trachyte การใช้

• Volcanic trachyte plugs and have allowed the formation of shallow beaches.
• This mountain is a volcanic cone consisting of trachyte and phonolite.
• These two phases are described as trachyte-basaltic to basaltic.
• Syni erupted basaltic lavas and Aku, Chepe and Dolinny trachyte.
• Main rocks of the peak are trachyte, rhyolite and basalt.
• Mount Beerwah ( 556m ) is composed of alkali trachyte.
• Mount Beerburrum ( 278m ) is composed of porphyritic trachyte.
• Lava flows of more viscous phonotephrite and trachyte erupted after the basanite.
• Trachyte is a volcanic rock which typically has graphic texture.
• The mountain is a volcanic feature known as a trachyte porphyritic texture.
• These consist of alkali-feldspar porphyritic quartz-trachyte and trachyte.
• These consist of alkali-feldspar porphyritic quartz-trachyte and trachyte.
• Later activity produced trachyte and phonolite plugs and lava flows.
• Volcanic equivalents would be dacite, trachyte and trachydacite.
• Rock types include trachyandesite, trachyte, syenite and amphibole-biotite granite.
• These include nephelinite, basanite and peralkaline phonolite, trachyte and comendite lavas.
• Pumice and trachyte eruptions at Puu Waawaa may be a sign of this change.
• It occurs in sills as well as in the volcanic rocks andesite and trachyte.
• The mountain is basically a column of trachyte.
• On the village s outskirts is an old quarry where trachyte was once mined.