1 / 54

WHAT IS CRUSTAL EXTENSION AND WHICH GLOBAL LANDSCAPE FEATURES DOES IT GIVE RISE TO?

WHAT IS CRUSTAL EXTENSION AND WHICH GLOBAL LANDSCAPE FEATURES DOES IT GIVE RISE TO?. CRUSTAL EXTENSION. Crust. Astheno - sphere. Upper Mantle. CRUSTAL EXTENSION. CRUSTAL EXTENSION. Crustal Thinning. CRUSTAL EXTENSION. Crustal Thinning. CRUSTAL EXTENSION. Crustal Thinning. Crustal

mateo
Télécharger la présentation

WHAT IS CRUSTAL EXTENSION AND WHICH GLOBAL LANDSCAPE FEATURES DOES IT GIVE RISE TO?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. WHAT IS CRUSTAL EXTENSION AND WHICH GLOBAL LANDSCAPE FEATURES DOES IT GIVE RISE TO?

  2. CRUSTAL EXTENSION Crust Astheno- sphere Upper Mantle

  3. CRUSTAL EXTENSION

  4. CRUSTAL EXTENSION Crustal Thinning

  5. CRUSTAL EXTENSION Crustal Thinning

  6. CRUSTAL EXTENSION Crustal Thinning Crustal Faulting

  7. DIVERGENCE. 1 Old Crustal Block

  8. DIVERGENCE. 2 Block 1 Block 2 Crustal Thinning & Faulting Large reservoir of liquid magma close to surface of crust

  9. DIVERGENCE. 2 Block 1 Block 2 Active Volcanoes Long Deep Lakes

  10. DIVERGENCE. 3 Crustal blocks moving further apart Block 2 Block 1

  11. DIVERGENCE. 3 Crustal blocks moving further apart Block 2 Block 1 Older volcanic rocks cooled, solidifies, contracts and adheres to blocks.

  12. DIVERGENCE. 3 Crustal blocks moving further apart Block 2 Block 1 Older volcanic rocks cooled, solidifies, contracts and adheres to blocks. Active volcanicity still connected to reservoir in upper mantle

  13. DIVERGENCE. 3 Crustal blocks moving further apart Sea invades long narrow inlet. Block 2 Block 1 Older volcanic rocks cooled, solidifies, contracts and adheres to blocks. Active volcanicity still connected to reservoir in upper mantle.

  14. DIVERGENCE. 4 Crustal blocks moving further apart Block 2 Block 1

  15. DIVERGENCE. 4 Crustal blocks moving further apart Block 2 Block 1 Oldest volcanic rocks near edge of block.

  16. DIVERGENCE. 4 Crustal blocks moving further apart Block 2 Block 1 Oldest volcanic rocks near edge of block. Younger volcanic further from block.

  17. DIVERGENCE. 4 Crustal blocks moving further apart Block 2 Block 1 Oldest volcanic rocks near edge of block. Active volcanicity still connected to reservoir in upper mantle Younger volcanic further from block.

  18. DIVERGENCE. 4 Sea broadening, shallow water, volcanic islands in middle Crustal blocks moving further apart Block 2 Block 1 Oldest volcanic rocks near edge of block. Active volcanicity still connected to reservoir in upper mantle Younger volcanic further from block.

  19. DIVERGENCE. 5 Crustal blocks moving further apart Block 2 Block 1

  20. DIVERGENCE. 5 Crustal blocks moving further apart Block 2 Block 1 Oldest volcanic rocks near edge of block.

  21. DIVERGENCE. 5 Crustal blocks moving further apart Block 2 Block 1 Oldest volcanic rocks near edge of block. Old volcanic further from block.

  22. DIVERGENCE. 5 Crustal blocks moving further apart Block 2 Block 1 Oldest volcanic rocks near edge of block. Old volcanic further from block. Young volcanic near mid-ocean.

  23. DIVERGENCE. 5 Crustal blocks moving further apart Block 2 Block 1 Oldest volcanic rocks near edge of block. Active volcanicity in mid-ocean. Old volcanic further from block. Young volcanic near mid-ocean.

  24. DIVERGENCE. 5 Large ocean basin underlain by volcanic rocks symmetrically distributed Crustal blocks moving further apart Block 2 Block 1 Oldest volcanic rocks near edge of block. Active volcanicity in mid-ocean. Old volcanic further from block. Young volcanic near mid-ocean.

  25. Goma, Democratic Republic of Congo Rwanada Block 1 Block 2 EAST AFRICAN RIFT VALLEY

  26. 4 5 HIGHEST PEAKS IN AFRICA 2 3 1 5 EAST AFRICAN RIFT VALLEY

  27. 4 2nd and 3rd DEEPEST LAKES IN THE WORLD 2 3 1 5 EAST AFRICAN RIFT VALLEY

  28. GLOBAL DISTRIBUTION OF EARTHQUAKES

  29. GLOBAL DISTRIBUTION OF VOLCANOES 03.02.b1

  30. Saudi Arabia, Egypt, Sudan and Eritrea, fit together like pieces of a jig-saw puzzle across either side of the Red Sea. Block 2 Block 1

  31. 03.00.a1f

  32. 10.08.a4

  33. Extinct volcano! USS Cole 17 Died 39 Injured Aden, 2000 Block 2 Block 1 Former Yemeni President, Ali Abdullah Saleh Volcanic lavas have filled the rift on the African side (Afar Triangle), creating strategic choke-point between Somalia and Yemen!

  34. Suez Canal links Mediterranean and Indian Ocean via the Red Sea. Aden: British controlled 1839-1967. Block 2 Block 1 Grandfather, Fred Mundy D.C.M. Suez – Jerusalem 1917-18

  35. GLOBAL DISTRIBUTION OF EARTHQUAKES

  36. GLOBAL DISTRIBUTION OF VOLCANOES 03.02.b1

  37. THE WEST BANK SETTLEMENTS Pre-1967 Arab-Israeli War border of Israel Jerusalem

  38. GOLAN HEIGHTS (EAST BANK!)

  39. ATLANTIC OCEAN

  40. ATLANTIC OCEAN ICELAND

  41. ATLANTIC OCEAN Ronald Reagan Margaret Thatcher

  42. OIL AND NATURAL GAS NORTH SEA EUROPE BRITAIN FALKLANDS MALVINAS SOUTH ATLANTIC ARGENTINA 10.10.b1

  43. ATLANTIC OCEAN ELBA ST. HELENA

  44. GLOBAL DISTRIBUTION OF EARTHQUAKES

  45. GLOBAL DISTRIBUTION OF VOLCANOES 03.02.b1 NB. THESEMUST APPEAR ABOVE SEA LEVEL TO BE PLOTTED!

  46. ATLANTIC OCEAN 10.04.a3

  47. INDIAN OCEAN 10.04.a3

  48. PACIFIC OCEAN 10.04.a3

  49. SOUTHERN OCEAN 10.04.a3

More Related