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breccia    
n. 角砾岩,角蛮岩

角砾岩,角蛮岩

breccia
n 1: a rudaceous rock consisting of sharp fragments embedded in
clay or sand

Breccia \Brec"cia\, n. [It., breach, pebble, fragments of stone,
fr. F. br[`e]che; of German origin. See {Breach}.] (Geol.)
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.
[1913 Webster]

{Bone breccia}, a breccia containing bones, usually
fragmentary.

{Coin breccia}, a breccia containing coins.
[1913 Webster]


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  • Breccia - Wikipedia
    Breccia is composed of coarse rock fragments held together by cement or a fine-grained matrix [5] Like conglomerate, breccia contains at least 30 percent of gravel -sized particles (particles over 2mm in size), but it is distinguished from conglomerate because the rock fragments have sharp edges that have not been worn down [6] These indicate that the gravel was deposited very close to its
  • Breccia : Classification, Composition, Formation, Properties ,Uses
    Sedimentary Breccia Sedimentary breccia is a type of clastic sedimentary rock which is fabricated from angular to subangular, randomly orientated clasts of different sedimentary rocks A conglomerate, by using evaluation, is a sedimentary rock composed of rounded fragments or clasts of pre-existing rocks Both breccia and conglomerate are composed of fragments averaging greater than 2
  • Breccia: Sedimentary Rock - Pictures, Definition, Formation
    Breccia is a clastic sedimentary rock composed of large angular fragments and a matrix of smaller material and cement It can form in a variety of ways
  • BRECCIAS - Earth Sci
    An impact breccia is “a breccia with clastic matrix or crystalline matrix (derived from the crystallization of impact melt) containing lithic and mineral clasts of different degree of shock metamorphism excavated by an impact from different regions of the target rock section, transported, mixed, and deposited inside or around an impact crater
  • Breccia | Igneous, Sedimentary, Metamorphic | Britannica
    Breccia, lithified sedimentary rock consisting of angular or subangular fragments larger than 2 millimetres (0 08 inch) It differs from a conglomerate, which consists of rounded clasts A brief treatment of breccias follows For full treatment, see sedimentary rock: Conglomerates and breccias
  • Breccia Rock Geology and Uses - ThoughtCo
    Learn what breccia rock is, including its composition, geology, uses, and difference from conglomerate rock
  • Breccia: Identification, Pictures Info for Rockhounds
    Breccia is a clastic sedimentary rock made from many different sizes of angular grains, many of which are gravel-sized or larger These grains are fragments of other rocks, bound together by cement which is typically silica or calcite Its angular or subangular grains differentiate it from conglomerate
  • Where Is Breccia Found? Key Geological Locations
    Breccia forms in a wide range of geological settings, from the base of cliff faces and volcanic vents to the floors of meteorite craters and deep underground cave systems Unlike its rounded cousin, conglomerate, breccia is defined by angular fragments larger than 2 mm cemented together That angularity is the key clue: it means the rock pieces weren’t transported far enough by water or wind
  • 35 Facts About Breccia
    Interesting Facts about Breccia Breccia has some intriguing characteristics and occurrences that make it a subject of interest for geologists and rock enthusiasts 21 Color variety: Breccia can come in a wide range of colors, depending on the minerals present in the clasts and matrix 22 Textural diversity: The texture of breccia can vary greatly, from coarse and rough to fine and smooth 23
  • What Is a Breccia Stone? - Stone Forensics
    Breccia stone has long been used in architecture and design, from ancient Roman columns to modern luxury baths But what exactly is breccia, and how can a stone restoration craftsman identify and work with it effectively? Let’s dive into both the geological and practical aspects of this fascinating material





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