Expedition 340 summary

,

doi:10.2204/iodp.proc.340.101.2013

Cited by 283 publications

(3 citation statements)

References 79 publications

(155 reference statements)

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“…Both the major (see the "Expedition 340 summary" chapter [Expedition 340 Scientists, 2013a]) and minor element data (Table T1; Figs. F2, F3, F4, F5, F6, F7) show a variety of distributions that are likely influenced by a mixture of reactions that include organic carbon decomposition, carbonate dissolution and precipitation reactions, and volcanogenic sediment diagenesis.…”

Section: Pore Fluidsmentioning

confidence: 99%

Data report: dissolved minor element compositions, sediment major and minor element concentrations, and reactive iron and manganese data from the Lesser Antilles volcanic arc region, IODP Expedition 340 Sites U1394, U1395, U1396, U1399, and U1400

Murray¹,

Muratli²,

Hartwell³

et al. 2016

Proceedings of the IODP

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We measured dithionite-extractable iron and manganese along with a variety of bulk sedimentary solid and dissolved phases to constrain diagenetic reactions occurring within the sediment package of Grenada Basin, which is within the Lesser Antilles volcanic arc region. Core material was obtained during Integrated Ocean Drilling Program Expedition 340. For this report we focus primarily on five sites; three sites are located in the northern portion of the study area off the island of Montserrat (Sites U1394-U1396), and two sites are located farther south off the island of Martinique (Sites U1399 and U1400). Sediments throughout this region include tephra-rich volcanic sands, hemipelagic mud sequences, and carbonate-rich sequences, with widely variable proportions over short (centimeter scale) depth intervals. Regardless of the main sediment type, organic carbon contents are low with average values of 0.19 ± 0.1 wt% at Site U1394, 0.13 ± 0.08 wt% at Site U1395, 0.13 ± 0.06 wt% at Site U1396, 0.28 ± 0.08 wt% at Site U1399, and 0.23 ± 0.15 wt% at Site U1400. Carbonate contents are more variable, ranging between 0 and ~80 wt%, in cores from Sites U1394-U1396 and between 1 and 40 wt% at both Sites U1399 and U1400. These variations in carbonate content likely reflect variable dilution with volcanogenic sediment. Pore fluids reflect a range of diagenetic conditions from oxidizing (sulfate rich) to sulfate-reducing conditions. Reactive major elements (Ca and Mg) as well as a number of minor elements show a range of diagenetic behaviors from reactions likely related to carbonate dissolution or precipitation to exchange reactions between pore fluids and the volcanic-rich sedimentary substrate and clay formation. However, significant site-to-site variability is seen in the diagenetic behavior of these elements. Solid-phase reactive Fe ranges from 0.18 to 0.75 wt% at the northern sites and 0.4 to 1.5 wt% at the southern sites, whereas reactive Mn ranges from 0 to 0.1 wt% in the north and 0 to 0.3 wt% in the south. Sites U1399 and U1400 are located west of the island of Martinique in Grenada Basin in 2900 and 2745 m water depth, respectively (Fig. F1). The lithology of these two sites is similar and is composed of hemipelagic mud, interbedded tephra layers, volcaniclastic turbidites, and deformed sediments (see the "Expedition 340 summary" chapter [Expedition 340 Scientists, 2013a]); Le Friant et al., 2015). Site U1400 is located west of Martinique but closer in proximity to the island than Site U1399 (Fig. F1). Introduction Analytical methods Pore fluid extractionsPore fluids were obtained from all sediment cores presented in this report (Table T1). Sampling occurred every 10 m unless the sediment was unsuitable for pore fluid extraction (i.e., because of sands, debris, or other mission-specific rationales). Sampling procedures are described in detail in the "Methods" chapter (Expedition 340 Scientists, 2013b); however, we present a brief description for completeness. A 10 to 15 cm section of whole-round core was remo...

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Section: Pore Fluidsmentioning

confidence: 99%

Data report: dissolved minor element compositions, sediment major and minor element concentrations, and reactive iron and manganese data from the Lesser Antilles volcanic arc region, IODP Expedition 340 Sites U1394, U1395, U1396, U1399, and U1400

Murray¹,

Muratli²,

Hartwell³

et al. 2016

Proceedings of the IODP

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“…Rear arc sedimentation also has been studied extensively in the Antilles (e.g., Carey & Sigurdsson, 1984;Le Friant et al, 2013;Reid et al, 1996), although mostly in the context of transport from volcanic islands. In the Granada Basin, 30-75 km behind the volcanic front (similar to the position of Site U1437), >75% of sediment in the uppermost 6-8 m of sediment is <63 mm ''hemipelagic clayey volcanic silt'' that is interbedded with coarser turbidites and air fall tephra (Reid et al, 1996).…”

Section: Significance Of the Components 441 The Local Component Anmentioning

confidence: 99%

“…This paper presents information for Site U1437 from Expedition 350 behind the Izu arc front (Tamura et al, 2015). Sites U1396 and U1398 are analogues behind the Antilles arc front (Le Friant et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Tuffaceous Mud is a Volumetrically Important Volcaniclastic Facies of Submarine Arc Volcanism and Record of Climate Change

Gill

Bongiolo

Miyazaki

et al. 2018

Geochem Geophys Geosyst

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The inorganic portion of tuffaceous mud and mudstone in an oceanic island arc can be mostly volcanic in origin. Consequently, a large volume of submarine volcaniclastic material is as extremely fine‐grained as products of subaerial eruptions (<100 µm). Using results of IODP Expedition 350 in the Izu rear arc, we show that such material can accumulate at high rates (12–20 cm/k.y.) within 13 km of the nearest seamount summit and scores of km behind the volcanic front. The geochemistry of bulk, acid‐leached mud, and its discrete vitriclasts, shows that >75% of the mud is volcanic, and that most of it was derived from proximal rear arc volcanic sources. It faithfully preserves integrated igneous geochemical information about arc evolution in much the same way that terrigenous shales track the evolution of continental crust. In addition, their high sedimentation rate enables high resolution study of climate cycles, including the effects of Pleistocene glaciation on the behavior of the Kuroshio Current in the Shikoku Basin south of Japan.

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Geochemistry of Marine Carbonates from Hole 1394, off the Coast of Montserrat, IODP Expedition-340; Implications on Provenance, Paleoenvironment and Lesser Antilles Arc Migration

Subramanyam

Balaram

Manikyamba

et al. 2020

Society of Earth Scientists Series

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Expedition 340 summary

Cited by 283 publications

References 79 publications

Data report: dissolved minor element compositions, sediment major and minor element concentrations, and reactive iron and manganese data from the Lesser Antilles volcanic arc region, IODP Expedition 340 Sites U1394, U1395, U1396, U1399, and U1400

Data report: dissolved minor element compositions, sediment major and minor element concentrations, and reactive iron and manganese data from the Lesser Antilles volcanic arc region, IODP Expedition 340 Sites U1394, U1395, U1396, U1399, and U1400

Tuffaceous Mud is a Volumetrically Important Volcaniclastic Facies of Submarine Arc Volcanism and Record of Climate Change

Geochemistry of Marine Carbonates from Hole 1394, off the Coast of Montserrat, IODP Expedition-340; Implications on Provenance, Paleoenvironment and Lesser Antilles Arc Migration

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