Facies associations and controls on the evolution from a coastal bay to a lagoon system, Santa Catarina Coast, Brazil

Fornari, Milene; Giannini, Paulo César Fonseca; Nascimento, Daniel Rodrigues do

doi:10.1016/j.margeo.2012.07.010

Cited by 25 publications

(24 citation statements)

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“….................................................................................................................................... 9 Figura 4. Três fases de evolução reconhecidas para a região, segundo Fornari et al (2012): FEG 1 (7000 a 5000 anos cal AP); FEG 2 (5000 a 2500 anos cal AP); FEG 3 (2500 anos cal AP ao presente). .…”

Section: Figuraunclassified

“…Monções do Atlântico Sul -SMAS (Cruz et al, 2006, Vuille et al 2012 (Giannini, 1993(Giannini, , 2002Giannini et al, 2005Giannini et al, , 2007Giannini et al, , 2010Amaral et al, 2012;Fornari et al, 2012). (Angulo et al, 1999(Angulo et al, , 2006, ou pouco antes disso; as porções do sistema lagunar formadas por estes dois tipos de processos foram denominadas respectivamente baía-laguna e vale-laguna (Giannini 2002 (Giannini, 1993(Giannini, , 2002 e também aos atuais vales de inundação dos rios Sangão e Riachinho (Giannini, 2002;Amaral et al, 2012)…”

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O registro climático e ambiental das conchas de sambaquis e depósitos paleolagunares na costa centro-sul Catarinense

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O registro climático e ambiental das conchas de sambaquis e depósitos paleolagunares na costa centro-sul Catarinense

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“…The frequent presence of whole and fragmented shells in sediments correlated to RFS1 is a common feature of the palaeolagoon depositional system in the region (Fornari et al, 2012;Giannini, 1993), which allows for the assignment of RFS1 to this system. RFS2 contains layers that have apparent gentle dips (6°) to the SE, W or SW and a high amount (65%) of medium sand.…”

Section: Stratigraphic and Sedimentological Significance Of Radarfaciesmentioning

confidence: 99%

Radarfacies and sedimentological analysis: Study of sedimentary substrate from an archaeological site (shell mound), southern Brazil

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Integrated results of GPR (Ground Penetrating Radar) and sedimentological analysis are presented for the Jabuticabeira II archaeological site (shell mound), Santa Catarina, Brazil. By means of radarfacies identification, this study aims to delimit the archaeological site and differentiate the coastal depositional systems that compose its substrates. For these purposes, available models of the temporal-spatial distribution of depositional systems in the area were used and sedimentological analysis (granulometry, quantification of heavy minerals and clay-mineral characterization) were performed on samples spaced at 0.5-m vertical intervals in auger drills cutting the identified radarfacies. GPR data were obtained along a radial grid, which allowed the rapid mapping of a large area (several hundred square metres). The results allowed to characterize an archaeological layer, the soil and two sedimentary layers (palaeolagoon and aeolian) in the substrates under and around the site. The high porosity and the grain size, cementation and heavy mineral segregation contrasts along wind-controlled laminations are for the reflector sharpness in the aeolian deposits. The archaeological site settlement mostly overlies the palaeolagoon, which was a newly emerged land during the epoch of occupation and is situated on the margins of aeolian deposits that formed in the region after the Holocene maximum flooding. This configuration reinforces the sambaquis occupation model of south-central Santa Catarina during the Holocene, strongly controlled by the proximity to lagoon bodies. The resolution of the data in this study was sufficient to advance our understanding of the regional sedimentary evolution and its relation with sambaqui occupation.

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“…They are defined as wave-and wind-built landforms in the inter-and supra-tidal zones, which occur as relict, linear mounds and are semi-parallel to the coast (Tanner, 1995;Otvos, 2000). The emplacement of barriers in a wave-dominated coast such as the central Kerala coast is seen as a complex response to change in sea level, substrate gradient, sediment supply and energy conditions (Carter, 1986;Roy et al, 1994;Cowell and Thom, 1994;Fornari et al, 2012). On such a coast, the progradational beach ridge succession of sediments would consist of lower shoreface (SF), foreshore (FS), backshore (BS) and (aeolian) dunes in ascending order (Saito, 2005).…”

Section: Introductionmentioning

confidence: 99%

Evidence of Late Holocene shoreline progradation in the coast of Kerala, South India obtained from OSL dating of palaeo-beach ridges

et al. 2015

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Facies associations and controls on the evolution from a coastal bay to a lagoon system, Santa Catarina Coast, Brazil

Cited by 25 publications

References 41 publications

O registro climático e ambiental das conchas de sambaquis e depósitos paleolagunares na costa centro-sul Catarinense

O registro climático e ambiental das conchas de sambaquis e depósitos paleolagunares na costa centro-sul Catarinense

Radarfacies and sedimentological analysis: Study of sedimentary substrate from an archaeological site (shell mound), southern Brazil

Evidence of Late Holocene shoreline progradation in the coast of Kerala, South India obtained from OSL dating of palaeo-beach ridges

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