siliciclastic


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siliciclastic

[‚sil·ə·si′klas·tik]
(petrology)
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For the northern margin of the main Paleo-Baltic basin with an east-facing slope (corresponding to modern Estonia), siliciclastic material was delivered mostly from the northern and western parts of the basin, i.
The oldest Cambrian siliciclastic rocks in Estonia, assigned to the so-called pretrilobite Early Cambrian, correspond to the Platysolenites antiquissimus Zone (Mens et al.
The present study is based on the grain size of the siliciclastic component of sedimentary rock of the Pirgu (Katian) and Porkuni (Hirnantian) stages in the West Latvian Aizpute-41 core.
The aim of this paper is to study the effect of the composition and porosity on the thermal conductivity of the Cambrian siliciclastic rocks of the Baltic basin using the above-mentioned database.
The scarcity of the globally distinguishable taxa with the potential to define short time intervals is then a direct consequence of the event that is accompanied by depositional bias of the carbonate and siliciclastic sedimentation systems on Gotland (cf.
The roadcut that yielded the swollen pluricolumnal exposes interbedded argillaceous, fossiliferous carbonates and dark gray, siliciclastic mudstones with fossil fragments (Fig.
It is disconformably underlain by black silty, siliciclastic mudstones intercalated with limestone concretions and phosphate-bearing layers (Linkuanggou Formation), and disconformably overlain by phosphatic, argillaceous siliciclastic rocks intercalated with thin-bedded or lenticular limestones with trilobites of the genus Xystridura Whitehouse, 1936 (the lower part of the Kensay Formation).
This style of distal expression of ore at depth is documented for sedimentary rock-hosted deposits on the Carlin trend, where fracture zones in upper plate siliciclastic rocks return more than 50ppb Au and up to 0.
The siliciclastic Frojel Formation, which is only found in the southwestern part of Gotland, has been shown to represent the topmost part of the Slite Group (Calner 1999).
2001, 2003; Cuney and Kyser 2009; Nash 2010), sediment-hosted U deposits in siliciclastic sedimentary basins, such as the U deposits in the Tim Mersoi basin in Niger (Forbes et al.