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Skeletar Formation STRATNO: 16963
Current: Yes Rank: Formation, beds Status: Formal State(s): NSW
Category: Unknown or process pending Usage: Described Definition Card: No
Originator: Entry date: 01-JAN-88 Last Update: 02-OCT-12
Replaced by: Previously known as:
Description: Rhyolite, chert, and white tuffaceous shale containing glossopteris leaves, coal
Comments: Proposed that Skeletar Formation and Gyarran Volcanics are combined to form the Dalwood Group (1994).
Geological province: No quality assured province information available
Type state: Reference section type:
Maximum thickness: 120m Minimum thickness:

Unit Age Event: deposition
Top of unit -
Minimum age: Artinskian 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: Artinskian Ma: % from base of biozone: Age method:

Stratigraphic Hierarchy (current units only): - Rank: - Status:

Chemical Hierarchy (current units only): - Rank: - Status:

  • Skeletar Formation- Formation, beds- Formal

Related units: Relationship: Contact Type:
Gyarran Volcanics underlies Skeletar Formation conformity

First Reference:
REFID: 43477 Booker, F.W., 1960, Studies in Permian sedimentation in the Sydney Basin, New South Wales. Department of Mines. Technical Report, 5, pp10-62

Use on maps:
REFID: 39346 Summerhayes, G., 1983, Muswellbrook, New South Wales, 1:25 000 geological map. Sheet 9033-11-N, 1st edition., Geological Survey of New South Wales, 1v
REFID: 43257 Glen, R.A., Beckett, J., 1993, Hunter Coalfield Regional Geology, New South Wales. Department of Mineral Resources, 1v, Map


Full Bibliographic Details (ordered by usage, publication year)

REFID: 23350 Boyd, R. , Leckie, D. 2000 Greta Coal Measures in the Muswellbrook Anticline area, New South Wales. Australian Journal of Earth Sciences 47(2) p259-279
Usage: Described (263) Comments: Proposed that Skeletar Formation and Gyarran Volcanics are combined to form the Dalwood Group (1994).
REFID: 22969 Maung, T.U. , Alder, D. , Shaw, R. , Hawley, S. 1997 Offshore Sydney Basin. Box 1 Bureau of Resource Sciences, Petroleum Prospectivity Bulletin
Usage: Described (Fig 4.1a) Max age from reference: Early Permian Comments:
REFID: 31881 Loughnan, F.C. 1973 Kaolinite clayrocks of the Koogah Formation New South Wales. Geological Society of Australia. Journal 20(3) p329-341
Usage: Described (p340) Comments: Refers Raggatt (1938) & Robinson (1963)
REFID: 34015 Basden, H.G. 1969 The Sydney Basin - Permian of the Hunter Valley Greta Coal Measures. IN Packham G.H.(ed) - The geology of New South Wales. Geological Society of Australia. Journal 16(1) p323-329
Usage: Described (p328) Comments: Permian
REFID: 68003 Barnes, R. , Dawson, M. , Spiller, F. 2002 Geology - Integration and upgrade: NSW Western Regional Assessments: Brigalow Belt South Bioregion (Stage 2). A project undertaken for the Resource and Conservation Assessment Council; NSW Western regional assessments Geological Survey of New South Wales WRA / 19 157pp
Usage: Briefly described (p38 Fig.3-j.) Min age from reference: Early Permian Max age from reference: Early Permian Comments: Hunter Coalfield, Brigalow Belt South Bioregion. , Lower unit in Greta Coal Measures. , Overlies Farley Formation. Is overlain by Rowan Formation.
REFID: 68004 Hill, M. , McEvilly, R. , Watkins, J. 2002 Mineral and petroleum resources and potential: NSW Western Regional Assessments: Brigalow Belt South Bioregion (Stage 2) Geological Survey of New South Wales 235pp
Usage: Briefly described (p23 Table 1, p51 Table 5.) Comments: Hunter Coalfield. , Lower unit in Greta Coal Measures. , Overlies Farley Formation. Is overlain by Rowan Formation. , Pellet claystone, siltstone and chert.
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 (p524 App.1 Tb.A1.9) Min age from reference: Late Permian Max age from reference: Early Permian Comments: Of the Greta Coal Measures. Pellet claystone, siltstone, chert. Max. thickness:120m. Geological Province: Sydney Basin.
REFID: 61529 Glen, R.A. , Beckett, J. 1997 Structure and tectonics along the inner edge of a foreland basin: the Hunter Coalfield in the northern Sydney Basin, New South Wales Australian Journal of Earth Sciences 44(6) p853-877
Usage: Briefly described (p854 Fig. 1b) Min age from reference: Early Permian Max age from reference: Early Permian Comments: Of the Greta Coal Measures. Geological Province: Sydney Basin.
REFID: 61315 New South Wales Department of Mineral Resources 1995 Sydney Basin IN Stewart, R. and Adler, D. (eds.) "New South Wales Wales Petroleum Potential" - Bulletin New South Wales. Department of Mineral Resources. Coal and Petroleum Geology Branch. Bulletin 1 p163-188
Usage: Briefly described (Table SY1) Min age from reference: Early Permian Max age from reference: Early Permian Comments: Of the Greta Coal Measures. Geological Province: Sydney Basin/Hunter Valley area.
REFID: 43257 Glen, R.A. , Beckett, J. 1993 Hunter Coalfield Regional Geology New South Wales. Department of Mineral Resources 1v Map
Usage: Briefly described (Map Legend) Max age from reference: Early Permian Comments: Of Greta Coal Measures.
REFID: 43194 Tadros, N.Z. 1993 The Gunnedah Basin, New South Wales. Geological Survey of New South Wales. Memoir (Geology) 12 649p
Usage: Briefly described (p100, p129 Tb. 8.3) Min age from reference: Early Permian Max age from reference: Early Permian Comments: Basal unit of Greta Coal Measures (Sydney Basin). Correlative of Leard Formation, Gunnedah Basin.
REFID: 43017 Briggs, D.J.C. 1993 Time control in the Permian of the Sydney-Bowen Basin and the New England Orogen; In Findlay, Unrug, Banks, & Veevers (eds) Gondwana Eight. Assembly, evolution and dispersal. Proceedings of the Eighth Gondwana Symposium, Hobart, Tasmania, A A.A. Balkema, Rotterdam 1v p371-383
Usage: Briefly described (Fig.1,p372) Comments:
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: Briefly described (p232) Min age from reference: Permian Max age from reference: Permian Comments: Of the Greta Coal Measures. Conformably overlies the Gyarran Volcanics.
REFID: 42925 Jones, D.C. , Clark, N.R. 1991 Geology of the Penrith 1:100 000 sheet 9030. New South Wales. Department of Minerals and Energy 1v 202pp
Usage: Briefly described (Table 1) Max age from reference: Early Permian Comments:
REFID: 42916 New South Wales. Dept. Minerals & Energy 1989 Coalfield Review -- Hunter Coalfield. New South Wales. Department of Minerals and Energy. Minfo 23 p23-29
Usage: Briefly described (Table 1) Max age from reference: Early Permian Comments:
REFID: 41902 Kellett, J.R. , Williams, B.G. , Ward, J.K. 1989 Hydrogeochemistry of the upper Hunter River Valley, New South Wales. Bureau of Mineral Resources, Australia. Bulletin 221
Usage: Briefly described (p5 Table 1) Comments:
REFID: 40166 Slansky, J.M. 1985 Geochemistry of high-temperature coal ashes and the sedimentary environment of the New South Wales coals, Australia. International Journal of Coal Geology 5(4) p339-376
Usage: Briefly described (p345) Comments:
REFID: 37773 Moffitt, R.S. 1982 The 1980 east Muswellbrook coal drilling programme. Geological Survey of New South Wales. Quarterly Notes 47 p17-26
Usage: Briefly described (p18) 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) Min age from reference: Permian Max age from reference: Permian Comments: Geol province Sydney Basin
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: Mentioned (p298) Comments:
REFID: 41834 Glen, R.A. , Beckett, J. 1989 Geological note. Thin-skinned tectonics in the Hunter Coalfield of New South Wales. Australian Journal of Earth Sciences 36(4) p589-593
Usage: Mentioned (p590) Comments:
REFID: 41264 Bird, M.I. , Chivas, A.R. 1988 Stable-isotope evidence for low-temperature kaolinitic weathering and post-formational hydrogen-isotope exchange in Permian kaolinites. Chemical Geology 72(3) p249-265
Usage: Mentioned (p251) Comments:
REFID: 41054 McMinn, A. 1987 Palynostratigraphy of the Stroud Gloucester Trough, N.S.W. Alcheringa 11(2) p151-164
Usage: Mentioned (p156) Comments: See also Fig.3
REFID: 40331 Hamilton, D.S. 1986 Depositional systems and coal seam correlation in the Greta Coal Measures of the Muswellbrook region. Geological Society of Australia. Coal Geology Group. Journal 6 p1-18
Usage: Mentioned (p3) Comments:
REFID: 39346 Summerhayes, G. 1983 Muswellbrook, New South Wales, 1:25 000 geological map. Sheet 9033-11-N, 1st edition. Geological Survey of New South Wales 1v
Usage: Mentioned (Map legend) Min age from reference: Middle Permian Max age from reference: Middle Permian Comments:
REFID: 38614 Beckett, J. , Hamilton, D.S. , Weber, C.R. 1983 Permian and Triassic stratigraphy and sedimentation in the Gunnedah-Narrabri-Coonabarabran region. Geological Survey of New South Wales. Quarterly Notes 51 p1-16
Usage: Mentioned (Fig.6) Comments:
REFID: 39664 Baker, C.J. , Uren, R.E. 1982 Kaolin in New South Wales. Geological Survey of New South Wales. Mineral Resources 44
Usage: Mentioned (p117) Comments: See also Table 8
REFID: 39287 Herbert, C. 1980 Depositional development of the Sydney Basin. IN Herbert C., Helby R.(eds) - A guide to the Sydney Basin. Geological Survey of New South Wales. Bulletin 26 p11-52
Usage: Mentioned (Fig. 2.5) Comments:
REFID: 36940 Brownlow, J. 1980 Early Permian sediments in the Maules Creek district, New South Wales. Geological Society of Australia. Coal Geology Group. Journal 2(4) p125-160
Usage: Mentioned (p141) Comments:
REFID: 39288 McClung, G. 1980 Permian marine sedimentation in the northern Sydney Basin. IN Herbert C.,Helby R.(eds) - A guide to the Sydney Basin. Geological Survey of New South Wales. Bulletin 26 p54-72
Usage: Mentioned (Fig. 3.3) Comments:
REFID: 36042 Branagan, D. , Herbert, C. , Langford-Smith, T. 1979 The Sydney Basin. Science Press 1v
Usage: Mentioned (Table 1) Comments:
REFID: 31882 Loughnan, F.C. 1975 Correlatives of the Greta Coal Measures in the Hunter Valley and Gunnedah Basin, New South Wales. Geological Society of Australia. Journal 22(2) p243-253
Usage: Mentioned (p244) Comments: Gyarran Volcanics
REFID: 45090 Mayne, S.J. , Nicholas, E. , Bigg-Wither, A.L. , Rasidi, J.S. , Raine, M.J. 1974 Geology the Sydney Basin - a review. Bureau of Mineral Resources, Australia. Bulletin 149 229pp
Usage: Mentioned (p7) Comments: Time correlation chart
REFID: 31880 Loughnan, F.C. 1971 Kaolinitic claystones in the Sydney Basin. IN Programme and abstracts for the sixth symposium on Advances in the study of the Sydney Basin. University of Newcastle. Department of Geology 18
Usage: Mentioned (p18) Comments:
REFID: 34614 Crapp, C.E. 1969 Characteristics of coal measures of Hunter Valley region. Part II. Some Some characteristics of Greta Coal Measures with particular reference to Balmoral area. IN Abstracts 2nd Symp.,Advances in study of Sydney Basin. University of Newcastle. Department of Geology 1v p29-30
Usage: Mentioned (p29) Comments:
REFID: 34138 Dickins, J.M. 1969 Correlation chart for the Permian System in Australia. IN Gondwana stratigraphy. Unesco, France 1v p475-477
Usage: Mentioned (Cor.Chart) Comments: Sakmarian
REFID: 34292 Leitch, E.C. 1969 Igneous activity and diastrophism in the Permian of New South Wales. IN Dickens J.M. (ed) The Permian of Australia Symposium. Geological Society of Australia. Special Publication 2 p21-37
Usage: Mentioned (Table 1) Comments: Permian
REFID: 34345 McKellar, M.C. 1969 The Sydney Basin - Permian of the Hunter Valley, Maitland Group. IN Packham G.H.(ed) - The geology of New South Wales. Geological Society of Australia. Journal 16(1) p329-335
Usage: Mentioned (Fig.5.7) Comments: Permian
REFID: 43477 Booker, F.W. 1960 Studies in Permian sedimentation in the Sydney Basin New South Wales. Department of Mines. Technical Report 5 pp10-62
Usage: Not recorded (p15,35,38,39,61,PL.3) Comments: See also Lexicon. Unit of Greta Coal Measures.

Bibliographic references returned: 39
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