GEOLOGY
GCE A LEVEL
WJEC Eduqas GCE A LEVEL in
GEOLOGY SP5 Production of full rock description of macro and micro features from hand specimens and unfamiliar field exposures of sedimentary rocks in order to interpret component composition, colour and textures, to identify rock types and to deduce their environment of deposition
Title: SP5 Production of full rock description of macro and micro features from hand specimens and unfamiliar field exposures of sedimentary rocks in order to interpret component composition, colour and textures, to identify rock types and to deduce their environment of deposition Specification reference: F2.1e Aim: To produce a full rock description of macro and micro features from hand specimens and unfamiliar field exposures of sedimentary rocks in order to interpret component composition, colour and textures, to identify rock types and to deduce their environment of deposition. Apparatus: Hand lens or light microscope Ruler A sediment comparator A range of sedimentary rocks Method: 1. Select a hand specimen of a sedimentary rock (or an unfamiliar field exposure of sedimentary rock). 2. Describe the texture of the rock: • clastic/fragmental/granular • grain size (s) • grain shape • the degree of sorting of the grains. 3. Describe features of the composition of the rock: • colour(s) • identify the minerals within the rock • identify the composition of the cement. 4. Observe and record any macro features in the sedimentary rock specimen such as sedimentary structures or fossil content. Analysis: 1. Identify the name of the rock using the textural characteristics and compositional information recorded. 2. Refer to appropriate sources of information e.g. A level notes and internet sources, to determine the environment of formation of the rock using the evidence gathered. Teacher/Technician notes: Practical techniques which may be assessed: H. Produce full rock descriptions of macro and micro features from conserved hand samples and unfamiliar field exposures. J. Use appropriate apparatus to record a range of quantitative measurements (to include mass, time, volume, temperature and length).
Specimens should be selected to cover the list of sedimentary rocks, features and environments stated in section F2.1d, e and f of the specification. Sediments may be a useful resource (e.g. a range of sands from beach, river, glacial and desert environments). N.B. A sediment comparator is a useful tool in describing sedimentary rock texture. However it is not permitted equipment in the examinations and learners should be made aware of this.
WJEC Eduqas GCE A LEVEL in
GEOLOGY SP5 Production of full rock description of macro and micro features from hand specimens and unfamiliar field exposures of sedimentary rocks in order to interpret component composition, colour and textures, to identify rock types and to deduce their environment of deposition
Title: SP5 Production of full rock description of macro and micro features from hand specimens and unfamiliar field exposures of sedimentary rocks in order to interpret component composition, colour and textures, to identify rock types and to deduce their environment of deposition Specification reference: F2.1e Aim: To produce a full rock description of macro and micro features from hand specimens and unfamiliar field exposures of sedimentary rocks in order to interpret component composition, colour and textures, to identify rock types and to deduce their environment of deposition. Apparatus: Hand lens or light microscope Ruler A sediment comparator A range of sedimentary rocks Method: 1. Select a hand specimen of a sedimentary rock (or an unfamiliar field exposure of sedimentary rock). 2. Describe the texture of the rock: • clastic/fragmental/granular • grain size (s) • grain shape • the degree of sorting of the grains. 3. Describe features of the composition of the rock: • colour(s) • identify the minerals within the rock • identify the composition of the cement. 4. Observe and record any macro features in the sedimentary rock specimen such as sedimentary structures or fossil content. Analysis: 1. Identify the name of the rock using the textural characteristics and compositional information recorded. 2. Refer to appropriate sources of information e.g. A level notes and internet sources, to determine the environment of formation of the rock using the evidence gathered. Teacher/Technician notes: Practical techniques which may be assessed: H. Produce full rock descriptions of macro and micro features from conserved hand samples and unfamiliar field exposures. J. Use appropriate apparatus to record a range of quantitative measurements (to include mass, time, volume, temperature and length).
Specimens should be selected to cover the list of sedimentary rocks, features and environments stated in section F2.1d, e and f of the specification. Sediments may be a useful resource (e.g. a range of sands from beach, river, glacial and desert environments). N.B. A sediment comparator is a useful tool in describing sedimentary rock texture. However it is not permitted equipment in the examinations and learners should be made aware of this.
