Figure F4. Variable-density stack sections with approximately no vertical exaggeration across proposed and drilled site locations. A. Proposed Site APSHE-01A, drilled as Site 1102. The whole section lies within the foresets of Unit S1. B. Proposed Site APSHE-02A. Topsets of Unit S1 unconformably overlie foresets of Unit S2. C. Proposed Site APSHE-03A, drilled as Site 1100. Topsets of Unit S1 overlie foresets of Unit S2. D. Proposed Site APSHE-04A. Conformable succession of Unit S1 topsets, Unit S2 foresets, and subparallel reflectors of Unit S3. E. Proposed Site APSHE-10A, drilled as Site 1103. Topsets of Unit S1 overlie Unit S3 near-conformably. The S3/S4 boundary is unconformable. Unit S2 is missing at this location. SP = shotpoint. TWT = two-way traveltime.