Thayer Expedition: Scientific Results of a Journey in BrazilFields, Osgood & Company, 1870 - 620 sider |
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Abrolhos abundant appears Bahia banks Barra basin beach beds bordering Botocudos boulders Brazil Brazilian Burton Cachoeira campos Candiota Cantagallo catinga chapada clay coast color composed coral covered cretaceous decomposed decomposition deposits described distance Doce drift fazenda fish forest fossils Francisco Geological gneiss gneiss hills gold granite gravel height irregular island Jequitinhonha Lagoa lands leagues limestone Maceió Matheos metamorphic metamorphic rocks mica miles Minas Geraes Minas Novas Morro mountain mouth Mucury narrow navigable northward observed occur Parahyba Pardo Paulo pebbles Pernambuco Piranhas places plain Pompéo Porto Porto Seguro Professor Agassiz province quartz reef region ridge river rock rounded sand sandstone Santa Santo São Francisco São Paulo says seen Sergipe Serra do Mar shale shore side slopes soil southward species specimens Spix and Martius stream surface tertiary thick valley vegetation veins Velhas vicinity Villa wooded
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Side 476 - blocks among them. The medial moraine extends nearly through the centre of the village, while the left-hand lateral moraine lies outside of the village, at its eastern end, and is traversed by the road leading to Ceara. It is not impossible that eastward, a third tributary of the serra may have reached the main glacier of
Side 476 - Pacatuba. I may say that in the whole valley of Hasli there are no accumulations of morainic materials more characteristic than those I have found here, not even about the Kirchet; neither are there any remains of the kind more striking about the valleys of Mount Desert in Maine, where the glacial phenomena are so remarkable ; nor in the valleys of
Side 475 - or in those of the mountains of Cumberland in England. It had evidently a local glacier formed by the meeting of two arms, which descended from two depressions spreading right and left on the upper part of the serra and joining below in the main valley. A large part of the medial moraine formed by the meeting of these two arms can still
Side 408 - rivers; but if a few drops of blood be shed on the water they rise by thousands to the surface, so that if a person be only slightly bitten it is difficult for him to get out of
Side 346 - at an angle of fifty degrees. Hence all the observations hitherto made tend to show that the gneissic rocks over the whole of this part of the continent have their folia extending generally within almost a point of the compass of the same direction.
Side 475 - of the lateral moraines is perfectly preserved, the village road cutting through it; while the village itself is built just within the terminal moraine which is thrown up in a long ridge in front of it.
Side 14 - not so vertical as in the southern prolongation of the range. The consequence of this difference is the formation of more massive and less disconnected summits on the north side, while on the south side, where the strata are nearly or quite vertical, the harder
Side 543 - In some places the vein is cavernous and less close in its texture than in others; but where drusy cavities are frequent the yield of gold diminishes; the most productive matrix for gold is a compact mixture of quartz and pyrites, with
Side 345 - places, the gneiss included angular, well-defined, sometimes bent masses of hornblende rock, quite like, except in being more perfectly crystallized, that forming the dikes, and, at least in one instance, containing (as determined by Professor Miller) augite as well as hornblende.
Side 345 - generally strike irregularly, and are often curvilinear, dipping in all directions at various angles; but where best defined, they extended most frequently in a NE by N. (or East 50° N.) and SW by S. line, corresponding nearly with the