The Ordovician-Silurian transition and the lower part of the Silurian (southeastern Armorican Massif, France)

被引：15

作者：

Piçarra, JM

Robardet, M

Bourahrouh, A

Paris, F

Pereira, Z

Le Menn, J

Gourvennec, R

Oliveira, T

Lardeux, H

机构：

[1] Inst Geol & Mineiro, P-7802902 Beja, Portugal

[2] Univ Rennes 1, Geosci Rennes, CNRS, UMR 6118, F-35042 Rennes, France

[3] Inst Geol & Mineiro, P-4465 Sao Mamede de Infesta, Portugal

[4] Univ Bretagne Occidentale, CNRS, UMR 6538, UFR Sci,Domaine Ocean, F-29285 Brest, France

[5] Inst Geol & Mineiro, P-2710 Alfragide, Portugal

来源：

COMPTES RENDUS GEOSCIENCE | 2002年 / 334卷 / 16期

关键词：

Upper Ordovician; Silurian; Armorican Massif; France; graptolites; stratigraphy;

D O I：

10.1016/S1631-0713(02)01864-3

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A new section in the Silurian graptolitic 'phtanites' (black cherts) of Les Fresnaies at Chalonnes-sur-Loire (SE Armorican Massif) shows for the first time that these rocks (1) succeed conformably to Uppermost Ordovician (Hirnantian) glaciomarine deposits and (2) contain successive graptolite assemblages that characterise the base of the Silurian, the whole Rhuddanian and Aeronian stages and the lower part of the Telychian. (C) 2002 Academie des sciences / Editions scientitiques et medicales Elsevier SAS.

引用

页码：1177 / 1183

页数：7

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