clast


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clast

[klast]
(geology)
An individual grain, fragment, or constituent of detrital sediment or sedimentary rock produced by physical breakdown of a larger mass.
References in periodicals archive ?
Formation of the Tuscan Nappe unit: LIM: "Calcare Secifero di Limano" formation; RSA: "Rosso Ammonitico" formation; MAS: "Calcare Massiccio" formation; RET: "Raethavicola Contorta" formation, Late Triassic dolomitic-limestones; ctc: cataclastic formation made by a polygenic breccias of mainly metamorphic limestone clasts. Tuscan metamorphic units: PSM: "Pseudomacigno" formation; MCP: "Cipollini" formation.
Similarly, pores are found predominantly in between the interfaces of OM and clasts (cf.
Graded beds typically contain fine sand-sized clasts that pass upward into coarse and fine silt, and in some instances, to subordinate aluminous pelite.
and pebbly Sub-rounded to rounded extrabasinal clasts sandstone (quartzite and vein quartz, minor rock fragments).
Recently, it has been suggested that the addition of fresh basalt clasts may have added important mineral nutrients to old, leached volcanic soils as well (Hunt & Lipo 2011: 46-8, 191-6; Ladefoged et al.
The only occurrence of carbonate rocks is as fossiliferous clasts in breccias near the base of this formation.
At the middle school and high school levels, CLAST will focus on providing the latest sophisticated technology to improve STEM education.
The 5 cm wide fracture is filled with unbedded silty sandstone containing abundant small angular clayey-silty clasts. The fracture filling is relatively strongly cemented compared to the surrounding sandstone in the quarry wall.
Rate GPA Business 117 ACG2022 96 82% 3.17 Enrolled 184 88% Non-Business 126 APA2651 78 62% 2.18 Enrolled 78 62% Spring Semester 1997 Average Average Students Students Math Semesters Repeated Took Major Level Taken Course Course CLAST Business 3 3rd 8 8 Enrolled Non-Business 2 6th 22 64 Enrolled Sources: Grade Reports, Unofficial Transcripts and Grade Change Reports
Tests such as the College Level Academic Skills Test (CLAST) have not been found to be better indicators of success than prior academic performance.