dolerite

dol·er·ite

D0327900 (dŏl′ə-rīt′)n. Chiefly British A dark, fine-grained igneous rock; diabase.

[French dolérite, from Greek doleros, deceitful (from its easily being mistaken for diorite), from dolos, trick; see del- in Indo-European roots.]

dol′er·it′ic (ə-rĭt′ĭk) adj.

dolerite

(ˈdɒləˌraɪt) n1. (Geological Science) a dark basic intrusive igneous rock consisting of plagioclase feldspar and a pyroxene, such as augite; often emplaced in dykes2. (Geological Science) any dark igneous rock whose composition cannot be determined with the naked eye[C19: from French dolérite, from Greek doleros deceitful; so called because of the difficulty of determining its composition] doleritic adj

dol•er•ite

(ˈdɒl əˌraɪt)

n. any of various dark igneous rocks of basaltic composition, as diabase. [1830–40; < French dolérite < Greek doler(ós) deceitful (derivative of dólos wile) + French -ite -ite¹] dol`er•it′ic (-ˈrɪt ɪk) adj.

Dolerite

a magmatic rock, effusive or intrusive (near the surface), with a basalt composition. It is characterized by a holocrystalline, coarse-grained doleritic (or ophitic) structure; an aggregate of pyroxene (frequently with olivine) in the form of isometric grains fills out the angular sections between prisms of plagioclase. Dolerite is formed as a result of the slow cooling of molten basalt in the central parts of lava flows or in veins. Dolerite is used in construction as dimension stone and to make crushed stone.

单词	dolerite
释义	dolerite dol·er·ite D0327900 (dŏl′ə-rīt′)n. Chiefly British A dark, fine-grained igneous rock; diabase. [French dolérite, from Greek doleros, deceitful (from its easily being mistaken for diorite), from dolos, trick; see del- in Indo-European roots.] dol′er·it′ic (ə-rĭt′ĭk) adj. dolerite (ˈdɒləˌraɪt) n1. (Geological Science) a dark basic intrusive igneous rock consisting of plagioclase feldspar and a pyroxene, such as augite; often emplaced in dykes2. (Geological Science) any dark igneous rock whose composition cannot be determined with the naked eye[C19: from French dolérite, from Greek doleros deceitful; so called because of the difficulty of determining its composition] doleritic adj dol•er•ite (ˈdɒl əˌraɪt) n. any of various dark igneous rocks of basaltic composition, as diabase. [1830–40; < French dolérite < Greek doler(ós) deceitful (derivative of dólos wile) + French -ite -ite¹] dol`er•it′ic (-ˈrɪt ɪk) adj. Dolerite Dolerite a magmatic rock, effusive or intrusive (near the surface), with a basalt composition. It is characterized by a holocrystalline, coarse-grained doleritic (or ophitic) structure; an aggregate of pyroxene (frequently with olivine) in the form of isometric grains fills out the angular sections between prisms of plagioclase. Dolerite is formed as a result of the slow cooling of molten basalt in the central parts of lava flows or in veins. Dolerite is used in construction as dimension stone and to make crushed stone.
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