The significance of Cambro-Ordovician trilobites from the Kalladeina 1 drill hole, Warburton Basin, South Australia. Issue 4 (19th May 2017)

• Record Type: Journal Article
• Authors: Sun, X. W.; Bentley, C. J.; Jago, J. B.
• Is Part Of: Australian journal of earth sciences. Volume 64:Issue 4(2017)
• Page Start: 471
• Page End: 485
• Publication Date: 2017-05-19
• Subjects: Trilobites -- Drumian -- Tremadoc -- Kalladeina 1 -- Warburton Basin -- South Australia; Earth sciences -- Australia -- Periodicals; Earth sciences -- Periodicals; Geology -- Australia -- Periodicals; Geology -- Periodicals; 559.405
• DOI: 10.1080/08120099.2017.1319420
• Languages: English
• ISSNs: 0812-0099

Abstract

ABSTRACT: The significance of trilobites described from six cores from the Kalladeina 1 drillhole from the Warburton Basin, northeastern South Australia is discussed. The oldest are from a dark grey shale of Core 16 from a depth of 3453.7–3455.8 m; they are of possible early Drumian (Cambrian Series 3, middle Cambrian) age. The youngest come from a dark grey shale of Core 4 at a depth of 2017.2–2022.04 m. This fauna contains the trilobites Asaphellus ? sp., Yosimuraspis sp., Conophrys sp. and Protopliomerops ? sp. thus indicating a Tremadoc (earliest Ordovician) age. These are the youngest known trilobites from the Warburton Basin and the youngest known in South Australia.