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| Format: | Artículo científico |
| Language: | en |
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Academia Brasileira de Ciências
2005
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| Online Access: | https://www.redalyc.org/articulo.oa?id=32777310 |
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| author | Patrick A. Hesp |
| author_facet | Patrick A. Hesp |
| contents | Beach ridges, foredunes or transgressive dunefields? Definitions and an examination of the Torres to Tramandaí barrier system, Southern Brazil Patrick A. Hesp Sergio R. Dillenburg Eduardo G. Barboza Ricardo N. Ayup-Zouain Nelson L.S. Gruber Elirio E. Toldo Luiz L.C. De A. Tabajara Luiz C.P. Clerot Luiz J. Tomazelli Luciana S. Esteves Multidisciplinaria (Ciencias Naturales y Exactas) Holocene beach ridges southern Brazil coastal barriers transgressive dunefields Many prograded barriers and some dunefields in theworld have been termed beach ridge plains, but the actualgenesis of the ridges is often unknown. Use of the terms, berms, beach ridges and foredunes is also confusingin the literature because their definitions are highly variable and are commonly used interchangeably. Thus,the formation and definition of sand berms, beach ridges and foredunes is briefly reviewed. Beach ridges arere-defined as entirely wave formed deposits which are most commonly formed during high wave conditionsand/or elevated water levels (e.g. storm surges). Foredunes are formed by aeolian sand deposition invegetation on the backshore. Some dunefields in Brazil have been called beach ridge plains when they are,in fact, foredune plains, transgressive dunefields, or complex barriers (i.e. barriers comprising two typesof dunes). The Holocene barrier extending from Torres to Tramandaí in southern Brazil has been regardedas a beach ridge plain. The landforms of this Holocene barrier comprise wide, relatively linear, widelyspaced (400600m), shore parallel ridges on the landward half, and more closely spaced (80400m), lobateand crescentic, discrete ridges on the seaward half. Low, rolling dunefields, sand sheets, nebkha fields anddeflation plains occur between the ridges. The barrier is re-interpreted as a prograded, transgressive dunefieldbarrier. 2005 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32777310 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.77 |
| format | Artículo científico |
| id | redalyc_32777310 |
| language | en |
| publishDate | 2005 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Beach ridges, foredunes or transgressive dunefields? Definitions and an examination of the Torres to Tramandaí barrier system, Southern Brazil Patrick A. Hesp Multidisciplinaria (Ciencias Naturales y Exactas) Holocene beach ridges southern Brazil coastal barriers transgressive dunefields Beach ridges, foredunes or transgressive dunefields? Definitions and an examination of the Torres to Tramandaí barrier system, Southern Brazil Patrick A. Hesp Sergio R. Dillenburg Eduardo G. Barboza Ricardo N. Ayup-Zouain Nelson L.S. Gruber Elirio E. Toldo Luiz L.C. De A. Tabajara Luiz C.P. Clerot Luiz J. Tomazelli Luciana S. Esteves Multidisciplinaria (Ciencias Naturales y Exactas) Holocene beach ridges southern Brazil coastal barriers transgressive dunefields Many prograded barriers and some dunefields in theworld have been termed beach ridge plains, but the actualgenesis of the ridges is often unknown. Use of the terms, berms, beach ridges and foredunes is also confusingin the literature because their definitions are highly variable and are commonly used interchangeably. Thus,the formation and definition of sand berms, beach ridges and foredunes is briefly reviewed. Beach ridges arere-defined as entirely wave formed deposits which are most commonly formed during high wave conditionsand/or elevated water levels (e.g. storm surges). Foredunes are formed by aeolian sand deposition invegetation on the backshore. Some dunefields in Brazil have been called beach ridge plains when they are,in fact, foredune plains, transgressive dunefields, or complex barriers (i.e. barriers comprising two typesof dunes). The Holocene barrier extending from Torres to Tramandaí in southern Brazil has been regardedas a beach ridge plain. The landforms of this Holocene barrier comprise wide, relatively linear, widelyspaced (400600m), shore parallel ridges on the landward half, and more closely spaced (80400m), lobateand crescentic, discrete ridges on the seaward half. Low, rolling dunefields, sand sheets, nebkha fields anddeflation plains occur between the ridges. The barrier is re-interpreted as a prograded, transgressive dunefieldbarrier. 2005 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32777310 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.77 |
| title | Beach ridges, foredunes or transgressive dunefields? Definitions and an examination of the Torres to Tramandaí barrier system, Southern Brazil |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Holocene beach ridges southern Brazil coastal barriers transgressive dunefields |
| url | https://www.redalyc.org/articulo.oa?id=32777310 |