Magnetics Information Consortium (MagIC) -- Home Page

This portal provides access to paleomagnetic data from a broad range of studies. Data range from individual measurements to specimen, sample or site level results, and include a wide variety of derived parameters or associated rock magnetic measurements. Existing data can be viewed and saved in several formats.

RMAG PORTAL
Rock Magnetic Database

Search for data collected during rock magnetic experiments on remanence, anisotropy, hysteresis and susceptibility.

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Perrin, M., Prevot, M. and Mankinen, E.A. (1991). Low intensity of the geomagnetic field in early Jurassic time. Journal of Geophysical Research 96: doi: 10.1029/91JB00871. issn: 0148-0227.

Kosterov, A.A., Prevot, M., Perrin, M. and Shashkanov, V.A. (1997). Paleointensity of the Earth's magnetic field in the Jurassic: New results from a Thellier study of the Lesotho Basalt, southern Africa. Journal of Geophysical Research, Solid Earth 102(B11): 24,859-24,872.

Briden, J.C. (1966). Variation of intensity of the palaeomagnetic field through geological time. Nature 212(5059): 246-247.

Thomas, D.N., Biggin, A.J. and Schmidt, P.W. (2000). A palaeomagnetic study of Jurassic intrusives from New South Wales: further evidence for a pre-Cenozoic dipole low. Geophysical Journal International 140: 621-635.

Bol'shakov, A.S., Solodovnikov, G.M. and Vinogradov, Y. (1987). Paleointensity of the geomagnetic field in the Early and Middle Jurassic. Izvestiya, Academy of Science, USSR: Physics of Solid Earth 23: 324-333.

Bol'shakov, A.S. and Solodovnikov, G.M. (1983). Geomagnetic field intensity in Armenia in the Late Jurassic and Early Cretaceous. Izvestiya, Academii Nauk, SSSR: Fizika Zemli 19: 976-982.

Morales, J., Goguitchaichvili, A., Alva-Valdivia, L.M. and Urrutia-Fucugauchi, J. (2003). Absolute paleointensity of the Earth's magneitc field during Jurassic: case study of La Negra Formation (northern Chile). Comptes Rendus Geoscience 335: 661-670. doi: 10.1016/S1631-0713(0300116-0.

Tarduno, J.A. and Cottrell, R.D. (2005). Dipole strength and variation of the time¿averaged reversing and nonreversing geodynamo based on Thellier analyses of single plagioclase crystals. Journal of Geophysical Research 110. doi: 10.1029/2005JB003970. issn: 0148-0227.

Bol'shakov, A.S. and Solodovnikov, G.M. (1980). Geomagnetic field strength in the Late Jurassic. Izvestiya, Academy of Science, USSR: Physics of Solid Earth 16: 848-857.

Brown, M.C., Singer, B.S., Knudsen, M.F., Jicha, B.R., Finnes, E. and Feinberg, J.M. (2009). No evidence for Brunhes age excursions, Santo Antao, Cape Verde. Earth and Planetary Science Letters 287: 100-115. doi: 10.1016/j.epsl.2009.07.039.

Expedition MV1203 aims to dredge 40 seamounts along the southwest portion of the Walvis Ridge seamount trail. The Walvis Ridge begins on the African continent and extends to near the mid-Atlantic Ridge. The southwest half of the Walvis Ridge appears to bifurcate into two distinct physical and geochemical trends, the Tristan (northern) and Gough (southern) tracks. The data we collect will assist in improving absolute plate motion models for the African continent, and knowledge of the geochemical evolution of plumes and the regional tectonic setting of the surrounding area. Visit the Expedition Website ...

The 2011 MagIC Science & Database Workshop was held from Sept. 19^th to 21^st, 2011, at UCSD. Sept 21^st was dedicated to a Special Hands-on MagIC Data Upload Workshop requiring separate registration. Scientific talks at the meeting covered a wide range of magnetic topics with keynotes on biogeomagnetism, magnetic stratigraphy, and magnetic properties under high pressure. The Magnetics Information Consortium (MagIC) highlighted its database for geomagnetic, paleomagnetic, and rock magnetic data with a series of talks and hands-on seminars for uploading data. See the Meeting's Website for More Information ...

IODP Expedition 330 to the Louisville Seamount Trail will drill four underwater volcanoes off the NE coast of New Zealand. One hypothesis states that these volcanoes formed above a narrow plume of hot mantle rising from a position deep in the Earth's mantle. For decades scientists assumed these mantle plumes remain anchored there for tens of millions years, but there is mounting evidence that mantle plumes wander in a large-scale mantle wind. This expedition aims to establish how much mantle plumes may have moved over the last 80 million years and whether the Louisville hotspot moved coherently with the Hawaii hotspot. Visit the Expedition Website ...

New MagIC v2.4 Released! A new version of the online database for the Magnetics Information Consortium is now available including a much improved usage of controlled vocabularies and support of more magnetic data types. Users can upload their own rock and paleomagnetic data and data from legacy studies into this online relational database. Data uploads prepared with older versions of the MagIC software will be automatically update once reprocessed with the new version of the console software. Download software ...

PmagPy has been added to Earthref.org's Online Modeling Tools. PmagPy is a software package written by Lisa Tauxe for handling paleomagnetic data, including the MagICPy scripts to help import paleomagnetic data into the MagIC database. Knowledge of Python is not required to use the software, but would be useful for customizing the programs for your own use. Detailed instructions for the PmagPy installation and numerous examples are provided in the documentation. Read more ...

Lisa Tauxe has updated her Online Book: Essentials of Paleomagnetism (with contributions from R. Butler, S.K. Banerjee and R. van der Voo). It attempts to draw together the various principles and practices within paleomagnetism in a consistent and up-to-date manner. Paleomagnetic Data are useful in many applications of the Earth Sciences from determining paleocurrent directions to analyzing the long-term behavior of the geomagnetic field. Despite the diversity of applications, the techniques required to obtain and analyze the data are similar and all make use of the new MagIC Database. Read more ...

The EarthRef Digital Archive (ERDA) invites User Upload of digital files. We recommend that you use this digital archive to store any digital file that does not fit into the structure used by the MagIC Upload Wizard found on the upper left of this page. Typical ERDA file uploads may include field work pictures, animations, video excerpts, custom software, location maps, white reports, workshop volumes, field trip guides, etc. Uploaded files will be immediately available to all users of the EarthRef.org website. Start a new ERDA file upload ...

The basic design of the EarthRef.org website has been updated based on feedback from many of its users. Currently, we are about to finish the Second Phase of this Redesign Project, in which we have improved the functionality and information displayed on the home pages for EarthRef.org, GERM, MagIC and ERESE. Each of these web sites will function as the Web Portal for its corresponding database, while taking advantage of the infra-structure provided by the EarthRef.org umbrella web site and database. Please check back with us on a regular basis to see how the design evolves over the next few months. We would appreciate your comments or suggestions through the Feedback form.

The GEOMAGIA50 database is now up and running. GEOMAGIA50 is a database that comes with a web interface intended to give users easy access to archeomagnetic data. At present, the database contains 8,000 determinations of geomagnetic field directions and intensities for the past 50,000 years. View database ...

Three scientists from the Scripps Institution of Oceanography and the University of Hawaii are traveling to Antarctica to study the geological history of Earth's magnetic field. This scientific endeavor, project G-182 (spelled 'golf-1-8-2') of the US Antarctic Program will begin on November 16, 2006 with a flight from Christchurch/New Zealand to McMurdo in Antarctica. We will provide you with regular updates of the 2006/2007 expedition, but above all, you will be able to contact us and ask questions or get more information, because McMurdo station has high-speed internet access. So, we are looking forward to share our adventures with you or to chat to you over the internet! Expedition home page ...

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