. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. woodworth: geological expedition to brazil and chile. 93 consequence of erosion. In the section which can be constructed from the exposures along the road from Rio Negro to Lages at the pass through Collectoria it is possible that a fault can be traced cutting off the Espigao from the main mass of trap on the south at the right of the section in Fig. 24. But this interpretation of the. Fig. 24.— Section across the Serra do Espigao at the Collectoria on the road from Rio Negro to Lages. tilted beds at the bott
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. woodworth: geological expedition to brazil and chile. 93 consequence of erosion. In the section which can be constructed from the exposures along the road from Rio Negro to Lages at the pass through Collectoria it is possible that a fault can be traced cutting off the Espigao from the main mass of trap on the south at the right of the section in Fig. 24. But this interpretation of the. Fig. 24.— Section across the Serra do Espigao at the Collectoria on the road from Rio Negro to Lages. tilted beds at the bottom of the valley and the apparently lower level at which the trap lies south of the stream crossing demands a throw of the normal fault on the south side in a manner nowise supporting the hypothesis that the escarpment is due to a fault. This northerly steep dip has by some been regarded as cross-bedding and is stated to occur elsewhere along the trap escarpment in the underlying sandstones. Niiinher of the trap sheets.— It is stated that there are four trap sheets or sets of sheets in the trap mass of the Serra Esperan9a on the CO«rr<BA;^0S. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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