when a diorite partially melts, which element(1)............ decreases in the melt as a(2).......... magma forms.
I have few options to choose from
a)iron
b)andesite
c)rhyolite
d)potassium
f)basalt
stop cheating
To determine which element decreases in the melt as a diorite partially melts and forms magma, we can analyze the composition of diorite and its melting behavior. Diorite is an igneous rock composed mainly of plagioclase feldspar, amphibole, and/or pyroxene minerals.
During partial melting, certain elements or minerals that have lower melting temperatures will melt first, forming a melt or magma. In contrast, other elements or minerals with higher melting temperatures may remain solid.
In the case of diorite, minerals rich in iron, such as amphibole or pyroxene, may melt and form a melt or magma. Therefore, element (1) iron may increase in concentration in the melt.
From the given options, only option (a) iron is a plausible answer as the element that decreases in the melt as a diorite partially melts and forms magma. Therefore, the answer is option (a) iron.