AG Petrology of the Ocean Crust

Room 5350

Department of Geosciences
University of Bremen
Klagenfurter Straße 2
28359 Bremen
Germany

Phone: +49 421 218 65404
Fax: +49 421 218 65429
Email: atuerke@uni-bremen.de

Andreas Türke


Dissertation

Microbial life at the glass-palagonite interface

When basalt glass is exposed to oxygenated aqueous solutions, rims of palagonite form along fractures at the expense of glass. The flanks of mid-ocean ridges are the largest reservoir of basalt glass on Earth, and the flow of oxygenated seawater fluxed through these flanks is great. Hence, a large amount of palagonite form in this setting, but palagonitization is kinetically sluggish at the prevailing temperatures in flanks (< 25 °C), allowing chemolithoautotrophic microbes (i.e., those that fix CO2 by using inorganic energy sources of energy and electrons) to catalyze oxidation reactions of ferrous iron for catabolic energy gain. Tubular and granular alteration textures, present in basalt glass samples, both from modern and ancient rocks, are interpreted as trace fossils of endolithic microbes, chemically ‘drilling’ into fresh glass. We analyse alteration textures using geochemical, mineralogical and computer-tomographical methods, trying to unravel their origin, as well as interpreting bioenergetical regimes, created by elemental exchange in low-temperature alteration of basalt glass.



Expeditions

  • SO263: Northern Tonga Arc; Suva (Fidji) - Suva (Fidji)
  • SO253: Kermadec Arc; Nouméa (New Caledonia) - Auckland (New Zealand)
  • PS86 / ARK XXIII-3: Aurora sea mount in the Arctic Ocean at 82°N, 6°W; Tromsø (Norway) - Tromsø



Scientific career

  • 2008 - 2011: Bachelorstudent of Geoscience at the University of Bremen
    • 2011: Bachelor thesis: "Bioalteration of basaltic glasses from DSDP Leg 45 Site 395 Hole 395A from the Mid-Atlantic Ridge"
  • 2011 - 2013: Masterstudent of Marine Geoscience at the University of Bremen
    • 2013: Master thesis: "Change in microbial metabolism in aging ridge flank basement of North Pond, IODP Expedition 336, induced by chemical exchange in low temperature alteration?"
  • 2013 - 2016: Ph.D. student at the research group "Petrology of the Ocean Crust", at the University of Bremen
    • November 2016: Dr. rer. nat. in Geoscience



Publications

  • Türke A, Ménez B, Bach W (2018): Comparing biosignatures in aged basalt glass from North Pond, Mid-Atlantic Ridge and the Louisville Seamount Trail, off New Zealand. PLoS ONE 13(2), e0190053.
    doi:10.1371/journal.pone.0190053 |
  • Jackson MD, Gudmundsson MT, Bach W, Cappelletti P, Coleman NJ, Ivarsson M, Jónasson K, Jørgensen SL, Marteinsson V, McPhie J, Moor JG, Nielson D, Rhodes JM, Rispoli C, Schiffman P, Stefánsson A, Türke A, Vanorio T, Weisenberger TB, White JDL, Zierenberg R, Zimanowski B (2015): Time-lapse characterization of hydrothermal seawater and microbial interactions with basaltic tephra at Surtsey Volcano. Sci. Drill., 3, 1-8.
    doi:10.5194/sd-3-1-2015 |
  • Türke A, Bach W, Nakamura K (2015): Palagonitization of basalt glass in the flanks of mid-ocean ridges: Implications for the bioenergetics of oceanic intracrustal ecosystems. Astrobiology 15(10), 793-803.
    doi:10.1089/ast.2014.1255  |
  • Türke A, Bach W, Mehmood MS (2014): X-ray fluorescence scanning of sediment cores from Holes U1382B, U1383D, U1384A, and 1074A from the North Pond area. Proc. IODP, Exp. 336.
    doi:10.2204/iodp.proc.336.202.2014 |
  • Lazarus D, Barron J, Renaudie J, Diver P, Türke A (2014): Cenozoic planktonic marine diatom diversity and correlation to climate change. PLoS One 9(1), e84857.
    doi:10.1371/journal.pone.0084857 |



Conference Abstracts

  • Dede B, Zitou R, Sander, Thal J, Türke A, Walter M, Amann R, Meyerdierks A (2018): Characterization of the microbial communities in hydrothermal plumes of the Kermadec Arc. ISME, Leipzig, Germany (Poster).
  • Neuholz R, Schnetger B, Walker SL, Walter M, Türke A, Brumsack H-J (2018): The Use of Short-Lived Radium Isotopes at Submarine Hydrothermal VentsThe Use of Short-Lived Radium Isotopes at Submarine Hydrothermal Vents. Goldschmidt Conference, Boston, United States (Poster).
  • Türke A, Ménez B & Bach W (2018): Comparing Biosignatures in Aged Basalt Glass from North Pond, Mid-Atlantic Ridge and the Louisville Seamount Trail, off New Zealand. Goldschmidt Conference, Boston, United States.
  • Jackson MD, Gudmundsson MT, Bach W, Türke A, Jørgensen S, Weisenberger T, Couper S, Lippert P, Marteinsson VÞ, Stefánsson A, Zimanowsk B, Capelletti P (2018): ICDP SUSTAIN drilling at Surtsey Volcano: A time-lapse drill core record and hydrothermal borehole observatory in basalt 50 years after eruption. EGU Meeting 2018, Vienna, Austria.
  • Türke A (2018): Subsurface Observatory at Surtsey, SUSTAIN Drilling Project. IODP/ICDP Colloquium, Bochum, Germany (Talk).
  • Kahl W-A, Türke A, Bach W (2017): Assessing microbial, mineralogical, and hydrothermal processes in the ICDP borehole on Surtsey: a combined observatory and experimental approach. GeoBremen 2017, Bremen, Germany (Poster).
  • Türke A, Bach W, Köhler J, Mertens C, Walter M (2017): Dissolved-particulate exchange in the proximal hydrothermal plume at the Aurora vent field, Gakkel Ridge, Arctic Ocean. GeoBremen 2017, Bremen, Germany.
  • Marcon Y, Purser A, Diehl A, Albers E, Türke A, McDermott J, German C, Hand K, Schlindwein V, Dorschel B, Wegener G, Boetius A, Bach W (2017): Geological settings of hydrothermal vents at 6°15’W and 55°30’E on the Gakkel Ridge, Arctic Ocean. Goldschmidt Conference 2017, Paris, France (Poster).
  • Türke A, Bach W, Boetius A, Diehl A, German C, Köhler J, Mertens C, Monien P, Prause S, Sueltenfuss J (2017): Dissolved-particulate exchange in the proximal hydrothermal plume at the Aurora Vent Field, Gakkel Ridge, Arctic Ocean. Goldschmidt Conference 2017, Paris, France (Poster).
  • Bach W, Kahl W-A, Türke A (2017): Rates and processes of tephra alteration in Surtsey volcano: a combined observational and experimental approach. IODP/ICDP Kolloquium, Braunschweig, Germany (Poster).
  • Türke A, Ménez B, Bach W (2016): Comparing biosignatures from North Pond, Mid-Atlantic Ridge and the Louisville Seamount Chain, off New Zealand. IODP/ICDP Kolloquium, Heidelberg, Germany (Poster).
  • Türke A, Ménez B, Bach W (2016): Comparing biosignatures from North Pond, Mid-Atlantic Ridge and the Louisville Seamount Chain, off New Zealand. EGU Meeting 2016, Vienna, Austria (Poster).
  • Türke A, Bach W, Nakamura K (2015): Palagonitization of basalt glass in the flanks of mid-ocean ridges: implications for bioenergetics of oceanic intracrustal ecosystems. Goldschmidt Conference 2015, Prague, Czech Republic (Poster).
  • Bach W, Rouxel O, Nakamura K, Türke A, Klügel A (2015): A geochemical budget of 8 Myrs of oxidative ocean basement alteration. Goldschmidt Conference 2015, Prague, Czech Republic (Poster).
  • Türke A, Bach W (2015): Palagonitization of basalt glass in the flanks of mid-ocean ridges: implications for bioenergetics of oceanic intracrustal ecosystems. Joint IODP/ICDP colloquium, Bonn, Germany (Poster).
  • Boetius A, Bach W, Borowski C, Diehl A, German CR, Kaul NE, Koehler J, Marcon Y, Mertens C, Molari M, Schlindwein VSN, Türke A, Wegener G, and Science Party of RV POLARSTERN Expedition Aurora PS86 (2014): Exploring the habitability of Ice-covered waterworlds: The deep-sea hydrothermal system of the Aurora Mount at Gakkel Ridge, Arctic Ocean (82°54’ N, 6°15W, 3900 m). American Geoscience Union, Fall Meeting 2014, San Francisco, United States.
  • Türke A, Bach W (2014): Microbial life at the glass-palagonite interface. ICDP-Workshop, Surtsey, Iceland (Poster).
  • Türke A, Bach W, Klügel A (2014): Hydrogen production by radiolysis in ridge flank systems: an experimental approach. DMG-Meeting, Hanover, Germany.
  • Türke A, Bach W, Kahl W-A, Klügel A (2014): Palagonitization of basalt glass in the flanks of mid-ocean ridges: impications for bioenergetics of oceanic intracrustal ecosystems. 4th Nordic Astrobiology Conference, Bergen, Norway.
  • Bach W, Kahl W-A, Jöns N, Türke A, Plümper, O (2013): Rocky Constraints on Catabolic Energy Supply in the Subseafloor. Goldschmidt Conference 2013, Florence, Italy.
  • Türke A, Bach W, Kahl W-A, Klügel A (2013): Palagonitization of basalt glass in the flanks of mid-ocean ridges: impications for bioenergetics of oceanic intracrustal ecosystem. DMG/GV Meeting, Tubingen, Germany.
  • Türke A (2011): Bioalteration basaltischer Gläser vom Mittelatlantischen Rücken. Section Meeting DMG Petrology and Petrophysics, Bochum, Germany.