2019
DOI: 10.22564/rbgf.v37i4.2014
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Seismic Stratigraphy of Trapandé Bay (Southern Brazil) to Study Sea-Level Changes and Deposition Evolution in the Upper Quaternary

Abstract: ABSTRACT. The Quaternary relative sea-level in the Southeastern Brazilian margin is mostly studied using a sedimentary approach. In this work, we used high-resolution seismic and bathymetric data to study the depositional evolution in the Quaternary of Trapandé Bay, in São Paulo State, Brazil. Using seismic stratigraphy, we have analyzed over 198 km of seismic sections and we interpreted 6 seismic horizons which defined 5 seismic units. The oldest unit (U1) is related to the highstand deposits developed during… Show more

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“…Several studies applied high-resolution singlechannel seismic surveys to investigate the sedimentary evolution and the architecture of Quaternary deposits (Cooper et al, 2018;Ronchi et al, 2018;Rangel & Dominguez, 2019). However, the processing flow applied to the data comprises only standard processes, such as spherical divergence and amplitude correction, frequency filters, and average filters (Pepe et al, 2018;Rodrigues et al, 2019;Alves & Mahiques, 2019). Such workflows are ineffective in exploring the characteristics of the sparker source, and removing or suppressing short-path multiples that appear after the primary (Duchesne et al, 2007).…”
Section: Introductionmentioning
confidence: 99%
“…Several studies applied high-resolution singlechannel seismic surveys to investigate the sedimentary evolution and the architecture of Quaternary deposits (Cooper et al, 2018;Ronchi et al, 2018;Rangel & Dominguez, 2019). However, the processing flow applied to the data comprises only standard processes, such as spherical divergence and amplitude correction, frequency filters, and average filters (Pepe et al, 2018;Rodrigues et al, 2019;Alves & Mahiques, 2019). Such workflows are ineffective in exploring the characteristics of the sparker source, and removing or suppressing short-path multiples that appear after the primary (Duchesne et al, 2007).…”
Section: Introductionmentioning
confidence: 99%