The Ordovician-Silurian boundary at Darraweit Guim, central Victoria
- 1 January 1984
- journal article
- research article
- Published by Taylor & Francis in Alcheringa: An Australasian Journal of Palaeontology
- Vol. 8 (1), 1-22
- https://doi.org/10.1080/03115518408619607
Abstract
The graptolite-bearing sequence across the Ordovician-Silurian boundary at Darraweit Guim, central Victoria is subdivided into four biostratigraphic units: the Dicellograptus ornatus-Climacograptus latus Zone, Climacograptus? extraordinarius Zone, Glyptograptus? persculptus Zone and Parakidograptus acuminatus Zone. Diagnostic graptolites of the upper three zones are described, and the trilobite D. (Dalmanitina) darraweitensis Campbell, characteristic of the C? extraordinarius Zone, is revised and assigned to the genus Songxites Lin within the subfamily Mucronaspidinae. Detailed correlation of the Darraweit Guim sequence with the Ordovician-Silurian boundary sequences of Dob's Linn (Scotland), Mirny Creek (northeastern Siberia), Chu-Ili Range (Kazakhstan), the Yangtze Gorge region (Hubei) and the northern Cordillera (Canada) is made on the basis of short-lived, cosmopolitan graptolite species. The relevant rock units at Darraweit Guim are defined for the first time.Keywords
This publication has 12 references indexed in Scilit:
- The Ordovician–Silurian boundary, northern Canadian Cordillera: graptolite and conodont correlationCanadian Journal of Earth Sciences, 1982
- Glyptograptus? persculptus (Salter), its tectonic deformation, and its stratigraphic significance for the Carys Mills Formation of N.E. Maine, U.S.A.Geological Journal, 1981
- Gastropods from some early Devonian limestones of the Walhalla Synclinorium, Central VictoriaMemoirs of the National Museum of Victoria, 1977
- Ordovician graptolite faunas in AustraliaJournal of the Geological Society of Australia, 1975
- A species of the trilobiteDalmanitina (Dalmanitina) from AustraliaGeologiska Föreningen i Stockholm Förhandlingar, 1973
- Graptolite succession across the Ordovician–Silurian boundary in south-eastern AlaskaQuarterly Journal of the Geological Society, 1970
- Notes on the Graptolite Faunas of the Upper Ordovician and Lower SilurianGeological Magazine, 1929
- VI.—The Classification of the PhacopidæGeological Magazine, 1905
- V.—Notes on the British Graptolites and their AlliesGeological Magazine, 1873
- IV.—On some Fossils from the Lower Silurian Rocks of the South of ScotlandGeological Magazine, 1867