The Neranleigh-Fernvale beds is a
geologic formation in the north east of
New South Wales and
Queensland,
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
. This formation was created in the
Late Devonian
The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, wher ...
to the
Early Carboniferous, of a thickness up to .
Description
This formation contains a
heterogeneous
Homogeneity and heterogeneity are concepts often used in the sciences and statistics relating to the uniformity of a substance or organism. A material or image that is homogeneous is uniform in composition or character (i.e. color, shape, siz ...
succession of
sandstone. Either derived from
volcanic action, or locally
oolitic. Other constituents include
siltstone
Siltstone, also known as aleurolite, is a clastic sedimentary rock that is composed mostly of silt. It is a form of mudrock with a low clay mineral content, which can be distinguished from shale by its lack of fissility.Blatt ''et al.'' 1980, p ...
,
chert and minor
mafic volcanics including pillow basalt.
Conglomerate
Conglomerate or conglomeration may refer to:
* Conglomerate (company)
* Conglomerate (geology)
* Conglomerate (mathematics)
In popular culture:
* The Conglomerate (American group), a production crew and musical group founded by Busta Rhymes
** Co ...
and
jasper, with low
metamorphosed greenschist are also present.
Basaltic volcanics are
interbedded with the Neranleigh-Fernvale sediments. Fossils are rarely encountered.
[Henley, H.F., Brown, R.E., Brownlow, J.W., Barnes, R.G., Stroud, W.J., 2001, Grafton-Maclean 1:250 000 Metallogenic Map SH56-6, 7, Geological Survey of New South Wales, Sydney, Map, Map Legend]
See also
*
Clarence-Moreton Basin
The Clarence Moreton Basin is a Mesozoic sedimentary basin on the easternmost part of the Australian continent. It is located in the far north east of the state of New South Wales around Lismore and Grafton and in the south east corner of Qu ...
References
Geologic formations of Australia
Carboniferous System of Australia
Devonian System of Australia
Carboniferous volcanism
Sandstone formations
Siltstone formations
Conglomerate formations
Geology of New South Wales
Geology of Queensland
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