Near-shore marine sediments deposited during the Paleocene–Eocene Thermal Maximum
at Wilson Lake, NJ, contain abundant conventional and giant magnetofossils. We find that
giant, needle-shaped magnetofossils from Wilson Lake produce distinct magnetic signatures
in low-noise, high-resolution first-order reversal curve (FORC) measurements. These
magnetic measurements on bulk sediment samples identify the presence of giant, needle-
shaped magnetofossils. Our results are supported by micromagnetic simulations of giant …

Near shore marine sediments deposited during the Paleocene-Eocene Thermal Maximum
at Wilson Lake, New Jersey contain abundant conventional and giant magnetofossils. Giant
magnetofossils are the preserved remains of iron-biomineralizing organisms that so far have
been identified only in sediments that were deposited during Eocene hyperthermal events.
Before now, the identification of giant magnetofossils required a combination of expensive
and destructive techniques. We find that giant, needle-shaped magnetofossils from Wilson …