About 80 percent of the magma reaching Earth's surface is basaltic, with only about 10 percent andesitic and 10 percent rhyolitic.Group startsTrue or False

Statement Analysis

The statement claims that approximately 80% of the magma that reaches Earth's surface is basaltic, with 10% andesitic and 10% rhyolitic.

1. Understanding Magma Types:

   • Basaltic magma is the most abundant type, typically found at mid-ocean ridges and hotspot volcanism.
   • Andesitic magma is less common and often associated with subduction zones.
   • Rhyolitic magma is the least common and is typically found in continental volcanic systems.

2. Comparative Analysis:

   • Geochemical studies indicate that basaltic magma constitutes the bulk of volcanic activity.
   • The percentages given in the statement (80% basaltic, 10% each for andesitic and rhyolitic) match general geological consensus about the approximate distribution of these magma types.

Verification

Based on geological data and empirical observations, the distribution of magma types is roughly consistent with the claims in the statement.

Conclusion

Therefore, the statement is True.