Knowledge and Geological techniques Comments understanding and skills Surface materials are Recognition and use of The surface processes part transported by a range appropriate units in of the rock cycle facilitates, of erosional agents and calculations. (though not exclusively) are deposited as training in, and assessment sediments: Construction and of, some mathematical interpretation of frequency skills. erosion (abrasion, tables and diagrams, bar attrition) charts and histograms. For exemplification of transport (traction, mathematical skills see saltation, Finding of arithmetic means. Mathematical Guidance suspension, solution) for AS Geology. deposition selectively Understanding of the concentrates principles of sampling as products in particular applied to scientific data. environments grain – size related to Understanding of the energy of measures of dispersion, depositional including standard deviation environment; and interquartile range. dominance of quartz and muscovite in coarse fraction and clay minerals in fine fraction; flocculation; precipitation. d. Different sedimentary Description of sedimentary environments may be rocks in hand specimens, rock identified by diagnostic exposures and sedimentary structures, diagrams/photographs from rock textures, observation of their colour, mineralogy and fossil texture (use of sediment content. comparators to determine grain size, shape and sphericity), (coarse >2 mm, fine <1/16 mm), reaction with 0.5 mol dm−3 hydrochloric acid, mineralogy and other diagnostic features.
Knowledge and understanding Geological techniques and skills Comments Surface materials are transported by a range of erosional agents and are deposited as sediments: erosion (abrasion, attrition) transport (traction, saltation, suspension, solution) deposition selectively concentrates products in particular environments – grain size related to energy of depositional environment; dominance of quartz and muscovite in coarse fraction and clay minerals in fine fraction; flocculation; precipitation. Recognition and use of appropriate units in calculations. Construction and interpretation of frequency tables and diagrams, bar charts and histograms. Finding of arithmetic means. Understanding of the principles of sampling as applied to scientific data. Understanding of the measures of dispersion, including standard deviation and interquartile range. The surface processes part of the rock cycle facilitates, (though not exclusively) training in, and assessment of, some mathematical skills. For exemplification of mathematical skills see Mathematical Guidance for AS Geology. d. Different sedimentary environments may be identified by diagnostic sedimentary structures, rock textures, mineralogy and fossil content. Description of sedimentary rocks in hand specimens, rock exposures and diagrams/photographs from observation of their colour, texture (use of sediment comparators to determine grain size, shape and sphericity), (coarse >2 mm, fine <1/16 mm), reaction with 0.5 mol dm−3 hydrochloric acid, mineralogy and other diagnostic features.
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