The use of the Trace Element content of sedimentary Pyrite as a Proxy for the Trace Element composition of past oceans has recently emerged.
The Pyrite Proxy has several potential advantages over bulk sample analysis: preservation through metamorphism; little dilution during analysis (samples are ablated not dissolved, allowing for the less abundant elements commonly held in the sulfide fraction to be investigated as proxies); accurate measurement of several elements simultaneously; the ability.
The use of the Trace Element content of sedimentary Pyrite as a Proxy for the Trace Element composition of past oceans has recently emerged