The Geological Wonder of the Neuquén Basin.
The Geological Wonder of the Neuquén Basin.
The Geological Wonder of the Neuquén Basin.
As the Neuquén River winds from the Andes through the central-western part of Argentina to the Atlantic Ocean, a spectacular series of rock formations passes through the Neuquen Basin. For paleontologists, the basin is a great place to find fossils, particularly dinosaurs. And for those in the oil business, it is a fertile ground for oil and gas exploration.
the Operational Earth Imager (OLI) in Landsat 8 Acquired an image showing part of the basin on September 3, 2018.
From space, the boundaries between some of the major groups of sedimentary rock formations are visible. In the first image, the deep reds of the Candeleros Formation, a sequence of sandstones that formed approximately 90 to 100 million years ago in a system of braided rivers, dominate the landscape. These rocks are flanked in some areas, especially near the river, by a green-yellow sequence of rocks that are part of the youngest Húnica Formation, formed during the driest times. The old Royosa Formation, meanwhile, looks out through some areas where erosion has scraped the layers of rock that cover them. (See the second image.)
Paleontologists have discovered a great variety of fossilized fauna in the rocks of the candlesticks, including ancient species of fish, frogs, snakes, turtles, small mammals and various types of dinosaurs. Few of the fossilized creatures have received the notoriety of Giganotosaurus carolinii-A carnivorous theropod that is believed to be bigger and faster than Tyrannosaurs Rex.
Oil geologists are more interested in what lies under the Candeleros Formation. Several layers of rock, formed when the area was covered by an ocean, contain gas and oil. While drilling has been ongoing here since 1918, the recent discovery of a large deposit of shale gas and oil in the Dead cow formation has made the Neuquen Basin one of the few regions outside the United States where companies are performing horizontal drilling and hydraulic fracturing.
Images from the NASA Earth Observatory by Lauren Dauphin, using Landsat data from the United States Geological Survey. Story of Adam Voiland.
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