Plate Margins

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M Y G R J W L L M V D Q S F G E G E X X J
C O N S T R U C T I V E H Y Y W T C Y I H
F V W J H X U A K V O L C A N O E S D P N
S U P E R C O N T I N E N T P A N G E A E
I P W E L F S T B I M B I V O X D D A K G
U F E L I A E C F W W Y W L T X D N V O H
H O N W T S M Y C F J S L L L K E D P Q W
F L P U H T U T K A A M B H I P B A S Q N
X D N H O H L F K E I X D Y R V C D E X K
S M F T S E P J J N S D H O D D I L C M K
M O U G P N E P D X E Q T X M S E X K Y P
A U E K H O L C O N S E R V A T I V E J B
Q N M R E S T B X O K Y U O O G A D Q Y T
D T N D R P N M P D K O P R V Q H H R V Y
V A R U E H A M L Q B H Q K W F B U R N W
W I R J K E M G O X W F F B X V M E V H K
L N X G K R X O C E A N I C R I D G E S O
Q S D C A E S U O W W K R Y W K F V P E L
N K L A Q D F B D T B R T J F D M K X L S
B O I T H S V O S H A L H Y Y M B W H M J
C U K P B G V K N U S F O A B B V J V S B

Clues

  • An Oceanic Ridge forms along which type of margin (12)
  • Consists of the crust and the rigid upper section of the mantle (11)
  • Have a total length of 60,000km (7, 6)
  • Originates deep within the asthenosphere as molten rock which rises and melts through the lithosperic plate forming a large volcanic mass at a hot spot (6, 6)
  • Semi-molten mass below the lithosphere on which the plates float (13)
  • The San Andreas Fault is an exaple of which margin (12)
  • Theory by Alfred Wegener in 1912 that all the continents used to be joined together 250m years ago (14, 6)
  • What is formed when two continental plates collide (4, 9)
  • Which landforms occur at Subduction zones (9)

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