2 documents found, page 1 of 1
Paleochannels related to late quaternary sea-level changes in Southern Brazil
Weschenfelder,Jair; Corrêa,Iran Carlos Stalliviere; Aliotta,Salvador; Baitelli,RicardoThe geological evolution of the continental shelf and in the coastal zone of southern Brazil during the Quaternary period is addressed in this study. High-resolution seismic records obtained at the Patos Lagoon revealed the presence of channels that deeply dissected the coastal zone before the formation of the modern, low-relief, coastal plain. Two periods of channel incision are inferred, based mainly on seism...
Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazil
Weschenfelder,Jair; Corrêa,Iran C.S.; Aliotta,Salvador; Pereira,Carla M.; Vasconcelos,Vinicius E.B. deA high resolution seismic survey was conducted in the Patos Lagoon, southern Brazil, aboard of the research vessel LARUS of the Fundação Universidade Federal do Rio Grande (FURG). Around 400 km of 3.5 kHz seismic 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 ...