 | Zhang, Chao, Wang, Lian-Xun, Marks, Michael A.W., France, Lydéric, Koepke, Juergen (2017) Volatiles (CO 2 , S, F, Cl, Br) in the dike-gabbro transition zone at IODP Hole 1256D: Magmatic imprint versus hydrothermal influence at fast-spreading mid-ocean ridge. Chemical Geology, 459. 43-60 doi:10.1016/j.chemgeo.2017.04.002 | Journal (article/letter/editorial) | | at IODP Hole 1256D: Magmatic imprint versus hydrothermal influence at fast-spreading mid-ocean ridge ...at IODP Hole 1256D: Magmatic imprint versus hydrothermal influence at fastspreading mid-ocean ridge. The...at IODP Hole 1256D: Magmatic imprint versus hydrothermal influence at fast-spreading mid-ocean ridge Chao...ABSTRACT The dike-gabbro transition zone of mid-ocean ridges (MORs) is a critical site for the ED accretion...were recently sampled by the IODP (Integrated AC Ocean Drilling Program) at Site 1256, representing parts |  | | Journal (article/letter/editorial) | | Halogens in altered ocean crust from the East Pacific Rise (ODP/IODP Hole 1256D) M.A. Kendrick PII: DOI:...Halogens in altered ocean crust from the East Pacific Rise (ODP/IODP Hole 1256D), Geochimica et Cosmochimica... Halogens in altered ocean crust from the East Pacific Rise (ODP/IODP Hole 1256D) M.A. Kendrick Research...750-1450 mbsf in the International Ocean Discovery Project (IODP) Hole 1256D. Whole rock analyses of halogens...the ocean crust and the mineral controls on the abundances of all four halogens in altered ocean crust |  | | Journal (article/letter/editorial) | | oceanic crust is not well known. Ocean Drilling Program (ODP) Hole 1256D penetrates a complete in situ section...Stockholm University, Stockholm SE-106 91, Sweden 2 Ocean and Earth Science, National Oceanography Centre...Volcanic massive sulphide . Au-rich VMS . ODP Hole 1256D . Hydrothermal alteration . Oceanic crust Introduction...example, Ocean Drilling Program (ODP) drill cores from holes 1256D and 504B in the Pacific Ocean show that...alteration of ODP Hole 504B in the Nazca plate. However, a similar study from ODP Hole 504B but using a |  | Zhang, Chao, Koepke, Juergen, Albrecht, Moritz, Horn, Ingo, Holtz, Francois (2017) Apatite in the dike-gabbro transition zone of mid-ocean ridge: Evidence for brine assimilation by axial melt lens. American Mineralogist, 102 (3) 558-570 doi:10.2138/am-2017-5906 | Journal (article/letter/editorial) | | Apatite in the dike-gabbro transition zone of mid-ocean ridge: Evidence for brine assimilation by axial...mid-ocean ridge, which was formed at the East Pacific Rise and recently drilled by IODP Hole 1256D. These...Apatite, mid-ocean ridge, axial melt lens, brine, chlorine, IODP Introduction At mid-ocean ridges (MORs)...magmatic amphiboles in gabbros at Hess Deep (East Pacific Rise, fast-spreading ridge) are >10 times higher...2003). The Integrated Ocean Drilling Program (IODP) Hole 1256D at the East Pacific Rise, for the first time |  | | Journal (article/letter/editorial) | | alteration of the oceanic crust: insights from IODP site 1256D C Patten, IK Pitcairn, DA Teagle, M Harris PII:...alteration of the oceanic crust: insights from IODP site 1256D, Geochimica et Cosmochimica Acta (2016), doi: http://dx...alteration of the oceanic crust: insights from IODP site 1256D Patten C*1, Pitcairn IK1, Teagle DA2, Harris M3...Stockholm University, Stockholm, Sweden 2 School of Ocean and Earth Science, National Oceanography Centre...including buffering of the compositions of the ocean and lithosphere, supporting microbial life and the |  | Satsukawa, T., Ildefonse, B., Mainprice, D., Morales, L. F. G., Michibayashi, K., Barou, F. (2013) A database of plagioclase crystal preferred orientations (CPO) and microstructures – implications for CPO origin, strength, symmetry and seismic anisotropy in gabbroic rocks. Solid Earth, 4 (2). 511-542 doi:10.5194/se-4-511-2013 | Journal (article/letter/editorial) | | dominantly from slow- and fast-spread present-day ocean crust, as well as from the Oman ophiolite. Plagioclase...regardless of its crystal symmetry. Problems to indexing albite have been reported (Prior and Wheeler, 1999; Jiang...present-day ocean crust (54 %), or former ocean crust in the Oman ophiolite (25 %). 2.1 Fast-spread ocean crust...and in present-day ocean crust in the Hess Deep rift valley and in ODP Hole 1256D. Although the precise...still a matter of debate, the nearly continuous ocean crust present in this ophiolite makes it a classical |  | Shilobreeva, S., Martinez, I., Busigny, V., Agrinier, P., Laverne, C. (2011) Insights into C and H storage in the altered oceanic crust: Results from ODP/IODP Hole 1256D. Geochimica et Cosmochimica Acta, 75 (9) 2237-2255 doi:10.1016/j.gca.2010.11.027 | Journal (article/letter/editorial) | | altered oceanic crust: Results from ODP/IODP Hole 1256D S. Shilobreeva a,b, I. Martinez a,⇑, V. Busigny...from altered oceanic crust cored in ODP/IODP Hole 1256D through lavas, dikes down to the gabbroic rocks...cored in Ocean Drilling Program/Integrated Ocean Drilling Program (ODP/IODP) Hole 1256D. Hole 1256D is quite...quite unique since it is the first drill hole to penetrate a continuous section into the deepest part of...SAMPLING 2.1. Geological setting Ocean Drilling Program Hole 1256D (6°44.20 N, 91°56.10 W) is located |  | Yu, Hui-Min, Li, Yuan-Hong, Gao, Yong-Jun, Huang, Jian, Huang, Fang (2018) Silicon isotopic compositions of altered oceanic crust: Implications for Si isotope heterogeneity in the mantle. Chemical Geology, 479. 1-9 doi:10.1016/j.chemgeo.2017.12.013 | Journal (article/letter/editorial) | | oceanic crust recovered from IODP Site 1256, East Pacific Rise to investigate the behavior of Si isotopes...mantle, which could contribute to the source of ocean island basalts with low δ30Si. Keywords: Silicon...samples recovered from IODP Site 1256 at the East Pacific Rise (EPR). From top to bottom, these samples have...1256 has two drilling holes, RI 1256C and 1256D. Hole 1256C cored the uppermost lavas, including a...basement section (Fig. 1; Wilson et al., 2003). Hole 1256D is ~30 m south of 1256C and starts at 276 m below |  | Fischer, Lennart A., Erdmann, Martin, France, Lydéric, Wolff, Paul E., Deloule, Etienne, Zhang, Chao, Godard, Marguerite, Koepke, Jürgen (2016) Trace element evidence for anatexis at oceanic magma chamber roofs and the role of partial melts for contamination of fresh MORB. Lithos, 260. 1-8 doi:10.1016/j.lithos.2016.05.001 | Journal (article/letter/editorial) | | Partial melting TE Keywords Fast-spreading mid-ocean ridge AC Oceanic plagiogranite Granoblastic hornfels...at Integrated Ocean Drilling Program SC R (IODP) Site 1256 (equatorial Eastern Pacific) is interpreted...roof of the magma chambers from fast-spreading mid-ocean ridges. Moreover, calculations of mixing and assimilation...al., 2007; Rollinson, 2009). They typically bear albite-rich plagioclase, quartz, and amphibole and have...oceanic crust was formed at the equatorial East Pacific Rise (EPR) about 15 Myr ago during a period MA |  | Erdmann, Martin, Fischer, Lennart A., France, Lydéric, Zhang, Chao, Godard, Marguerite, Koepke, Jürgen (2015) Anatexis at the roof of an oceanic magma chamber at IODP Site 1256 (equatorial Pacific): an experimental study. Contributions to Mineralogy and Petrology, 169 (4) doi:10.1007/s00410-015-1136-5 | Journal (article/letter/editorial) | | oceanic magma chamber at IODP Site 1256 (equatorial Pacific): an experimental study Martin Erdmann1,2 · Lennart...Integrated Ocean Drilling Program Expeditions 309, 312, and 335 at Site 1256 (eastern equatorial Pacific) sampled...petrology · Partial melting · Fast-spreading mid-ocean ridge · Oceanic plagiogranite · Granoblastic hornfels...overlying axial melt lens (AML) at fast-spreading mid-ocean ridges have major influences on the composition...assumed to be the place where the main stage of mid-ocean ridge basalt (MORB) differentiation occurs. The |  | Patten, C. G. C., Pitcairn, I. K., Alt, J. C., Zack, T., Lahaye, Y., Teagle, D. A. H., Markdahl, K. (2020) Metal fluxes during magmatic degassing in the oceanic crust: sulfide mineralisation at ODP site 786B, Izu-Bonin forearc. Mineralium Deposita, 55 (3) 469-489 doi:10.1007/s00126-019-00900-9 | Journal (article/letter/editorial) | | between different tectonic settings. Ocean Drilling Program Hole 786B recovered > 800 m of upper oceanic...depletion in the melt. Comparison of Ocean Drilling Program Hole 786B with volcanogenic massive sulfide...Sciences, University of Michigan, Ann Arbor, USA 7 Ocean and Earth Science, National Oceanography Centre...variable metal budgets in VMS deposits. Ocean Drilling Program (ODP) Hole 786B in the Izu-Bonin forearc is one...815–820 m below seafloor (mbsf) near the bottom of the hole contains abundant pyrite, chlorite and sericite |  | France, Lydéric, Koepke, Juergen, Ildefonse, Benoit, Cichy, Sarah B., Deschamps, Fabien (2010) Hydrous partial melting in the sheeted dike complex at fast spreading ridges: experimental and natural observations. Contributions to Mineralogy and Petrology, 160 (5) 683-704 doi:10.1007/s00410-010-0502-6 | Journal (article/letter/editorial) | | clinopyroxene is also elaborated. Keywords Mid-ocean ridge Axial magma chamber Hydrothermal system...ophiolite, and in IODP (Integrated Ocean Drilling Program) Hole 1256D. They describe typical granoblastic...zone in the Oman ophiolite with the recent IODP Hole 1256D and propose a dynamic model with upand downward...sheeted dike rocks sampled at ODP/IODP Hole 1256D and ODP Hole 504B, at Hess Deep, and at the Blanco Depression...from IODP Hole 1256D in the Cocos plate (Teagle et al. 2006), from Hess Deep (East Pacific Rise [EPR]; Pollock |  | Harris, Michelle, Coggon, Rosalind M., Wood, Martin, Smith-Duque, Christopher E., Henstock, Timothy J., Teagle, Damon A.H. (2017) Hydrothermal cooling of the ocean crust: Insights from ODP Hole 1256D. Earth and Planetary Science Letters, 462. 110-121 doi:10.1016/j.epsl.2017.01.010 | Journal (article/letter/editorial) | | Hydrothermal cooling of the ocean crust: Insights from ODP Hole 1256D Michelle Harris a,b,∗ , Rosalind...Timothy J. Henstock a , Damon A.H. Teagle a a b Ocean and Earth Science, National Oceanography Centre...Keywords: ocean crust hydrothermal Sr isotopes heat flux a b s t r a c t The formation of new ocean crust...crust at mid-ocean ridges is a fundamental component of the plate tectonic cycle and involves substantial...from the mantle. Hydrothermal circulation at mid-ocean ridges is critical for the advection of latent and |  | Harris, Michelle, Coggon, Rosalind M., Smith-Duque, Christopher E., Cooper, Matthew J., Milton, James A., Teagle, Damon A.H. (2015) Channelling of hydrothermal fluids during the accretion and evolution of the upper oceanic crust: Sr isotope evidence from ODP Hole 1256D. Earth and Planetary Science Letters, 416. 56-66 doi:10.1016/j.epsl.2015.01.042 | Journal (article/letter/editorial) | | upper oceanic crust: Sr isotope evidence from ODP Hole 1256D Michelle Harris ∗ , Rosalind M. Coggon, Christopher...Matthew J. Cooper, James A. Milton, Damon A.H. Teagle Ocean and Earth Science, National Oceanography Centre...February 2015 Editor: T. Elliott Keywords: mid-ocean ridge IODP hydrothermal circulation fluid–rock reaction...isotopes fluid channelling a b s t r a c t ODP Hole 1256D in the eastern equatorial Pacific is the first...penetration of a complete section of fast spread ocean crust down to the dike–gabbro transition, and only |  | Shibuya, Takazo, Komiya, Tsuyoshi, Anma, Ryo, Ota, Tsutomu, Omori, Soichi, Kon, Yoshiaki, Yamamoto, Shinji, Maruyama, Shigenori (2007) Progressive metamorphism of the Taitao ophiolite; evidence for axial and off-axis hydrothermal alterations. Lithos, 98 (1) 233-260 doi:10.1016/j.lithos.2007.04.003 | Journal (article/letter/editorial) | | was due to axial hydrothermal alteration at a mid-ocean ridge. Mineral assemblages and the compositions...Comparison between the Taitao ophiolite with its mid-ocean ridge (MOR) affinity, and other ophiolites and MOR...Ophiolite; Hydrothermal metamorphism; Taitao; Mid-ocean ridge system 1. Introduction ⁎ Corresponding author...reserved. doi:10.1016/j.lithos.2007.04.003 Mid-ocean ridges are places where interactions between seawater...diverse biological communities in otherwise barren ocean floor settings, and are candidates for the birthplace |  | Beier, Christoph, Bach, Wolfgang, Busch, Alexander V., Genske, Felix S., Hübscher, Christian, Krumm, Stefan H. (2019) Extreme intensity of fluid-rock interaction during extensive intraplate volcanism. Geochimica et Cosmochimica Acta, 257. 26-48 doi:10.1016/j.gca.2019.04.017 | Journal (article/letter/editorial) | | that is less enriched than the source that gives rise to the islands today. The extents of melting today...province; Azores Plateau; water-rock reactions; ocean-crust exchange INTRODUCTION The emplacement, formation...between crust and convecting seawater similar to mid-ocean ridges (Alt, 1997; Alt et al., 1986; Alt et al....plateaus drilled during Ocean Drilling Program (ODP) and International Ocean Drilling Program (IODP)...stratigraphic section an endmember amongst altered ocean crust globally. The samples are exclusively altered |  | Müller, T., Koepke, J., Garbe-Schönberg, C.-D., Dietrich, M., Bauer, U., Wolff, P.E. (2017) Anatomy of a frozen axial melt lens from a fast-spreading paleo-ridge (Wadi Gideah, Oman ophiolite) Lithos, 272. 31-45 doi:10.1016/j.lithos.2016.11.022 | Journal (article/letter/editorial) | | uni-hannover.de TE D Abstract At fast-spreading mid-ocean ridges, axial melt lenses (AMLs) sandwiched between...by the Integrated Ocean Drilling Program (IODP) in the equatorial Eastern Pacific, our results based...AML in the midcrust beneath fast-spreading mid ocean ridges (MORs), which is underlain by crystal melt...drilled by the IODP at Site 1256 (Eastern Equatorial Pacific) and the Samail ophiolite in the Sultanate of Oman...and petrographic features well-known from IODP Hole 1256D. In contrast to the 1-D drilling at Site 1256 |  | Dziony, Wanja, Horn, Ingo, Lattard, Dominique, Koepke, Jürgen, Steinhoefel, Grit, Schuessler, Jan A., Holtz, François (2014) In-situ Fe isotope ratio determination in Fe–Ti oxides and sulfides from drilled gabbros and basalt from the IODP Hole 1256D in the eastern equatorial Pacific. Chemical Geology, 363. 101-113 doi:10.1016/j.chemgeo.2013.10.035 | Journal (article/letter/editorial) | | from drilled gabbros and basalt from the IODP Hole 1256D in the eastern equatorial Pacific Wanja Dziony...Mezger Keywords: Fe-isotopes Laser ablation IODP Mid-ocean ridge Hydrothermal alteration Fe–Ti-oxides a b...from IODP Hole 1256D (eastern equatorial Pacific; 15 Ma crust formed at the East Pacific Rise). Most igneous...isotope compositions of hot fluids (N 300 °C) from mid-ocean-ridge spreading centers define a narrow range that...The overall observed scale of δ56Femagnetite in 1256D rocks ranges from − 0.12 to +0.64‰, and of δ56Feilmenite |  | | Journal (article/letter/editorial) | | are higher than estimates from ODP Hole 504B and IODP Hole 1256D, but are consistent with values inferred...inferred from vent fluids from 21° and 13°N on the East Pacific Rise (Albarède et al., 1981; Michard et al., 1984;...1. Introduction Hydrothermal circulation at mid-ocean ridges modifies the thermal and igneous structures...at: Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550, USA. E-mail address:...implications for hydrothermal circulation through the mid-ocean ridges. The extent of alteration and isotopic exchange |  | | Journal (article/letter/editorial) | | higher primary Au concentrations compared to mid-ocean ridge basalts (MORB; Bierlein and Pisarevsky 2008;...belt to upper greenschist facies (biotite–garnet–albite) in the centre of the belt (Fig. 1), equivalent...Chlorite Zone Biot Chl P-A P-P Biotite-Garnet-Albite Zone P AL Biotite Zone Garnet Zone Lake Hawea...dominantly plotting in a large cluster that overlaps the Ocean Island Basalt (OIB) and MORB fields (Fig. 5b). The...well-known. Samples from Integrated Ocean Drilling Project (IODP) Hole 504B have been analysed for Au in |  | Huang, Jian, Ke, Shan, Gao, Yongjun, Xiao, Yilin, Li, Shuguang (2015) Magnesium isotopic compositions of altered oceanic basalts and gabbros from IODP site 1256 at the East Pacific Rise. Lithos, 231. 53-61 doi:10.1016/j.lithos.2015.06.009 | Journal (article/letter/editorial) | | basalts and gabbros from IODP site 1256 at the East Pacific Rise Jian Huang a,⁎, Shan Ke b,⁎, Yongjun Gao c...represent the carbonate-barren AOC formed at the East Pacific Rise (EPR). These samples were altered by interaction...that the Mg isotope ratios are fractionated in the ocean (Tipper et al., 2006a). The former hypothesis is...latter is in agreement with Mg uptake from the ocean by marine dolomite precipitation and hydrothermal...estimates of the hydrothermal sink of Mg at mid-ocean ridges vary from 61% to 100% (Beinlich et al., 2014; |  | | Journal (article/letter/editorial) | | spread from the East Pacific Ocean (ODP Hole 1256D), the Atlantic Ocean (ODP Hole 920D, DSDP Hole 543A, ODP...ODP Hole 1271/1274) and the Southwest Indian Ocean (ODP Hole 735B). Other sites involved in the carbon budget...Sea Drilling Project), ODP (Ocean Drilling Program) and IODP (Integrated Ocean Drilling Program and lately...lately International Ocean Discovery Program) drillings, numerous studies have shown that carbonate minerals...lava) are from the ∼15 Ma sequence sampled by ODP Hole 1256D and show pervasive dark gray background alteration |  | | Journal (article/letter/editorial) | | Geological Sciences, Stockholm University, Sweden 7 2 Ocean and Earth Science, National Oceanography Centre...oceanic crust, such as Ocean Drilling Program (ODP) Hole 504B and Hole 1256D (e.g. 47 Alt et al.,...Mediterranean basin during the closure of the 104 Tethys Ocean (Robertson, 1987; Garfunkel, 1998) and is a segment...partially to completely altered to 151 amphibole, albite, and chlorite, with minor quartz, epidote, titanite...encountered and depletions do not exceed 50 % (ODP Hole 1256D, Patten et al., 2015). Although 537 mass variation |  | Currin, Adriana, Wolff, Paul Eric, Koepke, Juergen, Almeev, Renat R., Zhang, Chao, Zihlmann, Barbara, Ildefonse, Benoit, Teagle, Damon A.H. (2018) Chlorine-rich amphibole in deep layered gabbros as evidence for brine/rock interaction in the lower oceanic crust: A case study from the Wadi Wariyah, Samail Ophiolite, Sultanate of Oman. Lithos, 323. 125-136 doi:10.1016/j.lithos.2018.09.015 | Journal (article/letter/editorial) | | Benoit Ildefonsec, Damon A.H. Teagleb Germany Ocean and Earth Science, National Oceanography Centre...genesis and hydrothermal alteration at IP mid-ocean ridges, and are major contributors to heat and mass...upper oceanic AN crust of fast-spreading mid-ocean ridges, but probably reaches beyond the sheeted...following natural and synthetic standards: AC albite (Na), wollastonite (Ca and Si), orthoclase (K)...from the Oman ophiolite. Geology 39, 391-394. IP Hole 735B. Geochemstry, Geophysics, Geosystems, 7 (12) |  | | Journal (article/letter/editorial) | | hydrothermal processes in the lower ocean crust at and near the East Pacific Rise Timo M. Kirchner • Kathryn M...are part of a contiguous section of young East Pacific Rise (EPR) crust at the Hess Deep Rift provide...their own at Hess and Pito Deeps, and Ocean Drilling Program Hole 504B. Alteration patterns within the...and near fast-spreading ridges. Keywords East Pacific Rise Gabbros Hydrothermal systems Sr isotopes...Kirchner K. M. Gillis (&) School of Earth and Ocean Sciences, University of Victoria, PO Box 3065 STN |
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