(PDF) Uranium Distribution and Incorporation Mechanism
with a Merchantek micromill system, with a method similar. to Adkins et al. (2003) and Gagnon et al. (2007). To generate. coupled Me/Ca and stable isotope measurements on the same.
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Oxygen and carbon isotope fractionation in calcitic
The Mechantek micromill is attached to a computer and high-resolution video display so that milling lines can be matched precisely to banding within the coral. ... A matrix was precisely matched to banding pattern through milling lines on the Merchantek micromill and constructed on the outer 6.4 ...
Stable oxygen isotope record of the Eocene-Oligocene …
of the structures with a Merchantek MicroMill so as to subsume any intra-annual variation within the sample and thereby derive overall average bulk compositions. Three to five samples were collected in this manner from each specimen. Benthic foraminifera were prepared as in Thomas et al. (2000). Between 5
Micro drill: ESI New Wave Micromill
The New Wave MicroMill is a microsampling device designed for precision milling to recover sample powder for chemical and isotopic analysis. Submicron stage resolution and positional accuracy, together with specialist software allows for sampling in complex structures where precision is essential. The integrated video camera allows for real ...
Palaeogeography, Palaeoclimatology, Palaeoecology
trolled Merchantek micromill to generate powder for isotopic analysis. When drilling, a drill bit substantially finer than the shell thickness wasemployed,andsamplinggoalsaimed to averageover seasonal var-iation. This process allowed access to the interior of the fossil shell, which is less likely to experience diagenetic alteration. Samples ana-
(a) The New Wave-Merchantek Micromill device operating at the
One measurement on the micrometric veinlet of sample TL112 was performed by drilling the sample in situ (Di Salvo et al., 2018) with a MicroMill™ device (Merchantek-New Wave Research ...
NATURAL VARIABILITY OF MINOR AND TRACE …
increments with a Merchantek Micromill from the growing edge to the stain line. ...
Coherent tracer correlations in deep-sea corals and implications …
In brief, we used a computer controlled Merchantek Micromill system, with the goal of making powders of coral growth bands that can be measured for stable isotopes (δ 13 C and δ 18 O) as well as Me/Ca ratios. For stable isotopes, the collected sample powders (30–100 μg) were transferred to Kiel device vials and analyzed on a Finnigan …
IsoLab
Micromill_Merchantek_NewWave.pdf Microzon_VPFX_GarageFumeHood_Manual.pdf MKS-943-man.pdf netatmo.pdf NI_9211.pdf OPS_Diagnostics_BacterialFreezeDryingProtocol.html OPS_Diagnostics_BacteriaLyophilizationOverview.html PAL-Injection-Unit-Preventative …
Stable Isotope Lab (SIL)
We have a fully operational micromilling device, which facilitates accurate, fine-scale, sampling of carbonate material. The Merchantek micromill with a Leica GZ6 microscope is capable of several micrometer sampling steps.
Stable Isotope Lab (SIL)
The Merchantek micromill with a Leica GZ6 microscope is capable of several micrometer sampling steps. The laboratory is equipped with devices to aid in the preparation and purification of samples for isotopic and elemental determinations. These facilities include a ballmill grinding device, a freeze-dryer, solvent-extraction apparatus, and ...
Nina Millicent Whitney
Collected and analyzed oxygen isotopes in Arctica islandica shells using a Merchantek Micromill and a gas bench interfaced with a Thermo Delta Plus XL Isotope Ratio Mass Spectrometer. Designed an experiment testing the reproducibility of oxygen isotope measurements in Arctica islandica shells.
New Wave Research Acquires Merchantek
While the New Wave Research and Merchantek brand names and product lines will remain intact, manufacturing and business functions will center in New Wave's new Fremont facility. Merchantek's offices in Bozeman, MT will serve as an engineering center for both companies and a manufacturing location for special product configurations.
Alteration of micromilled carbonate 18O during Kiel Device …
speed Merchantek Micromill drill (hereafter micromilled). The drill was set to 50% speed (approximately 18500rpm). Aragonite was derived from a Late Cretaceous molluscan shell which was crushed and sieved through a set of standard sized sieves, generating a sub‐32‐µm fraction. Crushed and micromilled samples from the same shell were ...
New Wave/Merchantek Micromill | Te Herenga Waka
6012 New Zealand Description Micromilling device designed for high resolution milling to recover sample powders for chemical and isotopic analysis. Contacts Bruce Charlier geo …
Curriculum vitae
Tusk micro-sampling using computer automated Merchantek micromill Pretreatment of tusk dentin for stable isotope analysis of carbonate (C, O) and collagen (C, N) Sampling hair for stable isotope analyses (C, N, O, H) Sampling and processing hair for cortisol analysis .
Nina Millicent Whitney
• Collected and analyzed oxygen isotopes in Arctica islandica shells using a Merchantek Micromill and a gas bench interfaced with a Thermo Delta Plus XL Isotope Ratio Mass Spectrometer. • Designed an experiment testing the reproducibility of oxygen isotope measurements in Arctica islandica shells.
Equipment – Alabama Stable Isotope Laboratory
Micromill Equipment Type. Preparation Tool; We have two ESI (formerly Merchantek, New Wave) computer controlled micromilled for high spatial precision drilling. This equipment is primarily used to ontogenetically sample shell material.
A large metabolic carbon contribution to the C record in …
(in cross-section) using a Merchantek MicroMill. Shells from Johnson Creek and Back Sound were sampled at an annual resolution using the annual growth lines on the shell, which form in late summer/early winter in this region (Peterson et al., 1983). To accomplish this, lines were milled
(PDF) Seasonal scheduling of shellfish collection in the Middle …
The analysis of the lithics, shellfish and tortoise recovered from layers dating to between 11.8 and 9.7 ka at Klipdrift Cave (KDC), De Hoop Nature Reserve, southern Cape, provides new information on the Oakhurst technocomplex.
Effects of seawater-pH and biomineralization on the boron …
bands using either a Merchantek MicroMill with a 0.5 mm tungsten carbide drill bit or a Sears variable-speed rotary tool with a 1.0 mm diamond burr (Fig. 1d). Average sample spacing along the radial growth direction was approximately 1–3 mm. 2.3. Hydrographic data and boron isotopes in seawater Temperature,salinity,alkalinity ...
Micromill | Bloomsbury Environmental Isotope Facility
The Merchantek/New Wave MicroMill The Micromill is a microsampling device designed for high resolution milling to recover sample powder from rocks, speleothems, belmenites, bivalves and corals for chemical and isotopic analysis.
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Stable Isotope Signatures of Middle Palaeozoic Ahermatypic
Powder samples for carbon and oxygen isotope measurements were taken from slabbed coral surfaces using a Merchantek MicroMill sampling device. The microdrilling sampling technique, commonly used in investigations of modern corals (e.g., [ 53, 54 ]), is here applied for the first time in studies of Palaeozoic coral skeletons.
Microanalysis Lab | Department of Anthropology
Merchantek MicroMill: A micromill was purchased with an STF grant in 2005 to allow for precision microscopic drilling of various lithic and biogenic materials for isotopic, trace elemental, and radiometric analyses.
Research | Miami University
New Wave Research/Merchantek Products Micromill for high resolution microsampling of minerals and glass at the micron scale; produces powders for isotopic and other geochemical analyses. COMPUTATIONAL GEOLOGY Geology Computer Lab Departmental computer lab for teaching and research; hosts discipline-specific software.
microfacility
manufactured by Merchantek-NewWave Research, is truly the state of the art in high-resolution micro sampling. The Micromill can extract materials as small as 1/4 …
Contributions to the Eocene climate record of the Antarctic …
Sampling on a Merchantek MicroMill produced powders that were analyzed for their stable oxygen and carbon isotope values. In addition, the . 87. Sr/ 86. Sr ratios of skeletal aragonite from 43 bivalves distributed throughout the section were analyzed in an effort to improve age control within the La Meseta Formation. Paleotemperatures are