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.

Discovery of the Ordovician Kinnekulle K-bentonite at the Poosaspea cliff, NW Estonia/Kinnekulle K-bentoniidi paljand Poosaspea pangal (Loode-Eesti)

It was emplaced over metamorphosed pelitic, calcareous and carbonaceous rocks ranging from Precambrian (Manglaur formation) to Triassic (Saidu formation) (Ahmad et al., 1998).

CO2 mineral sequestration studies in the ultramafic rocks of northern Pakistan

Roughly two-thirds of Cuba's territory is karstic, with an abundance of limestone, marlstone, marble and other carbonaceous rocks. All these rocks are actively dissolved by surface runoff and groundwater instead of normal erosion.

Cuba's cave network offers spectacular karstic vistas

Metasedimentary rocks are represented by phyllites, siltstones, carbonaceous rocks, sandstones, grits and conglomerates.

Some properties and structure of the crystalline crust from superdeep drilling data (SG-3, SG-4, KTB)

If the oceans turn acid--as they are already doing--the only known way to reverse this is the slow weathering and dissolution of limestone mountain ranges and carbonaceous rocks into the sea, a process that takes millions of years.

Acid oceans: International scientists are now in little doubt about the cause of a threat confronting up to one-third of all marine life: the 27 billion tonnes of carbon dioxide released each year by human activity are gradually dissolving into the ocean's upper layers, turning them more acidic

Finer material is also derived from the downfall of finely laminated clayey carbonaceous rocks. The freeze-thaw processes taking place in the joints are the main agents responsible for the formation of rock falls.

Slope processes at the North Estonian Klint/Nolvaprotsessid Pohja-Eesti paekaldal

If chlorine is present it needs to be converted to a chloride salt and not hydrogen chloride unless wet carbonaceous rocks are involved.

Resource reclamation, recovery and reuse of military explosives and propellants: a small business-university consortium approach

Previous studies demonstrate that the complex geochemical interaction of auriferous fluids with the carbonaceous rocks probably led to gold precipitation [2,3].

Gwynfynydd's gold veins

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).

Eskers in the periphery of their distribution in North Estonia/Oosid nende levikuala perifeerias Pohja-Eestis

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