Plate Margins

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

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)
  • 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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