The integration of restored basin geometry and internal features of syntectonic units (e.g., stratal architecture, thickness, sandstone composition) with fl exural modeling of the lithosphere constrains the evolution of a basin and its fl exural history related to orogenic growth (spatial/temporal loading confi guration). Using this approach, we determined the Maastrichtian-Cenozoic polyphase growth of the Eastern Cordillera of Colombia, an inverted Mesozoic extensional basin. The record of this growth occurs in an Andean (post-middle Miocene) thrust belt (the Eastern Cordillera) and in adjacent foreland basins, such as the Llanos Basin to the east. This approach permitted the identification of fi ve tectono-stratigraphic sequences in the foreland basin and fi ve phases of shortening for the Eastern Cordillera. Thermochronological and geochronological data support the spatial and temporal evolution of the orogen-foreland basin pair. The geometry of tectonic loads, constrained by fl exural models, reveals shortening events of greater magnitude for the uppermost two sequences than for pre-middle Eocene sequences. Tectonic loads for the late Maastrichtian-middle Eocene phases of shortening were less than 3 km high and 100 km wide. For the late Eocene-middle Miocene phase, tectonic loads changed southward from 6 km to less than 4 km, and loads were wider to the north. The strong Andean inversion formed today's Eastern Cordillera structural confi guration and had equivalent tectonic loads of 10-11 km.Integrated analysis is necessary in polyphase orogenic belts to defi ne the spatial and temporal variation of tectonic load and foreland basin confi gurations and to serve studies that seek to quantify exhumation and threedimensional analyses of thrust belts. For the Bayona et al. 1172Geological Society of America Bulletin, September/October 2008 Eastern Cordillera, thermochronological sampling must span the width of the Eastern Cordillera rather than be concentrated in a single range.

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Ecopetrol's recent Gibraltar discovery was made in a previously little known area of the northern Llanos foothills of the Eastern Cordillera of Colombia. The structure at Gibraltar is complex and comprises a thrust stack with which are associated hangingwall anticlines providing four‐way closures (or three‐way against a sealing fault). The Gibraltar‐I well was originally drilled by Occidental in 2002. According to Ecopetrol's subsequent structural reinterpretation, this well penetrated the back limb of a fault propagation fold. This structural model was confirmed with a sidetrack well which penetrated the Palaeocene Barco Formation and demonstrated the presence of light hydrocarbons. A second objective of well re‐entry at Gibraltar was to investigate the Eocene Mirador Formation, a major reservoir unit elsewhere in the Llanos foothills, in case of missed or bypassed pay. Tests of the Mirador Formation verified the presence of high quality 57° API degree condensate that flowed at a rate of 690 barrels per day together with 44 million cubic feet of rich gas per day. The success at Gibraltar will hopefully encourage further exploration developments in this remote and structurally‐complex region.

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Introduction: Currently ocular combat injuries are complex and associated with poor visual outcomes. Our objective is to characterize the military population that suffer land mine combat ocular trauma in Colombia and indentify the type of wound, treatment and visual outcomes. Methods: Retrospectively review of medical history of soldiers evaluated in Pablo Tobon Uribe Hospital, whom had land mine trauma during January of 2004 and December 2012. Results: 635 soldiers had land mine trauma, 153 of them had ocular trauma (226 eyes). Open ocular trauma was observed in 29.6%. The Ocular Trauma Score was calculated in 183 eyes, the initial visual acuity was not possible to be reported in the rest of them; the 45% of the eyes were classified in category 3. Three patients had no light perception in both eyes. 97.3% of the eyes received medical treatment and 49.1% had surgery also. Primary evisceration was made in 5.8% and enucleation in 1.8%. Intraocular foreign body was observed by ultrasonography in 11.1% and in 5.8% by orbital tomography. Eleven patients were legally blind at discharge. Conclusions: The ocular trauma related to a landmine is highly destructive at an ocular level. The treatments associated with better visual outcomes are primary closure of globe and systemic antibiotics; although the characteristics of the wound itself are the main prognostic factor. The Ocular trauma score is a useful tool for determining visual outcome in combat ocular trauma.