- D 7 Which Of These Continents Are Missing From This Reconstruction A Greenland C Australia D Africa B North Americ 1 (68.43 KiB) Viewed 258 times
NORTH AMERICAN PLATE Thingvellir Reykjavik Atlan Mid-Atlantic Ridge 3 EURASIAN PLATE Krafla ICELAND ATLANTIC OCEAN 8. What can we say about this illustration? Think about it! a. The island of Iceland could not have been c. Iceland is only the age of the breakup of isolated from Pangaea because it is too small. Pangaea because it forms on the Mid- Atlantic Ridge that only formed as the supercontinent broke up. b. Iceland is a fragment of Greenland and is d. Iceland's volcanoes are present because of essentially a micro-continent subduction, since all volcanoes mark convergent plate boundaries. magnetic stripes 10 5 0 5 10 million years ↑ ridge axis Pattern created by magnetic stripes along the Mid-Atlantic Ridge south of Iceland. 9. This shows stripe of magnetic bands on the Atlantic Ocean floor south of Iceland, the central part of Iceland lies on band a. 10 west c. 5 east b. 0 d. 10 east
16. 17. Mid-Ocean Ridge- Surface of Sea Floor Reversed; Partial Melting in 180 depth 200 k deptb What is normal and what is reversed? a. heat flow b. partial melting SUBDUCTION ZOME Tranch Are Valcances Continental Utosphere Asthenosphere What should this illustration be called?" a. Island Volcanic Arc and Spreading Center c. b. Continental Volcanic Arc and Spreading d. Center Oceanic Crust Normal Surface of Ocean Rising Column Ccasnic Lithosphere C. ocean floor magnetism d. the way the convection is working 21 Passive Margin Lithosphere Arrows Mean Movement Again SPREADING CENTER