volcaniclastic rock

volcaniclastic rock

[väl¦kan·ə¦klas·tik ′räk]
(petrology)
Clastic rock containing volcanic material in any proportion.
References in periodicals archive ?
Significant mineralization, up to 20% stringers, disseminated and semi-massive to massive sulphides, was intercepted in 7 of the 8 drill holes within the first 20 metres from surface which was contained in altered volcaniclastic rock.
EGD007 and EGD010, currently at down-hole depths of 1009 metres and 1073 metres respectively, are drilling in volcanic and volcaniclastic rock units that typically overlie the Hugo Deposit.
0 metres; elevated gold and copper values in highly altered volcaniclastic rock were encountered to the bottom of the hole at 387.
A sample of subcropping, sheared and mineralized felsic volcaniclastic rock from the Emben property prospect area assayed 2.
3 metres of unsampled core is predominantly unmineralized basement volcaniclastic rock.
The pyroclastic rocks are volcaniclastic rocks formed by accumulation of pyroclasts (fragments) during Mesozoic explosive eruption by Yanshan movement.
The rocks along the Tarom-Hashtjin axis, which are considered equivalent to the Karaj Formation, are different from those in central Alborz in terms of the lithology and chemical composition because the lava flows do not consist only of volcaniclastic rocks along this axis and their compositions are more basic.
Permo-Triassic and Cenozoic sedimentary, volcanic and volcaniclastic rocks unconformably overlie the Palaeozoic basement (Fig.
Muehlenbachs (2003), "Tuff Life: Bioalteration in volcaniclastic Rocks from the Ontong Java Plateau," Geochem.
The Corralitos area is underlain by hydrothermally-altered, coarse-grained granodioritic to monzonitic intrusions and adjacent volcanic and volcaniclastic rocks of probable Cretaceous age.
The Property is principally underlain by Tertiary volcaniclastic rocks of the Callipuy Formation.
This resource consists of two mineralised bodies, the Main Zone and Tom's Zone in Silurian volcaniclastic rocks of the Anson Formation.