Rock Test 1 Write down details on each rock as seen under PPL and XPL on the worksheets provided for you ; then identify the rock type (igneous/ sedimentary/metamorphic) and name the rock. under PPL and XP grain type (crystalline or fragmental) grain size (coarse, medium, fine) grain shape (rounded, angular, variable) grain relationships (grains/crystals of similar size; large crystals in fine matrix; grains/crystals randomly distributed; crystals lined up in one direction) minerals present (identified by . . . & . . . % in rock) other features (fossils present, muddy matrix, glass) colour under PPL (mainly light or dark) colour under XPL (mainly grey/black or brightly coloured)
Rock Test 1 Write down details on each rock as seen under PPL and XPL on the worksheets provided for you ; then identify the rock type (igneous/ sedimentary/metamorphic)
Mar 28, 2015
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Rock Test 1Write down details on each rock as seen under PPL and XPL on the worksheets provided for you ; then identify the rock type (igneous/ sedimentary/metamorphic) and name the rock.
under PPL and XP grain type (crystalline or fragmental) grain size (coarse, medium, fine) grain shape (rounded, angular, variable) grain relationships (grains/crystals of similar size; large crystals in fine matrix; grains/crystals randomly distributed; crystals lined up in one direction) minerals present (identified by . . . & . . . % in rock) other features (fossils present, muddy matrix, glass) colour under PPL (mainly light or dark) colour under XPL (mainly grey/black or brightly coloured)
The ROCKS to choose from :(not given in this order)
• granite• diorite• gabbro• dolerite• basalt• shelly limestone• sandstone• arkose• greywacke• marble• schist
PPL XPL
Rock 1
PPL XPL
Rock 2
PPL XPL
Rock 3
PPL XPL
Rock 4
PPL XPL
Rock 5
PPL XPL
Rock 6has been rotated 40o in XPL view
PPL XPL
Rock 7
PPL XPL
Rock 8
PPL XPL
Rock 9
PPL XPL
Rock 10
PPL XPL
Rock 11
Related Documents
