Figure 3. Cross-section from south to north showing depositional packages and their 3rd-order sequences. Stratigraphic interpretation developed from an integrated evaluation of the Ordovician Montoya shown in stages: Sequence I B Upham, Sequence II B early Aleman, Sequence III B later Aleman, and Sequence IV B Cutter. Triangles on the left indicate 2nd -order sequence water depth change (see Figure 2). 

Click to view sequence of the cross-sections.