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clborba: Wind marks
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clborba: Microdunes at Aruana beach, Aracaju
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clborba: Shear zone in sandstones of Miocene Barreiras Formation, Sergipe Basin, Brasil
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clborba: Lower K Fluvial Sandstones
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clborba: Aptian Turbidites
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clborba: Rio Vaza Barris
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clborba: From my window
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clborba: Aruana Beach
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clborba: Praça Mauá, Rio de Janeiro
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clborba: Oolitic grainstone, Riachuelo Formation (Albian), From Maruim, Sergipe, BR
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clborba: The 5 rivers of Sergipe: Sao Francisco, Japaratuba, Sergipe, Vaza Barris and Real.
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clborba: Barreiras Fm cliffs at Pirambu, SE. Pleistocene dunes above.
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clborba: Albian Stromatoliths at the "geopark", Rosario do Catete, SE, Brasil
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clborba: Feeding tambaquis at Abais Lagoon
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clborba: Geologists at work
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clborba: Jellyfish in the Vaza Barris waters
gail m tang: Rio Celeste
gail m tang: Two-toed sloth
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clborba: Lighthouse of Mangue Seco
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clborba: Searching Venus at Mangue Seco
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clborba: Aeolian dune, Cross stratification at Mangue Seco, Bahia
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clborba: Grainfall & Grainflow at Mangue Seco
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clborba: Grainflow fan at Mangue Seco dunes