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@Article{Rossetti:2014:ImUnNe,
               author = "Rossetti, Dilce de F{\'a}tima",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Imaging underwater neotectonic structures in the Amazonian 
                         lowland",
              journal = "Holocene",
                 year = "2014",
               volume = "24",
               number = "10",
                pages = "1269--1277",
             keywords = "Amazonia lowland, Holocene, morphostructural lineaments, 
                         neotectonics, remote sensing, shallow lakes.",
             abstract = "Previous documentation has proposed tectonic activity from the 
                         Neogene to Holocene as one important control on drainage 
                         development in the Amazonian lowland. However, recording tectonic 
                         structures in this region has been challenging due to 
                         environmental difficulties, including the low topography and dense 
                         vegetation cover that do not favor natural exposures. For this 
                         reason, the role of tectonics in determining river dynamics, 
                         morphology, and sediment deposition in Amazonia has been suggested 
                         with caution. Despite limitations, morphostructural lineaments 
                         have provided useful information to support fault reactivation in 
                         several areas of the Amazonian lowland. However, further 
                         documentation is required to map the faults and describe their 
                         geometry. This approach is essential to better understand the 
                         geotectonic model of this region. In this work, analyses of 
                         high-resolution optical imagery of three Amazonian shallow water 
                         lakes provided exceptional views of an abundance of linear 
                         features on the beds of these lakes. Although based on indirect 
                         evidence from remote sensing data, the quality of the images 
                         allowed the geometry of these underwater features to be 
                         characterized in detail. The most striking are sets of NESW 
                         lineaments that frequently intercept NWSE trending lineaments with 
                         offsets of up to 500 m in the horizontal plane. These 
                         characteristics support dextral faults with strikeslip rates in 
                         the study areas. The faults display trends compatible with the 
                         geotectonic model proposed for the Brazilian Amazonia region. They 
                         also control the morphology of lakes and rivers, as indicated by 
                         the parallelism and/or continuity into straight lineaments that 
                         define lake margins and river courses, including the courses of 
                         large rivers, such as the Solim{\~o}es and Amazonas Rivers. 
                         Available radiocarbon ages of deposits from the lake bed sediments 
                         and from related floodplain deposits are consistent with the 
                         proposal of faulting during the latest Holocene, even only a few 
                         hundred years ago.",
                  doi = "10.1177/0959683614540950",
                  url = "http://dx.doi.org/10.1177/0959683614540950",
                 issn = "0959-6836",
                label = "scopus 2014-11 Rossetti:2014:ImUnNe",
             language = "en",
        urlaccessdate = "26 nov. 2020"
}


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