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Correlation 2 > GOP > Flashcards

GOP Flashcards

1
Q

3 major plates surrounding the PH

A

Pacific
Eurasian
Indo-Australian

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2
Q

Age of Pacific Plate

Rate of movement

A

150 MY (Late Jurassic)

80mm/yr

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3
Q

Kinematic Reorganization in Pacific Plate

A

43 MY (Eocene) 50⁰ Counter Clockwise Rotation from NNW to WNW

5 MY (Late Pleistocene) - 10⁰ counter CW Rotation

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4
Q

Pacific Plate subducts into

A

Eurasian Plate along Japan

PSP along Bonin-Marianas yap Trench

Indo-Australian Plate east of New Zealand

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5
Q

Eurasian Plate

Rate of movement

A

3mm/yr

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6
Q

Indo-Australian Plate

Rate of movement
Motion Direction

A

107mm/yr

North

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7
Q

Separation of IN and AU

A 
150 MY (Late Jurassic)
Cessation 43 MY (Early Eocene)
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8
Q

Submarine Ridges in PSP

A

Palau-Kyushu Ridge

Izu-Bonin Ridge

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9
Q

3 submarine plateaus in WPB

A

Benham Rise
Urdaneta Plateua
Anami and Oki-Daiko Ridge

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10
Q

Age of WPB

A

60-35 MY Paleomagnetism

53-42 MY Deep Sea Drilling

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11
Q

An extinct MOR in WPB

A

Central Basin Fault

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12
Q

Stages of Opening in WPB

A

60 and 45 MY at NE-SW 4.4cm/year

45 and 35 MY at NS 1.8 cm/yr

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13
Q

Origin of WPB

A

Trapped Ocean Basin

Back-arc Basin Model

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14
Q

What basin opened at 30 Ma and 10 Ma?

When did the opening stopped?

A

Parece Vela Basin - 30 Ma
Shikoku - 10 Ma

Opening ceased at 17 Ma

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15
Q

Poorly known portion of on the southern

extremity of the plate

A

Ayu Basin

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16
Q

Opening of Mariana Basin started at ___ Ma.

A

6 Ma

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17
Q

This basin is considered as a relic of arc of

middle Eocene to Oligocene age. It traversed the PSP for 2500km

A

Palau-Kyushu Ridge

18
Q

When did the transform fault in Palau-Kyushu Ridge turned into a subduction?

a. Eocene
b. Oligocene
c. Miocene
d. Pliocene

A

43 Ma

a. Eocene

19
Q

Subduction of Palau-Kyushu Ridge retreated eastward at ___ Ma

20
Q

This basin is the eastern limit of the Shikoku Basin

A

Izu-Bonin Ridge

21
Q

The Izu-bonin Ridge splits into two branches towards the south

A

West Mariana Ridge

East Mariana Ridge

22
Q

An ancient volcanic arc active between 20 - 9 Ma

A

West Mariana Ridge

23
Q

Present day kinematics of PSP with respect to Eurasia

Relative displacement rate that varies from N to S along the western edge of the PSP, from ___ cm/yr in the latitude of the Nankai Trough to around ___ cm/yr on the southern end of the Philippine Trench

Relative displacement direction whose azimuth is directed N55W near Taiwan with a linear velocity around __cm/yr

A
  1. 3cm/yr
  2. 9cm/yr
  3. 7cm/yr
24
Q

Which of the following is false?

a. To the North, PSP subducts under the Japanese Archipelago along Nankai and Ryukyu Trench
b. To the SW, PSP subducts into PH Archipelago along PH Trench System
c. PSP Collides with the Eurasian margin in Taiwan
d. To the E, PSP is defined by the Bonin-Marianas-Yap
Trench system

A

A. To the North, PSP subducts under the Japanese Archipelago along Nankai and Ryukyu Trench

Answer

To the NW, PSP subducts under the Japanese Archipelago along Nankai and Ryukyu Trench

25
Q

Marginal basins with Eurasian Affinity

3

A

Sulu Sea Basin
South China Sea Basin
Celebes Sea Basin

26
Q

Volcanic arc of the presently active Marianas Trench

 This defines the W and E limits of Marianas Basin

A

East Mariana Ridge

27
Q

South China Basin

a. Depth
b. Opened at __ and __ Ma

Opening was preceded by rifting that could have taken place
between the Late Cretaceous and Late Eocene

A

a. 4km
b. 2 stages of opening
32 to 17 Ma along E-W axis
20 to 17 Ma along NE-SW axis

28
Q

Model used in Eurasian and Indo-Australian Collision that shows the shearing of China.

A

Plasticine Model

29
Q

Situated immediately to the southeast of Palawan, this small marginal basin compose two subbasins that are separated by an east-northeast trending the
Cagayan de Sulu Ridge.

 Formed starting ~ 20 Ma (early Miocene)

A

Sulu Sea Basin

30
Q

Ridge that separates the Sulu Sea Basin from the Celebes Sea Basin

A

Sulu-Zamboanga Ridge

31
Q

Sedimentary Basins with PMB affinity

9

A
  1. Ilocos- Central Luzon Basin
  2. Cagayan Valley Basin
  3. Southern Luzon- Bicol Basin
  4. Mindoro Basin
  5. Iloilo Basin
  6. Visayan Sea Basin
  7. Samar Basin
  8. Agusan- Davao Basin
  9. Cotabato Basin
32
Q

Active Volcanic Arcs

A
  1. Luzon Volcanic Arc
  2. East- Philippine Volcanic Arc
  3. Negros-Panay Arc
  4. Sulu- Zamboanga Arc
  5. Cotabato Arc
33
Q

Complete Ophiolite in the PH

A

Zambales, Isabela,

Palawan, Pujada

34
Q

Youngest Ophiolite in PH

A

Mindoro (Amnay)

35
Q

Pre- Cretaceous Metamorphic Rocks

of Continental Origin:

A 
Caramay Schist
Halcon Metamorphics
Romblon Metamorphics
Buruanga Metamorphics
Tungauan Schist
36
Q

SEDIMENTARY BASIN and FILL THICKNESS

  1. Ilocos- Central Luzon Basin
  2. Cagayan Valley Basin
  3. Southern Luzon- Bicol Basin
  4. Iloilo Basin
  5. Visayan Sea Basin
  6. Agusan- Davao Basin
  7. Cotabato Basin
A
  1. 8000m
  2. 8100m
  3. 4600m
  4. 5000m
  5. 4000m
  6. 12000m
  7. 8000m
37
Q

3 segments of PFZ

A

Northern Segment
NW Luzon to Lamon Bay

Central Segment
Bondoc Peninsula to Leyte

Southern Segment
Mindanao to Moluccas

38
Q

Also known as the Valley Fault System

A

Marikina Valley Fault

39
Q

Other active faults (11)

A
  1. Marikina Valley Fault
  2. Macolod Corridor
  3. Lubang-Verde Passage Fault System
  4. Mindoro/Aglubang Fault
  5. Sibuyan Sea Fault
  6. Legaspi Lineament
  7. Tablas Lineament
  8. Mindanao Fault
  9. Offshore Cebu and Bohol Fault
  10. North Bohol Fault
  11. Negros Thrust
40
Q

True or False

The Izu-bonin Ridge splits into two branches towards the west.

A

False

South

41
Q

What basin opened at

  1. 60 - 35 MY
  2. 30 MY
  3. 10 MY
  4. 6 MY
A
  1. WPB
  2. Parece Vela Basin
  3. Shikoku
  4. Mariana Basin

Correlation 2 (19 decks)

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