Answer:
Both deltas and alluvial fans are types of depositary land forms created by rushing rivers.
Explanation:
Both deltas and alluvial fans are types of depositary land forms created by rushing rivers. Alluvial fans are created at the foothills, where streams running from a higher elevation break into low gradient foothills, while deltas are formed at the mouth of streams, where they enter seas or saline water bodies.
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Answer:
Basaltic magma -- SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na
Andesitic magma -- SiO2 55-65 wt%, intermediate. in Fe, Mg, Ca, Na, K
Rhyolitic magma -- SiO2 65-75%, low in Fe, Mg, Ca, high in K, Na
Explanation:
