Question

which of stenos relative - age dating principles can be used to determine the relative ages among an igneous intrusion and several layers of sedimentary rocks?
○ superposition
○ lateral continuity
○ original horizontality
○ cross - cutting relationships

Explanation:

• Superposition: Applies to undisturbed sedimentary layers (younger on top), but not directly to igneous intrusions.
• Lateral Continuity: Deals with sedimentary layers extending laterally, not age - determination between igneous and sedimentary.
• Original Horizontality: States sedimentary layers are initially horizontal, not about age comparison with intrusions.
• Cross - cutting Relationships: When an igneous intrusion cuts through sedimentary layers, the intrusion is younger than the layers it cuts. This principle is used to determine relative ages between igneous intrusions and sedimentary rocks.

Answer:

cross - cutting relationships