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SUMMARY:OGS Colloquium\, April 9th\, 1-2 PM\, Prof. Larry Krissek- Scientific Ocean Drilling
DESCRIPTION:Scientific Ocean Drilling: Fifty-Plus Years of Scientific Advances \n\n\n\n\nThe Ohio Geological Society Colloquium\nThursday\, April 9th\, 2026\nTalk Begins at 1 PM\nHorace R. Collins Laboratory & Core Repository\n3307 South Old State Rd.\nDelaware\, OH 43015\nScientific Ocean Drilling: Fifty-Plus Years of Scientific Advances and International Collaboration\, But an Uncertain Future\nLarry Krissek – Professor Emeritus\, School of Earth Sciences\, Ohio State University\n  \nAbstract: \nScientific ocean drilling\, writ large\, was one of the first “big science” programs in the Earth Sciences\, and continued with strong U.S. leadership through a sequence of vigorous and scientifically productive international programs until 2024.   This long-term effort has provided foundational information about many major topics in the Earth Sciences\, including plate tectonics\, Earth’s climate history\, natural hazards\, and the deep biosphere.  This talk will explore the technical achievements and scientific accomplishments of five major drilling programs: Project MOHOLE\, the Deep Sea Drilling Project\, the Ocean Drilling Program\, the Integrated Ocean Drilling Program\, and the International Ocean Discovery Program (IODP2). \n  \nIODP2 concluded at the end of Fiscal Year 2024\, and scientific ocean drilling faces a challenging – and presently structurally uncoordinated – future.  An innovative science plan for efforts through 2050 has been produced by the international scientific community\, but the paths to implementing that science plan are uncertain.  For the foreseeable future the U.S. will use a Mission Specific Platform (MSP) approach\, while a European consortium + Japan + Australia/New Zealand will collaborate in IODP3 (using the D/V Chikyu and MSPs)\, and the Chinese spin-up their Deep Ocean Drilling Programme centered on their new drillship Meng Xiang. \n  \nProcurement of a new scientific ocean drilling vessel by the US is not guaranteed\, and any procurement that does occur is likely to take at least 10 years.  The community of US ocean-drilling scientists is energized by its impactful past and mobilized to address its promising future\, but the challenges are real and substantial. \n \n  \n  \n  \n  \n  \n  \n  \nBio: \nLarry Krissek is Professor Emeritus at the School of Earth Sciences\, Ohio State University.
URL:https://ohiogeosoc.org/events1/ogs-colloquium-april-9th-1-2-pm-prof-larry-krissek-scientific-ocean-drilling/
LOCATION:Horace R. Collins Laboratory & Core Repository\, 3307 South Old State Rd.\, Delaware\, OH\, 43015\, United States
ATTACH;FMTTYPE=image/jpeg:https://ohiogeosoc.org/wp-content/uploads/2026/03/Ocean-Drill-300x235-1.jpg
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DTSTART;TZID=America/Halifax:20260521T120000
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SUMMARY:OGS Rock Core Workshop May 21\, 2026
DESCRIPTION:The Ohio Geological Society\nRock Core Workshop\n \nTHURSDAY\, May 21st\, 2026\nLunch & Talk begin at 12:00 pm\nHorace R. Collins Laboratory & Core Repository\n3307 South Old State Rd.\nDelaware\, OH 43015\nLunch Provided for Registered Attendees\nRSVP required \nThe Clinton Complexity—High-Resolution Mapping of\nReservoir Sandstones in Southeastern Ohio\nMindy Thomas\, Ohio Geological Survey\nAbstract: This talk will describe rock core and petrophysical testing of core from the Clinton Sandstone with examples of the core from the H.R. Collins Core Repository for your perusal! \nAs carbon capture\, utilization\, and storage (CCUS) continues to be of interest in legacy oil fields around the U.S.—particularly in Ohio’s Appalachian Basin—the Grimsby Sandstone\, often referred to as the “Clinton Sandstone\,” remains a viable CCUS candidate\, both as a depleted reservoir and for enhanced oil recovery. Multiple Clinton fields in Ohio have recently been remapped and reexamined\, as seen in the Midwest Regional Carbon Sequestration Partnership’s report (2020). However\, the Gore Consolidated Oil Field (GCOF) of southeastern Ohio has received limited attention\, primarily for economic considerations\, leaving a gap in understanding its detailed geology. Since its discovery in 1907\, James W. Castle has done the most work on Clinton Sandstone in the GCOF\, which was published in 1998 and 2001. Sands identified by Castle in available cores were all interpreted as marine shoreface deposits\, including shelf-bar complexes dominated by waves and tides before a returning transgression shifted the siliciclastic depositional environment back to a widespread carbonate factory. \nFrom 2024–2025\, this study reexamined and compared all available Clinton GCOF cores studied by Castle and stored at the Ohio Geological Survey core repository. Additional data for the cores were collected through the DOE’s National Energy Technology Laboratory\, including XRF analyses and CT scans showing overlooked features such as marine ichnofossils\, cementation variation\, and subtle bedding. New\, detailed core descriptions were completed along with facies descriptions and interpreted depositional environments. \nThis study then took the work a step further and utilized that core work\, 117 digitized LAS well logs\, and over 950 depth-registered raster geophysical logs in the GCOF to apply sequence stratigraphic principles to the Clinton Sandstone. Sequence boundaries and major/minor flooding surfaces were identified; in addition\, shale/sand cutoffs were applied on gamma-ray logs to more accurately map sand-body morphologies at a high resolution in the field between stratigraphic surfaces. Net sand maps and cross sections generated for the GCOF—along with prior core work—showcase the incredible heterogeneity present in the Clinton reservoir\, which is now reinterpreted as a potentially tidally influenced deltaic paleogeographic setting with associated depositional environments. Understanding the complex heterogeneity of the sand-body morphology presented is critical for assessing the viability of the Clinton GCOF as a future carbon storage unit. \nBio: Mindy Thomas is a geologist in the Energy Group at the Ohio Geological Survey\, Ohio Department of Natural Resources\, where her primary interests are in sedimentology/stratigraphy\, subsurface mapping\, and the energy/petroleum industry. Her current work projects entail the detailed core work and subsurface mapping of the Silurian Clinton Sandstone Formation for CCUS/EOR potential along with the USGS funded STATEMAP project addressing the diachronous boundary between the Devonian Columbus and Delaware Limestones. Both projects entail the use of abundant well-log data for mapping\, field work\, and core work\, including utilizing the Geosurvey’s Geotek core scanner to collect density and gamma data on cores. Prior to her work in the division’s energy group\, Mindy was originally hired to work as the Lake Erie geologist for the state\, addressing many of the coastal erosion projects along the Lake Erie shore\, and working on the periodic remapping of high areas of coastal erosion in Ohio. Before joining the Ohio Geological survey in 2021\, Mindy worked for five years with Devon Energy out of Oklahoma City\, doing both exploration and operations geology in the Powder River\, Bighorn\, and Anadarko Basins. Mindy graduated with her Master of Science in Geology from the University of Oregon working on Miocene-Pliocene deposits in the Sonoran Desert that recorded the arrival of the first through-going Colorado River. In addition\, she received her Bachelor of Science from Miami University in Ohio\, where her undergraduate research focused on field/lab work on Cretaceous sandstones in the Uinta Basin of Utah. In her spare time\, Mindy enjoys spending time with her family\, cake decorating\, rock climbing\, skiing\, and embroidery.
URL:https://ohiogeosoc.org/events1/ogs-rock-core-workshop-may-21-2026/
LOCATION:Horace R. Collins Laboratory & Core Repository\, 3307 South Old State Rd.\, Delaware\, OH\, 43015\, United States
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