Notch formation processes and cliff instability in pumice flow deposits on the Asama Mountain slope, Japan
The present study attempts to investigate 1) the factors influencing on the notch formation processus in cliffs with different orientations and 2) the mechanism of cliff failure occurring due to notch growth.
To study the effect of notch development on cliff collapse in Kuro-shima, Ryukyu Islands, the notch depth at which collapse occurs was calculated using stability analysis. Instability of a cliff increases with notch depth; collapse occurs
The aim of this paper is to use notches as sea level indicators to identify former shoreline positions in the area of Theologos and to show that their presence and development is associated with vertical movements of possible coseismic origin. First
, the genesis of notch shapes is discussed and a brief presentation of the geological setting and some archaeological and seismological information of the study area are summarized. Then, the methodology used and the main results obtained are presented
Emerged marine notches, hermatypic and autochtonous coral reefs, beach rocks and fossil intertidal barnacles collected in a living position at the level of the notches have revealed that a sudden uplift movement, reaching approx. 2,5 m in Central
, sandstone, dacite, rhyolite, and basalt, as well as other plutonic rocks. Notches, cliff-foot caves, and swamp slots are congeners of flared slopes. Though a few bedrock flares are conceivably caused by nivation or by a combination of coastal processes, most
Holocene emergent reefs and notches are well distributed on Rota and Guam. Relative sea-level changes at these islands are reconstructed based on geomorphological observations and borings on present and emergent reefs, together with 54 radiocarbon
to the zones of notch formation and high water content. Given the right conditions, salt weathering can occur not only in the arid regions but also in humid, temperate inland regions.
An attempt to estimate, with assumptions, the age of lines of elevated notches carved in limestone cliffs in Maré (Loyalty Islands) and in Makatea (Tuamotu Islands). (P.A. Pirazzoli.
Investigations on marine notches, beachrocks and emerged intertidal barnacles have shown that the southern part of Okinawa Island was uplifted about 2.5 m approx. 2400 years ago, probably as a result of a great earthquake of an estimated magnitude
Limestone cliff morphology on Curaçao (Netherlands Antilles), with special attention to the origin of notches and vermitid-coralline algal surf benches (corniches, trottoirs)