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freed2003 wrote: ↑October 14th, 2020, 8:32 pm

I had , which could be close enough.

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freed2003 wrote: ↑October 15th, 2020, 6:43 pm Cool thanks

What are 3 examples of igneous intrusions and how are they different?

Dikes: Cut across existing strata (usually) vertically
Sills: Intruded between and parallel to existing strata
Laccolith: Lens-shaped, causes uplift in the shape of a dome

UTF-8 U+6211 U+662F wrote: ↑October 15th, 2020, 8:13 pm

freed2003 wrote: ↑October 15th, 2020, 6:43 pm Cool thanks

What are 3 examples of igneous intrusions and how are they different?

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Dikes: Cut across existing strata (usually) vertically
Sills: Intruded between and parallel to existing strata
Laccolith: Lens-shaped, causes uplift in the shape of a dome

UTF-8 U+6211 U+662F wrote: ↑October 16th, 2020, 12:25 pm Explain the difference between mafic and felsic minerals. How are mafic and felsic minerals formed?

twoplustwoisten wrote: ↑October 18th, 2020, 9:28 pm

UTF-8 U+6211 U+662F wrote: ↑October 16th, 2020, 12:25 pm Explain the difference between mafic and felsic minerals. How are mafic and felsic minerals formed?

Felsic and Mafic rocks are types of igneous rocks, meaning they are formed by lava/magma cooling. Mafic (wordsmash of magnesium and ferric) rocks/minerals are generally heavier, have less Silica, and contain Magnesium and Iron, and Felsic (wordsmash of feldspar and silica) rocks/minerals are lighter in weight, have more Silica, and contain the elements for Feldspar (Idon'trememberoffthetopofmyhead) and Quartz (SiO2).