Occasional references to the relative tectonic instability of the Australian continent have been published over the last hundred years. Despite this, it was repeatedly claimed that the shield lands in particular were tectonically stable
, and as recently as this century reference has been made to a concept embracing a tectonically inert continent. However, analyses of seismicity and faulting and regional geological mapping revealed widely distributed tectonic forms and especially fault-related
Antarctica ; Climatic variation ; Glacial features ; Global change ; Ice sheet ; Sea level ; Tectonics ; Volcanism
There are two primary views concerning the stability of the East Antarctic Ice Sheet. After summarising the status of the two hypotheses, the AA. explain the rationale for this volume. Building on the Vega Symposium of April 1993, it presents
the case for the stability of the East Antarctic Ice Sheet and includes new work on terrestrial geomorphology and geology, marine cores and ice-sheet modelling.
From mass-wasting to slope stabilization – putting constrains on a tectonically induced transition in slope erosion mode : a case study in the Judea Hills, Israel
hillslope erosion had occurred. This transition possibly occurred due to the significant decrease in tectonic uplift during the late Cenozoic. The study area is characterized by sub-humid Mediterranean climate. The drainage hillslopes are typically mantled
of landslide activity in the drainage. The ages of a younger landslide remnant, alluvial terrace, and alluvial fan, all situated only a few meters above the present level of the active streambed indicate that since 688 the Soreq base level had stabilized
of the high Agri Valley. The geological evolution of the Agri Valley is essentially related to the Pleistocene extensional and strike-slip tectonics, overprinting older Apennine contractional structures. The geological formations recognized in the study area
are all related to the Lagonegro Basin domain. They are mostly characterized by abundant clay intervals, sudden lithological variations and diffuse structural complexities. The aim of the study is to achieve a better understanding of the stability
Landscape development in the Royal Society Range, southern Victoria Land, Antarctica : stability since the mid-Miocene
Antarctica ; Cenozoic ; Erosion surface ; Fluvioglacial features ; Geochronology ; Geomorphogenesis ; Glacial features ; Isotope dating ; Tectonics ; Vertical movement ; Volcanic ash
The AA. combine geomorphological mapping and landscape interpretation with geochronological data and an assessment of tectonic models to propose a history of post-rifting landscape development for the Royal Society Range. The aim is to set landscape
The AA. report tectonic settings and geological features of Patagonia briefly and discuss some structural and geomorphological aspects that could be used to infer directions of magmatic flow of nearly horizontal lavas and to test stability of rock
Cenozoic ; Central Europe ; Europe ; Geochronology ; Geomorphology ; Granite ; Kaolinite ; Mesozoic ; Palaeogeography ; Palaeogeomorphology ; Sudety ; Tectonics ; Weathering
primarily reflects long-term differences in tectonic and geomorphic stability of these 2 areas, accentuated through time. Moreover, weathering mantles are used to strengthen the argument for etched origin of many facets of Sudetic topography.
Structural stabilities of some soils were measured on aggregates sieved 2-1mm diameter. A hybrid index of structural stability is proposed to predict signs of likely structural instabilities of soils when subjected to mechanical and osmotic stresses
to evaluate the tectonicstability of the area which could have been an alternative explanation for their origin, few geomorphic indices, such as Mountain Front Sinuosity Indices (Smf), Basin Asymmetry (AF), Stream Length Gradient Index (SL index) and Valley
Floor to Width Ratio (Vf) were calculated. Results indicate that the study area had been affected by moderate tectonism in the past. During some of the past tectonic events, lineament controlled block or local uplift have affected these areas, causing
On the use of resistance envelopes to identify the controls on slope stability in the tropics
In tropical and sub-tropical slopes, soil suction may in certain circumstances play a role in maintaining slope stability. Resistance envelope methods are outlined that provide a means of assessing the threshold soil water conditions for stability
. Application to slopes in St.-Lucia, show the accordance of resistance envelope predictions with stability analysis results. A methodology for the geomorphological investigation of stability processes in tropical slopes is proposed.