Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

Ostracods across the Frasnian/Famennian boundary (Devonian) in the Hony railway section (southern border of the Dinant Synclinorium, Belgium)-geochemical consequences
Casier, J.-G. (2018). Ostracods across the Frasnian/Famennian boundary (Devonian) in the Hony railway section (southern border of the Dinant Synclinorium, Belgium)-geochemical consequences. Palaeobiodiversity and palaeoenvironments 98(3): 431-439. https://dx.doi.org/10.1007/s12549-018-0321-8
In: Palaeobiodiversity and palaeoenvironments. SPRINGER HEIDELBERG. ISSN 1867-1594; e-ISSN 1867-1608, more
Peer reviewed article  

Available in  Author 

Keywords
    Ostracoda [WoRMS]
    Marine/Coastal
Author keywords
    Ostracods; Palaeoecology; Biostratigraphy; Frasnian/Famennian boundary;Mass extinction

Author  Top 

Abstract
    Ostracods are extremely rare in the upper part of the Frasnian but sometimes very abundant in the base of the Famennian exposed in the Hony railway section. The associations of ostracods in the base of the Famennian belong to the Eifelian Mega-Assemblage and are indicative of shallow and sometimes semi-restricted marine environments, but this fauna has been mobilised periodically most likely by seismic activity. The abnormally high abundance of particularly well-preserved dissociated valves of adults and instars indicates a depositional environment very close to the shore at Hony, as is the case in some other localities in the southern border of the Dinant Synclinorium. In the fine dark shales straddling the Frasnian/Famennian boundary, ostracods are silicified and are evidence of an intense circulation of ground water during diagenesis. That may explain the increase of chalcophile elements and the absence of a significant iridium anomaly reported in this bed. A new zone based on metacopid ostracods, the Ovatoquassilites avesnellensis Zone, is established in the base of the Famennian.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Author