. Bulletins of American paleontology. 136 Bulletin 277 Real de Catorce ? Lo Leona ^ Abandoned M me Mule Track 17—23Fossil Logs. ^^:p^ Taraises Fm. 1,1,1 i t La Cajo Fm. Zuloaga Ls Fold Axis 11. - Fault 0 1 2 km (approx). Text-fig. 6. — Sketch map of the area between Real de Catorce and Los Alamitos showing the outcrops of the La Caja Formation, fossil localities, and the inferred structure. the most southerly locality studied in the Sierra Catorce (Text-fig. 7). Just west of El Pastor lies the village of Tierra Negras, noted for its working mercury mine. The creek section through El Pastor is
. Bulletins of American paleontology. 136 Bulletin 277 Real de Catorce ? Lo Leona ^ Abandoned M me Mule Track 17—23Fossil Logs. ^^:p^ Taraises Fm. 1,1,1 i t La Cajo Fm. Zuloaga Ls Fold Axis 11. - Fault 0 1 2 km (approx). Text-fig. 6. — Sketch map of the area between Real de Catorce and Los Alamitos showing the outcrops of the La Caja Formation, fossil localities, and the inferred structure. the most southerly locality studied in the Sierra Catorce (Text-fig. 7). Just west of El Pastor lies the village of Tierra Negras, noted for its working mercury mine. The creek section through El Pastor is structurally complicated by two faults and a tight synclinal fold (Text-fig. 7). One major fault runs N-S along the creek and has almost cut off the exposures of La Caja Formation on the eastern bank; the other fault is a strike-slip zone about 10 m broad, approximately 35 m above the base of the La Caja resulting in the loss of a large part of the El Verde. These beds dip 25°-30° N-NW. Above the fault zone, the synclinal fold has resulted in the repetition of some nf the El Verde Member. The dips in the faulted and folded part of the section are as high as 70°, sometimes 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 Paleontological Research Institution (Ithaca, N. Y. ); Columbia University. Ithaca, N. Y. , Paleontological Research Institution [etc. ]
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