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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Antarctica
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Antarctic ice sheet
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East Antarctic ice sheet (1)
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Transantarctic Mountains (1)
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International Ocean Discovery Program (1)
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Mediterranean Sea
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West Mediterranean
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Tyrrhenian Sea (1)
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Pacific Ocean
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South Pacific (1)
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Southern Ocean
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Ross Sea (1)
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elements, isotopes
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isotope ratios (1)
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isotopes
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stable isotopes
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O-18/O-16 (1)
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oxygen
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O-18/O-16 (1)
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geochronology methods
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paleomagnetism (2)
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geologic age
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Cenozoic
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Holocene (1)
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Tertiary
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Neogene
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Primary terms
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Antarctica
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Antarctic ice sheet
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East Antarctic ice sheet (1)
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Transantarctic Mountains (1)
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Cenozoic
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Holocene (1)
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Tertiary
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Neogene
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Deep Sea Drilling Project
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Leg 28
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DSDP Site 270 (1)
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glacial geology (1)
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Integrated Ocean Drilling Program
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Expedition 318
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IODP Site U1356 (1)
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isotopes
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stable isotopes
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O-18/O-16 (1)
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Mediterranean Sea
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West Mediterranean
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Tyrrhenian Sea (1)
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Ocean Drilling Program
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Leg 188
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ODP Site 1165 (1)
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oxygen
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O-18/O-16 (1)
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Pacific Ocean
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paleomagnetism (2)
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sediments
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Southern Ocean
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sediments
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sediments
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East Antarctic Ice Sheet variability during the middle Miocene Climate Transition captured in drill cores from the Friis Hills, Transantarctic Mountains
A 4500 year record of palaeomagnetic secular variation and relative palaeointensity from the Tyrrhenian Sea
Abstract A marine sediment core from the western Mediterranean provides a new high-resolution 4500 year record of palaeomagnetic secular variation and relative palaeointensity. In 2013, the 7.1 m C5 core was recovered from the Tyrrhenian Sea as part of the NextData climate data project. The coring site, 15 km offshore from the Volturno river mouth, is well located to record combined marine and terrestrial palaeoclimatic influences, and the fine-grained, rapidly deposited sediments are effective palaeomagnetic recorders. We investigate the palaeomagnetic field direction and strength recorded in the core, which provide a valuable high-resolution record of Holocene geomagnetic variation in the area. Using rock magnetic techniques, we constrain the magnetic mineralogy of the studied sediments and confirm their suitability for palaeomagnetic analysis. Palaeomagnetic declination and inclination records were determined by stepwise alternating-field demagnetization, and relative palaeointensity estimates were obtained based on normalization to anhysterestic and isothermal remanent magnetization and to magnetic susceptibility. The age of the core is well constrained with a tephra and biostratigraphic age model, and its magnetic records are compared with relevant core and model data for the region, demonstrating that our record is compatible with previous results from the area. An automated curve matching approach is applied to assess the compatibility of our data with the existing secular variation path for the Mediterranean area.