area of Jezeří Castle. Indicated are the types and regime of these movements which are climatic, tectonic and anthropogenous in origin. Both slightly and strongly deformed zones in the near-surface part of crystallinerocks massif were formed
The 10Be exposure method was applied to 21 samples of crystallinerocks from cirques, roches moutonnées, tors and glacial sediments in two valleys of Giant Mts. in the Bohemian Massif : the Obři důl and the Labský důl. Geomorphological evidence
Nedknusing av bergartsfragmenter og mineralkorn ved bretransport Crushing of rock fragments and mineral grains by glacial transport
by the distribution of mineral grains from sedimentary rocks and crystallinerocks in the tills of Southern Ringsaker, Southeastern Norway. The bimodal distribution of each lithological till component can commonly not be observed on the grain-size distribution curves
The crushing of mineral material and the formation of resistant mineral modes during the glacial transport are mainly dependant on the primary properties of the mineral material, inherited from the parent rock. This is illustrated
Arid area ; Crystallinerocks ; Grain size distribution ; Granite ; Pediment ; Saudi Arabia ; Slope ; Slope gradient ; Statistics ; Surface deposits
The proposition that pediment slope is related to debris-size is shown to be flawed. This notion was examined on 15 traverses on rock-cut pediments in the southern Hijaz region of western Saudi Arabia. Complete particle size analyses
in the Upper Engadin, southeastern Switzerland. This area consists of sedimentary rocks, mainly limestone and shale, and basement crystallinerocks, mainly gneiss, schist and granite.
. Second, the AA. show through XRD, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) that the Mn phase in rock varnish is by most definitions a non-crystalline phase with an affinity for a number of cations not normally present
The purpose of this paper is first to show that whether or not biomineralization processes are instrumental in the formation of all rock varnish, they apparently affect the morphology of varnish and, hence, the distribution of Mn within the varnish
The significance of rock structure, lithology and pre-glacial deep weathering for the shape of intermediate-scale glacial erosional landforms
Cold area ; Crystallinerocks ; Glacial erosion ; Glacial features ; Glacial striation ; Lineament ; Lithology ; Photointerpretation ; Roche moutonnée ; Sweden ; Weathering
To explore the effects of multiple glacial erosion on the rock surfaces, an island with 2 different lithologies and with striae from different directions was selected for a detailed study, focusing on the shape of roches moutonnées. Air-photo
of these crystalline pebbles is very similar to that of the syn-late-Hercynian plutonic bodies and of the gneissic rocks widesspread in the Calabria-Peloritani Arc and, probably, the Kabylides. The AA. believes that this crystalline detritus could represent the product
The results showed that, with small free samples, there was no apparent temperature difference between those on the surface and inside the blocks. Rock temperatures varied with those of freeze-thaw cycles but appeared relative stable when
Effects of biokarstic processes on the development of solutional rillenkarren in limestone rocks
Baleares ; Biogenic process ; Carbonate rock ; Chemical erosion ; Karren ; Karst ; Mallorca ; Micromorphology ; Precipitation ; Spain
by the impact of raindrops but their effect seems greatly increased when algal cells have previously corroded the surface of the limestone, weakening its crystalline structure. These fragile micromorphologies of biokarstic origin are fundamental