing Tomorrow, Brisbane, Australia, 5/08/12 - 10/08/12 pp. 3386-3386. <https://hdl.handle.net/1959.11/11275>

Wordian (Middle Permian) U-Pb CA-IDTIMS isotopic ages from the Lightjack Formation, Canning Basin, Western Australia. / Mory, Arthur J; Crowley, Jim; Nicoll, Robert S et al.
2012. 3386-3386 Abstract from IGC 2012: 34th International Geological Congress: Unearthing our Past and Future - Resourcing Tomorrow, Brisbane, Australia.

Research output: Contribution to conference › Abstract

TY - CONF

T1 - Wordian (Middle Permian) U-Pb CA-IDTIMS isotopic ages from the Lightjack Formation, Canning Basin, Western Australia

AU - Mory, Arthur J

AU - Crowley, Jim

AU - Nicoll, Robert S

AU - Metcalfe, Ian

AU - Mantle, Daniel

AU - Mundil, Roland

AU - Backhouse, John

PY - 2012

Y1 - 2012

N2 - Coal exploration coreholes in the Permian of the Fitzroy Trough (Canning Basin, Western Australia) have intersected thin (<15 cm) ash-fall tuffs in seams from the 30-300-m thick Lightjack Formation. Four of these tuffs within the 'Didecitriletes ericianus' spore-pollen zone have yielded high-precision U-Pb zircon CA-IDTIMS ages of 268.63-270.14 Ma, consistent with a Wordian age. The formation is dominated by siltstone and sandstone, with minor coal and fossiliferous beds near the base, and extends along the major depocentre of the basin (Fitzroy Trough - Gregory Sub-basin), and its margins. The unit spans the Roadian-Wordian-Capitanian based on ammonoids ('Daubichites goochi' and 'Bamyaniceras australe'), brachiopods ('Neochonites ('Sommeriella') afanasyevae' zone), and palynomorphs ('Dulhuntyispora granulata' to 'D. parvithola' zones). Rare conodont genera from the formation include 'Vjalovognathus', 'Mesogondolella' and 'Hindeodus'.

AB - Coal exploration coreholes in the Permian of the Fitzroy Trough (Canning Basin, Western Australia) have intersected thin (<15 cm) ash-fall tuffs in seams from the 30-300-m thick Lightjack Formation. Four of these tuffs within the 'Didecitriletes ericianus' spore-pollen zone have yielded high-precision U-Pb zircon CA-IDTIMS ages of 268.63-270.14 Ma, consistent with a Wordian age. The formation is dominated by siltstone and sandstone, with minor coal and fossiliferous beds near the base, and extends along the major depocentre of the basin (Fitzroy Trough - Gregory Sub-basin), and its margins. The unit spans the Roadian-Wordian-Capitanian based on ammonoids ('Daubichites goochi' and 'Bamyaniceras australe'), brachiopods ('Neochonites ('Sommeriella') afanasyevae' zone), and palynomorphs ('Dulhuntyispora granulata' to 'D. parvithola' zones). Rare conodont genera from the formation include 'Vjalovognathus', 'Mesogondolella' and 'Hindeodus'.

KW - Geochronology

KW - Stratigraphy (incl Biostratigraphy and Sequence Stratigraphy)

UR - http://trove.nla.gov.au/work/170160251

M3 - Abstract

SP - 3386

EP - 3386

T2 - IGC 2012: 34th International Geological Congress: Unearthing our Past and Future - Resourcing Tomorrow

Y2 - 5 August 2012 through 10 August 2012

ER -