Higher-plant evolution during the Cretaceous to Palaeogene in the Gippsland Basin, Australia

Research output: Contribution to conferenceAbstractResearch

Abstract

Diverse higher plant-derived biomarkers have been detected in the Upper Cretaceous−Palaeogene Latrobe Group hydrocarbon source rocks in the Gippsland Basin. Interpretation of aliphatic and aromatic sesqui-, di- and triterpenoids indicates that gymnosperms (e.g. Araucariaceae and Podocarpaceae) contributed more organic matter than angiosperms (e.g. Nothofagus, Ilex and Proteaceae) to the Upper Cretaceous palaeofloras in the Gippsland Basin. However, angiosperms gradually began to dominate the Palaeogene rainforests, especially with Nothofagus, Proteaceae and Euphorbiaceae. Analyses of the oleanane index and various AGIs, combined with previous studies, enables the inference that the palaeoclimate changed from warming to relative cooling and then back to warming again, over the time period from the T. lilliei biozone to the P. asperopolus biozone. This is consistent with palynological evidence and estimates of sea-surface temperature changes recorded in the Gippsland Basin (Wagstaff et al., 2006; Macphail, 2007).

Conference

ConferenceInternational Meeting on Organic Geochemistry (29th : 2019)
Abbreviated titleIMOG 2019
CountrySweden
CityGothenburg
Period1/09/196/09/19
Internet address

Fingerprint

Paleogene
Cretaceous
angiosperm
warming
basin
gymnosperm
paleoclimate
rainforest
source rock
biomarker
sea surface temperature
hydrocarbon
cooling
organic matter
index

Cite this

Jiang, L. ; George, S. C. / Higher-plant evolution during the Cretaceous to Palaeogene in the Gippsland Basin, Australia. Abstract from International Meeting on Organic Geochemistry (29th : 2019), Gothenburg, Sweden.2 p.
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title = "Higher-plant evolution during the Cretaceous to Palaeogene in the Gippsland Basin, Australia",
abstract = "Diverse higher plant-derived biomarkers have been detected in the Upper Cretaceous−Palaeogene Latrobe Group hydrocarbon source rocks in the Gippsland Basin. Interpretation of aliphatic and aromatic sesqui-, di- and triterpenoids indicates that gymnosperms (e.g. Araucariaceae and Podocarpaceae) contributed more organic matter than angiosperms (e.g. Nothofagus, Ilex and Proteaceae) to the Upper Cretaceous palaeofloras in the Gippsland Basin. However, angiosperms gradually began to dominate the Palaeogene rainforests, especially with Nothofagus, Proteaceae and Euphorbiaceae. Analyses of the oleanane index and various AGIs, combined with previous studies, enables the inference that the palaeoclimate changed from warming to relative cooling and then back to warming again, over the time period from the T. lilliei biozone to the P. asperopolus biozone. This is consistent with palynological evidence and estimates of sea-surface temperature changes recorded in the Gippsland Basin (Wagstaff et al., 2006; Macphail, 2007).",
author = "L. Jiang and George, {S. C.}",
year = "2019",
month = "9",
day = "2",
doi = "10.3997/2214-4609.201902799",
language = "English",
note = "International Meeting on Organic Geochemistry (29th : 2019), IMOG 2019 ; Conference date: 01-09-2019 Through 06-09-2019",
url = "https://www.imog.eaog.org/",

}

Jiang, L & George, SC 2019, 'Higher-plant evolution during the Cretaceous to Palaeogene in the Gippsland Basin, Australia' International Meeting on Organic Geochemistry (29th : 2019), Gothenburg, Sweden, 1/09/19 - 6/09/19, . https://doi.org/10.3997/2214-4609.201902799

Higher-plant evolution during the Cretaceous to Palaeogene in the Gippsland Basin, Australia. / Jiang, L.; George, S. C.

2019. Abstract from International Meeting on Organic Geochemistry (29th : 2019), Gothenburg, Sweden.

Research output: Contribution to conferenceAbstractResearch

TY - CONF

T1 - Higher-plant evolution during the Cretaceous to Palaeogene in the Gippsland Basin, Australia

AU - Jiang, L.

AU - George, S. C.

PY - 2019/9/2

Y1 - 2019/9/2

N2 - Diverse higher plant-derived biomarkers have been detected in the Upper Cretaceous−Palaeogene Latrobe Group hydrocarbon source rocks in the Gippsland Basin. Interpretation of aliphatic and aromatic sesqui-, di- and triterpenoids indicates that gymnosperms (e.g. Araucariaceae and Podocarpaceae) contributed more organic matter than angiosperms (e.g. Nothofagus, Ilex and Proteaceae) to the Upper Cretaceous palaeofloras in the Gippsland Basin. However, angiosperms gradually began to dominate the Palaeogene rainforests, especially with Nothofagus, Proteaceae and Euphorbiaceae. Analyses of the oleanane index and various AGIs, combined with previous studies, enables the inference that the palaeoclimate changed from warming to relative cooling and then back to warming again, over the time period from the T. lilliei biozone to the P. asperopolus biozone. This is consistent with palynological evidence and estimates of sea-surface temperature changes recorded in the Gippsland Basin (Wagstaff et al., 2006; Macphail, 2007).

AB - Diverse higher plant-derived biomarkers have been detected in the Upper Cretaceous−Palaeogene Latrobe Group hydrocarbon source rocks in the Gippsland Basin. Interpretation of aliphatic and aromatic sesqui-, di- and triterpenoids indicates that gymnosperms (e.g. Araucariaceae and Podocarpaceae) contributed more organic matter than angiosperms (e.g. Nothofagus, Ilex and Proteaceae) to the Upper Cretaceous palaeofloras in the Gippsland Basin. However, angiosperms gradually began to dominate the Palaeogene rainforests, especially with Nothofagus, Proteaceae and Euphorbiaceae. Analyses of the oleanane index and various AGIs, combined with previous studies, enables the inference that the palaeoclimate changed from warming to relative cooling and then back to warming again, over the time period from the T. lilliei biozone to the P. asperopolus biozone. This is consistent with palynological evidence and estimates of sea-surface temperature changes recorded in the Gippsland Basin (Wagstaff et al., 2006; Macphail, 2007).

UR - https://www.imog.eaog.org/technical-programme

U2 - 10.3997/2214-4609.201902799

DO - 10.3997/2214-4609.201902799

M3 - Abstract

ER -

Jiang L, George SC. Higher-plant evolution during the Cretaceous to Palaeogene in the Gippsland Basin, Australia. 2019. Abstract from International Meeting on Organic Geochemistry (29th : 2019), Gothenburg, Sweden. https://doi.org/10.3997/2214-4609.201902799