GopSea: Midterm Examination

Question 1

The paleo-tethys subducted under this terrane

Answer 1

asiatic hunic terrane

Question 2

the meso-tethys subducted under this terrane

Answer 2

cimmerian terranes

Question 3

during this time, there are changes in the tectonics due to the collision of India to Eurasia

Answer 3

Eocene

Question 4

In this part of Southeast Asia, clockwise rotation occured as a result extrusion tectonics

Answer 4

Indochina

Question 5

The Ninety-East Ridge was once a _ separating India and Australia

Answer 5

transform fault

Question 6

These are markers of suture zones except one:

a. uplifted oceanic crust
b. thrust fault
c. blue schist
d. uplifted marine sediments
e. active volcanic arc

Answer 6

e. active volcanic arc

Question 7

Because of this event, SEA transitioned from a collisional regime into extensional regime

Answer 7

Himalayan Orogeny

Question 8

This phenomenon is observed in the reversal of the displacement of faults

Answer 8

Fault Polarity Reversal

Question 9

Kalimantan is present day

Answer 9

Borneo

Question 10

Burma is present day

Answer 10

Myanmar

Question 11

Select which one does not have active volcanism:

a. sumatra
b. java
c. halmahera
d. sangihe
e. malayan peninsula

Answer 11

e. malayan peninsula

Question 12

this fault serves as the suture zone between Western Burma Block and the rest of Southeast Asia

Answer 12

Sagaing Fault Zone

Question 13

of the selection below, which one is the oldest rock:

a. E. Malayan Granite
b. SW. Thailand -E Burma Granite
c. N. Thailand - W. Malayan Granite
d. The Philippine Ophiolites
e. Both A and D

Answer 13

c. N. Thailand - W. Malayan Granite

Question 14

Of the selection below which one is not part fo the Ophiolite sequence:

a. peridotite
b. gabbro
c. sheeted dikes
d. chert
e. none of the above

Answer 14

d. chert

Question 15

the Bentong-Raub Suture serves as the boundary between

Answer 15

Indochina and Sibumasu

Question 16

Java Fault, Sumatra Fault, and the Philippine Fault are:

Answer 16

Trench Parallel Faults

Question 17

the western belt granites are:

Answer 17

I-type granites and S-type granites

Question 18

these describe S-type Granites except one:

a. lower aluminum levels
b. lower levels of Na and Ca
c. results from the partial melting of sedimentary rocks
d. all of the above

Answer 18

a. lower aluminum levels

Question 19

this part of SEA contains most, multiple different fold belts:

Answer 19

Indochina

Question 20

these structures would indicate a collisional regime except:

a. trough
b. trench
c. fold belts
d. tilted marine sedimentary basins
e. ophiolites

Answer 20

b. trench

Question 21

the Sorong Fault Zone is a:

Answer 21

Left Lateral Strike-slip Fault

Question 22

the Sunda Trench is collectively composed of:

Answer 22

java trench and sumatra trench

Question 23

which one does not belong to the group:

a. sumatra arc
b. java arc
c. philippine arc
d. malaysian peninsula
e. none of the above

Answer 23

d. malaysian peninsula

Question 24

In an area with multiple collisions and geological disruptions like Indochina, most likely the drainage pattern would be?

Answer 24

Dendritic pattern

Question 25

These are currently on a collision course closing remnants of the Molluca Sea Plate

Answer 25

Halmahera and Sangihe Arcs

Question 26

During this time Australia starts the separation from the Gondwana:

Answer 26

Cretaceous

Question 27

the continents North America, Eurasia, Kazakhstan, and Siberia composes this plate a. greenland b. laurasia c. gondwana d. avalonia e. none of the above

Answer 27

e. none of the above

Question 28

the boundary between these blocks serves as pathway for the Luoc/Red River

Answer 28

indochina and south china

Question 29

this country is in the eastern boundary of Laos:

Answer 29

Vietnam (?)

Question 30

These countries have claims or territory in Borneo except: a. Brunei b. malaysia c. indonesia d. philippines e. vietnam

Answer 30

e. vietnam

Question 31

In what direction does the boundary between Indo-Australian diverge from Antarctica?

Answer 31

Northeast

Question 32

When did Cenotethys closed down?

Answer 32

Eocene

Question 33

this was a triple junction, accommodating the northward rifting of India; a. ninety-east ridge b. mid-indian ridge c. southeast indian ridge d. southwest indian ridge e. none of the above

Answer 33

e. none of the above

Question 34

this separates West Burma from the rest of Sunda Plate a. sagaing fault b. red river fault c. bentong raub suture d. aliaoshan suture e. none of the above

Answer 34

e. none of the above

Question 35

these describe I-type Granites except one: a. typically lower aluminum levels b. lower levels of Na and Ca c. Results from the partial melting of igneous rocks d. all of the above e. none of the above

Answer 35

b. lower levels of Na and Ca