Draft:Cottessergroeve
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The Cottessergroeve, also known as the Quartzite Quarry or Groeve Wijkerslooth[1] is a quarry and geological monument located in South Limburg, Netherlands, in the municipality of Vaals. The quarry is situated southeast of Epen and southwest of Cottessen along a steep cliff by the Geul River in the Geuldal valley, at the base of the southwestern slope of the Plateau van Vijlen.
The site is a nature reserve and geological monument owned by Staatsbosbeheer (State Forestry Service) and is open to the public.
History
The quarry initially extracted quartzite, a type of rock that was broken and screened near the quarry before being supplied to Chamotte Unie in Geldermalsen for the production of fire-resistant bricks known as "Dinas stones" (fire-resistant and silica-containing).[2]
From the 1940s until 1957, underground mining also took place, creating a mine shaft. The extracted material was used to produce fire-resistant furnace linings.[3] Later werden meer tunnels geboord en de oude gangen werden met steenafval gevuld.[2] In 1960 werd de winning gestaakt.[4] Later, more tunnels were drilled, and the old shafts were filled with stone waste. Mining ceased in 1960.
Geology
South of Epen, older rocks from the Epen Formation, approximately 330 million years old from the Upper Carboniferous (Namurian), are exposed alongside the Limburgian Chalk. The Cottessergroeve features a thick layer of quartzite at the surface. These quartzitic sandstones and shales are folded in the subsurface and have a steep southern inclination. The rock has large cleavages, which allowed for easy extraction and widespread use as building material.[3][5]
Above the quartzite layer are fine-layered shales, which contain fossils, though the specimens found were poorly preserved.[3]
The mountain formation at the end of the Carboniferous period in the Ardennes and Eifel also affected South Limburg, leading to the deposition of dissolved silica between sand grains, creating a hard quartzite bank.[6] This period also involved folding and faulting, resulting in notable fractures in the quartzite bank, known as diaclases.[3]
In the quarry wall, an anticline structure is visible, disturbed by two faults, causing the thick quartzite bank to shift.[3]
Usage
Stones from the Cottessergroeve were used in the construction of the nearby Hoeve Termoere.[7]
See also
- Heimansgroeve and Kampgroeve, downstream quarries
- List of geological monuments in South Limburg
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The quartzite quarry at Cottessen around 1950 -
Cleavage planes indicated (1947) -
Diagram of the Cottessergroeve
50°45′31.46″N 5°56′16.59″E / 50.7587389°N 5.9379417°E
References
- ^ Kwartsiet, zandsteen en leisteen, P.J. Felder, Grondboor en Hamer, jaargang 43, nummer 5/6, p. 137-140, november 1989. Gearchiveerd op 2 december 2022.
- ^ a b De Cottessergroeve in het Geuldal. Gearchiveerd op 9 december 2022.
- ^ a b c d e Geologische monumenten in Zuid-Limburg (cd-rom), P.W. Bosch, W.M. Felder, Netherlands Organisation for Applied Scientific Research, 1999
- ^ Carboongroeves bij Cottessen in Zuid-Limburg, Grondboor & Hamer, nr 5, 2007. Gearchiveerd op 2 juli 2022.
- ^ Voorkomen en gebruik van natuurlijke bouwsteen in Limburg, P.W. Bosch, Grondboor & Hamer, 1989. Gearchiveerd op 2 december 2022.
- ^ "Monument Tracker". Monument Tracker. Retrieved 1 August 2024.
- ^ Hoeve Termoere. Gearchiveerd op 24 maart 2023.