The tholeiitic magma series is one of two main magma series in subalkaline igneous rocks, the other being the calc-alkaline series. A magma series is a chemically distinct range of magma compositions that describes the evolution of a mafic magma into a more evolved, silica rich end member. Rock types of the tholeiitic … See more Rocks in the tholeiitic magma series are classified as subalkaline (they contain less sodium than some other basalts) and are distinguished from rocks in the calc-alkaline magma series by the redox state of the magma they … See more Like all basalt, the rock type is dominated by olivine, clinopyroxene and plagioclase, with minor iron-titanium oxides. Orthopyroxene See more Tholeiite is named for its type locality near the municipality of Tholey, Saarland, Germany. See more Tholeiitic rocks are the most common igneous rocks in Earth's crust, produced by submarine volcanism at mid-ocean ridges and make up much of the ocean crust. Tholeiitic basaltic magmas are initially generated as partial melts of peridotite (olivine See more • Alkaline magma series • Petrology • Igneous differentiation See more WebApr 13, 2011 · A tholeiitic basalt composition with 18·2% MgO is multiply saturated with olivine and orthopyroxene on the liquidus at 20·5 kbar (Maaløe, 2004a). The forsterite …
The effects of cooling rate on texture and pyroxene chemistry in …
WebNote that tholeiitic basalts are basalts that show a reaction relationship of olivine to liquid which produces a low-Ca pyroxene like pigeonite or Opx. Both olivine tholeiites and quartz … WebJul 13, 2009 · The tholeiitic differentiation trend, which is often documented in the volcanic sequences of intra-oceanic arcs, is best reproduced by the LLD of an H 2 O-poor (∼0·5 wt … checkers corporate social responsibility
What is the difference between a tholeitic basalt and an
WebApr 18, 2009 · The identical K D values for the tholeiitic basalt (35R2) and basalt SC1 from Toplis and Carroll can be explained by similar bulk compositions. The shift to higher K D values for the alkali basalt (OB93-190) must be influenced by the different whole rock composition because the experimental parameters for both basalts were identically. WebMay 28, 2024 · What is tholeiitic basalt composed of? Tholeiitic basaltic lavas are characterized by calcic plagioclase with augite, pigeonite or hypersthene, and ... Andesite … WebJan 26, 2024 · Tholeiitic basalt are mainly attributed to the MOR's and oceanic island. While alkali basalt is attributed to Island arcs or collisional zones. If we talk about the … flash games sparatutto