Geomorphic and tectonic evolution of the Ecuadorian Andes
Andes ; Ecuador ; Fault ; Geomorphogenesis ; Mountain ; Planation ; Quaternary ; Tectonics ; Vertical movement ; Volcanism
the nature of tectonic processes, and provides a better understanding of the other geomorphic units, such as the volcanic chains and the Interandean Depression.
The results of the morphostructural analysis based on detailed geomorphologic mapping and on analysis of fissures and fault tectonics as well. The position and the altitude of the Paleogene planation surface relicts allow to assume tectonic
In Iceland, tectonics and volcanism, due to lithospheric spreading at the Mid-Atlantic Ridge, occurred during the last glaciation beneath an ice sheet approximately 1000 m thick. From a reconstruction of the flow patterns of this ice sheet, and from
simple calculations, the AA. illustrate how ice dynamics can be controlled by the geothermal heat flux associated with tectonic and volcanic activity.
Area of old hard rocks ; Czech Republic ; Fault ; Geomorphology ; Inselberg ; Tectonics ; Valley
Conspicuous Neogene tectonic forms, faultline valleys, fault-angle valleys, etc. were discovered in the SE marginal part of the Třebíč Massif. Relations between the Tertiary and older tectonics were studied. The regularity of special distribution
Le bassin de Montalbán est une dépression intramontagneuse située à l'intérieur de la chaîne Ibérique. Il est rempli par des sédiments syntectoniques du Tertiaire continental (de l'Eocène au Miocène inférieur), qui ont plus de 2000 m d'épaisseur
This note details geological mapping of a broad area situated in northern Sardinia which encompasses the historic regions of Logudoro and Mejlogu. The whole area lies within a well characterized Miocene tectonic depression, hereafter called Logudoro
This paper deals with the geologic and tectonic controls on drainage evolution in extensional basins. It examines the influence of the different lithologies that the rivers flow across, the presence or absence of transfer faults and intrabasinal
This paper presents the results of a litho- and biostratigraphic research, based on calcareous nannofossils, on the Mt. Rentella succession, tectonically sandwiched in between the Tuscan Nappe and the Umbrian autochthonous. - (NF)
Geochemical and geophysical monitoring in tectonically active areas of the Po Valley (Northern Italy). Case histories linked to gas emission structures
In some tectonically active areas of the Po river plain the ground surface is locally affected by collapse phenomena linked to gas escapes. In order to better identify these pockmarks-featured structures whose occurence seems to be proof
Alluvial cone ; Climatic variation ; Impact ; Nevada ; Palaeo-environment ; Quaternary ; Sedimentology ; Soil ; Stratigraphy ; Tectonics ; United States of America
fan deposits; relating the stratigraphy of alluvial fans to geomorphic features and deposits associated with the climatic and tectonic history of the basin; establishing a temporal framework for the stratigraphy and comparing it to that developed
The field research was complemented by morphometric analysis and by study of airborne photos. Main results of morphostructural analysis and an analysis of joint and fault tectonics are presented. Special attention was laid upon genetic relationship
The article deals with planation surfaces of Highland and with the development of its relief in the Upper-Tertiary. The existence of recent tectonic activity, indicated by height differences in the same planation levels, was proved. - (MS)