Rocks: Solid earth

I have studied Bowen's reaction series and understand the process of magmatic differentiation, that different types of minerals crystallize from magma systematically. I understand that during the crystallization process, the composition of magma continually changes...However, can you explain and help me understand how partial m ...continues

Ferromagnesian Silicates - olivine, pyroxene, amphibole, and biotite

In detail, how do olivine, pyroxene, amphibole, and biotite differ?

Radiometric age dating of a moon rock sample using K-40 and Ar-40.

What is the formula to calculate the age of a moon rock sample? For example, how would I calculate the age of a moon rock sample knowing the number of grams of potassium-40 and argon-40 with a given half-life in a closed system assuming no argon-40 was present when the rock was formed?

Earthquake questions

1) Post your answers to these questions: What causes earthquakes? Of the following factors, which do you think is the most reliable predictor of earthquakes? Explain your answer please. (a) recurrence interval (b) animal behavior (c) rock precursors 2) Post your answer to this question: Compare the use of the Mercalli ...continues

Stages in mountain belt formation. Investigate two mountain belts (or ranges) which have features that are distinctly different from each other.

Mountain Belt Formation Complete sections A and B of this appendix. A. Briefly describe each feature associated with mountain belts. Characteristics How it is related to mountain belt formation accumulation stage orogenic stage uplift stage block faulting erosion magm ...continues