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dc.contributor.advisorLatrubesse, Edgardo
dc.creatorClause, Vincent Anthonyen
dc.date.accessioned2014-11-18T17:21:52Zen
dc.date.issued2014-08en
dc.date.submittedAugust 2014en
dc.identifier.urihttp://hdl.handle.net/2152/27555en
dc.descriptiontexten
dc.description.abstractGeography and the Environmenten
dc.description.abstractStudies of the Amazon drainage network have primarily focused on the Western Basin and the Amazon Cone, but they have neglected the integration between these areas. Data presents a time gap in the Amazon’s development and the forces responsible for the organization of the drainage network are poorly understood. A key element towards gaining an improved awareness of the Amazon is the Eastern Amazon River Valley. The focus of this study is an 80,000 km² portion of this area. An integrated method is adopted that combines terrain information derived from a digital elevation model with geologic data. The interpretation of DEM data is unique to this study. Seven distinct surfaces were identified, along with numerous erosional environments. This observation supports a geomorphologic record of numerous erosional events starting in the Miocene. This finding is significant as it rejects previous models for staircase-like terraces for the Amazon, and establishes a timeline for the development of geomorphologic landforms in the study area. In addition, neotectonics events provide an alternative explanation to the generation of topography in the study area. It was concluded that geomorphology in the study area is the result of physical and chemical weathering, and modified by neotectonics. These findings provide alternative means for Amazon landscape evolution.en
dc.format.mimetypeapplication/pdfen
dc.subjectLower Amazonen
dc.subjectGISen
dc.subjectSRTMen
dc.subjectGeomorphologyen
dc.subjectFluvial systemen
dc.subjectLong-term landscape evolutionen
dc.subjectEastern Brazilen
dc.titleIntegrating geologic and SRTM data to identify geomorphologic landforms in the Eastern Amazon River Valleyen
dc.typeThesisen
dc.date.updated2014-11-18T17:21:52Zen
dc.description.departmentGeography and the Environment
thesis.degree.departmentGeography and the Environmenten
thesis.degree.disciplineGeographyen
thesis.degree.grantorThe University of Texas at Austinen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Artsen


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