. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 28 bulletin: museum of compakative zoology. and the top of them, at a few places only, rises perhaps as much as a metre above high tide. Sand dunes lie on top of these beds, and behind the dunes the water soaks down, passes thi-ough the dunes, and following along the top of the rocks issues as amber-colored springs on the beach. At one place a large spring has cut through the rock and comes out two metres or more below its surface. Not a trace of a fossil could be. Fig. 6. Theoretic section showing the relati
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 28 bulletin: museum of compakative zoology. and the top of them, at a few places only, rises perhaps as much as a metre above high tide. Sand dunes lie on top of these beds, and behind the dunes the water soaks down, passes thi-ough the dunes, and following along the top of the rocks issues as amber-colored springs on the beach. At one place a large spring has cut through the rock and comes out two metres or more below its surface. Not a trace of a fossil could be. Fig. 6. Theoretic section showing the relations of the Bahia Formosa beds to the Cunhahu sandstone. found in a kilometre of exposure of this rock. The beds are horizontal, but they do not appear in the Bahia Formosa section of the colored beds which are cut clear down to the water's edge. The snuff-coloi-ed beds must, therefore, rest unconformably against the valley originally cut by the Cunhahu in these sediments. A few kilometres north of the Cunhahu and north of Kio Sibaiima, the bluffs have lying against them at one place horizontally bedded sedi- ments made of fragments derived from these bluffs themselves. These beds contain no fossils, and from the appearance of the materials it is supposed that the newer beds here were deposited since the discoloration of the bluffs. At this place the top of the deposit is barely within reach of the highest spring tides. I am not at all sure that these newer beds are related to the snuff-colored ones. At the mouth of Rio Maman- guape, S. lat. 6° 46', on the point of land just east of the Barra de Mamanguape are exposed very dark sandstones, of about the same texture as the reef rocks and containing quartz, but in color from dark brown to perfectly black. Between the I N V 'â ']'â â ' --â â \ A 'â -i ... J 1 ⢠⢠⢠'' 1 i:-n~> . â¢. â ⢠â â 1 â â .â .â , 1 .\ â â â ]â â â - â â ' > :;;!;â ,; â 1 . , ^ .-â :V- -^ ^1 1 . ;i'- 'â â â
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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
