Exposed Ashfield Shale of the Wianamatta group, near the Pacific Highway, Chatswood, Australia
Type
Geological formation
Unit of
Wiannamatta group
Sub-units
Kellyville Laminite Member, Mulgoa Laminite Member, Regentville Siltstone Member, Rouse Hill Siltstone Member
Overlies
Mittagong Formation
Thickness
up to 64 metres (210 ft)
Lithology
Primary
Shale
Location
Location
Sydney Basin
Country
Australia
Type section
Named for
Ashfield
Ashfield Shale is part of the Wianamatta group of sedimentary rocks in the Sydney Basin. It lies directly on contemporaneously eroded Hawkesbury sandstone or the Mittagong formation. These rock types were formed in the Triassic Period.[1] It is named after the Sydney suburb of Ashfield. Some of the early research was performed at the old Ashfield Brickworks Quarry. This rock type is often associated with the Inner West and North Shore of the city. However, it has also been recorded at Penrith, Revesby, Bilpin and Mount Irvine.
^Packham, Gordon Howard, ed. (November 1969). The Geology of New South Wales. Sydney: Geological Society of Australia. pp. 417–421.
AshfieldShale is part of the Wianamatta group of sedimentary rocks in the Sydney Basin. It lies directly on contemporaneously eroded Hawkesbury sandstone...
following units (listed in stratigraphic order): Bringelly Shale Minchinbury Sandstone AshfieldShale The Wianamatta Group was derived from the Aboriginal name...
formed sporadic beds of sandstone. The shale is dark when unweathered just like the AshfieldShale. The shale is usually a typical olive-green colour...
and the Sydney basin was situated within a depositional basin. The AshfieldShale, which overlies the Sydney sandstone, indicates an alteration in river...
roof impression found in the AshfieldShale (Late Triassic) of Mortdale, New South Wales, Australia. The AshfieldShale has also yielded a shark species...
1220 mm. Soils are moderately fertile, based on Hawkesbury sandstone and AshfieldShale. The climate is warm and humid. This reserve contains the highest number...
other layers of sedimentary rocks; such as sandstones within AshfieldShale, Bringelly Shale and Garie Formation. Bald Hill Claystone is considered by geologists...
Turpentine-Ironbark Forest, an endangered ecosystem. Soils are based on AshfieldShale and Hawkesbury Sandstone. The word "Wallumatta" is derived from the...
of Balatonites balatonicus zone of Kocaelia zone of Acrochordiceras AshfieldShale (New South Wales, Australia) Cynognathus Assemblage Zone / Burgersdorp...
Reef near Narrabeen, and at sea level around Broken Bay. Sydney Basin AshfieldShale Banks Wall Sandstone Burra-Moko Head Sandstone Caley Formation Mount...
Cosgriff, J. W. (1973). "Notobrachyops picketti, a brachyopid from the AshfieldShale, Wiannamatta Group, New South Wales". Journal of Paleontology. 47 (6):...
units. The Wianamatta Group is made up of Bringelly Shale, Minchinbury Sandstone and AshfieldShale. The most prevalent plant communities in the Sydney...
Club. Soils are moderately fertile, based on Hawkesbury sandstone and AshfieldShale. Most of the reserve is considered part of the Sydney Sandstone Gully...
sandstone, consisting mostly of sandstone, but with some shale, and the overlying AshfieldShale, which supports richer vegetation. There are also a few...
sea level. The site is formed by an intrusion of dolerite rock into AshfieldShale. At least seven different rock types occur in the intrusion. The site...
the rock unit most characteristic of the Shire. Occasional patches of Ashfieldshale overlay the Hawkesbury sandstone. Some time later than the Triassic...
seen as an interval of interbedded fine-grained sandstone and shale between the AshfieldShale (above) and the Hawkesbury sandstone (below). The maximum thickness...
sandstone and shale lie under Sydney. Bringelly Shale and Minchinbury Sandstone are often seen in the greater western parts of Sydney. AshfieldShale is observed...
The discovery, made in 1910, was from a large ironstone nodule within AshfieldShale which contained the nearly complete skeleton. The reconstruction was...
Sydney Blue Gum High Forest. Soils in these forests are derived from AshfieldShale and Hawkesbury Sandstone from the Triassic. In the Fiddens Wharf area...
samoilovichii has also been recorded. Sydney Basin Hawkesbury sandstone AshfieldShale Narrabeen group Garie Formation Bulgo Sandstone "Sydney Basin – Geological...
New South Wales. Soils were suited for agriculture, being based on AshfieldShale. Rainfall is unreliable and erratic, but averages 1210 mm (47 inches)...
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