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Dewrang Group STRATNO: 24917
Current: Yes Rank: Group, Suite Status: Formal State(s): NSW
Category: Unknown or process pending Usage: Defined Definition Card: No
Originator: Entry date: 01-JAN-88Last Update: 08-FEB-17
Replaced by: Previously known as: Dewrang Formation
Description:
Comments: Of the Gloucester Basin (New England Fold Belt).
Geological province: Gloucester Basin
Type state: Reference section type:
Maximum thickness: 580mMinimum thickness:
Unit Age
Top of unit -
Minimum age: Guadalupian Ma: % from base of biozone: Age method:
Maximum age: Ma: % from base of biozone: Age method:
Base of unit -
Minimum age: Ma: % from base of biozone: Age method:
Maximum age: Cisuralian Ma: % from base of biozone: Age method:

Stratigraphic Hierarchy (current units only) Rank Status

Chemical Hierarchy (current units only) Rank Status


Related units: Relationship: Contact Type:
Alum Mountain Volcanics underlies Dewrang Group disconformity
Bucketts rhyolites"" underlies Dewrang Group disconformity
First Reference:
REFID: 40872 Helby, R., Lennox, M., Roberts, J., 1986, The age of the Permian sequence in the Stroud-Gloucester Trough., Royal Society of New South Wales. Journal and Proceedings, 119(1/2), p33-42

Definition Reference:
REFID: 44244 Roberts, J., Engel, B., Chapman, J., 1991, Geology of the Camberwell, Dungog, and Bulahdelah 1:100 000 sheets 9133, 9233, 9333., Geological Survey of New South Wales, 1v, 382pp

Use on maps:
REFID: 50147 Roberts, J., Engel, B., Lennox, M., Chapman, J., 1991, Dungog, New South Wales 1:100 000 Geological Sheet 9233, Geological Survey of New South Wales. 1:100,000 geological sheet series, 1v, Map


Full Bibliographic Details (ordered by usage, publication year)

REFID: 44244 Roberts, J. , Engel, B. , Chapman, J. 1991 Geology of the Camberwell, Dungog, and Bulahdelah 1:100 000 sheets 9133, 9233, 9333. Geological Survey of New South Wales 1v 382pp
Usage: Defined (p169, p168 Tb.2) Min age from reference: Late Permian Max age from reference: Late Permian Comments: Includes Mammy Johnsons, Weismantels, Durallie Road Formations. Disconformably overlies the Alum Mountain Volcanics. Max. thickness: 580m. Geological Province: Myall Block.
REFID: 64631 Fielding, C.R. , Frank, T.D. , Birgenheier, L.P. , Rygel, M.C. , Jones, A.T. , Roberts, J. 2008 Stratigraphic record and facies associations of the late Paleozoic ice age in eastern Australia (New South Wales and Queensland). IN 'Resolving the late Paleozoic ice age in time and space' C.R. Fielding, T.D.Frank, J.L. Isbell Geological Socety of America Special Paper 441 41-58
Usage: Briefly described (p44 Fig.2.) Min age from reference: Roadian Max age from reference: Kungurian Comments: Southern New England Fold Belt, Myall Block. Biostratigraphic age control for base and top. , Is overlain by Gloucester Coal Measures.
REFID: 23623 Ward, C.R. , Bocking, M. , Ruan, C. 2001 Mineralogical analysis of coals as an aid to seam correlation in the Gloucester Basin, New South Wales, Australia International Journal of Coal Geology 47(1) p31-49
Usage: Briefly described (p33 Fig. 2) Min age from reference: Late Permian Max age from reference: Late Permian Comments: Includes the Mammy Johnsons, Weismantels and Durrallie Formations. Geological Province: New England Fold Belt
REFID: 22857 Scheibner, E. , Basden, H. (ed.) 1998 Geology of New South Wales - Synthesis. Volume 2 Geological Evolution. Geological Survey of New South Wales. Memoir (Geology) 13(2) 666pp
Usage: Briefly described (p263, p534 App.1 Tb.A1.9) Min age from reference: Early Triassic Max age from reference: Late Permian Comments: Comprises Mammy Johnsons, Weismantels and Durallie Road Formations. In the Stroud-Gloucester Syncline.
REFID: 42833 Jenkins, R.B. , Nethery, J.E. 1992 The development of Early Permian sequences and hydrothermal alteration in the Myall Syncline, central eastern New South Wales. Australian Journal of Earth Sciences 39(2) p223-237
Usage: Briefly described (p227) Comments:
REFID: 50147 Roberts, J. , Engel, B. , Lennox, M. , Chapman, J. 1991 Dungog, New South Wales 1:100 000 Geological Sheet 9233 Geological Survey of New South Wales. 1:100,000 geological sheet series 1v Map
Usage: Briefly described (Map legend) Min age from reference: Late Permian Max age from reference: Late Permian Comments: Geological Province: Western Myall Block.
REFID: 42182 McElroy, C.T. , Rose, G. 1990 Historical review of coal geology in New South Wales. IN Glasson K.R., Rattigan J.H. (eds.)- Geological aspects of the discovery of some important mineral deposits in Australia. AusIMM. Monograph Series 17 p245-316
Usage: Briefly described (p301) Comments: Overlain by Gloucester Coal Measures. Geological Province: Gloucester Basin.
REFID: 41054 McMinn, A. 1987 Palynostratigraphy of the Stroud Gloucester Trough, N.S.W. Alcheringa 11(2) p151-164
Usage: Briefly described (p152) Comments:
REFID: 63832 Fielding, C.R. , Frank, T.D. , Birgenheier, L.P. , Rygel, M.C. , Jones, A.T. , Roberts, J. 2008 Stratigraphic imprint of the Late Palaeozoic Ice Age in eastern Australia: a record of alternating glacial and nonglacial climate regime Geological Society of London. Journal 165 p129-140
Usage: Mentioned (p131 fig 2) Min age from reference: Guadalupian Max age from reference: Cisuralian Comments: Myall block, Southern New England Fold Belt. Seventh (P3) glaciation.
REFID: 50099 Sutherland, L. , Graham, I. 2003 Geology of Barrington Tops Plateau: Its Rocks, Minerals and Gemstones, New South Wales, Australia The Australian Museum Society 1v 56p
Usage: Mentioned (p13) Min age from reference: Late Permian Max age from reference: Late Permian Comments: Overlies the "Bucketts rhyolites" disconformably.
REFID: 22864 Scheibner, E. , Basden, H. (ed.) 1998 Part 6(19). Early Permian-Middle Triassic. In: Geology of New South Wales - Synthesis. Geological Survey of New South Wales. Memoir (Geology) 13(2) p251-271
Usage: Mentioned (p263) Comments:
REFID: 22601 Roberts, J. , Claoue-Long, J.C. , Foster, C.B. 1996 SHRIMP zircon dating of the Permian System of eastern Australia Australian Journal of Earth Sciences 43(4) 401-421
Usage: Mentioned (409 fig 6) Min age from reference: Late Permian Max age from reference: Early Permian Comments: Early witten as 'Lower' Late written as 'Upper'
REFID: 40872 Helby, R. , Lennox, M. , Roberts, J. 1986 The age of the Permian sequence in the Stroud-Gloucester Trough. Royal Society of New South Wales. Journal and Proceedings 119(1/2) p33-42
Usage: Mentioned (p37) Comments:

Bibliographic references returned: 13 This data is subject to Geoscience Australia's disclaimer and copyright statements.