It is followed by a glauconitic sandstone
lithofacies which is friable, fine to medium grained and occasionally carbonaceous (Fig.
Notation SK SL Quarry location Kocbere Libnava Age Cretaceous (Cenomanian) Petrography Glauconitic sandstone
; Glauconitic massive texture; sandstone; fine-grained banded texture; fine-grained Mineralogical Quartz (83%); Quartz (71%); composition K-feldspar (2%); K-feldspar (8%); muscovite, rutile, glauconite (3%); tourmaline, zircon (1%) zircon, titanite (1%) Notation SZ Quarry location Zamel Age Petrography Glauconitic sandstone
; schistose texture; medium-grained Mineralogical Quartz (79%); composition glauconite (9%); feldspars (4%); muscovite (1%) TABLE 2: XRF chemical composition of tested materials.
Provenance: Low silisiclastic contents in the green sandstone indicate a distant or low relief source, but the presence of the glauconitic sandstone
suggests intermittent influxes of coarse silisiclastic material, possibly by turbidity current (Plates 7 and 8).
One can find the phosphatic Obolus sandstone, including brachiopod bivalves and fragments, radioactive alum shale, glauconite-rich gray bentonite clay and glauconitic sandstone
. The Middle Ordovician rocks (ca 460-470 million years old) in the area are represented by ca 15-20-metre-thick carbonate rocks .
Fewer than 60 specimens assigned to 18 species were previously recorded from the calcareous glauconitic sandstone
of the Maekula Member (Schmidt 1904, 1907; Lamansky 1905; Opik 1937; Balashova 1961, 1966).
At the upstream end of the section, hard, very fossiliferous glauconitic sandstone
forms a shoal across the channel (Locality 1).
The Chichali Formation revealed laterite, glauconitic sandstone
and carbonaceous green shale lithofacies, representing middle to outer ramp depositional environment.
###Cambrian###Kussak Formation###Gray and purplish shale and glauconitic sandstone
. pebble bed at base.
It may be concluded that glauconitic sandstone
representing the Pr.
The Kussak Formation consisted of glauconitic sandstone
and shale interbedded lithofacies, borrowed glauconitic sandstone
lithofacies, based which a shallow marine depositional settings is suggested.
The outcrop shows a 4-5 m thick succession of sedimentary rocks beginning with the early Cambrian Tiskre sandstone and ending with the glauconitic sandstone
of the Leetse Formation (Arenig) in the upper part of the outcrop.