Reconstruction Of Plate Tectonics- L4

Question 1

-Eurasia Formed a stable continent area (NE-SW orientation)
-Taiwan, North palawan and continental shelf currently NW of borneo were situated on the outer part of a stable passive margin
- Sundaland was separated from eurasia by proto-SCS

Answer 1

50 Ma

Question 2

Date when PSP was rotating rapidly

Answer 2

50 and 45 Ma

Question 3

• PSP ceased rotation and the west philippine- Celebes sea- Makassar strait basin was opening, accomodated by subduction of the proto- south china sea

Answer 3

40 and 35 Ma

Question 4

-SCS was opening northward movement of australia trapped indian oceanic crust in the future molucca sea after collisions in the sulawesi and halmahera regions

Answer 4

30 and 25 Ma

Question 5

Borneo was rotating. Renewed rotation of the PSP was accomodated by strike slip motion on the Sorong Fault, with splays moving blocks of the bird’s head microcontinent west towards Sulawesi.

Answer 5

20 and 15 Ma

Question 6

Borneo rotation was completed. Molucca sea was gradually eliminated by subduction on both sides. Inner banda arc propagated east, with extension in the north and south banda sea regions

Answer 6

10 and 5 Ma