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, 3 months
  • Last seen more than a month ago
28 votes

Why are hail storms always brief?

17 votes

How high can a mountain possibly get?

13 votes

How long does it take for a stone to alter?

9 votes

What is the geologic origin of Cryolite, and could there be more?

8 votes

What's the diference between claystone, silt, mud, mudstone, mudrock, clay, shale and siltstone?

8 votes

A circle shape in Madagascar

8 votes

Why do some planets have lots of $\mathrm{N_2}$ and others none?

8 votes
Accepted

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

8 votes

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

7 votes
Accepted

What causes these circular swirls of islands?

7 votes

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

6 votes

How are minerals classified?

6 votes
Accepted

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

6 votes

Permeability of well screen as a limitation to a slug-in test

6 votes
Accepted

Composition of Martian Crust

6 votes
Accepted

How straight is the Kola superdeep borehole?

5 votes
Accepted

How was it possible that CO2 levels were higher nearly 650,000 years ago?

5 votes

How do rivers last so long in dry weather?

5 votes

Why does Google maps (in terrain mode) space thier topo lines 80 feet apart?

5 votes

Is every space group realized by some mineral?

5 votes

What is meant by inverted water table?

5 votes
Accepted

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

4 votes
Accepted

How are deposits of metals like tantalum located?

4 votes

Open Mining facility/operation GIS data

4 votes
Accepted

What is the difference between subvolcanic rocks and plutonic rocks?

4 votes

What is the basis for the Geologic Time Scale

4 votes

viable geothermal energy supply from exhausted fracked gas wells?

4 votes

Underwater rock conduit

4 votes
Accepted

Fossil or Beef Limestone?

4 votes
Accepted

Is there any case that changed from earthquake safe zone to danger zone?