TAILIEUCHUNG - A Holocene paleomagnetic record from Küçükçekmece Lagoon, NW Turkey

Lake sediments are very useful for providing high-resolution records of geomagnetic field variations, especially for the Holocene period. We present high-resolution paleomagnetic records from three cores (KCL12P1, P2, and P3) recovered from Küçükçekmece Lagoon, located at the northern shoreline of the Sea of Marmara, Turkey. The cores were subjected to a comprehensive paleomagnetic and rock magnetic investigation using oriented samples. According to the age-depth model, based on radiocarbon dating and X-ray fluorescence-derived Ca/Ti element ratios, tuned to available oxygen isotope records based on an absolute calendaryear time-scale, we obtained a new paleomagnetic record for the last 3800 years. | Turkish Journal of Earth Sciences Turkish J Earth http earth 2021 45 639-652 TÜBİTAK Research Article doi yer-2102-13 A Holocene paleomagnetic record from Küçükçekmece Lagoon NW Turkey Özlem MAKAROĞLU İstanbul University-Cerrahpaşa Engineering Faculty Geophysics Department İstanbul Turkey Received Accepted Published Online Final Version Abstract Lake sediments are very useful for providing high-resolution records of geomagnetic field variations especially for the Holocene period. We present high-resolution paleomagnetic records from three cores KCL12P1 P2 and P3 recovered from Küçükçekmece Lagoon located at the northern shoreline of the Sea of Marmara Turkey. The cores were subjected to a comprehensive paleomagnetic and rock magnetic investigation using oriented samples. According to the age-depth model based on radiocarbon dating and X-ray fluorescence-derived Ca Ti element ratios tuned to available oxygen isotope records based on an absolute calendar- year time-scale we obtained a new paleomagnetic record for the last 3800 years. Low paleointensities were found during 1500 2000 BP. Stacked paleomagnetic directions from Küçükçekmece Lagoon were correlated to regional geomagnetic field models. This correlation proved that the paleomagnetic records paleointensity inclination obtained from the Küçükçekmece Lagoon sediments considerably agree with the data from the surrounding region over the past 3800 years. Key words Paleomagnetism paleosecular variation Holocene Küçükçekmece Lagoon İstanbul NW Turkey 1. Introduction paleomagnetic records of the lake are not of high quality The investigation of paleomagnetic records from lake due to low NRM intensities. The work of Drab et al. 2015 sediments continuously deposited over geological times showed that the magnetic records obtained from the is essential to understand the dynamic of the Earth Marmara Sea located in NW Turkey are affected by magnetic field .

• Môi trường
• Journal of Earth Sciences
• Paleosecular variation
• High resolution paleomagnetic records
• X ray fluorescence derived
• Holocene paleomagnetic records
• Vietnam Journal of Earth Sciences
• General characteristics of rare earth
• Radioactive elements in Dong Pao deposit
• The natural tap and thermal waters
• Liquid scintillation counter
• Dodecahedron trapezohedron crystal habits
• Garnet bearing xenoliths
• Greenish reddish dark brown colour
• Gemmological characteristics
• Light rare earth elements
• metamorphism
• earth sciences
• Research
• VNU Journal of Science
• scientific research
• scientific reports
• HydrodynamicEnvironmental
• Bathymetry Mapping
• Estimation
• DETERMINING FLOW
• ASTER Data
• HANOI BUS
• Characteristics
• GEOLOGICAL MAP
• evapotranspiration
• biosolids application
• Environmental
• Assessment
• Photochemical
• remote sensing
• Building land
• Classification
• Landscape
• Thunderstorm forecast
• submerged
• Cu concentration
• urban expansion