Tectonique et évolution géomorphologique : l'exemple du bassin de Korçë (Albanie)/ Tectonics and geomorphological evolution: the example of the Korçë basin (Albania)

1999 ◽  
Vol 5 (2) ◽  
pp. 111-128 ◽  
Author(s):  
Jean-Jacques Dufaure ◽  
Eric Fouache ◽  
Michelle Denèfle
Keyword(s):  
Geomorphological Evolution

scholarly journals Geomorphological and Geochronological Analysis Applied to the Quaternary Landscape Evolution of the Yeltes River (Salamanca, Spain)

2020 ◽  
Vol 12 (19) ◽  
pp. 7869 ◽  
Author(s):  
Iván Martín-Martín ◽  
Pablo-Gabriel Silva ◽  
Antonio Martínez-Graña ◽  
Javier Elez
Keyword(s):  
Transfer Functions ◽  
Sedimentary Basins ◽  
Central Spain ◽  
Geomorphological Mapping ◽  
Fluvial Terraces ◽  
Digital Elevation ◽  
Late Neogene ◽  
Climate Evolution ◽  
Reported Data ◽  
Geomorphological Evolution

This paper aims to study the Quaternary geomorphological evolution of the Yeltes river-valley (Duero Basin, Central Spain) primarily based on the study of the Late Neogene piedmont dissected by the river and its Quaternary terrace sequence, since fluvial terraces are excellent archives to study the landscape and climate evolution during this period. Detailed geomorphological mapping implemented in GIS-based digital elevation models was used to the further applications of existing fluvial chronofunctions (relative terrace height-age transfer functions) to establish a numerical geochronology to the sequence of fluvial terraces in the zone. The obtained theoretical ages points to an onset of fluvial incision in the zone after 2.0–2.5 Myr ago, with the dissection of the “Raña surface” (a Gelasian alluvial piedmont widely developed in Central Spain). The obtained terrace ages coincide, in most cases, with warm isotopic stages (MIS) or mainly with the transit of cold to warm MIS. Additionally, this study suggests that the full connectivity of the Yeltes drainage (Ciudad Rodrigo Basin) with the Atlantic drainage was not completely effective until MIS 9 (c. 0.29 Myr). The new reported data allows for the exploration of the timing and processes involved in the capture of inland sedimentary basins (Ciudad Rodrigo, Duero basins) by the Atlantic drainage during the early Quaternary.

Geomorphological and neotectonic features of Hurd Peninsula, Livingston Island, South Shetland Islands

1995 ◽  
Vol 7 (4) ◽  
pp. 395-406 ◽  
Author(s):  
R. Pallàs ◽  
J.M. Vilaplana ◽  
F. Sàbat
Keyword(s):  
Tectonic Evolution ◽  
New Method ◽  
South Shetland Islands ◽  
Local Study ◽  
Lower Miocene ◽  
Shetland Islands ◽  
Livingston Island ◽  
Geomorphological Evolution ◽  
Method Of Correlation ◽  
Tectonic Movements

On Hurd Peninsula (Livingston Island) neotectonic features, such as faults, affect the landforms and emerged marine levels. A detailed local study of these features provides information on the recent structural and geomorphological evolution of the area. We suggest that Hurd Peninsula is divided into several tectonic blocks separated by faults. Movement of the faults determines the relative altitude of these blocks and, in consequence, their susceptibility to glacial, periglacial or marine processes. Although some of the tectonic movements reflected in the landforms may have been inherited from former phases of deformation, some of the neotectonic faulting has a maximum lower Miocene age. A new method of correlation of emerged beach levels is suggested and the possibility of analysing the effects of neotectonic deformations from their analysis is discussed. The application of the methods tested here to other areas of the South Shetland archipelago could provide insights into the timing and mechanisms of recent tectonic evolution.

scholarly journals The geomorphological evolution of a wave-dominated barrier estuary: Burrill Lake, New South Wales, Australia

2006 ◽  
Vol 187 (3-4) ◽  
pp. 229-249 ◽  
Author(s):  
Craig R. Sloss ◽  
Brian G. Jones ◽  
Charles E. McClennen ◽  
John de Carli ◽  
David M. Price
Keyword(s):  
New South ◽  
New South Wales ◽  
South Wales ◽  
Geomorphological Evolution

scholarly journals AN APPROACH TO THE CONTRIBUTION OF ANTHROPOGENIC ACTIONS FOR THE ARARUAMA LAGOONAL SYSTEM (SE BRAZIL) GEOMORPHOLOGICAL EVOLUTION / UMA ABORDAGEM SOBRE A INFLUÊNCIA ANTROPOGÊNICA NA EVOLUÇÃO GEOMORFOLÓGICA DO SISTEMA LAGUNAR DE ARARUAMA (SE, BRASIL)

2018 ◽  
Vol 3 (2) ◽  
pp. 108-120
Author(s):  
Olegário Nelson Azevedo Pereira ◽  
Maria Antonieta Da Conceição Rodrigues ◽  
João Manuel Alveirinho Dias
Keyword(s):  
Sea Level ◽  
Rio De Janeiro ◽  
Historical Documents ◽  
Before Present ◽  
Sea Level Changes ◽  
Economic Exploitation ◽  
Se Brazil ◽  
Geomorphological Evolution ◽  
Janeiro State ◽  
Cabo Frio

The first studies regarding the constitution of the Araruama lagoonal system, located in the Rio de Janeiro state (SE Brazil), were carried out by Alberto Ribeiro Lamego. This author supported the thesis that it had resulted from the formation of a sand barrier (called Massambaba) due to the longitudinal transport of large quantities of sediments through coastal drift currents, and the growth of spits parallel to the shoreline. However, most recent studies largely rejected it, sustaining that the confinement of these hydric environments was the result of the growth of two sand barriers during the Pleistocene and Holocene times (120.000 to 7.000 years before present - BP) due to the sea level changes. The hypothesis that we suggest, is that both propositions are acceptable and complementary. This study aims to demonstrate that, despite the opinions on the formation of the double sand barrier, deposition of sediments by coastal drift currents at the end of the Holocene, and especially in recent chronologies, also contributed to the establishment of this lagoon system. In our opinion, the increased sediment supplies due to human activities contributed to the formation of the inner spits and the nearby sea sandbar. Its orientation was influenced by the existence of the island of Cabo Frio, that allowed the formation of the tombolo that almost connected it to the continent. Through the analysis of historical and cartographic documents related to the colonization and economic exploitation of the region, it is evident that the anthropogenic actions played a significant role in the sandy spits formation. Of these, special emphasis is placed on the agriculture and deforestation that contributed to the increase of sedimentary accumulation. This work demonstrate that the analysis of historical documents can provide information and contribute to the understanding of recent coastal developments. ResumoOs primeiros estudos sobre a constituição do sistema lagunar de Araruama, localizado no estado do Rio de Janeiro (SE Brasil), foram realizados por Alberto Ribeiro Lamego. Este autor apoiou a tese de que este sistema lagunar resultou da formação de uma barreira arenosa (denominada Massambaba) na sequência do transporte longitudinal de grandes quantidades de sedimentos através das correntes costeiras de deriva litorânea e ao crescimento de flechas arenosas paralelas à linha de costa. No entanto, estudos mais recentes, rejeitaram amplamente esta hipótese, e sugeriram que o confinamento desses ambientes lagunares resultou do crescimento de duas barreiras arenosas na sequência de mudanças no nível do mar ocorridas durante os períodos Pleistocénicos e Holocênico (120.000 a 7.000 anos antes do presente - BP). A hipótese que sugerimos é que ambas as hipóteses são aceitáveis e complementares. Este estudo tem como objetivo demonstrar que, apesar das opiniões sobre a formação da dupla barreira de areia, a deposição de sedimentos por correntes de deriva costeira no final do Holoceno, e principalmente em cronologias recentes, também contribuiu para o estabelecimento deste sistema lagunar. Em nossa opinião, o aumento do fornecimento de sedimentos devido às atividades humanas contribuiu para a formação das flechas arenosas interiores e do banco de areia exterior, próximo do mar. A sua orientação foi influenciada pela existência da ilha de Cabo Frio, que permitiu a formação do tombolo que quase a conectou ao continente.Através da análise de documentos históricos e cartográficos relacionados com a colonização e exploração econômica da região, evidencia-se que as ações antropogênicas tiveram um papel significativo na formação das flechas arenosas. De entre estas, salienta-se especialmente a agricultura e o desmatamento que contribuíram para o aumento da acumulação sedimentar. Este trabalho evidencia que a análise de documentos históricos pode fornecer informações e contribuir para a compreensão da evolução recente do litoral.

Geomorphological evolution of longitudinal river profiles in the Carpathians

Geomorphology ◽  
2003 ◽  
Vol 50 (4) ◽  
pp. 293-306 ◽  
Author(s):  
Maria Rãdoane ◽  
Nicolae Rãdoane ◽  
Dan Dumitriu
Keyword(s):  
The Carpathians ◽  
River Profiles ◽  
Geomorphological Evolution
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