Nuclear magnetic resonance characterization of shallow marine sediments from the Nankai Trough, Integrated Ocean Drilling Program Expedition 333

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doi: 10.1002/2013JB010784
Author(s): Daigle, Hugh; Thomas, Brittney; Rowe, Harry; Nieto, Michael
Author Affiliation(s): Primary:
University of Texas, Austin, Department of Petroleum and Geosystems Engineering, Austin, TX, United States
Other:
Vanderbilt University, United States
Volume Title: Journal of Geophysical Research: Solid Earth
Source: Journal of Geophysical Research: Solid Earth, 119(4), p.2631-2650. Publisher: Wiley-Blackwell for American Geophysical Union, Washington, DC, United States. ISSN: 2169-9313
Note: In English. 45 refs.; illus., incl. sect., 3 tables, geol. sketch map
Summary: We measured nuclear magnetic resonance (NMR) relaxation times on samples from Integrated Ocean Drilling Program Expedition 333 Sites C0011, C0012, and C0018. We compared our results to permeability, grain size, and specific surface measurements, pore size distributions from mercury injection capillary pressure, and mineralogy from X-ray fluorescence. We found that permeability could be predicted from NMR measurements by including grain size and specific surface to quantify pore networks and that grain size is the most important factor in relating NMR response to permeability. Samples within zones of anomalously high porosity from Sites C0011 and C0012 were found to have different NMR-permeability relationships than samples from outside these zones, suggesting that the porosity anomaly is related to a fundamental difference in pore structure. We additionally estimated the size of paramagnetic sites that cause proton relaxation and found that in most of our samples, paramagnetic material is present mainly as discrete, clay-sized grains. This distribution of paramagnetic material may cause pronounced heterogeneity in NMR properties at the pore scale that is not accounted for in most NMR interpretation techniques. Our results provide important insight into the microstructure of marine sediments in the Nankai Trough. Abstract Copyright (2014), . American Geophysical Union. All Rights Reserved.
Year of Publication: 2014
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 06 Petrology, Sedimentary; Capillarity; Clay minerals; Cores; Expedition 319; Expedition 333; Grain size; IODP Site C0011; IODP Site C0012; IODP Site C0018; Integrated Ocean Drilling Program; Marine sediments; NMR spectra; NanTroSEIZE; Nankai Trough; North Pacific; Northwest Pacific; Pacific Ocean; Permeability; Pore pressure; Porosity; Sediments; Sheet silicates; Shikoku Basin; Silicates; Spectra; West Pacific
Coordinates: N324453 N324453 E1365501 E1365501
N324944 N324945 E1365256 E1365254
N330925 N330925 E1364053 E1364053
Record ID: 2014086370
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom