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Science Bowl Question

📅 NSB Round Robin 2020🎓 MS🔄 Round 9#️⃣ Question 19❓ TOSS-UP📝 Multiple Choice

Which of the following best defines a geologic unconformity?

W) A time gap in the rock record
X) A contact between an igneous and a sedimentary rock
Y) The zone of deformation around an active fault
Z) A rock layer of unknown origin
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