Denmark Hill Insect Bed

Denmark Hill Insect Bed
Stratigraphic range: Carnian
Type	Geological formation
Unit of	Blackstone Formation
Underlies	Bluff coal seam
Overlies	Aberdare coal seam
Thickness	15 cm (5.9 in)
Lithology
Primary	Shale
Location
Coordinates	27°36′S152°48′E / 27.6°S 152.8°E / -27.6; 152.8
Approximate paleocoordinates	59°00′S105°48′E / 59.0°S 105.8°E / -59.0; 105.8
Region	Ipswich
Country	Australia
Type section
Named for	Denmark Hill
Denmark Hill Insect Bed (Australia) Show map of Australia Denmark Hill Insect Bed (Queensland) Show map of Queensland

The Denmark Hill Insect Bed is a Triassic fossil locality in the Denmark Hill Conservation Park of Ipswich, Queensland, Australia. ^{[1] [2]}

Description

It belongs to the Blackstone Formation (Ipswich Coal Measures Group) dated to the Carnian age (228.0 - 216.5 million years ago). Its coordinates are 27°36′S152°48′E / 27.6°S 152.8°E / -27.6; 152.8 . Its paleogeographic coordinates are 59°00′S105°48′E / 59.0°S 105.8°E / -59.0; 105.8 . ^[3]

The fossiliferous layer is located in between the Bluff coal seam and the Aberdare coal seam. It is 15 cm (5.9 in) thick and is composed greenish grey to brownish grey arenaceous shale. The existence of coal seams above and below the layer indicates that it may have once been a lake (lacustrine environment). ^[3]

The site is noted as a source of well-preserved insect fossils. ^{[1] [4]}

See also

• List of fossil sites
• Chañares Formation, fossiliferous formation of the Ischigualasto-Villa Unión Basin, Argentina
• Ischigualasto Formation, contemporaneous fossiliferous formation of the Ischigualasto-Villa Unión Basin
• Molteno Formation, contemporaneous fossiliferous formation of Lesotho and South Africa
• Pebbly Arkose Formation, contemporaneous fossiliferous formation of Botswana, Zambia and Zimbabwe

References

1. R. J. Tillyard and B. Dunstan (1916). "Mesozoic and Tertiary Insects of Queensland and New South Wales. Descriptions of the fossil Insects and stratigraphical features". Queensland Geological Survey (253): 1–63. Retrieved 11 August 2011.
2. "Denmark Hill Conservation Park". Discover-Our-Ipswich.com. Archived from the original on 31 July 2011. Retrieved 11 August 2011.
3. "Denmark Hill Insect Bed". Paleobiology Database. Retrieved 11 August 2011.
4. E.F. Riek (1967). "On the Occurrence of Fossil Insects in the Mesozoic Rocks of Western Australia". Records of the Australian Museum. 27 (16): 311–312. doi: 10.3853/j.0067-1975.27.1968.450 . ISSN   0067-1975 . Retrieved 11 August 2011.