. Acta Academiae Aboensis. Science; Mathematics. DETRITIC FORMATIONS 73 pearance as that farther to the southwest. Regarding the tectonics may be mentioned, that the yellowish sandstone upward changes its dip forming a flat-lying cover over the crystalline bulk. It is the only part of the area, where the Gondwana have been observed in an almost horisontal position resting upon the basement's upland surface. Northward off this locality the Gondwana layers rapidly dissappear due to Fig. 8. A cut through the sediment mantle along the southeastern slope of the Cerro Villa Union in the Que
. Acta Academiae Aboensis. Science; Mathematics. DETRITIC FORMATIONS 73 pearance as that farther to the southwest. Regarding the tectonics may be mentioned, that the yellowish sandstone upward changes its dip forming a flat-lying cover over the crystalline bulk. It is the only part of the area, where the Gondwana have been observed in an almost horisontal position resting upon the basement's upland surface. Northward off this locality the Gondwana layers rapidly dissappear due to Fig. 8. A cut through the sediment mantle along the southeastern slope of the Cerro Villa Union in the Quebrada de los Lagares. Lower Gondwana sandstone and slate in regular alternation lying over the crystalline basement (mica schist). Looking south with the Cerro Bola in the distance. The region of the Cerro Panta Colorada — Las Ramaditas. A continuation of the southeastern flanc-cover to the northeast forms in some degree the group of foothills, situated between the steep eastern side of the Cerro Villa Union and the valley of Vin- china. Here the cover, however, has been broken into many small blocks and the outcrops of the strata show therefore a greater variety. Also the dips are more variable. This foothill-group consists of two essential parts, an exterior one, facing the eastern lowland, the Cerro Punta Colorada and its ramifications consisting of sandstones, and an interior one, Las Ramaditas, composed of. 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 Åbo akademi (1918- ). Åbo : Åbo akademi
Size: 1972px × 1267px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectm, booksubjectscience
