epiclastic

epiclastic

[¦ep·ə′klas·tik]
(geology)
Pertaining to the texture of mechanically deposited sediments consisting of detrital material from preexistent rocks.
References in periodicals archive ?
The name Beulah Camp Formation is given to the excellent exposure of red pyroclastic and epiclastic rocks found along the shore of the Long Reach at Beulah Camp, on the northern end of Rocky Island, and at the northern end of Gorhams Bluff (Fig.
Thinning of the mineralization below the old workings may be the result of complex folding; carbonaceous epiclastic sedimentary rocks intersected in the hanging wall are the probable cause of the TEM anomaly.
The PQR appears to be in-situ, possibly intrusive, at many localities in the Buchans area, but is also the apparent source of the Sandy Lake Formation epiclastic sequence.
It is underlain by andesites of the same age as those at Kremnica and overlain by extensive rhyolitic, epiclastic flows and sediments and rhyolitic to rhyodacitic domes.
At the Saavedra West area precious metal mineralization is hosted by very porous volcaniclastic and epiclastic rocks that are highly altered up to several hundred meters from major high-grade structures.
The mineralization is hosted by a sequence of Jurassic lacustrine epiclastic tuffs interbedded with carbonaceous shales and siltstones that may have been deposited in a caldera lake.
The rocks forming the ridge are Hornitos formation volcanics, comprised of andesitic lava flows and epiclastic volcanic rocks capped by a dacite dome complex.
The volcanic complex comprises dacites, andesites, fragmental basalts and a large epiclastic breccia dipping south on the edge of a 2 kilometre diameter circular depression identified in the SAR.
The exploration (RC) holes are averaging approximately 140m which allows them to penetrate through the weathered epiclastic crater sediments into fresh pyroclastic or intrusive facies kimberlite, which are the preferred samples for analysis.
5 metres to 24 metres, was consolidated brown epiclastic kimberlite showing considerable dilution by non- kimberlite material.
5 meters to 24 meters' depth in the drill hole is a weathered epiclastic kimberlite carrying a high proportion of non- kimberlitic material.
The mineralized zone of the Vickers Target is in the contact of a gabbro-diorite intrusion and a footwall sequence comprised of a mixture of epiclastic or volcaniclastic sandstones with abundant diorite inclusions or dikes.