 | | Report (issue) | | about 415,000 sq km in the south and east part of Venezuela. The study area is bounded on the north by Rio...Orinoco. It includes all of the Territorio Federal Amazonas, Estado Bolivar, and part of Estado Delta Amacuro...area Venezuela country and province borders clipped at the map neatline for plotting Venezuela province...to La Churuata (dated at 1,300 Ma), an alkaline complex to the south where aegirine, riebeckite, biotite...north of Cerro Duida (4°00' N., 65°30' W.) in the Amazonas Federal Territory. These rocks are weakly to moderately |  | | Report (volume) | | in the Gran Sabana region of Estado Bolfvar, Venezuela. View is southsoutheast toward Cerro Venado (left...Docs, no.: GPO119.3:2062 1. Geology Venezuela 2. Minerals Venezuela. 3. Guayana Shield. I. Corporaci6n...importance of this volume on the mineral resources of Venezuela lies not only in its delineation of the vast mineral...expanding the inventory of mineral deposits of Venezuela. Special features of this cooperative project...exploration, mineral production, and land use in Venezuela. Personnel of the Coporaci6n Venezolana de Guayana |  | | Report (issue) | | AND MINERAL DEPOSITS OF THE GUAYANA SHIELD IN VENEZUELA, BRAZIL, GUYANA, SURINAME, FRENCH GUIANA, AND............................................. 1 VENEZUELA.................................................deposits in the Precambrian Guayana Shield of Venezuela. The first task of the project is to identify...follows: 1) Venezuela and Guayana (or Guyana or Guiana) Shield, with 108 items; and 2) Venezuela and Economic...extracted 46 titles of dissertations that combined Venezuela and Geology. These listings were culled for applicability |  | | Book | | ........................................ 212 Venezuela ................................................there are also riebeckite microgranites and quartz syenites w i th about 10% riebeckite. Age K-Ar on hornblende...Aegir ine is sometimes found as overgrowths on riebeckite and is locally associated with astrophyllite...Age A K-A r age of 2057±56 Ma was obtained on riebeckite from granite. K-A r ages detern1ined on biotite...biotite, muscovite, horn blende and riebeckite range from 2057 to 2·1 66 Ma (Wanless et al, ] 979, pp. 34-8) |
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