biofacies

biofacies

[′bī·ō‚fā·shēz]
(geology)
A rock unit differing in biologic aspect from laterally equivalent biotic groups.
Lateral variation in the biologic aspect of a stratigraphic unit.
References in periodicals archive ?
Trilobites and biofacies in the Ordovician Oland Series (Tremadocianmid Darriwilian) of Baltica and a brief comparison with the Yangtze Plate.
In this paper, we estimated the water-depth ranks of 374 sections during the Hirnantian based on their lithofacies and biofacies and reconstructed 2D and 3D palaeotopographic maps using tools in the ArcGIS software.
However, the Middle Tianshan-Beishan Region has its own lithological and biofacies characters, although some species are shared with the Siberian province.
Biofacies of the Iranian Oil Consortium Agreement area: Iranian Oil Operating Companies, Geological and Exploration Division, Report 1082, 89.
Further detailed quantitative study may reveal chitinozoan biofacies (such as those recognized by Nestor 1998 in the Rhuddanian of the East Baltic region) in the interval represented by the Lower and Upper Visby formations.
annulatum was most common in shallow-water environments close to the fair wave base, but occasionally it occurs in deeper-water carbonate facies (cephalopod limestone biofacies, platy limestone with common trilobites) or even off-shore shales.
The Ikla and Staicele sections exhibit the transition from shelly to graptolite biofacies and have received attention as the type sections of several lithostratigraphical units (Saarde Formation, Ikla, Lemme, and Staicele members).