VOLCANIC ROCK CLASSIFICATION SCHEME by dfgh4bnmu

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									                VOLCANIC ROCK CLASSIFICATION SCHEME

      HIERARCHICAL LEVEL
       5                      6                     7                                 8                                                   9

                                                                   1.    alkali-feldspar-rhyolite (QAPF)
                                                                   2.         rhyolite (QAPF, TAS)
                                                                   3.
                                                                                   rhyodacite
                                         1.    rhyodacitic-        4.          dacite (QAPF, TAS)
                                                  rock
                                                                   1.
                                                                         quartz-alkali-feldspar-trachyte (QAPF)
                        1.
                                                                   2.    alkali-feldspar-trachyte (QAPF)
                             felsite                               3.
                                         2.                              foid-bearing-alkali-feldspar-trachyte (QAPF)
                                              trachytic-rock
                                                                   4.                                                   1.           comenditic trachyte
                                                                             quartz-trachyte (QAPF)
                                                                   5.                                                   2.          pantelleritic trachyte
                                                                              trachyte (QAPF, TAS)
                                                                   6.                                                   1.           benmoreite (TAS)
                                                                               trachydacite (TAS)
                                                                   7.         trachyandesite (TAS)                      2.              latite (TAS)
                                                                                                                        1.            mugearite (TAS)
                                                                   8.
                                                                          basaltic-trachyandesite (TAS)
                                                                                                                        2.           shoshonite (TAS)
                                                                   9.                                                   1.
                                                                               trachybasalt (TAS)                                      hawaiite (TAS)
                                                                                                                        2.       potassic-trachybasalt (TAS)
                                                                  10.
                                                                          foid-bearing-trachyte (QAPF)

                                                                  11.         quartz-latite (QAPF)
                                                                  12.             latite (QAPF)
      1.                                                          13.       foid-bearing-latite (QAPF)
        volcanic-
       crystalline-                                                1.
          rock                           3.                                  andesite (QAPF, TAS)                       1.
                                              andesitic-rock                                                                              boninite
                                                                   2.        basaltic andesite (TAS)


                                         1.                        1.
                                               basaltic-rock                   basalt (QAPF, TAS)


                                                                   1.        phonolite (QAPF, TAS)
                                         2.
                                              phonolitic-rock      2.
                        2.                                               tephritic-phonolite (QAPF, TAS)

                             mafite
                                                                   1.      phonolitic-basanite (QAPF)
                                                                   2.    phonolitic-tephrite (QAPF, TAS)
                                         3.
                                              tephritic-rock       3.        basanite (QAPF, TAS)
                                                                                                                        1.               basanitoid
                                                                   4.
                                                                              tephrite (QAPF, TAS)



                                                                   1.       phonolitic-foidite (QAPF)
                                                                   2.       basanitic-foidite (QAPF)
                                         4.
                                               foiditic-rock
                                                                   3.        tephritic-foidite (QAPF)
                                                                   4.         foidite (QAPF, TAS)


                        3.                                          1.               picrite
                                         1.    picritic-rock
                         ultramafitite                              2.              komatiite
                                                                    3.             meimechite

                                         2.   picrobasalt (TAS)
       2.
       volcaniclastic
           - rock

                                                                                                LEGEND
                                                                                                                             classified samples in database

                                                                                                                             upper-level classified sample
CLASSIFICATION SOURCE:
                                                                                                                             no classified samples in database
 Gillespie, M.R., Styles , M.T., 1999
 BGS Rock Classification Scheme
 Volume 1. Classification of igneous rocks.
 British Geological Survey Research Report, (2nd edition)
 RR 99-06
 http://www.bgs.ac.uk/bgsrcs/docs/Igneous.pdf

								
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