dolerite
Coarse-grained igneous rock
Dolerite is a dark, coarse-grained igneous rock, similar in composition to basite but with larger crystals.
It forms when magma cools slowly underground, typically in sheets or dikes.
The term is more common in British geological usage; Americans often call the same rock diabase.
Stonehenge's inner circle is made of dolerite transported from Wales.
Dark intrusive igneous rock
- basaltFine-grained volcanic stone
- diabaseDark intrusive igneous rock
- alkalineHaving high pH
- magmaMolten rock underground
intermediate · cumulate · differentiation · fractionation · cooling
Crushed rock for paving
- aggregateCombined sum total
- bluestoneBluish-gray construction stone
- constructionProcess of building something
- pavingLaying hard ground cover
ballast · crushing · quarrying · cobblestone · monument · Stonehenge
Rock-forming silicate group
- amphiboleDark inosilicate mineral group
- olivineGreen igneous rock mineral
- feldsparSilicate mineral group
- labradoriteIridescent feldspar mineral
magnetite · apatite · biotite · chlorite · quartz · hornblende
Window's bottom ledge
Clear, ordered, brilliant
- fine-grainedComposed of minute particles
- groundmassRock's fine-grained foundation
- massiveExtremely large and heavy
- columnarShaped like a pillar
gabbro
Dark intrusive igneous rock
magma · intermediate · cumulate · differentiation · fractionation · cooling
roadstone
Crushed rock for paving
- aggregateCombined sum total
- bluestoneBluish-gray construction stone
- constructionProcess of building something
paving · ballast · crushing · quarrying · cobblestone · monument · Stonehenge
pyroxene
Rock-forming silicate group
- amphiboleDark inosilicate mineral group
- olivineGreen igneous rock mineral
- feldsparSilicate mineral group
labradorite · magnetite · apatite · biotite · chlorite · quartz · hornblende
sill
Window's bottom ledge
crystalline
Clear, ordered, brilliant
- fine-grainedComposed of minute particles
- groundmassRock's fine-grained foundation
- massiveExtremely large and heavy
Palisades
Named geological or residential area
- TasmaniaIsland state below Australia