Kenitiro Suguío

Instituto de Geociencias

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Louis Martin

Team (Italy)

Alethéa Ernandes Martins Sallun

Instituto Geológico

Alcina Magnólia Franca Barreto

Universidade Federal de Pernambuco

Bruno Turcq

Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques

Francisco H.R. Bezerra

Universidade Federal do Delta do Parnaíba

Sônia Hatsue Tatumi

Universidade Federal de São Paulo

François Soubiès

Institut de Recherche pour le Développement

Jean-Marie Flexor

National Observatory

J.M. Flexor

National Observatory

Paulo Eduardo de Oliveira

Field Museum of Natural History

Cooperative Institutions

Universidade de São Paulo

Instituto de Geociencias

Institut de Recherche pour le Développement

Guarulhos University

Universidade Federal do Rio de Janeiro

Universidade Estadual Paulista (Unesp)

Centre National de la Recherche Scientifique

Universidade Brasil

Universidad San Pedro

Hospital Universitário da Universidade de São Paulo

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Shell middens as a source for additional information in Holocene shoreline and sea-level reconstruction: examples from the coast of Brazil

Springer eBooks (1986)

Martin Lemke Kenitiro Suguío J.M. Flexor

Midden

10.1007/978-94-009-4215-8_18

Cite

Citations (27)

Quaternary Sea-level History and Variation in Dynamics along the Central Brazilian Coast: Consequences on Coastal Plain Construction

Anais da Academia Brasileira de Ciências (1996)

Louis Martin Kenitiro Suguío Jean-Marie Flexor José Maria Landim Domínguez Abı́lio Carlos da Silva Pinto Bittencourt

The central part of the Brazilian coast experienced considerable relative sea-level fluctuations during the Quaternary. It has been possible to identify three high marine levels. The last two, during which the sealevel was at a maximum S k 2m (123,000 yr BP) and 4,s * 0.5117 (5,100 yr BP) above the current level, have left substantial records, whose identification was possible due to numerous absolute datings. This sealevel history had a profound effect on the evolution of sedimentary plains. Wave energy, tidal range and river loads, for example, have been considered as the most important factors in the classical models of coastal sedimentation. However, the role played by relative sea-level changes has been not much considered. Probably, this is due to the fact that the models have been proposed by authors from the northern hemisphere countries, where most commonly the present sea-level is the highest during the Holocene time. This is not the case of Brazil, where most part of the coast was submerged until 5,100 yr BP followed by emergence up today, abstracting two quick oscillations. Obviously, the coastal dynamics could not be the same during relative sea-level rise or sea-level drop. The equilibrium profile of a sandy coast will be destroyed with sea-level changes and its restoration will be accompanied by transfer of sands, from backshore and adjacent land areas to foreshore during sea-level rise and from foreshore to backshore during sea-level drop. During submergence periods (relative sea-level rise), barrier-island/lagoonal systems ere dominant and the rivers could reach protected areas, as lagoons and estuaries, to build deltas. In contrast. a sea-level fall creates highly unfavourable conditions for the genesis and maintenance of barrier island/lagoonal systems. Lagoons and bays become emergent and beach-ridge plains rapidly prograde, resulting in regressive sand sheet. When fossil beach-ridges are present, their geometry reflects the past directions of longshore transport. This makes it possible to determine the provenance of past efficient swells and to establish the past wind patterns. Paleogeographic reconstructions supported by numerous radiocarbon datings allowed us to recognize the essential role played by relative sea-level changes, associated with longshore transport of sediments and paleoclimatic fluctuations, in the formation of the coastal plains in Brazil.

Coastal plain

Post-glacial rebound

Source

Cite

Citations (93)

Características granulométricas dos materiais de escorregamentos de Caraguatatuba, São Paulo, como subsídio para o estudo da sedimentação neocenozóica no sudeste brasileiro

Setembrino Petri Kenitiro Suguío

Source

Cite

Citations (2)

Stratigraphy of the Iguape-Cananéia lagoonal region sedimentary deposits, São Paulo State - Brazil: part II: heavy minerals studies, microorganisms inventories and stratigraphical interpretations

Boletim IG (1973)

Setembrino Petri Kenitiro Suguío

This paper deals, with the studies of the heavy minerals and microorganisms contained in the sediments of the Iguape-Cananeia lagoonal region. The microorganisms from the subsurface samples and from the present different environments were compared. As a result an inestimable tool was acquired for the reconstruction of the areal sedimentation history. The heavy minerals gave indications about the source rocks of the sediments, mostly concerning to the regressive sands, blanket sands type deposits (KRUMBEIN and SLOSS, 1963, p. 550). The presence of well distinctive four sedimentation unities were recognized as a record of the geological events in the area. The Pariquera-Acu Formation, old alluvial deposits spreaded in the Ribeira de Iguape hydrographic basin, particularly along the course of the Jacupiranga River (as indicated in the map of FRANZINELLI, 1970), was here recognized as a direct consequence of the quaternary events, occurred downstream, in the Iguape-Cananeia lagoonal region.

Sedimentation

10.11606/issn.2316-8978.v4i0p71-85

Cite

Citations (22)

Composição isotópica de carbono e oxigênio de conchas de pelecípodos do litoral brasileiro e seu significado ambiental

Boletim IG (1979)

J. R. M. da Silva Enéas Salati Kenitiro Suguío

Carbon and oxygen isotopic compositions have been determined on modern pelecypod shells and ancient pelecypod shells whose ages had been measured by the radiocarbon method. The modern shells collected along the Brazilian coastline in order to identify possible isotopic composition trends in the shells of the pelecypods living along this coastline. The ancient pelecypod shells were collected mostly from the Cananéia-Iguape coastal plain (State of Sao Paulo). The isotopic composition ratios of these samples can be correlated with sea-level fluctuations during the Holocene, whose transgressive and regressive phases left their own typical isotopic compositions imprinted on these shells. Some samples of freshwater pelecypod shells were also analysed to establish the limites of δC13 and δO18 in fluviatile and lacustrine environments. The analytical results showed that isotopic composition can be used to distinguish between pelecypod shells in freshwater environments from those in saltwater environments, as previously has been verified elsewhere. This fact demonstrates that biological control of the isotopic fractionation mechanisms may be overriden by environmental controls.

10.11606/issn.2316-8978.v10i0p79-90

Cite

Citations (2)

STRATlGRAPHY OF THE IGUAPE-CANANÉIA LAGOONAL REGION SEDIMENTARY DEPOSITS, SÃO PAULO STATE, BRAZIL

Kenitiro Suguío Setembrino Petri

Source

Cite

Citations (0)

Tectonismo pós-deposicional na Bacia de Taubaté, SP

Kenitiro Suguío J. B. O. Vespucci

Source

Cite