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Chapter 10, Section 3. Chapter 10, Section 2. Create a flashcard for each of the following terms (found on p.255 in your text book). Rifting Terrane Supercontinent cycle Pangaea Panthalassa If you finish early, study your flashcards!. Key Terms.

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key terms

Create a flashcard for each of the following terms (found on p.255 in your text book).

  • Rifting
  • Terrane
  • Supercontinent cycle
  • Pangaea
  • Panthalassa

If you finish early, study your flashcards!

Key Terms
rifting

The process by which Earth’s crust breaks apart.

  • New, smaller continents may form as a result.
Rifting
terranes

A TERRANE is a piece of lithosphere that has a unique geological history.

    • Contains rocks and fossils that differ from nearby terranes.
    • Major faults at the boundary of a terrane.
    • Magnetic properties of a terrane do no match nearby terranes.
Terranes
terranes1

When a Terrane on a subducting plate converges with a plate of continental crust the terrane is scraped off the subducting plate and is added to the continental plate.

  • Some terranes form mountains, some just add more surface area.
  • This process is called ACCRETION.
Terranes
the supercontinent cycle

SUPERCONTINENT= when all of the landmasses form one large continent (scientists believe there have been at least 5 different supercontinents since the first crust formed on Earth).

  • SUPERCONTINENT CYCLE = the process by which supercontinents form and break apart over time.
  • PANGAEA= the supercontinent that formed 300 million years ago and began breaking up 250 million years ago which led to our modern continents.
  • PANTHALASSA= the single, large ocean that covered the Earth’s surface during the time of PANGAEA.
The Supercontinent Cycle
quick check

What is a supercontinent? ________________________________________________________________________

  • ___________ was the most recent supercontinent.
Quick Check!!
geography of the future

As tectonic plates continue to move Earth’s geography will change dramatically.

  • East Africa will rift and separate from Africa, North and South America will collide with Africa, Los Angeles will be North of San Francisco!
Geography of the Future