دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a conglomerate rock composed largely of angular fragments greater than 0.08 inch (2 millimetres) in diameter.

fragmented (not wear rounded) grains. Rock along moving faults may have this texture.

any of many types of conglomerates.

n: a sedimentary rock composed of fragments of preexisting rocks. The principal distinction among clastics is grain size. Conglomerates, sandstones, and shales are clastic rocks.

abbr: conglomerate;used in drilling reports.

n: a sedimentary rock composed of pebbles of various sizes held together by a cementing material such as clay. Conglomerates are similar to sandstone but are composed mostly of grains more than 2 millimetres (0.08 inch) in diameter. Most conglomerates are found in discontinuous, thin, isolated layers;they are not very abundant. In common usage, the term conglomerate" is restricted to coarse sedimentary rock with rounded grains;conglomerates made up of sharp, angular fragments are called breccia.

poorly sorted collection of sediments, generally formed in a very high energy environment. Similar to sandstones but have much larger grains (pebbles grade 4 to 64 mm). The space between the grains may be partly or completely filled with sand grains.

n: coarse-grained. poorly sorted sedimentary rock derived from sediments deposited in alluvial fans;a type of conglomerate.

n: 1. in rock, the fine-grained material between larger grains in which the larger grains are embedded. A rock matrix may be composed of fine sediments, crystals, clay, or other substances. 2. the material in which the diamonds on a diamond bit are set.

n: The finer grained, interstitial particles that lie between larger particles or in which larger particles are embedded in sedimentary rocks such as sandstones and conglomerates.

the physical structure of a clastic rock.

n: a thick sequence of soft, ungraded, cross-bedded, fossiliferous marine and terrestrial conglomerates. sandstones, and shales derived from the erosion of growing mountain ranges.