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The upper devonian boyd volcanic complex, eden, New South Wales

Journal Article


Abstract


  • Intrusive and extrusive silicic rocks intertongue with mafic volcanics and sediments in the southern part of the Eden-Comerong-Yalwal Rift Zone. Late Devonian fish occur in the sediments. The present stratigraphic scheme of the ���Eden Rhyolite��� and the ���Lochiel Formation��� separated by an unconformity or disconformity is rejected. In its place, we rename the assemblage the Boyd Volcanic Complex, formed in a terrestrial zone of extension. The recognition that the alkaline Gabo Island Granite intrudes the Boyd Volcanic Complex, and that both are overlain by the Upper Devonian Merrimbula Group, provides a tight stratigraphic bracket on a potential point on the radiometric time scale. �� Taylor & Francis Group, LLC.

Publication Date


  • 1979

Citation


  • Fergusson, C. L., Cas, R. A. F., McA Powell, C., Collins, W. J., Crook, K. A. W., Scott, P. A., . . . Young, G. C. (1979). The upper devonian boyd volcanic complex, eden, New South Wales. Journal of the Geological Society of Australia, 26(1-2), 87-105. doi:10.1080/00167617908729070

Scopus Eid


  • 2-s2.0-84954937281

Web Of Science Accession Number


Start Page


  • 87

End Page


  • 105

Volume


  • 26

Issue


  • 1-2

Place Of Publication


Abstract


  • Intrusive and extrusive silicic rocks intertongue with mafic volcanics and sediments in the southern part of the Eden-Comerong-Yalwal Rift Zone. Late Devonian fish occur in the sediments. The present stratigraphic scheme of the ���Eden Rhyolite��� and the ���Lochiel Formation��� separated by an unconformity or disconformity is rejected. In its place, we rename the assemblage the Boyd Volcanic Complex, formed in a terrestrial zone of extension. The recognition that the alkaline Gabo Island Granite intrudes the Boyd Volcanic Complex, and that both are overlain by the Upper Devonian Merrimbula Group, provides a tight stratigraphic bracket on a potential point on the radiometric time scale. �� Taylor & Francis Group, LLC.

Publication Date


  • 1979

Citation


  • Fergusson, C. L., Cas, R. A. F., McA Powell, C., Collins, W. J., Crook, K. A. W., Scott, P. A., . . . Young, G. C. (1979). The upper devonian boyd volcanic complex, eden, New South Wales. Journal of the Geological Society of Australia, 26(1-2), 87-105. doi:10.1080/00167617908729070

Scopus Eid


  • 2-s2.0-84954937281

Web Of Science Accession Number


Start Page


  • 87

End Page


  • 105

Volume


  • 26

Issue


  • 1-2

Place Of Publication