Mining the IODP database for relationships between lithology and physical, chemical, and magnetic properties

Author(s): Childress, Laurel B.; Acton, Gary D.; Percuoco, Vincent P.; Hastedt, Margaret
Author Affiliation(s): Primary:
Texas A&M University, International Ocean Discovery Program, College Station, TX, United States
Volume Title: AGU 2019 fall meeting
Source: American Geophysical Union Fall Meeting, Vol.2019; American Geophysical Union 2019 fall meeting, San Francisco, CA, Dec. 9-13, 2019. Publisher: American Geophysical Union, Washington, DC, United States
Note: In English
Summary: During each International Ocean Discovery Program (IODP) expedition a vast array of data, typically amounting to hundreds of gigabytes to several terabytes of information, are collected from drill cores. These data include physical, chemical, and magnetic properties and digital images collected continuously or every few centimeters along the cores using automated track systems, as well as a variety of analyses conducted on discrete subsamples taken from the cores. Coring just since the start of Expedition 349 in January 2014 has recovered over 50 km of core, resulting in a very large amount of data, most of which are accessible from the IODP LIMS database. Some of the properties typically measured include P-wave velocity, density, magnetic susceptibility, natural remanent magnetization, natural gamma radiation, and visible spectral reflectance. In addition, the lithology of all cores is described based mainly on visual characteristics of the surface of the split cores, visual examination of smear slides and thin sections, and compositional or mineralogical information derived from geochemical analyses. Our goal in this study is to mine these data for interrelationships that would otherwise be difficult to assess given the way the data are partitioned by specific property within the database. In particular, we extract basic lithologic information from the complex array of descriptive information and then tie that information to all other observations in order to characterize the physical, chemical, and magnetic properties of a myriad of lithologies.
Year of Publication: 2019
Research Program: IODP2 International Ocean Discovery Program
Key Words: 07 Marine Geology and Oceanography; Chemical composition; Data bases; Data management; Data processing; Information management; International Ocean Discovery Program; Magnetic properties; Marine sediments; Mineral composition; Sediments
Record ID: 2020039214
Copyright Information: GeoRef, Copyright 2020 American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States

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