Earth sci lesson 3 Flashcards
Importance of Studying Rocks and Minerals
state
composed of rocks and minerals
terrestrial planet
outermost layer of our planet composed of the crust and the upper mantle
lithosphere
terrestrial planet, lithosphere
geosphere
naturally occurring aggregate or combi of minerals and mineraloids such as fossils and glass
rock
natural building blocks of Earth’s Lithosphere
rock
3 types of rock
igneous, sedimentary, metamorphic
latin “ignis” means
fire
are formed through cooling of magma or lava, 2/3 of earth’s crush
igneous rock
from solidified molten rock materials usually hard and crystalline
igneous rock
3 kinds of Solidification of Magma or Lava
below the surface: from a slow cooling magma
on the surface: from fast cooling lava
on the surface: from the consolidation of particles erupted by explosive volcanic activity
good crystallization (coarse-grained) may become plutonic or intrusive rocks
below the surface: from a slow cooling magma
examples of below the surface
granite, diorite, syenite
no visible crystals (fine grained)
may become volcanic or extrusive rocks
on the surface: from fast cooling lava
ex. of on the surface: from fast cooling lava
basalt, andesite