pebble dike

pebble dike

[′peb·əl ‚dīk]
(geology)
A clastic dike composed largely of pebbles.
A tabular body containing sedimentary fragments in an igneous matrix.
References in periodicals archive ?
At the San Jose "cuerpo" 1 to [greater than]2 g/mt Au is found in stockworks and zones of shearing and in an arcuate pebble dike, all within intrusive dacite.
Intense early microbrecciation of sandstone at the Santa Rosa deposit, and the pebble dikes and breccias in the San Jose area and elsewhere suggest explosive release of high-pressure fluids from a subjacent magmatic system.