carbonaceous rock

carbonaceous rock

[kär·bə′nā·shəs ′räk]
(petrology)
Rock with carbonaceous material included.
References in periodicals archive ?
5) 2-3 cm darker brownish and slightly carbonaceous rock, with abundant brachiopod shells and fragments in the upper part.
Roughly two-thirds of Cuba's territory is karstic, with an abundance of limestone, marlstone, marble and other carbonaceous rocks.
Metasedimentary rocks are represented by phyllites, siltstones, carbonaceous rocks, sandstones, grits and conglomerates.
Finer material is also derived from the downfall of finely laminated clayey carbonaceous rocks.
Usually the content of crystalline rocks in the gravel-pebble fraction of glaciofluvial deposits is 10-15% higher than in tills, whereas the content of carbonaceous rocks in them is correspondingly lower (Raukas 1978).