The COAS marine geology group operates a facility for sampling the seafloor via coring and dredging. Available equipment includes large (4-inch diameter) and small (2.5-inch diameter) piston corers, gravity corers, box corers, and an eight-tube multi-corer. OSU coring technicians have been active in seagoing operations since 1971. One of two such national facilities with a broad range of coring capabilities, the OSU group will contract coring operations on any ship with appropriate wire and winch capabilities. Core description and archiving services are available from the OSU core repository. For information on current prices and equipment availability, contact Prof. Nick Pisias.
Cosmogenic Isotope Lab
The equipment in this lab includes, rock crusher and pulverizer, sieves and roe-tap, Franz magnetic separator, HF and perchloric acid hoods, laminar flow hood, ultrasonic baths, ion exchange columns, pan & high-precision analytic balance, ultra-pure water system, high-temperature crucible asher, multiple centrifuges, extensive Teflon and glassware sets. For more information you can contact the lab supervisors Ed Brook and Peter Clark or the student attendants Shaun Marcott and Josh Cuzzone.
Ice Core Lab
This lab is equipped with a New Wave Research microsampling device allowing high-resolution sampling of materials for isotopic or chemical analysis. Features include sub-micron stage resolution and positional accuracy, real-time video observation using an S-video color CCD video camera , sample height detection and tilt correction, 50 mm of computer-driven sample movement on X, Y and Z axes, open-stage architecture to accommodate larger samples, low-eccentricity, high-torque DC milling chuck with speeds from 1200 to 35000 rpm, precision tungsten-carbide milling tools for high spatial resolution. The micromill is mostly used for speleothem and otholiths sampling. For more information please contact Andy Ungerer or Alan Mix.
COAS maintains two micropaleontology laboratories that specialize in calcareous fossils such as benthic and planktic foraminifera (see Prof. Alan Mix for further information), and siliceous fossils such as radiolarians and diatoms (see Prof. Nick Pisias for further information). Each of these laboratories includes sample preparation facilities, a variety of microscopy and microphotography capabilities, and reference collections of fossil species.
Organic Geochemistry Labs
These laboratories are equipped for organic analyses to carry out sample preparation, bulk analyses, extraction, extract separation, pyrolysis, and compound characterization and structure elucidation. Bulk organic matter can be analyzed for elemental composition (CHNS), carbon isotope composition, and effects of pyrolytic (thermal) alteration. Organic compound mixtures that are extracted from samples are then characterized after suitable separation, derivatization, and quantitation by identification of homologous compound series and specific biomarker tracers. This is accomplished by various methods of chromatography and by gas chromatography coupled with mass spectrometry. The lab is equipped with gas chromatographs and Hewlett-Packard 5971B-MSD GC-MS systems.
This regional facility is used extensively by OSU and COAS researchers, university and private researchers from throughout North America, and international researchers. The laboratory houses three gas-source isotope-ratio mass spectrometers with diverse inlet systems to study natural abundances of light stable isotopes in solids, liquids, and gases. For more information, contact Prof. Alan Mix.
OSU/COAS Marine Geology Sample Repository
COAS operates the Marine Geology Sample Repository, a 36,000 cubic foot refrigerated sediment core archive and processing laboratory, as a national facility. The repository contains over 5,000 deep-sea sediment cores collected from all major ocean basins; rock samples from more than 500 dredges, ALVIN dives or ROV tows; 2,200 manganese nodules; 1,500 sediment trap samples; and nearly 700 plankton tow samples. Sediment and rock samples are available to qualified investigators. The laboratory includes core splitting, sampling, and photographic facilities in addition to gamma density, magnetic susceptibility and line-scan digital-imaging capabilities. Sample archiving and describing services, as well as use of the repository’s major analytical equipment, are available on a cost-recharge basis. For more information, contact Prof. Alan Mix.
The W.M. Keck Collaboratory for Plasma Spectrometry has four plasma spectrometers: Nu Plasma multi-collector ICP-MS, VG Elemental Axiom SC high-resolution ICP-MS, VG Elemental ExCell quadrupole ICP-MS, and Varian Liberty 150 ICP-AES. Sampling devices include an excimer laser, ion chromatograph, custom-built shell-cleaning apparatus, and autosamplers. This instrumentation represents the preeminent emerging technology in inorganic elemental analysis. A diverse group of collaborating scientists can access a new, world-class chemical analysis facility (including a clean room), interactively generating, interpreting and sharing technology, data, and ideas. High-speed switching and routing hardware can deliver nearly 10 Gb/s to each office/lab and a classroom, making it possible for real-time interaction between remote users and the facility instruments. For more information on the W.M. Keck Collaboratory for Plasma Spectrometry, please contact Andy Ungerer, Collaboratory Manager, or Gary Klinkhammer, Collaboratory Director.