San Jorge Gulf

The Gulf San Jorge between the Argentine provinces of Chubut and Santa Cruz is a wide semicircular indentation of the Argentine Patagonian Sea in the territory of 80 nautical miles ( 148 km) depth and 132 nautical miles (244 km ) wide at its mouth.

It is in the north by the Cape Dos Bahías (coordinates: 44 ° 55 '0 "S, 65 ° 31 ' 0" W 44.916666666667 65.516666666667 - ) and in the south by the Cape Tres Punta (coordinates: 47 ° 6 '0 "S, 65 ° 51 '0 "W - 47.1 - 65.85 ) limited; the center of this great sea gulf located at the coordinates: 45 ° 59 ' S, 66 ° 41' W 45.983333333333 - 66.683333333333Koordinaten: 45 ° 59 ' S, 66 ° 41 ' W.

Its depth varies 73-101 meters. Its northern coast is full of cliffs and has numerous protected from the SW winds coves ( Leones, San Roque, Horno, Inglesa, Córdova, Malaspina, Visser, Olivares, Olivia ), Bais ( Bustamante, Solano ) and streams.

The whole coastal region is an area where the application of ports because of the large scattering width of the tides, the frequent winds and lack of fresh water on the surface is difficult. Nevertheless, it has created across thanks to the fish stock and the occurrence of hydrocarbons, deep-water ports and loading and unloading by buoys.

In the extreme west of the Gulf is the city of Comodoro Rivadavia, one overseas and fishing port.

The Caleta Olivia, Santa Cruz is located on its banks and is the headquarters of a major oil center in the region with a channel for the shipment of crude petroleum.

The Port of Caleta Paula has so far (2007) the last in the development of this area.

Rada Tilly is the most important seaside resort on its shores.


Among the attractions of the resort Rada Tilly counting:

  • Nature Reserve Cabo Dos Bahías.
  • The nature reserve Cañadón Duraznillo
  • Nature Reserve Cabo Blanco

These reserves are rich in birds ( penguins, albatrosses, cormorants, gulls, etc. ), amphibians ( elephant seals, sea lions, seals ), its waters are rich in fish and whales like the southern right whale especially on, the Orca and the tuna; in the continental zones of the aforementioned reserves the guanacos, rheas and jackals Andean subspecies Darwin Nandu are emphasized.

The basin of the Gulf of San Jorge

The Gulf San Jorge, caused by tectonic subsidence, includes a geological formation that extends to the south of the province of Chubut and Santa Cruz in the north of the province, as well as on the seabed. This geological basin is the result of switching between periods of marine retreat with continental sedimentation and sea rise with meeressedimentation while millions of years, which has generated underground storage of non-renewable fossil hydrocarbons ( oil and gas). The gas production is delivered via pipelines to Gran Buenos Aires, the oil production of this basin is mainly transported by tanker. The production of crude oil of this basin is the oldest in Argentina. As this fuel in 1901 was discovered by accident while drilled a well to supply the then small nest Comodoro Rivadavia with water, the significance of which it occupied, resulted in one short time later, the Argentine state-owned company YPF ( Yacimientos Petroliferos Fiscales ) founded and during the Second world War is created as a political department, the military zone of Comodoro Rivadavia. The main deposits of the basin of the Gulf of San Jorge are in the vicinity of the cities Comodoro Rivadavia, Caleta Olivia, Caleta Córdova, Pico Truncado and Las Heras.


  • Derrotero Argentino, parte II Pág. 257 y subsiguientes ( extracto ). Publicación H 202 Servicio de Hidrografía Naval, Armada de la República Argentina.
  • Bay (Atlantic Ocean )
  • Bay in South America
  • Geography (Argentina )
  • Province of Chubut
  • Santa Cruz Province (Argentina )