FIGURE 7.-Block diagram of the alluvial fan of Antelope Creek, at the base of the Del Norte Mountains, northwest of Altuda. (See pl. 23.) The building of the alluvial fan has ponded the drainage coming from the back side of the block, producing a patch of swampy land north of Strobel.

Figure txu-oclc-6445288-b-017-f-07
FIGURE 7.-Block diagram of the alluvial fan of Antelope Creek, at the base of the Del Norte Mountains, northwest of Altuda. (See pl. 23.) The building of the alluvial fan has ponded the drainage coming from the back side of the block, producing a patch of swampy land north of Strobel.

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Professional Paper 187 GEOLOGY OF THE MARATHON REGION, TEXAS
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