Question

Why is bowen's reaction series separated into a continuous and a discontinuous side?

Answer 1

Bowen’s Reaction Series is separated into a continuous and a discontinuous series, why?Bowen's Reaction Series is separated into continuous and discontinuous branches because minerals that crystallize at different times and under different conditions have different compositions and structures, which affects the outcome of their reaction with the remaining melt.Explanation:Continuous series refers to the minerals that form during the same range of temperatures and pressures, and discontinuous series refers to the minerals that form under different conditions but continue to crystallize at lower temperatures. Bowen's Reaction Series separates minerals based on their temperature of crystallization and the order in which they crystallize from magma.Bowen's reaction series can be broken into two groups: discontinuous and continuous. Because different minerals grow in different conditions, each group is further separated into categories. Bowens' reaction series helps to understand the sequence of mineral formation.

Answer 2

Step-by-step explanation:The Bowen response collection is separated into branches- The continuous series describes the evolution of the plagioclase feldspars as they evolve from being calcium to sodium-wealthy. The discontinuous collection describes the formation of the mafic minerals olivine, pyroxene.

n Bowen’s reaction collection the Discontinuous series begins with olivine, then pyroxene, amphibole, and biotite. in this “response sequence” every mineral in the series is replaced by using the following one as the molten cools. As Bowen put it, “The disappearance of minerals inside the order they appear is the essence of the reaction series.” Olivine bureaucracy crystals, which then react with the relaxation of the magma as pyroxene paperwork. At a sure factor, all olivine is absorbed and located only in pyroxene. The pyroxene then reacts with the liquid and the amphibole crystals replace it after which update the biotite amphibole.

Non-stop collection of Bowen’s response collection is a plagioclase feldspar. At excessive temperatures, the excessive-calcium variety anorthite mineral bureaucracy. Then as temperatures fall it is changed by means of sodium-rich sorts particularly- Bytownite, Labradorite, Andesine, Oligoclase, and Albite. as the temperature maintains to fall, those two series merge, and greater minerals crystallize on this order: Alkali feldspar, muscovite, and quartz.

Bowen’s response series:

The purpose for this evolution of minerals is the dropping temperature of the magma that permits silica to shape more complex structures. you could see that Olivine with its remoted silica tetrahedrons paperwork at the best temperatures, and as temperatures drop silica tetrahedrons first manage to enroll in collectively in chains (pyroxenes), then in ribbons shape (amphiboles), after which in micas, a sheet shape. subsequently, within the reaction series at the bottom temperatures the 2 branches merge and minerals paperwork which might be not unusual to Felsic rocks – muscovite mica, orthoclase feldspar, and quartz.

The complete collection is not discovered in nature, however many magmatic rocks display elements of the series. the principle limitations are the nation of the liquid, the price of cooling, and the tendency of mineral crystals to settle under gravity.