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Geochemical data of crystalline target lithologies of the Ries impact crater, Germany

This data set comprises major (XRF) and trace (XRF, ICP-MS, ICP-AES) element geochemistry of 185 samples of crystalline target lithologies of the Nördlinger Ries impact crater in Southern Germany. The sample set was originally collected by D. Stöffler for the investigation of shock metamorphism and Schmitt and Siebenschock for a research project on the occurrence of impact diamonds in the Nördlinger Ries crater. The data are supplementary material to Siegert et al. (2017, http://doi.org/10.1130/G39198.1) and are supplemented by by geochemical data of melt-bearing impact breccia (suevite) from the research drill core FBN 73 of the Ries impact crater (Siegert et al., 2017; http://doi.org/10.5880/fidgeo.2017.002. More information about sample preparation, methodology and precision expectations are given in the Explanatory File. Repository samples and thin sections are available for more or less the whole sample set of Stöffler and selected samples from Schmitt and Siebenschock, and are stored in the impactite collection of the Museum für Naturkunde Berlin.

Forschergruppe (FOR) 415: Metall(oid)organische Verbindungen in der Umwelt; Organometal(loid) Compounds in the Environment, Teilprojekt: Analytik umweltrelevanter nieder- und hochmolekularer organischer Metall(oid)spezies

Da in allen Teilprojekten der Forschergruppe 415 (Metall(oid)organische Verbindungen in der Umwelt) Analysen von metall(oid)organischen und anderen elementorganischen Verbindungen durchgeführt werden müssen und sich derartige Bestimmungen aufgrund des Einsatzes gekoppelter instrumenteller Verfahren aufwendig und arbeitsintensiv gestalten sowie hohe fachspezifische Erfahrung voraussetzen, werden speziesanalytische Untersuchungen am Institut für Umweltanalytik als zentraler Anlaufstelle durchgeführt, an dem der Einsatz von Kopplungstechniken zwischen chromatographischen Trennmethoden (GC, HPLC, IC) mit Multielementdetektoren (MS, ICP-MS und ICP-OES) zur Untersuchung fester, flüssiger und gasförmiger Proben bereits routinemäßig möglich ist. Mit den bisher etablierten Analysenmethoden ist es aber nicht möglich, alle im Projekt auftretenden analytischen Fragestellungen zu bearbeiten, so daß dem Projektbereich Z über die Routineanalytik hinaus wichtige Forschungs- und Entwicklungsarbeiten zufallen: - Abtrennung störender Matrixbestandteile - Identifizierung unbekannter Verbindungen - Verfahrensvalidierung und Qualitätssicherung.

Geochemical data of impactites of the Ries impact structure, Germany

The Ries impact structure in Southern Germany is one of the best-preserved impact structures on Earth. Melt-bearing impact breccia appears in a variety of well accessible exposures around the inner ring up to 10 km beyond the crater rim (so-called outer suevite) overlying a ballistically ejected lithic breccia (so-called ‘Bunte Breccia’). Occasionally individual melt bombs occur in the ‘Bunte Breccia’. Coherent impact melt rock outside the inner crater is located in the eastern megablock zone (Stöffler et al., 2013 and references therein).This data set comprises major and trace element geochemistry of samples from eight outer suevite exposures, one impact melt rock exposure, and one melt bomb of the Ries impact crater. Two analytical method approaches were performed: i) in-situ analysis using electron microprobe (EMP) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), and ii) analysis of whole-rock, melt separates, and suevite matrix separates using X-ray fluorescence (XRF), and inductively coupled plasma atomic emission spectroscopy (ICP-AES)/ inductively coupled plasma mass spectrometry (ICP-MS).

Composition of major oxide in bulk sediments from lake Baikal: ICP-AES data from P-rich samples

The sediment cores were sampled with a resolution of 10 cm, resulting in a total of 290 samples (Table 2). Around 250 mg of dried sediments was mechanically crushed through 100–200-μm mesh then processed by an alkaline digestion (Lithium meta-borate) in a Pt crucible at 1000 °C for 1 h. The residue was dissolved over night in a nitric acid matrix and then major and minor elements (Al, Ba, Ca, Fe, K, Mg, Mn, Na, P, S, Si, Sr, Ti) were analysed by Atomic Emission Spectrometry ICP-AES (Thermo Optek Iris Advantage, Royal Museum for Central Africa, Tervuren, Belgium). Y and Au internal standards were used to correct for instrumental drift. For both trace and major elements analyses, external calibrations were performed using artificial standard solutions and dissolved mineralised natural rock standard (e.g., BHVO-1, DWA, CCH-1 SGR-1, JGB-1).

Major composition (wt.%) of concretions, ICP-AES measurements

In order to get a complete geochemical signature, 14 P-rich concretions, chosen among the different cores, were acid digested (Table 3a and Table 3b). In a clean laboratory, 1.7 to 36 mg of concretions were digested overnight in a concentrated mixture of Suprapur acid (3 ml HCl/2 ml HNO3/1 ml HF) at 90 °C in sealed Teflon beakers. After evaporation to dryness, the residue was dissolved in 2.5 ml of 2% HNO3 Suprapur and diluted to 12 ml with Milli-Q water. During the same procedure, we have also dissolved and analysed, for comparison, a pure vivianite from Anlua, Cameroon (tubular crystals, MRAC collection).

Geochemical Analysis of Cations of Mud Samples of the KTB Main Hole HB1a.

Geochemical Analysis of Cations of Mud Samples of the KTB Main Hole HB1h.

Geochemical Analysis of Cations of Mud Samples of the KTB Main Hole HB1g.

Downcore variations of the opal content for the sedimentary sequence of VER98-1-14

Opal content was obtained by measuring the NaCO3 leached solution by inductive coupled plasma with an optical emission spectrometer (ICP-OES). The clay-rich layers are characterised by a low level of opal content. The diatomaceous layers are characterised by a high level of opal content.

Geochemical Analysis of Cations of Mud Samples of the KTB Pilot Hole VB1.

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