Recently (around 10yrs ago) Clare co. council offices paved the entrance to their office with cuntury old limestone, many people walk on the pavement no almost nobody knows anything about it.
The pavement is made from limestone and is coverd in fossils. Here are some types of fossils visible at the location.
Fossils appearing in limestone
Bivalves can vary in shape and size but commonly look like circles or 'C' shapes. They are cross sectional views through the valves of shelled organisms (like mussels and clams)
Brachipods are similar to bivalves but usually have one valve bigger than the other
Coral fossils are identified by a series of 'dots' in a group.
Limestone
Limestone is a common type of carbonate sedimentary rock. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO
3). Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes have likely been more important for the last 540 million years.[1] Limestone often contains fossils, and these provide scientists with information on ancient environments and on the evolution of life.[2]
About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone.[3][2] The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, CaMg(CO
3)
2. Magnesian limestone is an obsolete and poorly-defined term used variously for dolomite, for limestone containing significant dolomite (dolomitic limestone), or for any other limestone containing a significant percentage of magnesium.[4] Most limestone was formed in shallow marine environments, such as continental shelves or platforms, though smaller amounts were formed in many other environments. Much dolomite is secondary dolomite, formed by chemical alteration of limestone.[5][6] Limestone is exposed over large regions of the Earth's surface, and because limestone is slightly soluble in rainwater, these exposures often are eroded to become karst landscapes. Most cave systems are found in limestone bedrock.
Limestone has numerous uses: as a building material, an essential component of concrete (Portland cement), as aggregate for the base of roads, as white pigment or filler in products such as toothpaste or paints, as a chemical feedstock for the production of lime, as a soil conditioner, and as a popular decorative addition to rock gardens. Limestone formations contain about 30% of the world's petroleum reservoirs.[2]
Questions,
1, How many slabs wide is the pavement?
2, What types of fossils can be seen on the pavement?
3, What is the most popular type of fossils on the pavement?
4, About how wide is one slab of the stone?
5, Tell me two uses of limestone in everyday life?
6, Bivalaves are fossils of what type of animal?
Please send anwsers by message, and not email!