Lava Flashcards
1
Q
Lava
A
Molten rock that cools at the earth’s surface
2
Q
Pahoehoe
A
Lava flows have a smooth or ropy surface
3
Q
Nuee ardente
A
An incandescent, gaseous, pyroclastic cloud of magma droplets and ash. When cooled and solidified the deposit is called ignimbrite
4
Q
Pyroclast
A
An individual fragment ejected during an eruption
5
Q
Aa
A
Lava flows have a rough, blocky. jagged surface
6
Q
Name 3 types of pyroclastic material, their size and what they form once consolidated
A
Ash less than 2mm - pyroclastic rock tuff
Lapilli 2mm to 64mm- lapilli tuff
Bombs and blocks over 64mm- pyroclastic rock agglomerate near crater
