ES_Plate Tectonics (Philippine Tectonics)

Page 1

  • Title: Earth Science Plate Tectonics

  • Author: Glaiza R. Reobilo

  • Covers the fundamental concepts of Earth Science, focusing on plate tectonics.

Page 2

  • Philippine Geology

    • Plates

      • Philippine Sea Plate (PSP)

      • Sundaland Plate (SP)

      • Philippine Mobile Belt (PMB)

      • PMB is an actively deforming, narrow sliver of the lithosphere.

Page 3

  • Lithosphere Composition

    • Philippine Sea Plate (PSP)

      • Oceanic lithosphere.

    • Sundaland Plate (SP)

      • Contains a core made of continental lithosphere and continental arcs but mostly oceanic lithosphere at the part interacting with PMB.

Page 4

  • Geological Coordinates

    • Coordinates indicate tectonic plates and geological features in Southeast Asia.

    • GPS Movement: 5 cm/year in Southeast Asia.

    • Various faults and trenches are indicated on the map, such as:

      • EHS: Eastern Himalayan Syntaxis

      • NT: Negros Trench

      • CT: Cotabato Trench

      • PF: Palu-Koro Fault

      • MS: Macassa Strait Plate

Page 5

  • Philippine Geology Map

    • Legend: Active volcanoes and bathymetry ranges classified by depth.

    • Key features:

      • PMB: Mixture of oceanic lithosphere and island arcs.

Page 6

  • Subduction Zones

    • PSP moves northwestward, while SP moves southeastward.

    • Convergence occurs along subduction zones around the PMB.

Page 7

  • Detailing Subduction Zones

    • Philippine Trench (PT)

    • East Luzon Trough (ELT)

    • Manila Trench (MT)

    • Negros Trench (NT)

    • Sulu Trench (ST)

    • Cotabato Trench (CT)

Page 8

  • Collision Zone

    • Palawan-Mindoro Continental Block (PCB)

      • Continental lithosphere sourced from mainland Asia, known for its buoyancy.

    • Palawan-Mindoro Collision Zone (PCZ) located between MT and NT.

Page 9

  • Strike-slip Faulting

    • Philippine Fault Zone (PFZ)

      • Left-lateral strike-slip fault due to oblique convergence of PSP with PMB.

Page 10

  • Complex Shear Partitioning

    • Abbreviations:

      • PT: Philippine Trench

      • SP: Sunda Plate

      • NT: Negros Trench

      • NOF: Negros Oriental Fault

      • NBF: North Bohol Fault

      • EBF: East Bohol Fault

      • PFZ: Philippine Fault Zone

  • This section discusses the interaction of different fault zones and tectonic plates in central Philippines.

Page 11

  • Philippine Fault Zone

    • Diagram: Illustrating the relationship between the Philippine Fault, Philippine Sea Plate, and Philippine Mobile Belt in context with the mantle.

Page 12

  • Earthquakes

    • Observation: The depths of subduction-related earthquakes correlate with the depth of subducted slabs.

Page 13 to Page 16

  • Maps and Bathymetry

    • Continuation of bathymetric maps showing geological features across specific coordinates.

    • Legends: Indicating active volcanoes and various depth classifications.

    • Covers the ranges of bathymetry and characteristic features of PMB, PSP, and SP.

Page 17 to Page 19

  • Detailed Geological Maps Continued

    • Further exploration of bathymetry and geological features across the region, highlighting active volcanoes and various tectonic regions.

Page 20 to Page 24

  • Evaluation Questions

    • Multiple Choice & True/False Questions: Covers concepts of oblique convergence, buoyancy differences, and the length of tectonic features.

    • Involves critical thinking based on geological knowledge.

Page 25 to Page 28

  • Assessment Questions

    • Further tests relating to the geological understanding of the Philippine region and its features encompassing various tectonic plates.