. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. 630 ISLAND OF PALMA. Fig. 697. [Oh. View of the Isle of Palma, and of the entrance into the central cavity or Caldera. From Von Buch's " Canary ; The annexed section (fig. 698) passes through the island from Santa Cruz de Palina to Briera Point, or from southeast to northwest (see map, p. 628). It has been drawn up on a true scale of heights and horizontal distances from the observations of Mr. Hartung and my own. Fiar. 698. Section of the Is
. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. 630 ISLAND OF PALMA. Fig. 697. [Oh. View of the Isle of Palma, and of the entrance into the central cavity or Caldera. From Von Buch's " Canary ; The annexed section (fig. 698) passes through the island from Santa Cruz de Palina to Briera Point, or from southeast to northwest (see map, p. 628). It has been drawn up on a true scale of heights and horizontal distances from the observations of Mr. Hartung and my own. Fiar. 698. Section of the Island of Palma, from Point Briera, on the northwest, to Santa Cruz de Palma, on the southeast. See map, fig. 695, p. 628. «, 5. The Caldera (height of a, 6000 feet). c. Commencement of steeper dip. d. Santa Cruz de Palma or Tedote. e. Lateral cone, 3940 feet above the sea (Vidal's Map). /. Briera Point. cj. One of several outliers of the upper formation in centre of Caldera. S. P. Half-buried cone and crater of San Pedro. The lavas are seen to be slightly inclined near the sea at Santa Cruz, where we observed them flowing round the cone of San Pedro, which they have more than half buried without entering the crater. On starting from the same part of the seacoast, and ascending the deep Barranco de la Madera, we saw just below c the basaltic lavas dipping at an angle of 5 degrees, there being no dikes in that region. Farther up, where the dikes wTere still scarce, the dip of the beds increases to 10 and 15 degrees, and they become still steeper as they approach the Caldera at b, where dikes abound. The section (fig. 699) is at right angles to the preceding, and cuts through the cone in the direction of the great Barranco, or from north- east to southwest. The lowest of the two slanting lines, m, i, descending from the Caldera to the sea along the bottom of the Barranco, represents the present bed of the torrent; the upper line, k, I, the height at which beds of gravel, elevated
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectgeology, bookyear1868
