CERES

In this MSc thesis detailed sedimentologic, stratigraphic and chemostratigraphic analyses are used to investigate the evolution of the Eocene-Miocene sedimentary record along the San Jacinto Basin and San Jorge sub-basin of the Lower Magdalena Valley Basin in northern Colombia. The results from this MSc thesis allow improving the chronostratigraphic frameworks of these two basins. They also allow suggesting the occurence of diachronic units that deposited along these two basins.

This thesis was sponsored in part by the Colombian Asociation of Petroleum Geologists and Geophysicists.

In this work we present the C, O and Sr isotope chemostratigraphy in carbonates from Rosablanca Formation cropping out along La Mesa de Los Santos and Zapatoca, northeastern Colombia. The chemostratigraphic analyses allowed assigning an Valanginian - Lower Aptian depositional  age for the Rosablanca Formation. Important variations in the C isotope composition and 87Sr/86Sr values in carbonates allowed identifying the occurrence of the  Weissert ,Faraoni and Selly Oceanic Anoxic Events.

This thesis was sponsored in part by the Colombian Asociation of Petroleum Geologists and Geophysicists.

This senior undergraduate thesis presents stratigraphic, petrographic and chemostratigraphic information of the Aptian Lagunitas Formation, Cogollo Group, Cesar-Rancheria Basin. The Lagunitas Formation registered the OAE1a. The presence of shallow marine carbonate successions and the OAE1a suggest an important potential for the Cogollo Group as both oil generating and reservoir unit

This senior undergraduate thesis presents stratigraphic, petrographic and chemostratigraphic information of the Valanginian - Hauterivian Kesima Member of the Palanz Formation, Baja Guajira Basin. The Kesima Member registered the Weisert Oceanic Anoxic Even. The presence of shallow marine coral reef carbonate successions, bracketed by shallow marine sandstones, during the Weissert OAE  suggest few affection of the shallow marine biota. It also suggests   that the Kesima Member and in general  for the Palanz Formation display high potential as both oil generating and reservoir units.

In this work, detailed sequence stratigraphic information is combined with petrographic and detrital zircon U-Pb geochronologic data to investigate changes in the evolution of the continental sedimentary record along the San Jeronimo - Santa Fe  basin. This information is used to correlate the sedimentary record of the Amaga Formation along the San Jeronino- Santa Fe basin with that in the Amaga Basin, which contains economically important coal deposits. It is also used to contribute to the paleogeography of northern South America during the Oligo-Miocene and to investigate the collision between the Panama Block and northern South America. The geochronologic data suggest tha the collision occurred between 18 and 5 My.

This thesis was sponsored in part by the Colombian Asociation of Petroleum Geologists and Geophysicists.