Macquarie University
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Nature and environmental significance of large scale heterolithic crossbeds, Singleton coal measures (Permian) Sydney Basin, New South Wales

posted on 2022-03-29, 03:00 authored by C. F. R. Parbury
Large scale inclined strata consisting of shale, siltstone, and fine-to-medium sandstone occur directly over the main Liddell Coal Seam and below the Arties Coal Seam in the Foybrook-Liddell-Howick area within the Upper Permian Singleton Coal Measures, Sydney Basin, N.S.W. Results of the study of: the stratigraphic content within which the large scale inclined strata occur; the nature of the external regional form of the crossbed set; the lithology and the internal organization of the inclined strata is presented. A model incorporating the inclined bedding structure as the product of 'mobile differential compaction is seen to be totally inadequate in the light of field evidence and observation. Comparison with and recognition of the characteristic features of 'Gilbert-type delta' deposits indicate that the large scale inclined bedding structure has a primary depositional origin and is, in fact, a set of crossbeds developed by the introduction of sediment-laden waters into a non-marine deltaic environment.


Table of Contents

1. Introduction -- 2. Location and geological setting of the study area -- 3. The anomalous bedding structures at Foybrook: generative models and their expectations -- 4. Stratigraphic context of the large scale inclined bedding stuctures in the Foybrook-Liddell-Howick area -- 5. Nature of the inclined bedding structure in the study area -- 6. Generalized summary section -- 7. Interpretation of the inclined strata as products of mobile differential compaction -- 8. Characteristics of delta deposits -- 9. Interpretation of the inclined strata as deposits of a Gilbert-type delta -- 10. An environmental model for the large scale heterolithic crossbeds -- Appendices.


Bibliography: p. 140-143 "November 1976". "A thesis submitted in partial fulfilment of the requirements for the Degree of Bachelor of Arts (Honours) in the School of Earth Sciences, Macquarie University, North Ryde".

Awarding Institution

Macquarie University

Degree Type

Thesis bachelor honours


Thesis (BA (Hons)) , Macquarie University

Department, Centre or School

School of Earth Sciences

Year of Award


Principal Supervisor

P. J. Conoghan


Copyright disclaimer: Copyright C.F.R. Parbury 1976 This thesis was digitised for the purposes of Document Delivery. Macquarie University ResearchOnline attempted to locate the author but where this has not been possible; we are making available, open access, the thesis which may be used for the purposes of private research and study. If you have any enquiries or issues regarding this work being made available please contact Macquarie University ResearchOnline - If you wish to access the complete thesis, on receipt of a Document Supply Request, placed with Macquarie University Library by another library, we will consider supplying a copy of this thesis. For more information on Document Supply, please contact




New South Wales


1 online resource (143 p.) ill

Former Identifiers

mq:20431 1654619