Blackstone Formation, Australia

The Blackstone Formation is a geologic formation of the Ipswich Coal Measures Group in southeastern Queensland, Australia, dating to the Carnian to Norian stages of the Late Triassic. The shales, siltstones, coal and tuffs were deposited in a lacustrine environment. The Blackstone Formation contains the Denmark Hill Insect Bed.

Blackstone Formation Stratigraphic range: Carnian-Norian ~235–206 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Unit of	Ipswich Coal Measures
Sub-units	Denmark Hill Insect Bed, Striped Bacon Seam Member
Underlies	Unconformity with Raceview Formation and Aberdare Conglomerate
Overlies	Tivoli Formation
Thickness	200–240 m (660–790 ft)
Lithology
Primary	Shale
Other	Siltstone, coal, tuff
Location
Coordinates	27.6°S 152.8°E
Approximate paleocoordinates	58.6°S 101.0°E
Region	Ipswich
Country	Australia
Type section
Named for	Blackstone, Queensland
Blackstone Formation, Australia (Australia) Blackstone Formation, Australia (Queensland)

Fossil content

Vertebrates

Lungfish

Dipnoans of the Blackstone Formation
Genus	Species	State	Abundance	Notes	Images
Ceratodus	C. robustus

Invertebrates

Insects of the Blackstone Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Mesochorista[1]	M. proavita	Ipswich			A Permochoionid
Mesodiphthera	M. grandis				Tettigarctid cicada
Tardilly	T. dunstani
	T. prosboloides
Phanerogramma	P. australis				Dermapterid earwig
Dinmopsylla	D. semota	Dinmore clay pit			Archipsyllid Permopsocid
Mesopsyche	M. triareolata	Dinmore clay pit			Mesopsychid mecopteran

Ichnofossils

• Eubrontes cf. giganteus[2]

See also

• List of fossil sites

References

1. E.F. Riek (1955). "A Re-examination of the Mecopteroid and Orthopteroid Fossils (Insecta) from the Triassic Beds at Denmark Hill, Queensland, with Descriptions of Further Specimens" (PDF). Australian Journal of Zoology. 4: 98–110. Retrieved 11 August 2011.
2. Staines & Woods, 1964

Bibliography

• Staines, H. R. E., and J. T. Woods. 1964. Recent discovery of Triassic dinosaur footprints in Queensland. The Australian Journal of Science 27. 1–55.