Publisher’s Notes

This work was supported by the U.S. Department of Energy under Contract No. DE-FE0023919.

This work was the result of scientific collaboration between the following institutions The University of Texas at Austin (UT), DOE, NETL, the United States Geological Survey (USGS), the Bureau of Ocean Energy Management (BOEM), The Ohio State University, Columbia University, University of New Hampshire, Oregon State University, University of Washington, Tufts University, and Colorado School of Mines, and Geotek Ltd.

Disclaimer

This report was prepared as an account of work sponsored by the U.S. Department of Energy. The U.S. Department of Energy, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Department of Energy or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the U.S. Department of Energy or any agency thereof. This report has been peer reviewed and approved for publication consistent with United States Geological Survey (USGS) Fundamental Science Practices (https://pubs.usgs.gov/circ/1367/).

Photos

UT-GOM2-2 expedition photos are the property of the University of Texas Institute for Geophysics and are public access. High-resolution images are available upon request.

Cover photograph shows the Helix Q-4000 over the Terrebonne Basin Site H on 30 July 2023. Photo credit: Peter B. Flemings

Copyright

Except where otherwise noted, this work is licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) license (https://creativecommons.org/licenses/by/4.0/). Unrestricted use, distribution, and reproduction are permitted, provided the original author and source are credited.

Volume DOI

10.5281/zenodo.13970849

Publication Date

September 29, 2025

Contents

Scientific Prospectus

Preliminary Report

Expedition Report Chapters

Expedition UT-GOM2-2 Summary

Expedition UT-GOM2-2 Methods

Expedition UT-GOM2-2 Site H

Expedition UT-GOM2-2 Site H Appendices

Expedition UT-GOM2-2 Datasets

Acknowledgements

The UT-GOM2-2 Expedition was completed in late summer of 2023 after many years of scientific, engineering, and logistical planning.  An expedition lead by the University of Texas at Austin (UT) was first conceived in the spring of 2014 but its roots go back to the 2009 Gas Hydrates Joint Industry Project Leg II (JIP II). It is impossible to name the hundreds of contributing individuals and institutions. The leadership team is so thankful for the support of so many without which we would not have been able to complete this large effort.

The United States Department of Energy – Office of Fossil Energy funded this initiative and provided enormous logistical and technical support through many significant strategic changes. DOE’s National Energy Technology Laboratory (Kyle Clark, Rick Baker, John Rogers, Ray Boswell, Gabby Intihar, Sailendra Mahapatra, Jared Ciferno, Vanessa Nunez-Lopez, and Maria Vargas) provided careful counsel and technical guidance throughout the effort. Our Advisory Board (Rick Baker, Ray Boswell, Ann Cook, Tim Collett, Bill Shedd, and Matt Frye) was key to identifying the highest priority scientific objectives for the expedition, and providing the guidance to perform the highest priority science within the limited budget. Our Science Team committed endless hours working the scientific and logistical details required to meet our science objectives (Carla Thomas (Lead), Stephen C. Phillips, Timothy S. Collett, Ann E. Cook, Evan Solomon, Frederick Colwell, and Joel E. Johnson).

The USGS, the Bureau of Ocean Energy Management (BOEM), and the Bureau of Safety and Environmental Enforcement (BSEE) helped us deal with many regulatory concerns. I thank Timothy S. Collett and Stephen C. Phillips (USGS), Teree Campbell and Chad Vaughan (BOEM), and William Sanders and Colin Davis (BSEE). Bill Shedd (BOEM), Stephen Palmes (BOEM), and Matt Frye (BOEM) were wonderful sources of insight into both technical challenges and regulatory processes. We also thank Sharon Angove Environmental Protection Agency (EPA), Jeff Harris (Louisiana Department of Natural Resources).

At the University of Texas, there were enormous logistical, technical, and administrative challenges to overcome to achieve the expedition.  We acknowledge the enormous contributions of the leadership at the University of Texas. Jesse Houghton (Regulatory Lead), Dan Jaffe and members of his team Mark Featherston and Jill Allred, Eric Agnew, Linda Shaunessy, and Steve Rosen all played a pivotal role in contracting, insuring, and permitting this expedition with help from J. Connor Consulting, Inc. Sid Alexander of ANCO was instrumental in navigating the BOEM bonding and insurance requirements. The UT Institute of Geophysics Research Administration (Sara Sieberath, Benjamin Hester, and Elizabeth Kelton) made enormous contributions to making this expedition a success. Because of their efforts, UT is proud to continue to be the only University ‘Qualified Operator’ conducting operations in deepwater Gulf of America (Gulf of Mexico), United States.

Special thanks to the team of Jennifer L. Presley, editor, and Jennie L. Lamb, graphic designer, for their hard work in preparing the Preliminary Report and Expedition Reports for publishing.

Finally, none of this could have been accomplished without Geotek Ltd., Helix Energy, and TR Consulting. Their partnership and expertise enabled us to navigate the complex business of deepwater drilling. Geotek Coring, USA, and Geotek Ltd led the coring, downhole measurements, and core processing efforts unique to the mix of conventional and pressuring coring (Peter Schultheiss, Mike Mimitz, and Melanie Holland). All of the shipboard operational and technical staff of the Helix Q-4000 again provided outstanding support and maintained a positive “can do” attitude throughout the expedition. Darin Hilton (Helix Well Ops Commercial Manager), Callum Cook (Helix Well Ops Senior Project Manager, Dhananjay Dhorje (DD) (Helix Well Ops Senior Project Engineer), Vish Subramani (Helix Well Ops Project Manager), with help from Carla Thomas (Lead Project Manager) successfully orchestrated the complex operational planning, and logistics and were on hand each step of the way as challenges arose.  Thomas Red (TR Consulting) with his oilfield skills and connections served superbly as Company man and general translator between researchers and industry.

Thanks to so many in so many ways,

-Peter B. Flemings & the GOM2 Team

Expedition UT-GOM2-2 participants

Expedition-Related Bibliography

UTIG Publications

Scientific Prospectus

Peter B. Flemings, Carla Thomas, Timothy S. Collett, Frederick S. Colwell, Ann E. Cook, John T. Germaine, Melanie Holland, Jesse Houghton, Joel E. Johnson, Alberto Malinverno, Patrick Kevin Meazell, Tom Pettigrew,  Stephen C. Phillips, Alexey Portnov, Aaron Price, Manasij Santra, Peter Schultheiss, Evan Solomon, and Kehua You, 2023, UT-GOM2-2 Prospectus: Science and Sample Distribution Plan V2.3, https://doi.org/10.5281/zenodo.13694088

Preliminary Report

Peter B. Flemings, Carla Thomas, Stephen C. Phillips, Timothy S. Collett, Ann E. Cook, Evan Solomon, Frederick S. Colwell, Joel E. Johnson, David Awwiller, Irita Aylward, Athma Bhandari, Donald Brooks, Alejandro Cardona, Rachel Coyte, Tom Darrah, Marcy Davis, Brandon Dugan, Dan Duncan, John T. Germaine, Melanie Holland, Jesse Houghton, Reese Miller, Nicholas Mills, Michael Mimitz, Yuki Morono, Zachary Murphy, Joshua O’Connell, Ethan Petrou, Tom Pettigrew, Alexey Portnov, Marcie Purkey Phillips, Thomas Redd, Derek E. Sawyer, Peter Schultheiss, Kelly Shannon, Camille Sullivan, Cathal Small, Kayla Tozier, Man-Yin Tsang, Camila Van Der Maal, William F. Waite, Taylor Walton, 2024, Expedition UT-GOM2-2 Preliminary Report Terrebonne Basin Northern Gulf of Mexico, University of Texas Institute for Geophysics, https://doi.org/10.5281/zenodo.13648253

Proceedings Volume

Peter B. Flemings, Carla Thomas, Stephen C. Phillips, Timothy S. Collett, Ann E. Cook, Evan Solomon, Frederick S. Colwell, Joel E. Johnson, David Awwiller, Irita Aylward, Athma R. Bhandari, Donald Brooks, Jessica Z. Buser-Young, Alejandro Cardona, Michael A. Casso, Rachel Coyte, Tom Darrah, Marcy Davis, Brandon Dugan, Dan Duncan, John T. Germaine, Melanie Holland, Jesse Houghton, Saffron Martin, N. Tanner Mills, Michael Mimitz, Daniel Minarich, Yuki Morono, Zachary Murphy, Joshua O’Connell, Ethan Petrou, Tom Pettigrew, John W. Pohlman, Alexey Portnov, Marcie Purkey Phillips, Thomas Redd, Derek E. Sawyer, Peter Schultheiss, Kelly Shannon, Camille Sullivan, Cathal Small, Kayla Tozier, Man-Yin Tsang, Camila Van Der Maal, William F. Waite, Taylor Walton, 2025, Proceedings of the UT-GOM2-2 Deepwater Hydrate Coring Expedition, University of Texas Institute for Geophysics, https://doi.org/10.5281/zenodo.13970849.

Expedition Reports

Expedition UT-GOM2-2 Summary

Peter B. Flemings, Carla Thomas, Stephen C. Phillips, Timothy S. Collett, Ann E. Cook, Evan Solomon, Frederick S. Colwell, Joel E. Johnson, David Awwiller, Irita Aylward, Athma R. Bhandari, Donald Brooks, Jessica Z. Buser-Young, Alejandro Cardona, Michael A. Casso, Rachel Coyte, Tom Darrah, Marcy Davis, Brandon Dugan, Dan Duncan, John T. Germaine, Melanie Holland, Jesse Houghton, Saffron Martin, N. Tanner Mills, Michael Mimitz, Daniel Minarich, Yuki Morono, Zachary Murphy, Joshua O’Connell, Ethan Petrou, Tom Pettigrew, John W. Pohlman, Alexey Portnov, Marcie Purkey Phillips, Thomas Redd, Derek E. Sawyer, Peter Schultheiss, Kelly Shannon, Camille Sullivan, Cathal Small, Kayla Tozier, Man-Yin Tsang, Camila Van Der Maal, William F. Waite, Taylor Walton, 2025, Expedition UT-GOM2-2 Summary. In Flemings et. al., Proceedings of the UT-GOM2-2 Deepwater Hydrate Coring Expedition, University of Texas Institute for Geophysics, https://doi.org/10.5281/zenodo.13971076.

Expedition UT-GOM2-2 Methods

Peter B. Flemings, Carla Thomas, Stephen C. Phillips, Timothy S. Collett, Ann E. Cook, Evan Solomon, Frederick S. Colwell, Joel E. Johnson, David Awwiller, Irita Aylward, Athma R. Bhandari, Donald Brooks, Jessica Z. Buser-Young, Alejandro Cardona, Michael A. Casso, Rachel Coyte, Tom Darrah, Marcy Davis, Brandon Dugan, Dan Duncan, John T. Germaine, Melanie Holland, Jesse Houghton, Saffron Martin, N. Tanner Mills, Michael Mimitz, Daniel Minarich, Yuki Morono, Zachary Murphy, Joshua O’Connell, Ethan Petrou, Tom Pettigrew, John W. Pohlman, Alexey Portnov, Marcie Purkey Phillips, Thomas Redd, Derek E. Sawyer, Peter Schultheiss, Kelly Shannon, Camille Sullivan, Cathal Small, Kayla Tozier, Man-Yin Tsang, Camila Van Der Maal, William F. Waite, Taylor Walton, 2025, Expedition UT-GOM2-2 Methods. In Flemings et. al., Proceedings of the UT-GOM2-2 Deepwater Hydrate Coring Expedition, University of Texas Institute for Geophysics, https://doi.org/10.5281/zenodo.13971228.

Expedition UT-GOM2-2 Site H

Peter B. Flemings, Carla Thomas, Stephen C. Phillips, Timothy S. Collett, Ann E. Cook, Evan Solomon, Frederick S. Colwell, Joel E. Johnson, David Awwiller, Irita Aylward, Athma R. Bhandari, Donald Brooks, Jessica Z. Buser-Young, Alejandro Cardona, Michael A. Casso, Rachel Coyte, Tom Darrah, Marcy Davis, Brandon Dugan, Dan Duncan, John T. Germaine, Melanie Holland, Jesse Houghton, Saffron Martin, N. Tanner Mills, Michael Mimitz, Daniel Minarich, Yuki Morono, Zachary Murphy, Joshua O’Connell, Ethan Petrou, Tom Pettigrew, John W. Pohlman, Alexey Portnov, Marcie Purkey Phillips, Thomas Redd, Derek E. Sawyer, Peter Schultheiss, Kelly Shannon, Camille Sullivan, Cathal Small, Kayla Tozier, Man-Yin Tsang, Camila Van Der Maal, William F. Waite, Taylor Walton, 2025, Expedition UT-GOM2-2 Site H. In Flemings et. al., Proceedings of the UT-GOM2-2 Deepwater Hydrate Coring Expedition, University of Texas Institute for Geophysics, https://doi.org/10.5281/zenodo.13971276.

Datasets

Thomas, C., Houghton, J., & Flemings, P. B. (2025). Rig Operations data from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14680104.

Thomas, C., Geotek Ltd., & Geotek Coring Inc. (2025). Pressure Coring in the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14104224.

Johnson, J. E., Cook, A. E., Geotek Coring Inc., & Geotek Ltd. (2025). Conventional Coring in the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14518080.

Cardona, A., O’Connell, J., Brooks, D., Murphy, Z., Petrou, E., & Flemings, P. B. (2025). Wireline Penetrometer data from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14680720.

Geotek Ltd., Geotek Coring Inc., & Thomas, C. (2025). Core curation and sampling logs from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14926309.

Geotek Ltd., & Geotek Coring Inc. (2025). Core Images from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14261688.

Johnson, J. E., Tozier, K., Sullivan, C., & Awwiller, D. (2025). Visual core descriptions and smear slide results from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14518170.

Purkey Phillips, M. (2025). Calcareous Nannofossil Biostratigraphy from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14143460.

Bhandari, A. R., & Cardona, A. (2025). Thermal conductivity measurements of whole-round core samples from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14171332.

Cardona, A. (2025). In-situ temperature measurements in the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14171354.

Geotek Ltd. (2025). Gamma ray attenuation density and P-wave velocity of pressure cores from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14518408.

Geotek Ltd., & Geotek Coring Inc. (2025). Magnetic susceptibility of whole-round depressurized pressure core samples from the Terrebonne Basin, Walker Ridge 313 Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14518437.

Geotek Ltd. (2025). Multi-sensor core logs of conventional core sections from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14518382.

Geotek Ltd., & Geotek Coring Inc. (2025). Multi-sensor core logs of split core sections from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14277995.

Phillips, S. C., & Widlansky, S. J. (2025). Rock magnetic measurements of sediment from the Terrebonne Basin, Gulf of America (Gulf of Mexico), Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14775361.

Sawyer, D. E., & Germaine, J. T. (2025). Strength measurement of bulk sediment from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14107263.

Mills, N. T., Small, C., & Germaine, J. T. (2005). Particle size distribution (grain size) of discrete sediment samples from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14109861.

Germaine, J. T., & Small, C. (2025). Moisture and density of sediment samples from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14107593.

Geotek Ltd., & Geotek Coring Inc. (2025). Quantitative Degassing of pressure core sections from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14775236.

Colwell, F. S., Shannon, K., & Buser-Young, J. Z. (2025). Microbiology sampling and DNA extraction from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14767822.

Solomon, E., Walton, T., Aylward, I., Tsang, M.-Y., Mills, N. T., & Coyte, R. (2025). Salinity, alkalinity and sampling of pore water from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14146527.

Coyte, R., & Cook, A. E. (2025). Headspace gas composition (H2, H2S, C1-C6, O2, N2, CO2, Ar, and He) from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14518633.

Geotek Ltd., & Geotek Coring Inc. (2025). Void gas molecular composition (C1-C5 hydrocarbon, CO2, and air) from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.16689630.

Phillips, S. C., Pohlman, J. W., & Casso, M. A. (2025). Molecular (C1-C5 hydrocarbon, CO2, O2, and N2) and δ13C-CH4 composition of pressure core, void, and hydrate gases from the Terrebonne Basin, Gulf of America (Gulf of Mexico), Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.15626975.

Johnson, J. E., & Tozier, K. (2025). Elemental analysis (Total C, Total Org. C, Total N, Total S, and CaCO3*) of bulk sediment from the Terrebonne Basin, Walker Ridge Block 313, Site H, Expedition UT-GOM2-2 [Data set]. University of Texas Institute for Geophysics. https://doi.org/10.5281/zenodo.14146049.

Journals, Books, and Other Publications

Small, C., 2025, Characterizing the geomechanical properties beneath the seafloor in the
Terrebonne Basin, Gulf of Mexico outer continental shelf, Tufts University ProQuest Dissertations & Theses 32000461, http://proquest.com/docview/3207584068

Tozier, K., 2024, Investigating Late Pleistocene To Recent Bimodal Sedimentation in the Terrebonne Basin, Gulf of Mexico, UNH Master’s Theses and Capstones, https://scholars.unh.edu/thesis/1902.

Conferences

Awwiller, D., Johnson, J. E., Purkey Phillips, M., Phillips, S., et al., 2024, Stratigraphy, sediment composition, and provenance of Pleistocene strata of the Terrebonne Basin, northern Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Buser J. Z., Shannon, K., Morono, Y., Van Der Maal, C., et al, 2024, Microbial distribution in methane hydrate-containing deep sea sediments in the Terrebonne Basin, Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Cardona, A., Bhandari, A. R., Flemings, P. B., 2024, Heat flow in the Terrebonne Basin, Gulf of Mexico: establishing the gas hydrate stability zone. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Cook, A., Phillips, S., Flemings, P. B., Collet, T., Thomas, C., Frye, M., and McConnell, D., 2024, Comparing high saturation hydrate-bearing sand reservoirs in the northern Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

A. E. Cook; P. B. Flemings; C. Thomas; D. R. McConnell; M. Frye; and the UT-GOM2-02 Scientists, 2025, Comparing High Saturation Hydrate-Bearing Sand Reservoirs in the Northern Gulf of Mexico, Paper presented at the Offshore Technology Conference, Houston, Texas, USA, May 2025, https://doi.org/10.4043/35872-MS

Coyte, R., Wulsin, G., Phillips, S., Darrah, T., et al., 2024, Using noble gas tracers to constrain the residence time of methane gas hydrates in the Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Flemings, P. B., Thomas, C., Phillips, S., Collett, T. S., et al., 2024, Exploring the methane hydrate system through coring in the deepwater Gulf of Mexico: the UT-GOM2-2 Expedition. OS54B-01. Talk presented at the American Geophysical Union Fall Meeting, December 2024.

Flemings, P.B., Cardona, A., Bhandari, A.R., You, K., 2025, The Geomechanical Behavior of Hydrate Reservoirs: Implications for Drilling and Production, Paper presented at the Offshore Technology Conference, Houston, TX, USA, May 2025, https://doi.org/10.4043/35944-MS.

Johnson, J., Phillips, S., Purkey Phillips, M., Awwiller, D., et al., 2024, Sediment geochemistry and early diagenesis in the Terrebonne Basin, Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Kumar, A., Cook, A. E., and the UT-GOM2-2 Scientists, 2024, An unusual seafloor sand in the Terrebonne Basin, Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Martin, S., Cook, A. E., Holland, M. E., Thomas, C., et al., 2024, Insights from X-ray computed tomography on core from the Terrebonne Basin, Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Phillips S., Coyte, R., Casso, M., You, K., et al., 2024, Accumulation of microbial methane in hemipelagic sediments of the Terrebonne Basin, northern Gulf of Mexico. OS54B-02. Invited talk presented at the American Geophysical Union Fall Meeting, December 2024.

Purkey-Phillips, M., Johnson, J. E., Phillips, S., Tozier, K., 2024, High-resolution calcareous nannofossil biostratigraphy in the Terrebonne Basin, northern Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Sawyer, D., Germaine, J., Cardona, A., Bhandari, A. R., et al., 2024, Sediment shear strength properties within the hydrate stability zone: results from the Gulf of Mexico Deepwater Hydrate Coring Expedition, Terrebonne Basin, Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Small., C., Germaine, J., Cook, A. E., Cardona, A., et al., 2024, Characterization of the compressive behavior of sediment in the Terrebonne Basin, Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Small., C., Germaine, J., Johnson, J. E., Cook, A. E., et al., 2024, Downhole variation of porosity and grainsize in the Terrebonne Basin, Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Solomon, E., Walton, T., Tsang, M., Aylward, I., et al., 2024, Geochemical constraints on the genesis of methane hydrates in the Terrebonne Basin, Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Thomas, C., Flemings, P. B., Cook. A. E., Phillips, S., et al., 2024, Pressure coring in the Terrebonne Basin, Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Tozier, K., Johnson, J. E., Phillips, S., Purkey Phillips, M., et al., 2024, Investigating Late Pleistocene to Recent Bimodal Sedimentation in the Terrebonne Basin, Gulf of Mexico. OS51E. Poster presented at the American Geophysical Union Fall Meeting, December 2024.

Van der Maal, C., Flemings, P., Mills, T., Johnson, J., Greiner, K., 2024, Characterizing the Orange Sand in the Deepwater Gulf of Mexico. Poster presented at UT GeoFluids Annual Meeting, February, 2024