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Earth Science Expatriate's user avatar
Earth Science Expatriate's user avatar
Earth Science Expatriate's user avatar
Earth Science Expatriate
  • Member for 9 years, 6 months
  • Last seen more than a month ago
4 votes

What is the basis for the Geologic Time Scale

7 votes

Can volcanic gases be emitted in any other way besides volcanic eruptions

6 votes

How are minerals classified?

3 votes

How do you tell if smoky quartz has been irradiated?

4 votes
Accepted

What is the difference between subvolcanic rocks and plutonic rocks?

4 votes

Open Mining facility/operation GIS data

3 votes

Why are the mountains predominately grey or dark brown?

1 vote

What type of yellow-green stone is this?

2 votes

I found this huge rock crystal by the river have no idea what it is?

2 votes

is this a rose quartz

3 votes

Why do clouds have ceilings and bases?

3 votes

Is this platinum ore?

3 votes

Fault Lines in North America

1 vote

Can someone provide a map of Nazca lines with this image in it?

2 votes

Is this a fossil we found in a store?

1 vote
Accepted

Where on Earth does paleo-groundwater exist?

2 votes
Accepted

What type of fossil is this found at northern Ohio?

3 votes
Accepted

Source of Dresser Formation 3.5 Ga dating

3 votes

What is the rock I found on the Delaware river yesterday?

5 votes

Is every space group realized by some mineral?

6 votes
Accepted

How did the terms "acidic" and "basic" come to be associated with $SiO_2$ in igneous rocks?

4 votes
Accepted

How are deposits of metals like tantalum located?

7 votes
Accepted

What causes these circular swirls of islands?

5 votes

What is meant by inverted water table?

8 votes

Where do rivers like the Rio de la Plata end and the ocean begin?

8 votes
Accepted

Where can fluorite be found on Long Island, New York?

5 votes
Accepted

During an average winter, what part (if any) of the Mississippi River becomes unnavigable?

2 votes

Why are most minerals so rare?

3 votes

How is geological time divided into units?

2 votes

What kind of mine pit in northeastern Minnesota could make residue that turns water turn bright red?