Opening the text

Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meaningsLoomis, Frederic Brewster

Science

Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meanings

Name: Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meanings
Author: Loomis, Frederic Brewster

Loomis, Frederic Brewster

Minerals -- United States; Rocks -- United States

Uranium, U                             238
              Vanadium, V                             51
              Xenon, Xe                              131
              Ytterbium, Yt                          173
              Yttrium, Y                              89
              Zinc, Zn                                65
              Zirconium, Zr                           91


                         Table of Geologic Time

            _Eras_
        _Periods and their              _Important Physical      _Important
       Duration in Millions                   Events_         Organic Events_
            of Years_

  Cenozoic
      Quaternary
          Recent                        Youthful land forms  Dominance of man.
                                        having high relief
                                        formed.
          Pleistocene Epoch      2 M.Y. Period of            Heidelberg,
                                        glaciation; four     Neanderthal, and
                                        great ice advances.  Crô-Magnon man;
                                                             extinction of
                                                             large mammals.
      Tertiary
          Pliocene Epoch        10 M.Y. Continuing           Intermigration of
                                        world-wide land      North and South
                                        elevation.           American mammals.
                                                             Transformation of
                                                             ape to man.
          Miocene Epoch         18 M.Y. Cordilleras, Alps,   Culmination of
                                        Himalayas formed.    modern types of
                                        Widespread           mammals. Apes
                                        vulcanism-basalt     appear in Old
                                        flows in             World.
                                        northwestern United
                                        States.
          Oligocene Epoch       10 M.Y. Land dominant; seas  Carnivores and
                                        marginal.            ungulates develop
                                                             into importance.
          Eocene Epoch          20 M.Y. Extensive            Dawn of the
                                        sedimentation; seas  dominance of
                                        marginal.            mammals. Reptiles
                                                             subordinate.
  Cretaceous                    65 M.Y. Widespread           Climax and
                                        epicontinental       culmination of
                                        seas. Laramide       reptiles,
                                        revolution at close  especially

Public-domain text, read in full here on John Shaqi.

Opening the text

Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meaningsLoomis, Frederic Brewster

Science

Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meanings

Loomis, Frederic Brewster

Minerals -- United States; Rocks -- United States

Uranium, U                             238
              Vanadium, V                             51
              Xenon, Xe                              131
              Ytterbium, Yt                          173
              Yttrium, Y                              89
              Zinc, Zn                                65
              Zirconium, Zr                           91


                         Table of Geologic Time

            _Eras_
        _Periods and their              _Important Physical      _Important
       Duration in Millions                   Events_         Organic Events_
            of Years_

  Cenozoic
      Quaternary
          Recent                        Youthful land forms  Dominance of man.
                                        having high relief
                                        formed.
          Pleistocene Epoch      2 M.Y. Period of            Heidelberg,
                                        glaciation; four     Neanderthal, and
                                        great ice advances.  Crô-Magnon man;
                                                             extinction of
                                                             large mammals.
      Tertiary
          Pliocene Epoch        10 M.Y. Continuing           Intermigration of
                                        world-wide land      North and South
                                        elevation.           American mammals.
                                                             Transformation of
                                                             ape to man.
          Miocene Epoch         18 M.Y. Cordilleras, Alps,   Culmination of
                                        Himalayas formed.    modern types of
                                        Widespread           mammals. Apes
                                        vulcanism-basalt     appear in Old
                                        flows in             World.
                                        northwestern United
                                        States.
          Oligocene Epoch       10 M.Y. Land dominant; seas  Carnivores and
                                        marginal.            ungulates develop
                                                             into importance.
          Eocene Epoch          20 M.Y. Extensive            Dawn of the
                                        sedimentation; seas  dominance of
                                        marginal.            mammals. Reptiles
                                                             subordinate.
  Cretaceous                    65 M.Y. Widespread           Climax and
                                        epicontinental       culmination of
                                        seas. Laramide       reptiles,
                                        revolution at close  especially

Public-domain text, read in full here on John Shaqi.

Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meanings

Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meanings

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