Knowledge Geological Comments and techniques and understanding skills Identify the Candidates should Igneous bodies can be distinguished by: characteristics of igneous have the opportunity to structure bodies [crystal size, make annotated [columnar structures, field sketches of these jointing, pillow relationships] as seen in features from lava] hand specimen/rock photographs or field form [lava exposures, diagrams and outcrops. flows, sills, photographs. Analyse dykes and simplified geological Candidates should be plutons] maps and cross-sections able to distinguish field relationships. to interpret their between baked and contrasting modes of chilled margins, formation. metamorphic aureoles and discordant and concordant relationships with the country rocks. Candidates should be able to distinguish between lava flows and sills on the basis of field evidence; baked margins, vesicles, xenoliths, crystal size, weathered upper surfaces.
Knowledge and understanding Geological techniques and skills Comments Igneous bodies can be distinguished by: structure [columnar jointing, pillow lava] form [lava flows, sills, dykes and plutons] field relationships. Identify the characteristics of igneous bodies [crystal size, structures, field relationships] as seen in hand specimen/rock exposures, diagrams and photographs. Analyse simplified geological maps and cross-sections to interpret their contrasting modes of formation. Candidates should have the opportunity to make annotated sketches of these features from photographs or field outcrops. Candidates should be able to distinguish between baked and chilled margins, metamorphic aureoles and discordant and concordant relationships with the country rocks. Candidates should be able to distinguish between lava flows and sills on the basis of field evidence; baked margins, vesicles, xenoliths, crystal size, weathered upper surfaces.
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