Graptolite evidence for the ages of the Sofala Volcanics and Willow Glen Formation, northern capertee high, N.S.W.

IF 1.2 4区地球科学 Q3 PALEONTOLOGY

Alcheringa Pub Date : 1998-01-01 DOI:10.1080/03115519808619201

R. B. Rickards, A. Wright, J. Pemberton

引用次数: 8

Abstract

New finds of graptolites in the Cudgegong district, N.S.W., indicate a Bo3 (mid-Bolindian: Late Ordovician) age for the upper part of the Sofala Volcanics and an early Pridoli (Late Silurian) age for the upper part of the Willow Glen Formation. The Silurian graptolite is described as Monograptus parultimus minutus subsp. nov. Integration of the new biostratigraphic data with SHRIMP ages for volcanic units in the Cudgegong sequence supports an age of 410 Ma for the Silurian-Devonian boundary.

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索法拉火山和威洛格伦组时代的笔石证据，北卡波提高，新西南

新南西Cudgegong地区新发现的笔石表明，索法拉火山上部为Bo3(中bolindian:晚奥陶世)时代，Willow Glen组上部为早Pridoli(晚志留世)时代。志留纪笔石被描述为Monograptus parultimus minutus subsp。11 .将新的生物地层资料与Cudgegong层序中火山单元的SHRIMP年龄相结合，支持志留纪-泥盆纪界线的年龄为410 Ma。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Alcheringa 地学-古生物学

CiteScore

2.60

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： Alcheringa : An Australasian Journal of Palaeontology is the official journal of the Australasian Palaeontologists. Alcheringa covers all aspects of palaeontology and its ramifications into the earth and biological sciences, including: Taxonomy- Biostratigraphy- Micropalaeontology- Vertebrate palaeontology- Palaeobotany- Palynology- Palaeobiology- Palaeoanatomy- Palaeoecology- Biostratinomy- Biogeography- Chronobiology- Biogeochemistry- Palichnology. Review articles are welcome, and may be solicited from time to time. Thematic issues are also possible. Emphasis is placed on high quality and informative illustration, in both line drawings and photographs. Papers of general significance may receive preference over those of more local interest.