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| Format: | Artículo científico |
| Language: | en |
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Academia Brasileira de Ciências
2006
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| Online Access: | https://www.redalyc.org/articulo.oa?id=32778317 |
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Table of Contents:
- Shallow gas accumulation in sediments of the Patos Lagoon, Southern Brazil Jair Weschenfelder Iran C. S. Corrêa Salvador Aliotta Carla M. Pereira Vinicius E. B. de Vasconcellos Multidisciplinaria (Ciencias Naturales y Exactas) shallow gas 5 kHz seismic coastal plain Rio Grande do Sul A high resolution seismic survey was conducted in the Patos Lagoon, southern Brazil, aboard of the researchvessel LARUS of the Fundação Universidade Federal do Rio Grande (FURG). Around 400 km of 3.5 kHzseismic profiles were collected, which provided acoustic signals of good penetration depth and resolution.Seismic anomalies, including turbidity and pocket gas, revealed that gas-charged sediments are common inseveral areas of the lagoon. The gas accumulations in the Patos Lagoon are controlled by the spatial distributionof the sedimentary facies. Either in curtains or in acoustic turbid zones, the main gas accumulationsoccur in areas with paleotopographic lows related to fluvial channels and valleys developed in the Rio Grandedo Sul coastal plain during regressive/transgressive events of the Quaternary. 2006 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32778317 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.78