In situ magnetic identification of giant, needle-shaped magnetofossils in Paleocene–Eocene Thermal Maximum sediments

• Published in: Proceedings of the National Academy of Sciences - PNAS Vol. 118; no. 6; pp. 1 - 7
• Main Authors: Wagner, Courtney L., Egli, Ramon, Lascu, Ioan, Lippert, Peter C., Livi, Kenneth J. T., Sears, Helen B.
• Format: Journal Article
• Language: English
• Published: United States National Academy of Sciences 09.02.2021
• Subjects: Physical Sciences; magnetotactic bacteria; magnetofossils; micromagnetic modeling; biogenic needles; first-order reversal curves

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-ord...