clastic rock

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Related to Clastic sediment: clast
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  • noun

Words related to clastic rock

(geology) a rock composed of broken pieces of older rocks

References in periodicals archive ?
Quartz, feldspars and rock fragments (lithic fragments) play an important role in the determination of provenance of clastic sediments.
This petrofacies developed during the most active rifting phase and characterizes a thick pile of clastic sediments (> 4000 m).
The accumulation rates of non-carbonate, inorganic clastic sediment, which may be a more accurate indicator than bulk sediments of watershed soil export, increased dramatically in these lakes following anthropogenic impact.
Until the early 1990s, little was known of the pre-Permian section but it was supposed that clastic sediments were better represented than they were in the younger section.
Inman and Chamberlin (1955) studied the particle size distribution in near-shore sediments and according to Sahu (1964) the presence of coarse grains of clastic sediments reflect the fluidity (viscosity) factor of the depositing medium and the energy factor of the environments of the site of deposition.
The influence of source rock type, chemical weathering and sorting on geochemistry of clastic sediments from the Quetico Meta-sedimentary Belt, Superior Province, Canada.
Red clastic sediments at the base of the lower Triassic indicated that an erosion period started after sedimentation in the mid-Permian and has been dominant on land in the region.
These formations consist of sandstone, shale and conglomerates of clastic sediments of molasse and placer type.
Nd isotopes can provide important information about the provenance of clastic sediments in marine environments [20].
Silver-gold-lead-zinc mineralization is hosted in a sequence of Permian marine clastic sediments and limestone which are overlain by a Jurassic terrestrial sedimentary sequence and underlain by Proterozoic metasedimentary rocks.
In: The three-dimensional facies architecture of terrigenous clastic sediments (and its implications for hydrocarbon discovery and recovery.
1983, Geochemistry of porosity enhancement and reduction in clastic sediments.
1986), sand grains and other clastic sediments associated with this contact are not evidence of intra-Silurian unconformity but rather of pre-Middle Devonian karst.