. Acta Academiae Aboensis. Science; Mathematics. 90 SIERRA DE UMANGO 4. Sierra de Sanogasta (Cuesta de Miranda). 5. Sierra de Velazco (Saladillo). 6. Sierra del Vilgo (Amanao). 7. Sierra de los Llanos. (Nacate, Malanzan, etc.). According to the plant remains from several of these occurrences (Kurtz and Bodenbender) they belong to the Karharbari hori- zon of India or to the Ecca series of South Africa. The specimens belong to a typical Glossopteris flora (lower permian). Under the coal bearing sandstones lies, as said, in many parts a boulder bed of basal character, noted already by Bodenbender
. Acta Academiae Aboensis. Science; Mathematics. 90 SIERRA DE UMANGO 4. Sierra de Sanogasta (Cuesta de Miranda). 5. Sierra de Velazco (Saladillo). 6. Sierra del Vilgo (Amanao). 7. Sierra de los Llanos. (Nacate, Malanzan, etc.). According to the plant remains from several of these occurrences (Kurtz and Bodenbender) they belong to the Karharbari hori- zon of India or to the Ecca series of South Africa. The specimens belong to a typical Glossopteris flora (lower permian). Under the coal bearing sandstones lies, as said, in many parts a boulder bed of basal character, noted already by Bodenbender (1896) in the. Fig. 14. The tillite occurrence at the Agua Blanquita. Small circles signs: tillite. To the right in the background sandstones of the lower Gondwana. The white part to the left is the crystalline basement. Looking east. Sierra de los Llanos, and since encountered in most of the above enumerated localities. The conglomerates are not yet more closely studied, therefore but little is known about their lithological charac- ter. Keidel is, however, of the opinion, that they are all of a glacial origin as the conglomerate of permian age more closely examined by him in the profile of Jachal in the Precordillera of San Juan (Keidel 1914). Probably they all correspond to the lower permian glaciation and are of the same age as the Talchir in India and the Dwyka conglomerate in South Africa. As found above the conglomerate and the graywacke outcropping in the pro- file of the Cerro Guandacol show a glacial (tillite) character too. Similar rocks also do occur in the Famatina 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
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