Note: p. 196 missing

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O presente trabalho tem como finalidade apresentar os resultados obtidos no Zoneamento Geotécnico Geral da Folha de Americana/SP, na escala 1:50.000, através do mapeamento geotécnico e o levantamento das características dos atributos do meio físico representados pelo substrato rochoso, material inconsolidado e landforms da área, utilizando como base a metodologia proposta pela Escola de Engenharia de São Carlos - USP (Zuquette, 1987). Como ferramenta de auxílio do trabalho foram utilizados a Técnica de Avaliação de Terreno, de acordo com Lollo (1996), e o Sistema de Informações Geográficas (SIG-Idrisi 32), que auxiliaram na otimização dos trabalhos e manipulação dos dados obtidos, resultando na geração dos documentos cartográficos de forma satisfatória. Por fim, foram elaborados os seguintes documentos cartográficos : Mapa de Documentação, Mapa de Substrato Rochoso, Carta de Declividade, Mapa de Rede de Drenagem, Mapa de Materiais Inconsolidados, Mapa de Landforms e a Carta de Zoneamento Geotécnico Geral. / This research has the proposal of presenting General Geotecnical Zoning of the square of Americana/SP with of 1:50.000 scale, considering geotechnical mapping and the physical environment attributes characteristics associated to geology, unconsolidated material and landforms, developed in accordance to adopted methodology at \"Escola de Engenharia de São Carlos\" (Zuquette, 1987). The tools \"Técnica de Avaliação de Terreno\" based at Lollo (1996), and the Geographical Information System (GIS-Idris 32) were to used optimization and confidence on the obtained results analysis handling of the information to generation cartographic documents. The cartographic documents were elaborated study area : Documentation Map; Geological Map; Declivities Chart; Unconsolidated Materials Map; Landforms Map; Drainage Network Map and General Geotecnical Zoning Map.

O presente trabalho tem como finalidade apresentar os resultados obtidos no Zoneamento Geotécnico Geral da Folha de Americana/SP, na escala 1:50.000, através do mapeamento geotécnico e o levantamento das características dos atributos do meio físico representados pelo substrato rochoso, material inconsolidado e landforms da área, utilizando como base a metodologia proposta pela Escola de Engenharia de São Carlos - USP (Zuquette, 1987). Como ferramenta de auxílio do trabalho foram utilizados a Técnica de Avaliação de Terreno, de acordo com Lollo (1996), e o Sistema de Informações Geográficas (SIG-Idrisi 32), que auxiliaram na otimização dos trabalhos e manipulação dos dados obtidos, resultando na geração dos documentos cartográficos de forma satisfatória. Por fim, foram elaborados os seguintes documentos cartográficos : Mapa de Documentação, Mapa de Substrato Rochoso, Carta de Declividade, Mapa de Rede de Drenagem, Mapa de Materiais Inconsolidados, Mapa de Landforms e a Carta de Zoneamento Geotécnico Geral. / This research has the proposal of presenting General Geotecnical Zoning of the square of Americana/SP with of 1:50.000 scale, considering geotechnical mapping and the physical environment attributes characteristics associated to geology, unconsolidated material and landforms, developed in accordance to adopted methodology at \"Escola de Engenharia de São Carlos\" (Zuquette, 1987). The tools \"Técnica de Avaliação de Terreno\" based at Lollo (1996), and the Geographical Information System (GIS-Idris 32) were to used optimization and confidence on the obtained results analysis handling of the information to generation cartographic documents. The cartographic documents were elaborated study area : Documentation Map; Geological Map; Declivities Chart; Unconsolidated Materials Map; Landforms Map; Drainage Network Map and General Geotecnical Zoning Map.

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River systems, such as the Columbia River in the Pacific Northwest, USA have been influenced by human activities, resulting in changes to the physical processes that drive landform evolution. This work describes an inventory of landforms along the Columbia River estuary between the Pacific Ocean and Bonneville Dam in Oregon and Washington. Groupings of landforms are assigned to formative process regimes that are used to assess historical changes to floodplain features. The estuary was historically a complex system of channels with a floodplain dominated by extensive tidal wetlands in the lower reaches and backswamp lakes and wetlands in upper reaches. Natural levees flank most channels in the upper reaches, locally including areas of ridge and swale topography and crevasse splays that intrude into backswamps. Other Holocene process regimes affecting floodplain morphology have included volcanogenic deltas, tributary fans, dunes, and landslides. Pre-Holocene landforms are locally prominent and include ancient fluvial deposits and bedrock. Historical changes to streamflow regimes, floodplain isolation by flood-control systems, and direct anthropogenic disturbance have resulted in channel narrowing and limited the amount of floodplain that can be shaped by flowing water. Floodplain isolation has caused relative subsidence of tidal floodplains along much of the lower estuary. Most extant landforms are on trajectories controlled by humans and new landforms are mostly created by humans.

Erratics and perched boulders in the summit areas indicate total glaciation of the eastern Mealy Mountains. The widespread absence of frost-weathered detritus and the smoothed bedrock of several summits suggest a complete ice cover during the last major glaciation in southern Labrador. [...]

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