GP42A:
Assigning Chronology to Geologic Processes Using Magnetic Methods I

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Session ID#: 34942

Session Description:
Magnetic methods are important for assigning both absolute and relative time to geological sequences. Magnetostratigraphy and correlation to the Geological Polarity Time Scale (GPTS) constitute a standard dating tool in the Earth sciences, applicable to a wide variety of sedimentary (but also volcanic) rock types formed in different environments (continental, lacustrine, marine). Relative paleointensity variations observed in younger marine or continental sequences can be used to correlate and assign time at high-resolution. In addition, astronomically-forced climate cycles encoded magnetically have enabled high-resolution time calibration of sedimentary sequences from the Neogene to the Precambrian. This session invites contributions that use magnetic methods to improve the GPTS, better date the geological record, help understand paleoclimatic and paleoenvironmental changes, and resolve sedimentation dynamics in tectonically active basins. We would especially welcome studies that integrate magnetostratigraphy with isotopic dating, bio-, cyclo- and chemostratigraphic records.
Primary Convener:  Kenneth P Kodama, Lehigh University, Department of Earth and Environmental Sciences, Bethlehem, PA, United States
Convener:  Luigi Jovane, University of Sao Paulo, Oceanographic Institute, Sao Paulo, Brazil
Chairs:  Kenneth P Kodama, Lehigh University, Department of Earth and Environmental Sciences, Bethlehem, PA, United States, Luigi Jovane, Universidade de São Paulo, Instituto Oceanográfico, São Paulo, Brazil and Fabio Florindo, INGV National Institute of Geophysics and Volcanology, Rome, Italy
OSPA Liaison:  Kenneth P Kodama, Lehigh University, Department of Earth and Environmental Sciences, Bethlehem, PA, United States
Index Terms:

1520 Magnetostratigraphy [GEOMAGNETISM AND PALEOMAGNETISM]
1527 Paleomagnetism applied to geologic processes [GEOMAGNETISM AND PALEOMAGNETISM]
1535 Reversals: process, timescale, magnetostratigraphy [GEOMAGNETISM AND PALEOMAGNETISM]

Abstracts Submitted to this Session:

Towards a High-resolution Time Scale for the Early Devonian (Invited) (207094)
Mark J Dekkers, Utrecht University, Utrecht, Netherlands and Anne-Christine da Silva, University of Liege, Geologie, Liege, Belgium
A Two Million Year Equatorial Paleogeomagnetic and Relative Paleointensity Record from IODP Site U1489 in the West Pacific Warm Pool: Towards an Improved Tuning Target. (245950)
Robert G Hatfield, Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, United States, Joseph Stephen Stoner, Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, OR, United States, Yuho Kumagai, Tohoku University, Sendai, Japan and Expedition 363 Scientists
Toward establishing a definitive Late-Mid Jurassic (M-series) Geomagnetic Polarity Reversal Time Scale through unraveling the nature of Jurassic Quiet Zone. (284077)
Masako Tominaga, Texas A&M University College Station, College Station, TX, United States, Maurice Tivey, National Science Foundation, Arlington, VA, United States and William W Sager, University of Houston, Earth and Atmospheric Sciences, Houston, TX, United States
Rock magnetic record of the Karoo-Ferrar effect on sediments: Timing and duration of the environmental change (Monte Serrone section, Northern Apennines, Italy) (Invited) (220192)
Sara Satolli, University of Chieti-Pescara, Department of Engineering and Geology, Pescara, Italy, Giovanni Muttoni, University of Milan, Department of Earth Sciences 'Ardito Desio', Milan, Italy, Andrea Di Cencio, Studio Tecnico Geologia e Paleontologia, Firenze, Italy and Luca Lanci, University of Urbino, Urbino, Italy
Identifying the Jaramillo Subchron in cave sediments using ESR (284284)
Josep M Pares1, Davinia Moreno1 and Mathieu Duval2, (1)CENIEH, Burgos, Spain, (2)Griffith University, Nathan, Australia
Incremental fold tests of remagnetized carbonate rocks (212792)
Rob Van Der Voo, University of Michigan Ann Arbor, Ann Arbor, MI, United States and Ben van der Pluijm, University of Michigan, Ann Arbor, MI, United States

See more of: Geomagnetism, Paleomagnetism and Electromagnetism