The nature and relationships of the Tertiary Brown coal flora of the Yallourn area in Victoria, Australia

Authors

  • Suzanne L. Duigan School of Botany, University of Melbourne

DOI:

https://doi.org/10.54991/jop.1965.731

Abstract

To date, sixteen taxa from the brown coal have been identified satisfactorily. Almost all of these had a wider distribution in Australia during the Tertiary period than they do at present, and only about half of them still occur in Victoria. A search for comparable modern floras shows that all sixteen taxa are still represented in New Guinea. with somewhat smaller numbers in New Caledonia. part of the eastern Australian coast and northern New Zealand. The nature of these modern floras and the climatic conditions under which they occur suggest that the brown coal vegetation consisted mainly of Nothofagus rain forests and gymnosperm or mixed gymnosperm-broadleaf forests, possibly with some overlap between these types, and that the rainfall was high and the temperatures were moderate.

Pollen analysis has shown that, with the exception of the Lauraceae and Oleaceae (the vertical distribution of which is not known) and the Restionaceae/Centrolepidaceae (which only occurs at the top of the coal), the taxa concerned occurred throughout the period of formation of the coal, but that their relative abundance varied considerably Nothofagous pollen dominates the diagram as a whole. with values of up to 95%, and when the few low values for this genus are recorded the values for one or more of Casuarina, Myrtaceae and Gymnosperms are high. Complex changes in the diagram suggest a major change in environmental conditions at about the middle of the coal-forming period, with the possibility that conditions were much less stable during the second half of this period.

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References

Bakker K 1957. Restionaceae. Flora Malesiana, Ser. I, 5: 416-420.

Bauer GN 1957. The nature and distribution of rain forests in New South Wales. Aust. J. Bot., 5: 190-233.

Brass LJ 1941. The 1938-39 Expedition to the Snow Mountains, Netherlands New Guinea. J. Arnold Arbor., 22: 271-342.

Burbidge Nancy T 1960. The phytogeography of the Australian region. Aust. J. Bot., 8: 75-211.

Chapman F 1925a. Notes on the brown coal from Morwell, South Gippsland. Rec. geol. Surv. Vict., 4 485-487.

Idem 1925b. On some seed-like bodies in the Morwell brown coal. Ibid., 4: 487-489.

Chapman VJ 1958. The geographical status of New Zealand lowland forest vegetation. N.Z. Geogr., 14: 103-114.

Coaldrake JE & Bryan WW 1957. A rainfall map of South-eastern Queensland. Div. Plant Ind. Tech. Pap. No. 8.

Cockayne L. 1928. The vegetation of New Zealand. Englemann, Leipzig.

Cookson, Isabel C 1946. Pollen of Nothofagus Blume from Tertiary deposits in Australia. Proc. Linn. Soc. N.S.W., 71: 49-63.

Idem 1947. On fossil leaves (Oleaceae) and a new type of fossil pollen grain from Australian brown coal deposits. Ibid., 72: 183-197.

Idem 1950. Fossil pollen grains of proteaceous type from Tertiary deposits in Australia. Aust. J. Sci. Res. B., 3: 166-177.

Idem 1952. Identification of Tertiary pollen grains with those of New Guinea and New Caledonian beeches. Nature, Lond., 170: 127.

Idem 1953. The identification of the sporomorph Phyllocladidites with Dacrydium and its distribution in southern Tertiary deposits. Aust. J. Dot., 1: 64-70.

Idem 1957. On some Australian Tertiary spores and pollen grains which extend the geological and geographical distribution of living genera. Proc. roy. Soc. Vict., 69: 41-53.

Idem 1959. Fossil pollen grains of Nothofagus from Australia. Ibid., 71: 25-30.

Cookson Isabel C & Duigan Suzanne L 1950. Fossil Banksieae from Yallourn, Victoria, with notes on the morphology and anatomy of living species. Aust. J. Sci. Res. B. 3: 133-165.

Idem 1951. Tertiary Araucariaceae from south-eastern Australia, with notes on living species. Ibid., 4: 415-449.

Cookson Isabel C. & Pike Kathleen M 1953a. A contribution to the Tertiary occurrence of the genus Dacrydium in the Australian region. Aust. J. Bot., 1: 474-484.

Idem 1953b. The Tertiary occurrence and distribution of Podocarpus (Section Dacrycarpus) in Australia and Tasmania. Ibid., 1: 71-82.

Idem 1954a. The fossil occurrence of Phyllocladus and two other podocarpaceous types in Australia. Ibid., 2: 60-68.

Idem 1954b. Some dicotyledonous pollen types from Cainozoic deposits in the Australian region. Ibid., 2: 197-219.

Couper RA 1960. Southern hemisphere Mesozoic and Tertiary Podocapaceae and Fagaceae and their palaeogeographic significance. Proc. roy. Soc., 152: 491-500.

Cranwell Lucy m 1939. Southern-beech pollens. Rec. Auckland (N.Z.) inst., 2: 175-196.

Cranwell LM & Moore LB 1936. The occurrence of kauri in montane forest on Te Moehau. N.Z.J. Sci. Tech., 18: 531-543.

Curtis Winifred M. 1956. The student’s flora of Tasmania. Govt. printer. Tasmania.

Dawson JW 1963. New Caledonia and New Zealand – a botanical comparison. Tuatara, 11: 178-193.

Deane H 1925. Fossil leaves from the open cut, state brown coal mine, Morwell. Rec. geol. Surv. Vict., 4: 492-498.

Forestry and Timber Bureau 1962. Forest trees of Australia. Govt. Printing Office, Canberra.

Gibbs LS 1917. A contribution to the phytogeography and flora of the Afrak Mountains. Taylor & Francis, London.

Hounam C 1951. Meteorological and climate conditions in British New Guinea and adjacent Islands. In: The resources of the Territory of Papua and New Guinea. Min. national Develop., Canberra.

Hurlimann JH 1962. The Structure of some biocenoses of New Caledonia. Proc. 9th. Pac. Sci. Congr. Bangkok: 89-94.

Jones R 1964. The mountain mallee heath of the MacPherson Ranges. Univ. Qd. Pap., 4: 159-220.

Kidson E 1950. The elements of New Zealand’s climate. In: New Zealand weather and climate. Ed. J. Garneir. Whitcombe & Tombs.

Lam HJ 1934. The flora of New Guinea. Blumea, 1: 115-159.

Idme 1945. Fragmenta Papuana. Sargentea. 5: 1-196.

Lane Poole GE 1925. The forest resources of the Territory of Papua and New Guinea. Australia.

Mason GW & Preest DS 1953-54. Notes on the vegetation types of Little Barrier. Taen. 6: 91-98.

Ministry of National Development 1951. The resources of the Territory of Paia and New Guinea. Canberra.

Patton RT 1958. Fossil wood from Victorian brown coal. Proc. roy. Soc. Vict., 70: 129-143.

Pike Kathleen M 1953. Fossil fruiting cones of Casuarina and Banksia from Tertiary deposits in Victoria. Ibid., 65: 1-8.

Robbins RG 1961. Montane formations in New Guinea. U.N.E.S.C.O. Sympos. Veget. Humud Tropics, Bogor, Indonesia.

Idem 1962. The podocarp-broadleaf forests of New Zealand. Trans. roy. Soc. N.Z., 88: 33-75.

Sarlin, P. 1954. Bois et forets de la nouvelle Caledonie. Centre Tech. Forest. Tropic.

Sleumer H 1955. Proteaceae. Flora Malesiana, Ser. I, 5: 147-206.

Smith LS 1956. New species and notes on Queensland plants. Proc. roy. Soc. Qd, 67: 29-40.

Van Steenis CGGJ 1953. Results of the Archbold Expeditions. Papuan Nothofagus. J. Arnold Arbor., 34: 301-376.

Thomas DE & Baragwanath W 1949. Geology of the brown coals of Victoria. Min. geol. J., 3.

Virot R 1956. La vegetation Canaque. Mem. Mus. Nat. Hist. Nat., Ser. B. Bot., 7, 1-400.

Wombersely J.S. & McAdam JB 1957. Forests and forest conditions in the Territories of Papua and New Guinea. New Guinea For. Dep.

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Published

1965-12-31

How to Cite

Duigan, S. L. (1965). The nature and relationships of the Tertiary Brown coal flora of the Yallourn area in Victoria, Australia. Journal of Palaeosciences, 14((1-3), 191–120. https://doi.org/10.54991/jop.1965.731

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Research Articles