. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. 214 Annals of the Carnegie Museum. schist, and pegmatite, are shown in the sketch map (text-figure 2). Much of the siliceous material seems to be in the form of veins and lenses of quartz, but the wider areas may be of quartzite. In the main the limestone outcrops as a series of craggy masses (Cf. Plate X, fig. i), along a zone about one-half kilometer wide, which extends in a nearly straight line S. 60° W., magnetic, for a distance of five kilometers. The northeasternmost outcrop observed is
. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. 214 Annals of the Carnegie Museum. schist, and pegmatite, are shown in the sketch map (text-figure 2). Much of the siliceous material seems to be in the form of veins and lenses of quartz, but the wider areas may be of quartzite. In the main the limestone outcrops as a series of craggy masses (Cf. Plate X, fig. i), along a zone about one-half kilometer wide, which extends in a nearly straight line S. 60° W., magnetic, for a distance of five kilometers. The northeasternmost outcrop observed is on a steep hillside of white quartz (or quartzite), and the southwestern exposure culminates in a prominent pillar called 'Frade' = The Monk (Cf. Plate X, fig. 2), which is at the northwestern base of the steep quartz or quartzite slopes. In the area lying north of the main zone small outcrops of limestone were seen beside the railroad near Itapahy station, a few kilometers northwest of the Trade,' and at the margin of a pond between the northeastern end of the zone and i\carape. The limestone masses seem to be bordered on each side by quartz. Quartz (or quartzite) slopes rise directly south and east of the pillar 'Frade,' and a boulder near the pillar exhibits a contact zone about one meter wide, of alternating bands of quartz and liinestone, as shown in Text-fig. 3«. In the railway cut one-half kilometer south-. 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
