Table 4.1
Razorback Beds stratigraphic description is presented in palynological and lithostratigraphic study undertaken by the University of Queensland [8]
Height above Nonconformity (m)*
Unit Thickness (m)*
Lithological Description
47.24
0.61
Protoquartzite sandstone, yellowish grey (5Y 8/1), friable, fine-grained, fair-sorted, thin-bedded, clayey matrix
46.63
0.15
Silty claystone, yellowish grey (5Y 8/1), kaolinitic, micaceous
46.48
0.46
Protoquartzite sandstone, pale yellowish orange (10YR 8/6), medium- grained, scattered felsitic pebbles
46.02
0.3
Silty claystone, pinkish grey (5YR 8/1), kaolinitic, micaceous, haematitic basal bed
45.72
1.83
Protoquartzite sandstone, dark yellowish orange (10YR 6/6), fine-grained, haematitic lenses
43.89
3.51
Protoquartzite sandstone, medium-grained, planar cross-stratified
40.39
2.29
Protoquartzite sandstone, kaolinitic matrix, felsitic pebbles near top
38.10
1.22
Silty claystone, laminated, epigenetic haematite and limonite
36.88
2.59
Protoquartzite sandstone, fine-grained, haematite layer mid-unit
34.29
5.03
Protoquartzite sandstone, well-sorted, haematitic laminae
29.26
7.01
Protoquartzite sandstone, micaceous, cross-stratified, haematitic concretions
22.25
14.94
Silty claystone, kaolinitic, carbonaceous, ripple marks and dinosaur tracks
7.32
2.29
Protoquartzite sandstone, coarse to very coarse-grained, pebbly
5.03
2.13
Siltstone, thin-bedded to laminated
2.90
2.90
Protoquartzite sandstone, poorly sorted, basal haematitic sandstone
Nonconformity
*measurements converted in meters from original measurements in feet.
Source: Palynological and Lithostratigraphic Features of the Razorback Beds, Mount Morgan District, Queensland, authored by G. Playford and K. D. Cornelius (1967).
Project No PS213278 Mount Morgan Mine - Upper Mundic Gully TSF Seepage Management Plan Heritage Minerals
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