breccia

/brech-ee-uh, bresh-/US // ˈbrɛtʃ i ə, ˈbrɛʃ- //UK // (ˈbrɛtʃɪə) //

砾岩,角砾岩,砾岩层,碎屑岩

Definitions

n.名词 noun

1
Petrology.
- : rock composed of angular fragments of older rocks melded together.

The specimen of this breccia is attached to a plate of granular quartz, and may possibly have been part of a vein.
It was discovered by chance in 1858, having been until then hermetically sealed by a mass of limestone breccia.
Lapping against it, at the mouth of the river, is a curious formation of magnesian breccia.
Below this were strata of trachitic breccia and augite; the formation was then seamy to an unknown depth.
What is the difference between trappean breccia and trappean conglomerate?