Meaning of phacolith | Babel Free

Definitions

A lens-shaped mass that occurs in an anticlinal crest or synclinal trough.

Examples

“This body is a phacolith intruded along the gneiss-schist boundary in the trough of a syncline that plunges 16° southeast.”

“This bedding forms a distinctive stratigraphic sequence that may be traced from phacolith to phacolith throughout an area of 1,200 square miles.”

“Corndon Hill, which lies east of Montgomery in Powys, Wales, is a circular phacolith made of Ordovician dolerite (Figure 5.3b).”

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