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The calc-alkaline magma series is one of two main subdivisions of the subalkaline magma series, the other subalkaline magma series being the tholeiitic series. A magma series is a series of compositions that describes the evolution of a mafic magma, which is high in magnesium and iron and produces basalt or gabbro, as it fractionally crystallizes to become a felsic magma, which is low in ...
Igneous rock, with gray groundmass and white phenocrysts marked. Orthoclase phenocrysts within a finer-grained matrix of a granite porphyry. The matrix or groundmass of a rock is the finer-grained mass of material in which larger grains, crystals, or clasts are embedded.
[1] [2] Each was dedicated to the worship of a particular god. It is also associated with saint days and holy festivals. [3] Panegyris is used in three ways: A meeting of the inhabitants from one town and its vicinity, a meeting of inhabitants of an entire province, district, or of people belonging to a particular tribe, and for national meetings.
A panegyric (US: / ˌ p æ n ɪ ˈ dʒ ɪ r ɪ k / or UK: / ˌ p æ n ɪ ˈ dʒ aɪ r ɪ k /) is a formal public speech or written verse, delivered in high praise of a person or thing. [1] The original panegyrics were speeches delivered at public events in ancient Athens.
The degree of deformation and metamorphism along with rock type determines the kind of cleavage feature that develops. Generally, these structures are formed in fine grained rocks composed of minerals affected by pressure solution. [1] Cleavage is a type of rock foliation, a fabric element that describes the way planar features develop in a ...
Conglomerate (/ k ən ˈ ɡ l ɒ m ər ɪ t /) is a sedimentary rock made up of rounded gravel-sized pieces of rock surrounded by finer-grained sediments (such as sand, silt, or clay). The larger fragments within conglomerate are called clasts, while the finer sediment surrounding the clasts is called the matrix.
Clinozoisite is a complex calcium aluminium sorosilicate mineral with formula: Ca 2 Al 3 (Si 2 O 7)(SiO 4)O(OH).It forms a continuous solid solution series with epidote by substitution of iron(III) in the aluminium (m3 site) and is also called aluminium epidote.
These rocks showed high-grade metamorphism because of the presence of magmatic water, exceeding 600 °C. This deformation depleted host rocks of 18 O, leading to further analysis of the ratio of 18 O to 16 O (δ 18 O). [11] Water in equilibrium with igneous melts should bear the same isotopic signature for 18 O and δ 2 H.