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The La Cocha-Río Téllez Migmatitic Complex is located on the eastern flank of the Colombian Andes, between the departments of Nariño and Putumayo. It crops out as windows between recent volcanic and fluvio-volcanic deposits. Under the name of La Cocha-Río Téllez Migmatitic Complex, granitoids, quartz-feldspar-moscovite and biotite gneisses, tonalites, mylonitic metatonalites and migmatitic amphibolites of different age and geological environment were grouped. According to our results, in this contribution we propose to stop using the name La Cocha-Río Téllez Migmatitic Complex and henceforth use the formal names of five units that represent different metamorphic and igneous events, formed between the Devonian (?) and Oligocene, which we propose to call as follows: the Sibundoy Gneiss to the unit with metamorphism ages between 365.97 ± 12.8 Ma and 386.78 ± 15.9 Ma, the San Francisco Schists with ages around 163 Ma, the Motilón Granodiorite to the pluton with crystallization ages between 172. 7±1.4 and 152.2 ± 0.31 Ma, the Alisales Tonalite to the pluton with crystallization ages of 32.4 ± 0.58 Ma, and the Tellez River Amphibolites to the unit with metamorphism ages of 80.4 ± 1.5 Ma. [ABSTRACT FROM AUTHOR]

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Copyright of Boletin de Geologia is the property of Universidad Industrial de Santander and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A compilation of the studies carried out in the Center of Natural Products of the National Center for Scientific Research about the obtaining of crude oil from 11 species of palms (Arecaceae) that grow in Cuba (Veitchia merrillii, Caryota urens, Wodyetia bifurcata, Serenoa repens, Thrinax radiata, Roystonea regia, Colpothrinax wrightii, Sabal maritima, Sabal palmetto, Ptychosperma elegans and Livistona chinensis) is presented. The yields of oil extraction from the ripe whole-fruits, dried and milled, were between 0.6% and 25.5%. Such oils were semisolids or oleaginous liquids of different tonalities of brown, with characteristic odors, lightly aromatic. These oils showed free fatty acids contents between 1.2 and 70.2 %, and total fatty acids contents between 58.4 and 89.7 %, with palmitic (9.2 - 52.2 %) and oleic (9.6 - 42.7 %) as the main acids. In all the oils lauric (0.6 - 44.3 %), myristic (0.5 - 22.4%), stearic (1.7 - 6.1%), linoleic (3.5 - 28.5 %) and linolenic (0.1 - 3.4%) acids were also present; while palmitoleic (0.1-3.7 %), caproic (0-2.2 %), caprilic (0.1-2.8 %), capric (0.1-2.5 %), pentadecanoic (0.1- 0.5 %), heptadecanoic (0.2-0.7 %), uneicosanoic (0.1-0.2 %), eicosenoic (0.1-0.3 %) and docosaenoic (0.1-0.2 %) acids only appeared in some ones. The showed results could motivate the cultivation and better use of several of these natural resources. [ABSTRACT FROM AUTHOR]

Copyright of Boletin de Geologia is the property of Universidad Industrial de Santander and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)