EARTH SCIENCE LAB
Volcanic Materials Sample #6

Identify the Pyroclastic Material

Image of Volcanic Materials Sample #6
Click here for another view of the same sample.
Click here for a close up view of the sample - #1.
Click here for a close up view of the sample - #2.
Volcanic Materials Identification Worksheet
Texture #1 Texture #2 Composition Tephra Size Rock Name Lava Flow Material Pyroclastic Material
Aphanitic Aphanitic Felsic < 2 mm Rhyolite Pahoehoe Agglutinate
Porphyritic Porphyritic Intermediate 2 - 64 mm Andesite Aa Ash
Glassy Glassy Mafic > 64 mm Basalt Aa Clinker Block
Vesicular Vesicular Ultramafic NA   Block Bread-Crust Bomb
Pyroclastic Pyroclastic       NA Cow-Pie Bomb
            Fusiform Bomb
            Irregular Bomb
            Lapilli
            Pumice
            Reticulite
            Ribbon Bomb
            Scoria
            Spherical Bomb
            NA

                

Select a Sample to Identify:

1 •2 •3 •4 •5 •6 •7 •8 •9 •10 •11 •12 •13 •14 •15•

Return to Introduction