Dictionary of Geology
Chevron folding
Angular folding with straight limbs and small hinges.
Oolitic limestone
Oolite – means ‘egg stone’. A sedimentary rock composed of spherical grains formed in concentric layers. Oolitic limestone is formed primarily of calcium carbonate. Bath stone is a famously quarried material and was used to create the distinctive white facades of large portions of the city of Bath in England.
Tectonic plates
Tectonic plates – The crust of the earth is composed of many very large ‘plates’ of rock that move in relation to each other. There are seven major plates: Pacific, North American, South American, African, Eurasian, Australian and Antarctic, as well as several smaller ones. These plates may 1) converge, or move toward one another, [...]
Riprap
Riprap – large stone boulders used to prevent erosion by water. Found along river, lake and shorefaces. Often composed of hard rocks such as granitoids.
Categories
Most Emailed
- N/A
