dolerite

/dol-uh-rahyt/US // ˈdɒl əˌraɪt //UK // (ˈdɒləˌraɪt) //

辉绿岩,膨润土,流纹岩,掺杂着砂岩

Definitions

n.名词 noun

1
Petrology.
- : 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.

Generally speaking, the soils produced from diorite are superior to those from dolerite.
It stood on edge, and several dikes of basalt, with dolerite, had cut through it.
As the rocks lie in a horizontal position, on most of the islands of the group only the basalts or dolerite are visible.
They have distinct craters, and the material of which the mountain is formed is basalt or dolerite.
The mineral is occasionally found as concretionary masses (sphaerosiderite) in cavities in basic igneous rocks such as dolerite.