The Paleomagnetism equipment is composed of: i) a Cryogenic magnetometer (SQUID) (755 SRM, 2G Enterprises), equipped with a three-coil system with the capacity to apply a field of up to 170 m Tesla; ii) a thermal Demagnetizer model ASC TD48-SC (ASC Scientific), with a capacity to heat 48 one-inch diameter or one -inch cubic geological samples in a single batch; iii) a MicroMag 3900 vibrating magnetometer (VSM – Lake Shore Cryotronics, Inc.) with cryostat and furnace; a Kappabridge MFK1-FA susceptometer (AGICO), full equipped with special Up/Down mechanism and rotator for spinning specimen method of AMS measurements; and Bartington MS2 susceptometer, with a variety of sensors together with a field portable mesauring instrument; iv) two impulse magnetizer, a 2G Model 670 IRM with the capacity to create magnetic fields of up to 2 Teslas and a ASC Model IM-10-30 with the capacity to create magnetic fields up to 5 T, both enabling the application of isothermal remanent magnetization (IRM) for the characterization of the ferromagnetic phases; v) a JR-6A (AGICO) dual spinner magnetometer, for rapid and accurate measurement of remanent magnetization, fully controlled by a PC notebook or desktop; vi) a LDA5 AF/PAM1 (AGICO), an alternating field demagnetizer with a field amplitude up to 200mT, computer-controlled and fully automated, with the extension of PAM1 which serves for applying a deliberate anhysteretic or isothermal magnetization; and vii) a Helmholtz Coil 3D coil system (ASC), which provide a known and uniform magnetic field between the coils. They are calibrated in such a way that the magnetic field inside them is neutral so that the samples are not affected by the current magnetic field. They are used as a "waiting" area for the samples, before being analyzed.

data interpretation

sediment samples