ABSTRACT:Carbonates of Cogollo Group (Apón, Lisure and Maraca formations) constitute the broader calcareous platform system originated during Aptian and Albian of Cretaceous in north-western South America, Maracaibo Basin, Venezuela. On the shallow shelf, a variety of calcareous sedimentary facies were deposited during marine transgressive and regressive cycles. Some of them developed porosity and constitute important hydrocarbon reservoirs. Due to some major marine transgressions, from early Aptian, the anoxic environment and characteristic facies of a pelagic environment moved from the outer slope and basin to the shallow shelf, during specific time intervals, favouring the sedimentation of organic matter-rich facies, which correspond to the oceanic anoxic events (OAEs) 1a and 1b. The source rock of Machiques Member (Apón Formation) was deposited during early Aptian OAE 1a (~ 120 Ma). The source rock of Piché Member, located at the top of the Apón Formation, was deposited during late Aptian OAE 1b (~ 113 Ma). Finally, La Luna Formation, from Cenomanian, that covers the OAE 2 (~ 93 Ma), represents the most important source rock in the Maracaibo Basin. In this way and based on sedimentological and organic geochemistry results from the determinations performed on 247 samples belonging to six cores in the Maracaibo Basin, we propose these two organic-rich levels, deposited on the shallow shelf of the Cogollo Group, as "effective source rocks", additional to La Luna Formation, with oil migration in relatively small distances to the porosity facies. KEYWORDS:
En este artículo están consignados algunos hitos históricos que permitieron explorar varios elementos genealógicos relacionados con los derechos humanos. Estos derechos representan una de las mayores conquistas de la humanidad, los cuales tienen su ápice en las declaraciones de la segunda mitad del siglo XX. En la búsqueda de esos principales hitos históricos de los Derechos Humanos en occidente, se revisó, en primer lugar, el periodo denominado primera modernidad, (siglos XVI y XVIII); en segundo lugar, el surgimiento de la Declaración del 10 de diciembre de 1948 y su repercusión en la época de la posguerra. Para este análisis, se trabajó con el método hermenéutico, pues se trataba de interpretar un fenómeno: los Derechos Humanos a través de algunos hitos históricos, a partir de un campo específico: la filosofía. Abstract In this article, was consigned some historical milestones that allow to explore several genealogical elements related with human rights. These rights represent one of the greatest achievements of humankind, which have their apex in the statements of the second half of the twentieth century.
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