3 Answered Questions for the topic igneous

07/19/19

Is porphyritic texture always indicative of a 2 stage cooling process?
Is porphyritic texture always indicative of a 2 stage cooling process? Can't the phenocrysts and groundmass be formed at the same time depending upon the chemical constituents forming the rock? The... more
Follows • 1
Expert Answers •1

07/13/19

What processes cause basalt to form a columnar structure?
I have run across many pictures of rocks that look like almost perfectly carved columns. For example: the Twyfelfontein Organ Pipes, the Basaltic Prisms of Santa Maria Regla, and the waterfall... more
Follows • 2
Expert Answers •1

05/14/19

How did the terms "acidic" and "basic" come to be associated with $SiO_2$ in igneous rocks?
Students of geology are introduced to in their petrology course, (or used to be), to the terms "acidic", "basic", and the associated term "intermediate" in relation to... more
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.