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10 results for “Organic geochemistry”
Figure 5 in Organic geochemistry of a high-latitude Lower Cretaceous lacustrine sediment sample from the Koonwarra Fossil Beds, South Gippsland, Victoria, Australia
Figure 5: Partial m/z 178, 202 and 228 mass chromatograms showing the distribution of common polycyclic aromatic hydrocarbons (PAH) in the aromatic fraction.
Figure 4 in Organic geochemistry of a high-latitude Lower Cretaceous lacustrine sediment sample from the Koonwarra Fossil Beds, South Gippsland, Victoria, Australia
Figure 4: Partial m/z 191 and 217 mass chromatograms used in calculation of sterane/hopane ratio. A ratio of 0.03 indicates that a very significant proportion of overall biomass in the lake was derived from bacteria.
Figure 2 in Organic geochemistry of a high-latitude Lower Cretaceous lacustrine sediment sample from the Koonwarra Fossil Beds, South Gippsland, Victoria, Australia
Figure 2: An uncommon example of disarticulation of a fish carcass, collected during an excavation of the Koonwarra Fossil Beds led by Tom Rich in 2013. This specimen was collected approximately 5 m from the bottom of the unit (defined here as the first> 20 cm thick unit of green siltstone/mudstone; the underlying rocks are predominantly cross-bedded, fluviatile arkosic sandstone).
Figure 3 in Organic geochemistry of a high-latitude Lower Cretaceous lacustrine sediment sample from the Koonwarra Fossil Beds, South Gippsland, Victoria, Australia
Figure 3: Saturate fraction total ion chromatogram and m/z 85 mass chromatogram showing distribution and relative abundances of n-alkanes and isoprenoids pristane and phytane.
Figure 1 in Organic geochemistry of a high-latitude Lower Cretaceous lacustrine sediment sample from the Koonwarra Fossil Beds, South Gippsland, Victoria, Australia
Figure 1: Location of the Lower Cretaceous Koonwarra Fossil Beds in South Gippsland, Victoria, Australia
Salmon Creek Organic Geochemistry Chemometric Data
Open the record for dataset details and reuse information.
Samples collected from the Von Damm and Piccard hydrothermal vent fields with the Hydrothermal Organic Geochemistry sampler.
<p><span>In January – February 2020, RV <em>Atlantis</em> cruise AT42-22 collected water, volatile, and fluid samples with ROV <em>Jason</em> from hydrothermal vent fields on the mid-Cayman rise. The expedition carried out 4 dives at the Von Damm field and 5 at the Piccard field. </span></p> <p><span>The first file is the</span><span> sampling logs and fluid geochemistry from the Hydrothermal Organic Geochemistry (HOG) sampler. It includes sampling locations, depths, heading, volumes, the highest temperature recorded during sampling, the average fluid temperature recorded during sampling, and pH. </span></p> <p><span>The second file is the measured geochemistry of the fluids, including concentrations of hydrogen sulfide, dissolved inorganic carbon, formate, phosphate, nitrate, nitrite, ammonia, and the stable isotope composition (</span><span><span>d</span></span><span>13C) of dissolved inorganic carbon.</span></p>
Supplementary Data to: "Organic Phases in Bivalve (Arctica islandica) Shells: Their Bulk and Amino Acid Nitrogen Stable Isotope Compositions" in Geochemistry, Geophysics, Geosystems
<p>This dataset contains the data generated for publication "Organic Phases in Bivalve (<em>Arctica islandica</em>) Shells: Their Bulk and Amino Acid Nitrogen Stable Isotope Compositions", including the following files:</p> <p>Specimen_ID_shell_morphology_measurement: Description of locality of collection, shell ID, shell working ID and the shell morphology measurement which can be referred to Section 2.1 of the manuscript.</p> <p>EA_IRMS_raw_error_propagate: This file contains data showing the m/z 28 signal intensities of all measurements and the error propagation that mentioned in Section 2.3 of the manuscript. It also includes the calculation of analytical accuracy and precision. </p> <p>Statistics: The file contains the summary of statistical analyses performed in this manuscript. Refer to Section 2.7 and 3.3.</p> <p>Recovery: It contains the recovery of the total nitrogen contents or amino acid concentrations after different treatments and this was mentioned in Section 4.1 of the manucript.</p> <p>Mass_balance: The computation procedure that showed in Section 3.4 and discussed in Section 4.3 can be traced in this file.</p> <p>GC-C-IRMS_long_term_sd: The file shows the long-term precision of GC-C-IRMS computed from the mixed standard of amino acids </p> <p>BSIA_d15N: The file contains all the bulk d15N data that used in this manuscript.</p> <p>CSIA_d15N: The file contains all the amino acid d15N data that used in this manuscript.</p> <p>AA_Composition: The file shows AA percent data that used in this manuscript.</p> <p><br> For details see main text of the manuscript.</p> <p><br> </p>
Organic geochemical proxies, foraminieral assemblages and isotopic geochemistry of benthic foraminifera from core NYA17-154
<p>The dataset contains all the data from cor NYA17-154 presented in Tesi et al. 2021 Science Advances</p> <p><strong>Rapid Atlantification along the Fram Strait at the beginning of the 20<sup>th</sup> century </strong></p> <p>Tesi. Tommaso<sup>1*</sup>, Francesco Muschitiello<sup>2,3*</sup>, Gesine Mollenhauer<sup>4</sup>, Stefano Miserocchi<sup>1</sup>, Leonardo Langone<sup>1</sup>, Chiara Ceccarelli<sup>5</sup>, Giuliana Panieri<sup>6</sup>, Jacopo Chiggiato<sup>7</sup>, Alessio Nogarotto<sup>1,8</sup>, Jens Hefter<sup>4</sup>, Gianmarco Ingrosso<sup>1</sup>, Federico Giglio<sup>1</sup>, Patrizia Giordano<sup>1</sup>, Lucilla Capotondi<sup>7</sup></p> <p>(1) Istituto di Scienze Polari - Consiglio Nazionale delle Ricerche ISP-CNR, 40129 Bologna, Italy</p> <p>(2) Department of Geography - University of Cambridge, Cambridge, CB2 3EN, UK</p> <p>(3) NORCE Norwegian Research Centre, 5007 Bergen, Norway</p> <p> (4) Alfred Wegener Institute - Helmholtz Center for Polar and Marine Sciences, 27570 Bremerhaven, Germany</p> <p>(5) Dipartimento di Scienze Biologiche, Geologiche ed Ambientali – BiGeA, 40126 Bologna, Italy</p> <p>(6) CAGE ‐ Center of Arctic Gas Hydrate, Environment and Climate, Department of Geolosciences, UiT The Arctic University of Norway, Tromsø, Norway</p> <p> (7) Istituto di Scienze Marine - Consiglio Nazionale delle Ricerche ISMAR-CNR, 40129 Bologna, Italy</p> <p>(8) Campus Scientifico, Università Ca’ Foscari Venezia, 30172 Venezia Mestre, Italy</p> <p> </p> <p>The data encompasses:</p> <p>- age-depth model</p> <p>- alkenone derived sea surface temperature</p> <p>- TEX86-L derived water temperature</p> <p>- stable oxygen isotope data of N. labradorica</p> <p>- benthic foraminifera assemblages</p> <p>- retene content</p>
Sr-Nd isotopes and organic geochemistry from IODP Site U1456 in the eastern Arabian Sea since 700 ka
<p>Site U1456 (location: 16°37.28′N, 68°50.33′E; length: 1109.4 m) was drilled at a water depth of 3640 m within the Laxmi Basin in the eastern Arabian Sea duirng International Ocean Discovery Program (IODP) Expedition 355. We here focus on the upper 82.02 m core composite depth below seafloor (CCSF) at Site U1456, deposited since ~700 ka. Sr-Nd isotopic compositions of the clay-sized detrital sediment fractions (12 samples) and concentrations of the total organic carbon (TOC, 101 samples), total nitrogen (TN, 101 samples), and biogenic silica (BSi, 101 samples) were analyzed using a thermal ionization mass spectrometer (Phoenix), a Carlo Erba Elemental Analyzer (1108), a CO2 Coulometer (CM5014), and a wet alkaline extraction method.</p>
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