These rocks are often subdivided into conglomerates and breccias. The major characteristic that divides these two categories is the amount of rounding. The gravel sized particles that make up conglomerates are well rounded while in breccias they are angular. Conglomerates are common in stratigraphic successions of ...
Regolith breccias with similar protoliths are also common. Mare basalts come in three distinct series in direct relation to their titanium content: high-Ti basalts, low- Ti basalts, and Very Low-Ti (VLT) basalts. Almost all lunar rocks are depleted in volatiles and are completely lacking in hydrated minerals common in Earth rocks.
Breccia is a clastic sedimentary rock composed of angular fragments of older rocks joined together by smaller particles or bonded by mineral cement. The fragments are usually around two millimeters or larger. It forms where angular, broken fragments of mineral or rock debris accumulate. The angular shape of the particles ...
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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.
Breccia: 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.
Mar 12, 2013 ... Breccia is a type of rock formed of broken fragments of minerals or rock cemented together by a fine-grained matrix. The matrix may be similar to or different from the composition of the fragments. Rocks formed by sticking together pieces of previous rocks (clasts) are called clastic rocks. There are two types ...
Breccia is a rock formed from angular gravel and boulder-sized clasts cemented together in a matrix. The angular nature of the clasts indicates that they have not been transported very far from their source. There are several modes of formation for breccia. Some represent consolidated material accumulated on steep hill ...
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