Crossword: September 2021

123456789101112
Across
  1. 2. The upper mantle of the earth is composed largely of this.
  2. 3. Transform fault is a ____________ fault.
  3. 6. Permian is a:
  4. 9. This mineral belongs to the cubic system.
  5. 10. It is Lower Gondwana flora.
  6. 12. Isotacy involves ________ in continental belts.
Down
  1. 1. This is a plutonic rock consisting only of plagioclase, pyroxene and hornblende as major minerals.
  2. 4. Fossils of burrows and footprints are known as _____ fossils.
  3. 5. In this mass extinction period trilobites went extinct.
  4. 6. varves are typical products of ___________ lakes.
  5. 7. This is the sandstone that contains less than 15% matrix.
  6. 8. This rock typically occurs in a ductile shear zone.
  7. 11. The presence of a pallial sinus in a bivalve shell indicates its ________ habit.