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Abstract

Depressions in the ocean bottom have been investigated on Santos Basin at Parana and Santa Catarina State<br>slope and shelf. Depressions are in depth range of 900 to 400 m water depths with shapes from circular (most<br>commons) to elliptical. Their diameter are from 900-1000 m to 400 m and relief from 75 to 40 m. Depressions are<br>aligned along faults parallel to shelf break. Records of 3.5 kHz shows that reflectors merge and pinch out toward<br>the center of depressions indicating that they are collapsed structures. Bottom samples have collected silty<br>sand with bivalves and detected presence of a hard ground. All these evidences associated with similar<br>examples from literature suggest that the depressions were caused by seeps of hydrocarbons. Despite not<br>being a precise tool, this technique can be used in other Brazilian basins in order to discover potential oil<br>reserves.

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/content/papers/10.3997/2214-4609-pdb.215.sbgf352
1999-08-15
2021-10-17
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609-pdb.215.sbgf352
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