A rock composed of angular fragments either of the same mineral or of different minerals, etc., united by a cement, and commonly presenting a variety of colors.
Literally means 'rubble' and implies a rock deposited very to the source area. Also applied to angular volcanic rocks from a volcanic vent.
a group of rocks consisting of angular, poorly sorted fragments.
A type of rock whose components are angular in shape, as distinguished from a conglomerate, whose components are worn in rounded shapes.
A rock composed of angular fragments of other rock cemented together.
Rock composed of sharp-angled fragments made up of the same material and embedded in a fine-grained matrix.
a sedimentary rock containing abundant angular pebble, cobble, and boulder-sized particles.
Coarse sedimentary rock consisting of angular fragments; or rock broken into angular fragments by faulting.
a type of sedimentary rock that is made of angular fragments of rock or mineral.
Mixture of lunar soil and rock fragments formed by impact or high pressure.
A clastic rock composed of a matrix and angular clasts. A fine example of a breccia are the Devonian deposits at Siccar Point. See also conglomerate.... More
(bret' chee a) - A rock consisting of broken fragments of rock (clasts) cemented together by a fine-grained matrix. Formed from regolith during subsequent impacts.
Rock consisting of sharp fragments in a fine grained matrix.
A sedimentary rock containing angular rock fragments which are greater than 2mm across.
a sedimentary rock consisting of variable sized angular, particles that are transported a short distance to the site of deposition. These particles may be transported by streams or mudflows.
Rock composed of angular fragments of older rocks cemented together.
clastic rock composed of particles more than 2 millimeters in diameter and marked by the angularity of its component grains and rock fragments.
a rudaceous rock consisting of sharp fragments embedded in clay or sand
a mechanically-formed rock, very similar to a conglomerate, and consisting of larger or smaller fragments of rock embedded in a common matrix
an amalgamation of fragments of andesite scattered within a matrix of welded tuff
a rock consisting of angular fragments of any kind, united by a matrix
a rock formed out of pieces of other rocks during an impact
a rock that is composed of broken angular rock fragments that is contained in a fine matrix (cement)
a rock which is formed when fragments of rock re-cement themselves together
a sedimentary rock which contains large angular rock fragments
A rock consisting of many angular fragments, some of which may have different compositions.
a rock type with angular fragments of one composition surrounded by rock of another composition or texture
A rock composed of large, angular rock fragments with finer-grained material in between.
A name applied to both granite and conglomerate stone because of the coarse and angular particles present.
sedimentary rock composed of gravel size or larger angular fragments.
A sedimentary rock composed of angular rock fragments cemented together.
It is a rock which has been broken mechanically, hydraulically or pnewumatically into angular fragments and re-cemented. Adjective: Brecciated.
A rock made from mineral fragments cemented together by the heat of meteoroid impact.
A rock consisting of fused pieces of smaller rocks.
A sedimentary rock made up of large angular fragments.
Fragments of rock, generally angular in a fine grained matrix, or a matrix of cementing material. Breccias include tectonic breccias, clastic breccias and volcanic breccias
A rock type comprised of often large angular fragments of pre-existing rock and set within a finer-grained rock matrix or cement.
a rock made up of angular fragments enclosed in a finer-grained matrix.
Rock made of highly angular, course fragments.
a coarse-grained clastic rock composed of angular fragments.
Rock made from pieces of rocks formed earlier. | Back to Student Center
A rock consisting of angular fragments in a finer grained matrix which may or may not be similar to the larger fragments; it may be formed from any rock type by fracturing (in a fault), explosion (volcanic), intrusion ( intrusion breccia) or sedimentation (scree slope). Indicates that they did not travel far from where they fractured.
rock consisting of fragments, more or less angular, in a matrix of finer-grained material or of cementing material
Rock consisting of angular, coarse fragments embedded in a fine-grain matrix.
See Sedimentary breccia; Volcanic breccia.
A rock in which angular fragments are surrounded by a mass of fine-grained minerals.
Angular fragments of rock produced by movement along a fault or explosive igneous activity. The material which surrounds the fragments and cements them together is called matrix and might be vein minerals, igneous material or very fine rock fragments.
Rock formed by large blocks of hardened lava, embedded in volcanic ash.
A rock characterized by course, angular fragments. The fragments are formed either by a crushing and natural recementing essentially in place or by the deposition of angular pieces that become consolidated.
Consolidated gravel composed of broken, angular particles.
broken fragments of rock (clasts) cemented together by a fine grain matrix Cape York meteorite made famous by arctic explorer Robert Peary
A coarse-grained rock composed of angular fragments of pre-existing rocks.
A clastic rock in which angular fragments are surrounded by a fine-grained matrix or minerals cement.
rock composed of angular rock fragments with a size greater than 2 mm.
A rock composed of fragments of earlier rocks bonded together.
Breccia is a type of rock that is composed of rough, angular pieces of broken-up, older rocks. Impact craters produce breccia.
Boulders, glacial rock debris, usually deposited on mountain summits
A rock made up of highly angular coarse fragments. May be sedimentary or formed by crushing or grinding along faults.
type of rock formed of sediments and small rocks cemented together
A rock in which angular fragments are surrounded by a mass of finer-grained material. Breccias may form by explosive volcanic action, by structural deformation (a â€œfault brecciaâ€), by intrusive action (where the intrusive rock incorporates fragments of country rock), or by hydrothermal processes (where wall rock fragments are incorporated by vein material).
volcanic?r sedimentary rock consisting of large angular pieces in a fine-grained matrix
A course-grained rock, composed of angular, broken rock fragments held together by a mineral cement or a fine-grained matrix.
blocks of sandy sediment and fossils cemented together.
A rock dominated with angular fragments within a finer-grained matrix.
Coarse grained sedimentary rock composed of cemented angular rock fragments.
A conglomerate composed of angular grains.
One of the 2 main types of rudaceous rocks, consisting of angular fragments implying minimum transport of material.
Breccia (IPA: , ) is typically a sedimentary rock composed of angular fragments from a previous rock structure, cemented in a matrix that may be of a similar or a different material. It is therefore a clastic rock.