. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. FiG. 3. a. Section showing alternation of quartz and limestone in a boulder at 'Frade' near Acarape, Ceara. b. Section showing alternation of quartz and limestone in railway cut, one-half kilometer S. E. of Itapahy Station near Acarape, Ceara. east of Itapahy bands of limestone and quartz are exposed as shown in Text-fig. 36. The limestone is not exposed on the opposite (western) side of the railroad cut, which is of gneiss, with a smooth surface like that of a movement plane. The pegmatite d
. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. FiG. 3. a. Section showing alternation of quartz and limestone in a boulder at 'Frade' near Acarape, Ceara. b. Section showing alternation of quartz and limestone in railway cut, one-half kilometer S. E. of Itapahy Station near Acarape, Ceara. east of Itapahy bands of limestone and quartz are exposed as shown in Text-fig. 36. The limestone is not exposed on the opposite (western) side of the railroad cut, which is of gneiss, with a smooth surface like that of a movement plane. The pegmatite dikes in the northeastern portion of the quartz and limestone area seem to strike in the same direction as the limestone; but in the area of schist between "Frade" and Itapahy a small pegmatite dike trends southward until it meets the quartz and then 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 Carnegie Museum; Carnegie Museum of Natural History. [Pittsburgh] : Published by authority of the Board of Trustees of the Carnegie Institute
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectnatural, bookyear1922
