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clastic
The Zhongpu Group is distributed in the Shihuigou area and composed of medium-basic volcanic rocks and volcanic clastic rocks interspersed with cherts, limestones, slates, and metamorphic sandstones.
      
Triassic clastic sedimentary rocks contain Late Paleozoic mantle-derived materials, represented by the Emeishan Permian flood basalts.
      
Many achievements have been made in experimental studies of hydrocarbon migration in the clastic reservoir.
      
It is shown that clastic quartz in the Riphean basal complexes was mainly related to denudation of the Lower Proterozoic platformal cover, whose rocks occur as fragments in the Riphean conglomerates.
      
It was established that the polygenic microscopic gold can be divided into at least clastic, authigenic, and clastic-authigenic types.
      
The microscopic gold, mainly of clastic type, was detected here in 82% of samples.
      
They reveal a general upsection coarsening of clastic material and incorporate six to ten layers.
      
Beds of coarse-clastic rocks with diamond occurrences are most widespread.
      
Velocity fluctuations and nonelastic collisions of fragments or their aggregates lead to the liquefaction of the clastic mass-flow, providing its travel over a long distance and simultaneously producing its sorting and stratification.
      
The so-called "armored mud balls," which represent a firm mechanical combination of clayey and sandy-clastic rocks, are found in ephemeral stream channels of arid low-mountain areas.
      
Ore-Clastic Olistostromes, Ore Clasts, and Allochthonous Antimony-Mercury Deposits in the Alay Range, Southern Tien Shan
      
A significant portion of clastic material in the sedimentation basin is also related to shore and bottom abrasion.
      
Clastic Rocks from Permian and Triassic Cherty Sequences in Sikhote Alin and Japan
      
Specific structural-textural and mineralogical-petrographic features of clastic rocks, which make up sparse thin layers within Permian and Triassic cherty sequences in Sikhote Alin and Japan, are discussed.
      
Lower Devonian Redeposited Serpentinite-Clastic Weathering Crust, Southern Urals
      
Clastic material of the breccia-conglomerates was mainly derived from carbonate weathering crusts of serpentinized ultramafic rocks.
      
The postsedimentary modification of Cretaceous rocks deposited in forearc trough beyond the tectonically active accretionary prism is characterized by a low degree of clastic component alteration.
      
The method is universal and can be applied to most types of clastic, pelitic, and carbonate sedimentary rocks based on a limited set of minerals and their simplified compositions.
      
The third association characterizes the epoch of minimal supply of the basin with volcanic and terrigenous clastic materials and the dominant accumulation of almost pure planktonogenic sediments.
      
The fourth association marks the change of marginal-marine conditions for pelagic ones and is expressed in a significant input of pyroclastic and clastic materials and the formation of distal flysch deposits.
      
 

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