Planetary Science

Question 1

What are C-Type Chondrites?

Answer 1

Carbonaceous

Question 2

What are S-Type Chondrites?

Answer 2

Ordinary

Question 3

What are Primitive Achondrites?

Answer 3

Partially melted asteroidal samples

Question 4

What are HED’s?

Answer 4

Protoplanet Vesta

Question 5

What are the four types of Meteorites from differentiated bodies?

Answer 5

Aubrites, Ureilites, Angrites, and Brachinites

Question 6

Where are irony meteorites from?

Answer 6

Core/core-mantle boundary of differentiated bodies
Or impact related

Question 7

How are meteorite types determined?

Answer 7

As with all rocks: Texture, age, chemistry, mineralogy
3-oxygen isotope ratio is determining factor

Question 8

What are the two main types of Lunar meteorites?

Answer 8

Basaltic and Feldspathic (Ca-Feldspar)
Volatile poor

Question 9

What is the moon’s crust made from?

Answer 9

Anorthite rich (Ca-Feldspar)

Question 10

What is the moon’s mantle made from?

Answer 10

Olivine and Clinopyroxene rich

Question 11

Why are there (“mare”) basalts on the lunar surface?

Answer 11

Fe-rich magmas, heated by radioactive decay and adiabatic decompression

Question 12

What is adiabatic decompression?

Answer 12

Decompression due to fissure formation produced by global lunar cooling (Andrews-Hanna et al., 2014)