Q. Petroleum deposits are detected by the (A) Oil seepage at the surface of the earth (B) Measuremet of density, elasticity and magnetic & electric properties of the rock in the crust of the earth (C) Age & nature of rocks inside the crust of the earth (D) All of the above 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (D) All of the above