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9 results for “Iberian Margin”
Tectono-stratigraphic and thermal evolution of the western Betic flysch: implications for the geodynamics of South Iberian margin and Alboran Domain
<p>Table and Figure from article "<strong>Tectono-stratigraphic and thermal evolution of the western Betic flysch: implications for the geodynamics of South Iberian margin and Alboran Domain" accepted to AGU, Tectonics</strong></p>
Biomarker indices and concentrations and biomarker-based temperature estimates from the Iberian Margin core MD95-2042, composite atmospheric temperature record from Greenland, and stacks of delta 18Oice and atmospheric temperature records from three Antarctic sites
<p>Core MD95-2042 alkenone and GDGT data: This dataset provides the following information for core MD95-2042: depth, age, summed OH-GDGT, iGDGT, and di-unsaturated and tri-unsaturated C<sub>37</sub> alkenone concentrations, OH-GDGT-based, iGDGT-based, and alkenone-based paleothermometric indices, GDGT-2/GDGT-3 ratio, and biomarker-based sea surface temperature (SST) and 0‐ to 200‐m sea temperature (subT; gamma function probability distribution for target temperatures with a = 4.5 and b = 15) estimates. Sediment samples were taken every 5 cm from core MD95-2042 and homogenized before lipid extraction. The lipid extracts were splitted into two fractions: one for alkenone analysis by gas chromatography coupled to a flame ionization detector, and the other for GDGT analysis by high-performance liquid chromatography coupled to mass spectrometry. All GDGT analyses were done in duplicate. The 1σ analytical uncertainties from 37 replicate analyses of the core catcher sample from core MD95-2042 are 0.007 (0.4 °C) for RI-OH, 0.008 (0.2 °C) for RI-OH′, 0.003 (0.2 °C) for TEX<sub>86</sub>, 0.238 for GDGT-2/GDGT-3, and 0.010 (0.26 °C) for U<sup>K′</sup><sub>37</sub>. RI-OH′-SST estimates are from the following global calibration: SST = (RI-OH′ + 0.029)/0.0422 (Fietz et al., 2020). RI-OH-SST estimates are from the following global calibration: SST = (RI-OH − 1.11)/0.018 (Lü et al., 2015). TEX<sub>86</sub><sup>H</sup>-SST estimates are from the following regional paleocalibration: SST = 68.4 × TEX<sub>86</sub><sup>H</sup> + 33.0 (Darfeuil et al., 2016). U<sup>K′</sup><sub>37</sub>-SST estimates are from the following global calibration: SST = 29.876 × U<sup>K′</sup><sub>37</sub> − 1.334 (Conte et al., 2006). Bayesian calibrations were also used for TEX<sub>86</sub>-SST and TEX<sub>86</sub>-subT estimates (BAYSPAR; Tierney & Tingley, 2014, 2015) and for U<sup>K′</sup><sub>37</sub>-SST estimates (BAYSPLINE; Tierney & Tingley, 2018). Alkenone data covering the 160–70 and 70–0 ka BP periods are from Davtian et al. (2021) and Darfeuil et al. (2016), respectively. GDGT data covering the 160–45 ka BP period are from Davtian et al. (2021). The age model of core MD95-2042 for the 160–43 and 43–0 ka BP periods was obtained by tuning to Chinese speleothems (Cheng et al., 2016) and by recalibrating existing <sup>14</sup>C ages with the Marine20 calibration curve (Heaton et al., 2020), respectively. MIS, Marine Isotope Stage; GDGT, glycerol dialkyl glycerol tetraether; and N/A, not available.</p> <p>Greenland atmospheric temperature record: This dataset consists in a composite Greenland atmospheric temperature record, which was built with the following records: the GISP2 atmospheric temperature record by Kobashi et al. (2017) for the 10–0 ka BP period, the NGRIP atmospheric temperature record by Kindler et al. (2014) for the 120–10 ka BP period, and the NEEM atmospheric temperature record by NEEM community members (2013) for the 129–120 ka BP period. The NEEM temperature anomalies obtained by NEEM community members (2013) were shifted by –31 °C to obtain absolute air temperatures. The employed age model is the one of Davtian and Bard (2023) for Greenland and Antarctic ice-core records.</p> <p>Antarctic δ<sup>18</sup>O<sub>ice</sub> and atmospheric temperature stacks: This dataset consists in two stacks of three Antarctic records (EDC, EDML, and WD), one for δ<sup>18</sup>O<sub>ice</sub> and the other for atmospheric temperature: both stacks are provided with their stacking uncertainties. To build the Antarctic δ<sup>18</sup>O<sub>ice</sub> stack, the Antarctic δ<sup>18</sup>O<sub>ice</sub> records were resampled every 10 years before centering to zero means and normalization to unit standard deviations over the 140–0 ka BP period (68–0 ka BP for WD). To optimize the continuity between the portions with and without the WD ice core, the Antarctic δ<sup>18</sup>O<sub>ice</sub> records were centered to zero means over the 68–67 ka BP period. The resulting Antarctic δ<sup>18</sup>O<sub>ice</sub> records were then averaged and stacking uncertainties were calculated as the pooled standard deviation of the stacked Antarctic δ<sup>18</sup>O<sub>ice</sub> records divided by the square root of the number of stacked Antarctic δ<sup>18</sup>O<sub>ice</sub> records. The final Antarctic δ<sup>18</sup>O<sub>ice</sub> stack, expressed in ‰, has the same standard deviation as the δ<sup>18</sup>O<sub>ice</sub> record from EDML over the 140–0 ka BP period, and has a zero mean over the 1–0 ka BP. The Antarctic atmospheric temperature stack was built like the Antarctic δ<sup>18</sup>O<sub>ice</sub> stack, except that the Antarctic δ<sup>18</sup>O<sub>ice</sub> records were corrected for seawater δ<sup>18</sup>O<sub>ice</sub> variations before conversion into atmospheric temperature. The employed age model is the one of Davtian and Bard (2023) for Greenland and Antarctic ice-core records.</p>
FIGURE 4. Necrocarcinus woodwardii Bell, 1863 in New records of Palaeocorystoidea from the Iberian Peninsula and remarks on the taxonomic significance of the posterior margin of Cenomanocarcinus Van Straelen, 1936 and Hasaracancer Jux, 1971 (Decapoda; Brachyura; Cenomanocarcinidae)
FIGURE 4. Necrocarcinus woodwardii Bell, 1863. From dispar Biozone of Xixona Formation (late Albian), Orxeta (Alacant, Spain). A–C MGB 78175. A: dorsal view; B: left lateral view; C: frontal view; C´: close-up of fronto-orbital margin. Scale bar equal to 10 mm.
FIGURE 5 in New records of Palaeocorystoidea from the Iberian Peninsula and remarks on the taxonomic significance of the posterior margin of Cenomanocarcinus Van Straelen, 1936 and Hasaracancer Jux, 1971 (Decapoda; Brachyura; Cenomanocarcinidae)
FIGURE 5. Cenomanocarcinus boedekeri Ossó, Jackson & Vega, 2015 from the Woodbine Formation (middle Cenomanian), Dallas Co. (Texas, USA), holotype NPL 70606, A: dorsal view; A´: close-up of posterolateral corner. Cenomanocarcinus cookseyi Ossó, Jackson & Vega, 2015 from the Walnut Formation (Albian), Georgetown. (Texas, USA), holotype NPL 70604, B: dorsal view; B´: close-up of posterolateral corner. Hasaracancer merijaensis Ossó-Morales, Artal & Vega, 2011, from the Calcaires à slumps de Taghit Formation (late Campanian), Merija (Morocco); Holotype MGSB 75.427, C: dorsal view; C´: close-up of posterolateral and posterior margin. Paratype MGSB 75.428b, D: dorsal view; D´: close-up of posterolateral and posterior margin. AO C448/2, E: dorsal view; E´: close-up of posterolateral and posterior margin. AO C448/1, F: dorsal view; F´: close-up of posterolateral and posterior margin. Hasaracancer cristatus Jux, 1971, from upper Campanian, Afghanistan; holotype GIK 538, G: dorsal view; G´: close-up of posterolateral and posterior margin; G´´: close-up of left lateral margin. Arrows on the close-up pictures (´) showing the rounded posterolateral corner, and the space between the last spines of the ridges and the posterior margin. Scale bar equal to 10 mm. (Photographs of H. cristatus courtesy of Barry Van Bakel).
FIGURE 3 in New records of Palaeocorystoidea from the Iberian Peninsula and remarks on the taxonomic significance of the posterior margin of Cenomanocarcinus Van Straelen, 1936 and Hasaracancer Jux, 1971 (Decapoda; Brachyura; Cenomanocarcinidae)
FIGURE 3. Cenomanocarcinus sp. (sp. 2). From kallesi Biozone, middle Turonian. Trasvía (Cantabria, Spain). A, B: MMC- BIO-CE011240, A: dorsal view of carapace; B: left lateral view of carapace. C: MMC-BIO-CE011241, C: dorsal view of carapace. D, E: MMC-BIO-CE011242, D: inner side of left chela; E: outer side of left chela. F, G: MMC-BIO-CE011243, F: outer side of right chela; G: view of upper margin of right chela. H: MMC-BIO-CE011244, H: outer side of merus. Abbreviations: ebs= epibranchial spines; pebs= post-epibranchial spine; pls= posterolateral spines. Scale bar equal to 10 mm.
FIGURE 2 in New records of Palaeocorystoidea from the Iberian Peninsula and remarks on the taxonomic significance of the posterior margin of Cenomanocarcinus Van Straelen, 1936 and Hasaracancer Jux, 1971 (Decapoda; Brachyura; Cenomanocarcinidae)
FIGURE 2. Cenomanocarcinus sp. (sp. 1), From tardefurcata Biozone of Escucha Formation, early Albian. Traiguera (Castelló, Spain). MGB 78174, dorsal view of carapace. Abbreviations: ebs, epibranchial spines; pebs, post-epibranchial spine. Scale bar equal to 10 mm.
FIGURE 1. Location map. A in New records of Palaeocorystoidea from the Iberian Peninsula and remarks on the taxonomic significance of the posterior margin of Cenomanocarcinus Van Straelen, 1936 and Hasaracancer Jux, 1971 (Decapoda; Brachyura; Cenomanocarcinidae)
FIGURE 1. Location map. A: Cenomanocarcinus (sp. 1) locality, Traiguera (Castelló, Spain). B: Cenomanocarcinus (sp. 2) locality, Trasvía (Cantabria, Spain). C: Necrocarcinus woodwardii Bell, 1863 locality, Orxeta (Alacant, Spain).
Biomarker indices and concentrations and biomarker-based temperature estimates from Iberian Margin cores MD99-2331, MD95-2040 and MD95-2042 (160–45 ka BP)
<p>Biomarker metadata and data for cores MD99-2331, MD95-2040, and MD95-2042: depth, age, summed OH-GDGT, iGDGT, and di-unsaturated and tri-unsaturated C<sub>37</sub> alkenone concentrations, OH-GDGT-based, iGDGT-based, and alkenone-based paleothermometric indices, GDGT 2/GDGT-3 ratio, and biomarker-based sea surface temperature (SST) and 0‐ to 200‐m sea temperature (subT; gamma function probability distribution for target temperatures with a = 4.5 and b = 15) estimates. The 1σ analytical uncertainties are 0.008 (0.5 °C) for RI-OH, 0.007 (0.2 °C) for RI-OH′, 0.003 (0.1 °C) for TEX<sub>86</sub>, 0.263 for GDGT-2/GDGT-3, and 0.010 (0.26 °C) for U<sup>K′</sup><sub>37</sub>. RI-OH′-SST estimates are from the following global calibration: SST = (RI-OH′ + 0.029)/0.0422 (Fietz et al., 2020). RI-OH-SST estimates are from the following global calibration: SST = (RI-OH − 1.11)/0.018 (Lü et al., 2015). TEX<sub>86</sub><sup>H</sup>-SST estimates are from the following regional paleocalibration: SST = 68.4 × TEX<sub>86</sub><sup>H</sup> + 33.0 (Darfeuil et al., 2016). U<sup>K′</sup><sub>37</sub>-SST estimates are from the following global calibration: SST = 29.876 × U<sup>K′</sup><sub>37</sub> − 1.334 (Conte et al., 2006). Bayesian calibrations were also used for TEX<sub>86</sub>-SST and TEX<sub>86</sub>-subT estimates (BAYSPAR; Tierney & Tingley, 2014, 2015) and for U<sup>K′</sup><sub>37</sub>-SST estimates (BAYSPLINE; Tierney & Tingley, 2018). Core MD95-2040 U<sup>K′</sup><sub>37</sub> and summed di-unsaturated and tri-unsaturated C<sub>37</sub> alkenone concentration data are from Pailler and Bard (2002). Core MD95-2042 U<sup>K′</sup><sub>37</sub> and summed di-unsaturated and tri-unsaturated C<sub>37</sub> alkenone concentration data covering the 70–45 ka BP period are from Darfeuil et al. (2016). GDGT data for core MD95-2042 samples with TEX<sub>86</sub> values below 0.4 are deemed anomalous and are thus excluded from any description and analysis. Cmbsf, centimeters below sea floor; MIS, marine isotope stage; DO, Dansgaard–Oeschger event; GS, Greenland stadial; H, Heinrich event; GDGT, glycerol dialkyl glycerol tetraether; and N/A, not available.</p>
Mantle heterogeneity generated by melt depletion and melt-rock interaction: the West Iberian margin peridotites (ODP Legs 149 and 173)
<p>This database contains mineral major and trace element data from the homonymous manuscript of Secchiari et al (submitted to Journal of Petrology). The study is based on IODP material (rock samples) and deals with a petrological and geochemical investigation of mantle samples drilled in the Iberia Abyssal Plain. More specifically the material comes from ODP Leg 149 (Hole 899 B) and Leg 173 (Holes 1068A and 1070A).</p> <p>The folder contains Table 1 and Supplementary Table material (mineral major and trace element data) of the homonymous manuscript of Secchiari et al. submitted to JPET.<br>Mineral major element data were obtained with EMPA, while trace element data were analyzed using LA-ICP-MS. Further details are provided in the related manuscript.<br>The investigated samples are from ODP Holes 899B, 1068A, and 1070A. The geographic coordinates of the Hole locations are provided below:<br>Hole 899B: Lat: 40.766667, Lon: -12.200000<br>Hole 1068A: Lat: 40.683333, Lon: -11.616667<br>Hole 1070A:Lat: 40.800000, Lon: -12.716667<br>Sample location is provided in Table 1.</p> <p> </p> <p><strong>This research was funded by the Italian Ministry of University and Research (MUR) through the grant “ECORD-IODP Italia 2021” attributed to A. Secchiari.</strong></p>
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