The sequence in the area consists of alternating claystone
, siltstone and sandstone.
thermally mature, claystone
source rock unit, exceeding 1% TOC, exists
2006); however, only a few have addressed microstratigraphy and claystone
fabrics (Brandt Velbel 1984; Hughes & Cooper 1999; Hunda et al.
The weathered nature of much of the ore (Upper Claystone
and Upper BOCO) meant that primary ball mill grinding was minimal.
The main bedrocks underlying the area are siltstone, claystone
, and sandstone with frequent occurrences of rock salt, potash, gypsum, and anhydrite.
On the following days, scientists from Germany and abroad will present latest results on the properties of claystone
as repository formation, on the development of suitable geomaterials for long-term repository sealing and the gas tightness of salt rock.
Freshly broken surfaces exhibit interstitial matrix that ranges from fine-grained, clean quartz sandstone and siltstone, hematitic claystone
In Estonia the Lower Ordovician succession is represented by quartzose sandstones of the Kallavere Formation, dark laminated graptolite argillites of the Turisalu Formation, and light claystone
of the Varangu Formation of the Tremadoc Age, followed by glauconitic silts, sands or calcareous sandstones of the Leetse Formation, and glauconitic limestones of the Toila Formation of the Arenig Age (Mannil & Meidla 1994).
These features are caused by groundwater seepage from a dolomitic claystone
of the Salem Formation, which acts as an aquitard to groundwater flow from the overlying closed karst aquifer.
Site indexes I and II have deep soils developed on sandstone (Table 2) whereas site III has shallow soil developed on claystone
with high carbonate content and high bulk density, which reduces the uptake of micronutritions and phosphate and the amount of effective soil moisture, respectively.
The lower 170 feet (52 m) of this section is composed of fossiliferous siltstone and claystone
that are lithologically similar to those identified as the Puente Formation by Gray (1961) approximately 11 km (7 mi) to the north and northwest of the Bedford Canyon locality in the Corona North and Prado Dam 7.
In this study, the Porters Creek was subdivided into two sections, a sandy lower section (Tippah Sand Lentil and equivalent sections) and the typical clay upper section with a thin bed of indurated claystone
marking this interformational boundary.