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dolerite
[ dol-uh-rahyt ]
noun
- a coarse-grained variety of basalt.
- any of various other igneous rocks, as diabase.
- any basaltlike igneous rock whose composition can be determined only by microscopic examination.
dolerite
/ ˌdɒləˈrɪtɪk; ˈdɒləˌraɪt /
noun
- a dark basic intrusive igneous rock consisting of plagioclase feldspar and a pyroxene, such as augite; often emplaced in dykes
- any dark igneous rock whose composition cannot be determined with the naked eye
dolerite
/ ŏ′ə-ī′ /
- See diabase
Derived Forms
- doleritic, adjective
Other 51Թ Forms
- DZ··· [dol-, uh, -, rit, -ik], adjective
51Թ History and Origins
51Թ History and Origins
Origin of dolerite1
Example Sentences
Studies carried out in the area have revealed that the site where the stones were found is geographically located on the edge of the Karoo dolerite sill, which is not in a zone where diamonds are normally found.
A compact, 2-foot statue of Prince Gudea carved in speckled, dark-gray igneous dolerite has him clutching a vase close to his chest.
The geologist Herbert Thomas established in 1923 that the dolerite used to build Stonehenge came from an outcrop in the Preseli Hills of western Wales.
A century ago the geologist Herbert Thomas established that the spotted dolerite bluestones at Stonehenge originated in the Preseli hills of Pembrokshire where, he suspected, they had originally formed a “venerated stone circle”.
Moreover, chips of rock at the bottom of one of the Waun Mawn sockets were a geologic match to that specific type of Stonehenge bluestone, a rock technically known as an unspotted dolerite.
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