A. Heuser and A. Eisenhauer (in press) A Pilot Study on the Use of Natural Calcium Isotope (44Ca/40Ca) Fractionation in Urine as a Proxy for the Human Body Calcium Balance. Bone
N. Gussone, B. Hönisch, A. Heuser, A. Eisenhauer, M. Spindler and Chr. Hemleben (2009) A critical evaluation of calcium isotope ratios in tests of planktonic foraminifers. Geochimica et Cosmochimica Acta 73, 7241−7255. Abstract
F. Wombacher, A. Eisenhauer, A. Heuser and S. Weyer (2009) Separation of Mg, Ca and Fe from geological reference materials for stable isotope ratio analyses by MC-ICP-MS and double-spike TIMS. Journal of Analytical Atomic Spectrometry, DOI: 10.1039/b820154d .Abstract
A. Heuser and A. Eisenhauer (2008) The Calcium Isotope Composition (δ44/40Ca) of NIST SRM 915b and NIST SRM 1486. Geostandards and Geoanalytical Research 32, 311−315.Abstract
N. Gussone, F. Böhm, A. Eisenhauer, M. Dietzel, A. Heuser, B.M.A. Teichert, J. Reitner, G. Wörheide and W.-C. Dullo (2006) Calcium Isotope Fractionation in Calcite and Aragonite. Geochimica et Cosmochimica Acta 69, 4485−4494. Abstract
A. Heuser, A. Eisenhauer, F. Böhm, K. Wallmann, N. Gussone, P.N. Pearson, Th.F. Nägler and W.-C. Dullo (2005) Calcium Isotope (δ44/40Ca) Variations of Neogene Planktonic Foraminifera. Paleoceanography 20, PA2013, doi:10.1029/2004PA001048. Abstract
N. Gussone, A. Eisenhauer, R. Tiedemann, G.H. Haug, A. Heuser, B. Bock, Th.F: Nägler and A. Müller (2004) Reconstruction of Caribbean Sea surface temperatur and salinity fluctuations in response to the Pliocene closure of the Central American Gateway and radiative forcing, using δ44/40Ca, δ18O and Mg/Ca ratios. Earth and Planetary Science Letters 227, 201−214. Abstract
D. Hippler, A.-D. Schmitt, N. Gussone, A. Heuser, P. Stille, A. Eisenhauer and Th.F. Nägler (2003) Comparison of Ca Isotope Standards and Seawater and a Convenient Way to Relate Ca isotopic data sets. Geostandards Newsletter 27, 13−19. Abstract
N. Gussone, A. Eisenhauer, A. Heuser, M. Dietzel, B. Bock, F. Böhm, H.J. Spero, D.W. Lea, J. Bijma, R. Zeebe and Th.F. Nägler (2003) Model for Kinetic Effects on Calcium Isotope Fractionation (δ44Ca) in Inorganic Aragonite and Cultured Planktonic Foraminifera. Geochimica et Cosmochimica Acta 67, 1375−1382. Abstract
A. Heuser, A. Eisenhauer, N. Gussone, B. Bock, B.T. Hansen and Th.F. Nägler (2002) Measurements of Calcium Isotopes (δ44Ca) Using a TIMS Multicollector Technique. International Journal of Mass Spectrometry 220, 387−399. Abstract
E. Suess, M. Torres, G. Bohrmann, R. W. Collier, D. Rickert, C. Goldfinger, P. Linke, A. Heuser, H. Sahling, K. Heeschen, C. Jung, K.-i. Nakamura, J. Greinert, O. Pfannkuche, A. Trehu, G. Klinkhammer, M. Whiticar, A. Eisenhauer, B. Teichert, and M. Elvert, (2001). Sea floor methane hydrates at Hydrate Ridge, Cascadia Margin, in C. Paull, and W. Dillon, eds., Natural Gas Hydrates: Occurrence, Distribution, and Detection: Geophysical Monograph Series, American Geophysical Union, Monograph Series 124, 87−98.
A. Heuser, T. Tütken, S.J.G. Galer (2009) Calcium Isotopes (δ44/40Ca) of fossil bones and teeth — ontogenetic versus diagenetic origin. 6th Bone Diagenesis Meeting, Bonn
A. Heuser, T. Tütken, S.J.G. Galer (2009) Calcium Isotope Systematics of Dinosaur Teeth. Goldschmidt 2009, Davos
A. Heuser, T. Tütken, N. Gussone, S.J.G. Galer (2008) δ44/40Ca of fossil bones and teeth — ontogenetic versus diagenetic origin. Goldschmidt 2008, Vancouver
A. Eisenhauer, F. Böhm, J. Fietzke, V. Liebetrau, M. Amini, B. Kisakürek, A. Heuser, J. Tang, M. Dietzel (2008) The application of natural divalent cation isotope (δ44/40Ca, δ88/86Sr, δ26Mg) fractionation (dcif) in earth system research Goldschmidt 2008, Vancouver
T. Tütken, A. Heuser, D Herwartz (2008) Fossilisation of bones and teeth − which information is lost, which preserved? Tagung der Paläontologischen Gesellschaft, Erlangen
A. Heuser, A. Eisenhauer, K.E. Scholz-Ahrens, J. Schrezenmeir (2007) Biolgical fractionation of Ca isotopes (δ44/40Ca): A study in Göttingen minipigs. Goldschmidt 2007, Cologne
F. Böhm, M. Amini, J. Blenkinsop, D. Buhl, A. Eisenhauer, J. Farkas, R.V. Geldern, N. Gussone, A. Heuser, A. Munnecke, J. Veizer, S. Voigt, K. Wallman (2007) Calcium Isotope Budget of the Phanerozoic Ocean. Goldschmidt 2007, Cologne
A. Heuser and A. Eisenhauer (2007) From isotope geochemistry to isotope biochemistry: A case study on the use of Calcium isotopes in human urine as an indicator of bone demineralization. EGU Meeting 2007, Vienna
F. Wombacher, A. Eisenhauer, A. Heuser, S. Weyer (2006) Combined chemical separation of Mg, Ca and Fe from geological reference samples for stable isotope determination by MC-ICP-MS and double-spike TIMS. EGU Meeting 2006, Vienna
F. Böhm, A. Eisenhauer, A. Heuser, W. Kiessling, K. Wallmann (2005) Calcium Isotope Fractionation During Dolomitization GeoErlangen 2005, Schriftenreihe Deutsch. Geol. Geowiss. 39, 39.
N. Gussone, F. Böhm, A. Eisenhauer, M. Dietzel, A. Heuser, B.M.A. Teichert, J. Reitner, G. Wörheide , W.-C. Dullo (2005) Calcium isotope fractionation in the calcium carbonate polymorphs calcite and aragonite. EGU Meeting 2005, Vienna.
F. Böhm, A. Eisenhauer, A. Heuser, P.N. Pearson, N. Gussone, T. Nägler, W.-C. Dullo (2004) Correlated trends in Neogene surface ocean calcium isotope and pH records. EGU Meeting 2004, Nice
F. Böhm, A. Eisenhauer, A. Heuser, P.N. Pearson, N. Gussone, T. Nägler, W.-C. Dullo (2003) Covariation of δ44Ca and pH in Ocean Surface Waters during the Neogene EOS Trans. AGU 84(46), Fall Meet. Suppl., Abstract PP21C-1187.
F. Böhm, G. Wörheide, N. Gussone, A. Eisenhauer, A. Heuser, A. Haase-Schramm, J. Vacelet, J. Reitner, W.-C. Dullo (2003) Ca Isotopes from Modern Calcarea and Sclerosponges (Porifera) - Evidence for Different Calcification Mechanisms? Geo 2003 Meeting, Bochum
N. Gussone, A. Eisenhauer, B. Höhnisch, M. Dietzel, J. Bijma, A. Heuser, B. Bock, F. Böhm, H.J. Spero, D.W. Lea, and Th. F. Nägler (2003) Temperature control on Ca isotope fractionation in carbonates and its application in marine geochemistry. Geo 2003 Meeting, Bochum
A. Haase-Schramm, F. Böhm, A. Eisenhauer, N.Gussone, A. Heuser, M. Joachimski, J. Vacelet, J. Reitner, W.-C. Dullo (2003) Application of sclerosponges as proxy recorders. Geo 2003 Meeting, Bochum
F. Böhm, N. Gussone, A. Eisenhauer, A. Heuser, A. Haase-Schramm, J. Vacelet, J. Reitner, W.-C. Dullo (2003) Calcium Isotopic Composition of Marine Biogenic Carbonates: Influences of Mineralogy and Biology. Geophys. Res. Abs. 5, 12938
A. Eisenhauer, F. Böhm, N. Gussone, B. Bock, A. Heuser, W.-C. Dullo (2003) Electrodiffusion: A new Concept for the Calcium Uptake of Foraminifera. Geophys. Res. Abs. 5, 09281
A. Eisenhauer, N. Gussone, A. Heuser, Th.F. Nägler, D. Hippler, H.J. Spero, D.W. Lea, J. Bijma, U. Riebesell, G. Langer (2003) Biochemical Control on Ca-Isotope Fractionation (δ44Ca). Geophys. Res. Abs. 5, 14683
N. Gussone, A. Eisenhauer, G. Haug, R. Tiedemann, A. Heuser, B. Bock, A. Müller, Th.F. Nägler (2003) Caribbean Sea Surface Temperature and Salinity Fluctuations During the Pliocene Closure of the Central American Gateway: A Comparison of Ca Isotope and Mg/Ca-Thermometry. Geophys. Res. Abs. 5, 09491
A. Heuser, A. Eisenhauer, P.N. Pearson, F. Böhm and N. Gussone (2002) A Reconstruction of Seawater δ44Ca from Foraminiferal Records of the Western Equatorial Pacific Ocean. EOS Trans. AGU 83(47), Fall Meet. Suppl., Abstract PP71B-0393
N. Gussone, G. Langer, A. Eisenhauer, A. Heuser, U. Riebesell, F. Böhm (2002) Temperature-Dependent Ca Isotope Fractionation in Calcitic Phyto- and Zooplankton ( Emiliania huxleyi and Orbulina universa). EOS Trans. AGU 83(47), Fall Meet. Suppl., Abstract PP52B-01.
N. Gussone, A. Eisenhauer, M. Dietzel, A. Heuser, H.J. Spero, J. Bijma, F. Böhm, Th.F. Nägler (2002): Model for Kinetic Effects on Ca Isotope Fractionation in Inorganic Aragonite and Cultured Foraminifera ( Orbulina universa and Globigerinoides sacculifer). EGS XXVII General Assembly, Nice, France
F. Böhm, A. Eisenhauer, N. Gussone, A. Heuser, A. Haase-Schramm, M. Dietzel, J. Reitner, J. Vacelet (2002) Fractionation of 44Ca/40Ca between Aragonite and Calcite. Geochim. Cosmochim. Acta Spec. Suppl. 66(15A), A87
A. Eisenhauer, N. Gussone, M. Dietzel, A. Heuser, B. Bock, F. Böhm, H.J. Spero, D.W. Lea, J. Bijma, R. Zeebe and Th.F. Nägler (2002) Kinetic Effects on Calcium Isotope (δ44Ca) Fractionation in Calcium carbonate. Geochim. Cosmochim. Acta Spec. Suppl. 66(15A), A211.
N. Gussone, A. Eisenhauer, G. Haug, R. Tiedemann, A. Müller, A. Heuser, B. Bock, Th.F. Nägler (2002) δ4444, δ18O and Mg/Ca Ratios Reveal Sea Surface Temperature (SST) and Sea Surface Salinity (SSS) Variations During the Emergence of the Central America Isthmus. Geochim. Cosmochim. Acta Spec. Suppl. 66(15A), A299
A. Heuser, A. Eisenhauer, P.N. Pearson, N. Gussone, B. Bock, F. Böhm and Th.F. Nägler (2001) Comparison of δ44Ca Records of Foraminifers From the Indian Ocean and the Western Equatorial Pacific Ocean. EOS Trans. AGU 82(47), Fall Meet. Suppl., Abstract OS31C-0451.
A. Heuser, F. Böhm, A. Eisenhauer, W.-C. Dullo and Leg 183 Shipboard Scientific Party (2001) A Calcium Isotope Record from the Miocene of the Kerguelen Plateau (Southern Indian Ocean) - Global or Local Signal? EOS Trans. AGU 82(20), Spring Meet. Suppl., Abstract OS32A-05/
A. Heuser, A. Eisenhauer, N. Gussone, B. Bock, F. Böhm and Th.F. Nägler (2001) Determination of δ44Ca-ratios on G. bulloides (ODP Leg 183 Site 1138) using a new TIMS multicollector technique. J. Conf. Abstracts 6, 111
G. Wörner, T. Churikova, W. Leeman, V. Liebetrau, S. Tonarini, A. Heuser (2001) Fluid-Mobile Trace Element and U-series Isotope Variations Across Kamchatka: Timing and effects of slab dehydration. Margins Meeting, Kiel.
N. Gussone, G. Haug, R. Tiedemann, A. Heuser, A. Eisenhauer, B. Bock, Th.F. Nägler (2001) Using δ44Ca- and δ18O-Isotopes as Proxies for SST and Salinity Changes During the Closure of the Central American Gateway. J. Conf. Abstracts 6, 111
T. Nägler, A. Eisenhauer, N. Gussone, A. Heuser(2000) δ44Ca-Temperature Calibration on Fossil and Cultured G. sacculifer and SST Reconstruction. EOS Trans. AGU, 81(48) Fall Meet. Suppl., Abstract OS11C-23.
G. Bohrmann, E. Suess, P. Linke, O. Pfannkuche, D. Rickert, C. Jung, H. Sahling, S. Sommer, B. Teichert, A. Heuser, G. Rehder, W. Weinrebe, A. Kopf, M. Torres, R. Collier, K. Heeschen, C. Goldfinger, G. Klinkhammer, A. Trèhu, K. Nakamura (2000): Der Hydratrücken von Oregon: ein akkretionärer Rücken der Cascadia Subduktionszone in dem Gashydrate über vieles bestimmen. Sonne-Status-Seminar, Hannover, 95
D. Rickert, E. Suess, C. Jung, V. Karpen, A. Heuser, G. Bohrmann, B. Teichert, B. Bock (2000): Gashydrate in Sedimenten am südlichen Hydrate Ridge: Geochemische und isotopische Analysen der Gashydrate und Porenwässer. Sonne-Status-Seminar, Hannover,99
D. Rickert, E. Suess, H. Sahling, K. Heeschen, A. Heuser (1999): Gas Venting Environment: Relationship Between Vent Biota and PoreWater Chemistry; Evidence for Nitrate-Storing Sulfur Bacteria and Salt-exclusion Through Gas Hydrate Formation. AGU Fall Meeting, San Francisco
T. Churikova, F. Dorendorf, A. Eisenhauer, A. Heuser, G. Wörner (1997) Across-arc variations in Kamchatka reveal intra-arc rifting and systematic geochemical zonation caused by fluids from the subducted altered crust. Beiheft Eur. J. Mineral. 9, 72.
T. Churikova , F. Dorendorf, A. Eisenhauer, A. Heuser, G. Wörner (1997) Across-Arc Variations in Trace Elements and U/Th Isotopes in Kamchatka Reveal Intra-Arc Rifting and Systematic Geochemical Zonation Caused by Fluids From the Subducted Oceanic Crust. AGU Fall Meeting, EOS Suppl. 78-46, 804
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