Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 by Alexander von Humboldt
page 54 of 644 (08%)
page 54 of 644 (08%)
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mountains. These are not imbedded fragments, as at Greiffenstein in
Saxony, but aggregations of particles which seem to have been subjected to partial attractions. I could not follow the line of junction of the gneiss and granitic formations. According to angles taken in the valleys of Aragua, the gneiss appears to descend below the granite, which must consequently be of a more recent formation. The appearance of a stratified granite excited my attention the more, because, having had the direction of the mines of Fichtelberg in Franconia for several years, I was accustomed to see granites divided into ledges of three or four feet thick, but little inclined, and forming masses like towers, or old ruins, at the summit of the highest mountains.* (* At Ochsenkopf, at Rudolphstein, at Epprechtstein, at Luxburg, and at Schneeberg. The dip of the strata of these granites of Fichtelberg is generally only from 6 to 10 degrees, rarely (at Schneeberg) 18 degrees. According to the dips I observed in the neighbouring strata of gneiss and mica-slate, I should think that the granite of Fichtelberg is very ancient, and serves as a basis for other formations; but the strata of grunstein, and the disseminated tin-ore which it contains, may lead us to doubt its great antiquity, from the analogy of the granites of Saxony containing tin.) The heat became stifling as we approached the coast. A reddish vapour veiled the horizon. It was near sunset, and the breeze was not yet stirring. We rested in the lonely farms known under the names of the Hato de Cambury and the house of the Canarian (Casa del Isleno). The river of hot water, along the banks of which we passed, became deeper. A crocodile, more than nine feet long, lay dead on the strand. We wished to examine its teeth, and the inside of its mouth; but having been exposed to the sun for several weeks, it exhaled a smell so fetid that we were obliged to relinquish our design and remount our horses. |
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