The steep grade mellows as you curve around the base of the Tapeats Sandstone into the main river corridor ... around 9 miles with switchbacks leading down slopes of Hakatai Shale to the creek bottom.

The trail crosses Garden Creek, swings over to the west canyon wall, and contours along the shale slopes for three-quarters of a ... Salt Creek drainage and descends through the ledgy Tapeats ...

Grades up to 83.6 g/t Au and 312 g/t Ag in Quartz Veining ADELAIDE, AU /ACCESS Newswire / January 29, 2025 / HIGHLIGHTS New 'Tolmer' gold system recently confirmed by shallow high-grade gold ...

Based on well-seismic calibration techniques that use standard horizon flattening and synthetic seismograms to enhance the accuracy of geological horizon interpretation (Ehsan and Abdolrahim, 2018), ...

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Colors rage amid drifting cloud shadows and slanted sunlight. Cliffs of sandstone, limestone, shale and schist are streaked red and purple, orange and yellow. These are broken mountains, propping up ...