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Geology of Yemen - Quiz
Geology of Yemen
  • 1. Which type of rocks form the ancient crystalline basement in Yemen?
A) Igneous and metamorphic rocks
B) Volcanic basalt only
C) Sedimentary sandstone only
D) Limestone and shale
  • 2. What process is described as having played a major role in eliminating many of Yemen's rock units?
A) Glaciation
B) Volcanism
C) Erosion
D) Subduction
  • 3. What characterizes the Precambrian basement formations found in the center, north, and northwest of Yemen?
A) Intense folding and regional metamorphism
B) Horizontal volcanic layering
C) Undeformed granite plains
D) Cenozoic sedimentary deposits
  • 4. What is the origin of the Wajid Sandstone?
A) Volcanic ash accumulation
B) Redeposited remains of the peneplain ground surface
C) Deep marine sedimentation
D) Glacial till deposits
  • 5. In which period did the Wajid Sandstone form?
A) Oligocene
B) Paleocene
C) Permian
D) Cretaceous
  • 6. During which era did the Kohlan Series shales form in large lakes?
A) Cenozoic
B) Paleozoic
C) Precambrian
D) Mesozoic
  • 7. What major geologic event occurred during the Malm?
A) Widespread glacial erosion
B) Major mountain building
C) Meteorite impact
D) Marine transgression
  • 8. Which series of calcareous rocks was deposited during the Malm transgression?
A) Medj-zir Series
B) Amran Series
C) Tawilah Group
D) Trap Series
  • 9. Where are the subsidence zones in Yemen located?
A) Northwest of Sana'a
B) Near the border with Oman
C) Ramlat as Sab'atayn desert area
D) In the Haraz Mountains
  • 10. What Cretaceous sandy conglomerate unit was protected from erosion by the Trap Series?
A) Amran Series
B) Kohlan Series
C) Tawilah Group
D) Medj-zir Series
  • 11. What is the approximate maximum thickness of the Trap Series lava flows and tuff?
A) 0.5 kilometres
B) 3.0 kilometres
C) 5.0 kilometres
D) 1.5 kilometres
  • 12. Which mountains contain the highest peak in the Arabian Peninsula?
A) Oman border range
B) Haraz Mountains
C) Hadhramaut Mountains
D) Sarat Mountains
  • 13. What is the name of the highest mountain in the Arabian Peninsula?
A) Jabal Sana'a
B) Jabal Ramlat
C) Jabal An-Nabi Shu'ayb
D) Jabal Hadhramaut
  • 14. Which geological feature is found near Sana'a, Dhamar, and Ma'rib from the last 2.5 million years?
A) Precambrian metamorphic schist
B) Basalt flow and craters
C) Paleozoic shales
D) Deep granite intrusions
  • 15. During which period did intense volcanism begin in Yemen?
A) Cretaceous
B) Cambrian
C) Paleocene
D) Jurassic
  • 16. What type of rock is common in the north as laccolith intrusions?
A) Igneous
B) Metamorphic
C) Loess
D) Sedimentary
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