Rock bodies and geologic events (such as faulting, igneous intrusions, erosion) in this cross-section are labeled A through J. One of these rock bodies (I) is an intrusion. Intrusions occur when molten rock called magma penetrates into layers from below. The magma is always younger than the layers that it penetrates. Likewise, a fault is always younger than the layers that have faulted. A fault is a crack or break that occurs across rock layers, and the term faulting is used to describe the occurrence of a fault. The broken layers may move so that one side of the fault is higher than the other. Faulted layers may also tilt.

To determine the relative ages of the rock layers from youngest to oldest, we follow the general principles of geology which include the principles of superposition (younger layers are deposited on top of older layers), the relationship of intrusions, and faulting.

1. I (Intrusion) - The intrusion of magma is always younger than the layers it penetrates.
2. (Layer with Fault - if applicable) - If there is a fault present that disrupts any layers, then the fault itself is younger than the layers that it impacts.
3. Any layers affected by faulting - These would be younger than any layers that have not been impacted by the fault.
4. Any other layered rocks in the order they were deposited - They would be listed from the youngest to the oldest based on their deposition without being influenced by the intrusion or fault.

As the specific labels for the rock layers are not supplied in your question, use the order of the intrusions and faults as indicated by the principles mentioned to organize and list them accordingly.

So, in summary (with placeholders for your specific labels):

1. I (Intrusion)
2. (Layer affected by Fault, if applicable)
3. Remaining layers arranged from younger to older based on their deposition and the principle of superposition.

Please provide detailed layer labels if you wish for precise ordering!