Procedures for accurate determinations of ²³⁰Th-²³⁴U-²³⁸U isotope ratios using in situ laser ablation (LA) and micromill techniques for carbonates such as …

Semantic Scholar extracted view of "Stable isotope microsampling of speleothems for palaeoenvironmental studies : A comparison of microdrill, micromill and laser ablation techniques" by C. Spötl et al. ... Micromill and in situ laser ablation sampling techniques for high spatial resolution MC-ICPMS U-Th dating of carbonates.

A high-resolution sampling technique for stable-isotope measurements in otoliths is now available, but little is known about the precision and accuracy of the results when using this technique. Otolith samples of pen-reared cod (Gadus morhua L.) with well-defined temperature history were obtained using this high-resolution sampling …

Request PDF | Simultaneous determinations of U-Pb age, Hf isotopes and trace element compositions of zircon by excimer laser-ablation quadrupole and multiple-collector ICP-MS | We describe an in ...

Low natural variation in 87 Sr/ 86 Sr among otoliths from the same rivers allows for conservative estimates of external precision of techniques. Thus, we demonstrate that Sr isotope ratios obtained by LA-MC-ICPMS can be accurate and precise, bypassing the time-intensive sample preparation required by microdrilling and …

A significant effort to develop microspatial sampling techniques for teeth (human and non-human) ... In terms of stable isotope and trace element research, some researchers have moved away from the traditional bulk sampling approaches that see entire teeth and/or tooth crowns destroyed, and toward other techniques that are less …

a modified technique for in situ micro-sampling of mammuthus tooth enamel for stable isotope analysis kayla kolis, chris widga, paul countryman, alan wanamaker, j. douglas walker, john feldman May ...

1. Convenience sampling. A convenience sample simply includes the individuals who happen to be most accessible to the researcher. This is an easy and inexpensive way to gather initial data, but there is no way to tell if the sample is representative of the population, so it can't produce generalizable results. Convenience …

Procedures for accurate determinations of 230 Th- 234 U- 238 U isotope ratios using in situ laser ablation (LA) and micromill techniques for carbonates such as speleothems and corals are presented. For LA analyses we use a New Wave Research UP193HE laser and a new multiple ion counting detector …

Semantic Scholar extracted view of "Methods for the microsampling and high-precision analysis of strontium and rubidium isotopes at single crystal scale for petrological and geochronological applications" by B. Charlier et al. ... Micromill and in situ laser ablation sampling techniques for high spatial resolution MC-ICPMS U-Th dating of ...

In this paper, we describe methods used in Sr isotope determinations for geochronological and petrological applications within and among the crystals of …

Procedures for accurate determinations of 230 Th-234 U-238 U isotope ratios using in situ laser ablation (LA) and micromill techniques for carbonates such as speleothems and corals are presented. For LA analyses we use a New Wave Research UP193HE laser and a new multiple ion counting detector system available for the …

KEYWORDS: laser ablation, radiogenic isotopes, non‐traditional stable isotopes, geochronology, geochemical mapping INTRODUCTION The advent of laser ablation …

In the 21st century, multi-elemental approaches, such as micro-sampling techniques (e.g., Dolphin et al., 2016), element mapping methods (e.g., Pemmer et al., 2013) and "non-traditional isotopes ...

Methods: This study presents data for a MicroMill-assisted sampling method that allows for sampling at 0.35mm width x 1mm depth increments following the incremental growth pattern of dentine.

isotope zoning has been observed in single zircon grains. The micro-analyses of Zr isotopes are the powerful tools to identify the characteristics of these Zr isotope zoning (Kirkpatrick et al., 2019; Zhang et al., 2019). Kirkpatrick et al. (2019) reported the first in-situ analysis of δ94/90Zr in zircon using SIMS. The

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Download scientific diagram | Sampling set-up and design. (a) Micromill sampling showing camera, drill, bone, projected bone image, drilled bone powder and annual layer guide. (b) Matched annual ...

Rationale. Sampling of dentine for stable carbon (δ 13 C) and nitrogen (δ 15 N) isotope ratios in the direction of tooth growth allows the study of temporal changes to the diet and physiological stress of an individual during tooth formation. Current methods of sampling permanent teeth using 1 mm increments provide temporal resolution of 6–9 …

Recent years have seen a strong demand for higher resolution continuous stable isotope sampling in order to address issues of climate variability on short (i.e. annual to centennial) time scales including rapid changes in the environment. ... This demand has resulted in an renaissance of semi automated micromill techniques, …

INTERNATIONAL ATOMIC ENERGY AGENCY, Isotopic and Chemical Techniques in Geothermal Exploration, Development and Use: Sampling Methods, Data Handling, Interpretation - Edited by Stefán Arnórsson, Non-serial Publications, IAEA, Vienna (2000) Download to: EndNote BibTeX *use BibTeX for Zotero

Request PDF | Stable isotope microsampling of speleothems for palaeoenvironmental studies: A comparison of microdrill, micromill and laser ablation techniques | Three different techniques are ...

Micromill sampling has been successfully applied to the measurement of stable isotopes of δ 13 C and δ 18 O from otoliths of various fish (Høie et al., 2004, Rooker and Secor, 2004, Høie and Folkvord, 2006), but there is no information to date regarding the performance of the technique for trace elements.

Here, we combine micromill extraction ... was then extracted from each chondrule using a New ... grained chondrules (to lower peak temperatures and/or. ... micromill device new wave price. micromill laserablation sampling techniques isotope labs micromill device new wave price « mining quarry crusher ...

Detailed characterization of diagenetic fluid behaviour and evolution is commonly hindered by shortage of appropriate and economic methods to carry out in situ analysis in the tiny diagenetic mineral crystals. Using micromill sampling method, this study presents in situ stable isotopic data for the growth zones of saddle dolomite …

Three different techniques are currently in use to microsample speleothem (and tufa) specimens at moderate to high spatial resolution, manual microdrilling using a dentist …

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Recent developments in both sampling techniques and instrumentation have allowed detailed life‐history approaches on incrementally grown tissues, particularly on tooth primary dentine, to obtain fine‐resolution sequential isotope data through micro‐samples. ... With the help of a MicroMill it is possible to get very small samples …

Carpenter Microsystems CM-2 Micromill Sampling Robot: this state-of-the-art tool allows microscopic sampling of sea turtle humerus, fish otoliths, marine mammal teeth, and shark vertebrae for stable isotope analysis. ... Seminoff JA, Avens L, Kurle CM (2016) Methods for sampling sequential annual bone growth layers for stable isotope analysis ...

We present a novel method for the determination of Th and U isotopic ratios by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) …