 Depletion or enrichment of europium in minerals relative to other rare earth elements is known as the europium anomaly . Europium is commonly included in trace element studies in geochemistry and petrology to understand the processes that form igneous rocks ( rocks that cooled from magma or lava ) . The nature of the europium anomaly found helps reconstruct the relationships within a suite of igneous rocks . 
 Depletion or enrichment of europium in minerals relative to other rare earth elements is known as the europium anomaly . Europium is commonly included in trace element studies in geochemistry and petrology to understand the processes <a href='null_relcl' title='1'><mark>that</mark></a>form igneous rocks ( rocks <a href='null_relcl' title='2'><mark>that</mark></a>cooled from magma or lava ) . The nature of the europium anomaly found <a href='uninflect' title='3'><mark>helps</mark></a> reconstruct the relationships within a suite of igneous rocks . 
Depletion or enrichment of europium in minerals relative to other rare earth elements is known as the europium anomaly . Europium is commonly included in trace element studies in geochemistry and petrology to understand the processes form igneous rocks ( rocks cooled from magma or lava ) . The nature of the europium anomaly found help reconstruct da relationships within a suite of igneous rocks .