Geology 101 (18 )
Other Sedimentary Rocks: Biochemical
Consist of cemented-together shell fragments
Two main types: Calcite based (CaCO3) Limestone and Silica based (SiO2) Chert
Cool Replacement Chert
Silica commonly replaces existing material
o Can r
Notes from 4/2/13
Convergent boundary = Stratovolcano/composite which gives off dust and ash (andesite) and is
built of layers of lava and pyroclastics
500-600 active volcanoes on earth
Submarine volcanism=@ mid ocean ridges and is volumetrically most imp
Erosion the process by which materials are removed from one location and transported to
another location (water, wind)
So, here it is: if a particle is loosened, chemically or mechanically, but stays put, call it
weathering. Once the particle starts movi
Section 3: Minerals
What are the physical properties of minerals?
Definable chemical composition
How can we use these properties to identify an unknown mineral? Page 75
To help tell what type of mineral each
Section 2: Earth Structure
What are the compositional layers of our planet?
There are three compositional layers of the earth/ change of compositional layers
1. Crust made up of mostly silicon - 28% and oxygen 47% (80% of total)
Silicates make up over 95%
How do glaciers move?
-If snow accumulates to ~ 50 m thick, pressure compacts it into ice, and then it can flow slowly
-Glaciers ALWAYS flow away from the highest point.
-Gravity causes the flow.
-Ice is ALWAYS flowing toward
Question number 13
I would like to dispute this question and ask for unconformity to work as an answer according to
google images and my class notes
Geology Extra Credit - (Merapi - Java, Indonesia)
Mount Merapi is one of the worlds most active stratovolcano and is located in the center
of the island Java in Indonesia (Marshall, Andrew). Indonesia is directly located on the ring of
fire which explains
Section 1: What is geology? - Study of the origin, history, composition and structure of the earth
What are the principles of Geology?
Geologic systems and cycles
Humans and geologic agents
Weathering and Soils
1. What are the major physical weathering processes? The major chemical weathering
Starts with the removal of sediments loose pieces of mineral and rock- all sizes
Jointing (when pressure is released)