breccia: see conglomerate conglomerate, in geology, sedimentary rock composed largely of pebbles or other rounded particles whose diameter is larger than 2 mm (.08 in.). Essentially a cemented gravel, conglomerates are formed along beaches, as glacial drift, and in river deposits.
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breccia

Coarse sedimentary rock consisting of angular or nearly angular fragments larger than 0.08 in. (2 mm). Breccia commonly results from processes such as landslides or geologic faulting, in which rocks are fractured. It can also be of igneous explosive origin (e.g., a volcanic breccia).

breccia [′brech·ə]

(petrology)

A rock made up of very angular coarse fragments; may be sedimentary or may be formed by grinding or crushing along faults.

breccia

Any stone composed of angular fragments embedded and consolidated in a finer ground. Numerous marbles owe their distinctive appearance to brecciation.

Breccia

cemented rock composed of angular fragments (sized 1 cm or more). Breccias may be composed of fragments from one rock (monomictic breccia) or several different rocks (polymictic breccia).

Breccias are volcanic (volcanogenic), sedimentary, or tectonic in origin. Volcanogenic breccias originate when the more liquid lava cements together the lava fragments which have formed during the crushing and breakdown of flowing viscous lava (lava breccia), during the agglomeration of tuff and other volcanogenic elastic materials (tuff breccia), and during the diagenesis of mud flow deposits in volcanic regions (lahars). Sedimentary breccias are formed in continental conditions during the cementation of talus deposits and mud-flow deposits from lahars, and during the collapse of the roofs of karstic cavities (karst breccia). A specific type of breccia is bone breccia, which originates in places where the mass destruction and burial of vertebrates has occurred. In maritime areas breccia originates as a result of the destruction of littoral rocks or reefs. Tectonic breccias (friction breccia) are formed in a rock stratum during tectonic movements when rock is crushed along the fractures. Large fragments in this case are usually buried in a finely granulated mass.

V. P. PETROV

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No references found	The indications would be consistent with the presence of a saber-toothed tiger, such as are still found among the breccia of our caverns; but the creature actually seen was undoubtedly of a larger and more reptilian character. The Lost World by Doyle, Sir Arthur Conan View in context I noticed that the smaller streams in the Pampas were paved with a breccia of bones but this probably is the effect of a gradual increase, rather than of the destruction at any one period. The Voyage of the Beagle by Darwin, Charles View in context	Breasted, James Henry breasting dolphin breastplate breaststroke breastsummer breastwork breath breath test breath-hold diving breath-of-life packet breathable Breathalyser breathe Breather breather membrane breather pipe breather-type asphalt felt breathing breathing apparatus breathing bag breathing cave breathing line Breathitt County Brébeuf, Jean de, Saint Brébeuf, Saint Jean de Breccia breccia dike breccia marble breccia pipe Brecelj, Bogdan Brèche de Roland Brecht Brecht, Bertolt Breck, Alan Breck, James Lloyd Breckinridge County Breckinridge, John Breckinridge, John C Breckinridge, John Cabell Breckinridge, Mary Breckinridge, Sophonisba Preston Brecknock Brecknockshire Brecksville Reservation Brecon Breconshire Breda Breda, Compromise of Breda, Declaration Breda, Declaration of Breda, Treaty of	breaths breaths breaths breaths breaths Breaths Per Minute breathtaking breathtaking breathtakingly breathtakingly breathy Breathy voice Breats Breats Breats Breats Breatstroke Breatstroke Breault Research Organization Breauté Breauté Breaux Bridge Crawfish Festival BREB Brebeuf Jesuit High School Brebeuf Jesuit Preparatory School Brebeuf News Network Brébeuf, Jean de, Saint Brébeuf, Saint Jean de BREC BRECC Breccia breccia dike Breccia International Minerals, Inc. breccia marble breccia pipe brecciate brecciate brecciated brecciated brecciates brecciates brecciating brecciating brecciation brecciation brecciations brecciations Brecelj, Bogdan Brecha Brecha de inflacao Brecha de inflacion Brèche de Roland Brecheinawc Brechen Brechen Brechnev Brecht Brecht Brecht, (Eugen) Bertolt (Friedrich) Brecht, (Eugen) Bertolt (Friedrich) Brecht, Bertolt

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The indications would be consistent with the presence of a saber-toothed tiger, such as are still found among the breccia of our caverns; but the creature actually seen was undoubtedly of a larger and more reptilian character.

The Lost World by Doyle, Sir Arthur Conan View in context

I noticed that the smaller streams in the Pampas were paved with a breccia of bones but this probably is the effect of a gradual increase, rather than of the destruction at any one period.

The Voyage of the Beagle by Darwin, Charles View in context

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breccia

Breccia