QUESTIONS: 1a. How many different cratons exist in this new world? ...

QUESTIONS:
1a. How many different cratons exist in this new world? How do you know? Color in each of these
areas with a different color and provide a simple legend for your colors.
Six
1b. How many pieces of different cratons make up Nesmith? How might this have occurred?
Three
2a. Which columns preserve cratonic sequences?
A, B, D, E, H, I, J
2b. What do these sections say about changes in eustatic sea level over time?
Transgressed from Cambrian to Permian, regressed from Permian to Present
3a. How many different continental landmasses were there in the Cambrian?
Three
3b. Which cratons were sutured together? How do you know?
Kingsbury, James, Nesmith; you can tell based on the fossils
3c. When did they rift apart? How can you tell?
Ordovician; based on the lithology
4a. At one point in time, Nesmith and Hewitt were sutured together. When did they begin moving
towards each other? How do you know?
Ordovician; volcanics in C, ash deposits in G
4b. When did they begin to collide?
Devonian
4c. When did they become completely sutured?
Carboniferous
4d. When did they rift apart?
Cretaceous
5a. What kind of feature do you think column L represents? Why?
An island arc; gabbro basement, basalt flows
5b. When did L form?
Permian
5c. When did it begin to collide with James?
Tertiary
6. What is the age of the mountain belt to the southeast of column D?
Jurassic-Cretaceous
7. When did the volcanics on Kingsbury start? What do you think caused this to happen?
Quaternary; the collision of the island arc with James caused the direction of subduction
to switch.
8. How many different orogenic events have occurred during this world's history?
Eight
9. Draw a paleogeographic map of the mock world for the Cambrian, Carboniferous and the
Cretaceous. Each map should show the relative location of the continents and the location of
major mountain belts (if they existed at that time).
See teacher's key
PLANET SALISBURY
PRESENT DAY TECTONIC AND PHYSIOGRAPHIC REGIME
KINGSBURY
A
MORSE
B
D
E
L
C
K
F
G
H
I
J
HEWITT
JAMES
LEGEND
Continental crust boundary
Mid-ocean
Ridge
Subduction
zone
Transform
Fault
N
Mountains
Young
Old
B
R
R
Eroding Craton
Divergence Passive Margin
A
Q
Q
B
T
A
T
K
K
J
J
B
Pm
Pm
C
C
Passive
Margin
D
B
A
D
S
S
O
O
B
C
A
C
Cratonic Basement
Cratonic Basement
1.5 by
2.2 by
Divergent
Convergent
Ash Layers
Flysch
Molasse
Active Margin
Andesite
Convergence
Convergence
Suture
Suture
Tr
A
Eroding
Craton
Tr
Columnar
Basalt
Arkose
Igneous Rocks
Granite
Diorite
Gabbro
Passive Margin / Cratonic
Non-deposition
Sandstone
Siltstone
Shale
Limestone
IDEALIZED SEA-LEVEL TREND
Continental
Interior
Deposition
Time
Time
Erosion
Continental
Margin
E
F
G
H
C
D
I
L
B
K
A
J
B
A
C
R
R
R
Q
Q
Q
T
T
T
K
K
K
J
J
J
Tr
Tr
Tr
Pm
Pm
Pm
C
C
C
D
D
D
S
S
S
O
O
O
C
C
C
2.7 by
2.7 by
2.7 by
D
E
F
R
R
R
Q
Q
Q
T
T
T
K
K
K
J
J
J
Tr
Tr
Tr
Pm
Pm
Pm
C
C
C
D
D
D
S
S
S
O
O
O
C
C
C
2.4 by
1.8 by
1.8 by
H
G
I
R
R
R
Q
Q
Q
T
T
K
K
J
J
Tr
Tr
Pm
Pm
C
C
D
D
S
S
O
O
O
C
C
C
1.8 by
T
K
J
Tr
Pm
C
D
S
1.2 by
1.5 by
K
J
L
R
R
R
Q
Q
Q
T
T
T
K
K
K
J
J
J
Tr
Tr
Tr
Pm
Pm
Pm
C
C
D
D
S
S
O
O
C
C
1.5 by
280 my
2.7 by
A
A
A
A
B
B
B
B
D
E
L
E
E
CC
E
L
F
KK
D
CC
F
F
G
KK
G
G
II
JJ
I
I
F
G
H
JJ
H
Present
Cretaceous
A
A
D
B
B
A
D
A
BB
E
L
CC
G
G
KK
E
F
E
CC
F
G
H
II
JJ
F
H
J
J
Permian
Carboniferous
D
D
A
E
A
B
B
F
G
CC
II
A
F
G
H
G
K
C
JJ
II
2.4 by
G
H
Cambrian
Ordovician
2.7 by
E
A
E
B
B
JJ
F
G
KK
II
KK
E
1.8 by
1.5 by
1.2 by
280 my
F