The experimental materials selected are typical mudstone from the mudstone layers of the Suining Group (its lithostratigraphic unit
is marked by J3s), which is located in the Jinfeng district of Chongqing, southwestern China (29[degrees]30'46.05"N, 106[degrees]18'55.03"E).
Herein our study focuses on the topmost lithostratigraphic unit
of the Tabanit Group represented by the Jbel Lmgaysmat Formation (Destombes et al.
The formations and members of the Pirgu Stage are based on rock structure and texture, chemical composition, skeletal content, and other features (rock colour, fossil concentration) characterizing a single lithostratigraphic unit
. The formations formed in more or less similar environments can be combined into four groups (lithotypes, Hints et al.
According to Perez-Lorente (2002), the Urbion Group is the lithostratigraphic unit
of the Cameros Basin that contains the majority of the outcrops.
It is positioned in the Lower Tertiary Basin of the Tagus River (LTBT), and belongs to the Miocene lithostratigraphic unit
named "Argilas de Tomar" (AT) according to Barbosa (1995).
14) or to a new lithostratigraphic unit
. A new name--the Variku Formation--is proposed for this claystone--siltstone bed (Fig.
In the Upsalquitch Forks area, the Upsalquitch Formation is the oldest lithostratigraphic unit
and forms the basal sequence of the Early Silurian Chaleurs Group (Fig.
This lithostratigraphic unit
yielded invertebrates and plants, and abundant vertebrates (Fig.
-- Redescription of the Cooper Member of the Dockum Formation indicates that this lithostratigraphic unit
is much thicker in its type area than previously recognized.
2012) as a distinct lithostratigraphic unit
exposed in the Dasht Murgha Syncline north of the town of Qila Saifullah which has been designated as its reference section (Fig.
The Leza Fm was defined as a formal lithostratigraphic unit
by Mas et al.