Výsledky vyhledávání - "Konrad Hammerschmidt"

Tracking the incidence of excess argon in white mica Ar–Ar data from UHP conditions to upper crustal levels in the Dora-Maira Massif, Western Alps

Autor: Konrad Hammerschmidt, Hans-Peter Schertl

Publikováno v: European Journal of Mineralogy. 28:1255-1275

The age of peak-metamorphic conditions of the ultrahigh-pressure ( UHP ) metamorphic rock sequence constituting the Dora-Maira Massif is well established at 35 Ma. In order to understand the behaviour of excess argon during sequential pressure–temp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f9836c45aeb82c3365a1775969fd95a2
https://doi.org/10.1127/ejm/2016/0028-2613

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Relating collisional kinematics to exhumation processes in the Eastern Alps

Autor: Claudio Rosenberg, Konrad Hammerschmidt, Jean-Pierre Brun, Susanne Schneider, Andreas Scharf, Alain Rabaute, A. Bertrand

Publikováno v: Earth-Science Reviews
Earth-Science Reviews, Elsevier, 2018, 176, pp.311-344. ⟨10.1016/j.earscirev.2017.10.013⟩
Earth-Science Reviews, 2018, 176, pp.311-344. ⟨10.1016/j.earscirev.2017.10.013⟩

International audience; Based on a review of the surface and deep structure of the Eastern Alps, we link the timing and the inferred displacement fields to exhumation of upper and lower crustal units of the orogenic nappe stack during collision. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00d6a60f293b403cc9c87f2878ad4704
https://hal-insu.archives-ouvertes.fr/insu-01632819/document

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Helium isotopes in Dead Sea Transform waters

Autor: Hans Friedrichsen, Abraham Starinsky, Zvi Garfunkel, Konrad Hammerschmidt, Adi Torfstein, Yehoshua Kolodny

Publikováno v: Chemical Geology. 352:188-201

The concentrations and isotopic compositions of helium, and relative abundances of CO2, were studied in brines and freshwater springs, groundwater wells, and gas bubbles, in and around the Dead Sea Transform (DST) fault system. The latter forms part

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd0f4da1e9801fa6c310ff88a09d51bb
https://doi.org/10.1016/j.chemgeo.2013.06.008

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Dating the longevity of ductile shear zones: Insight from 40Ar/39Ar in situ analyses

Autor: Konrad Hammerschmidt, Susanne Schneider, Claudio Rosenberg

Publikováno v: Earth and Planetary Science Letters
Earth and Planetary Science Letters, Elsevier, 2013, 369-370, pp.43-58. ⟨10.1016/j.epsl.2013.03.002⟩
Earth and Planetary Science Letters, 2013, 369-370, pp.43-58. ⟨10.1016/j.epsl.2013.03.002⟩

International audience; We attempt to improve temporal constraints on the longevity and the termination of ductile shear zones by performing texturally-controlled in situ 40Ar/39Ar analyses of pre-kinematic muscovite, biotite and K-feldspars, of syn-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbb2c9c70c173b6e64df187b8c575a88
https://doi.org/10.1016/j.epsl.2013.03.002

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Grain-size effects on the closure temperature of white mica in a crustal-scale extensional shear - zone - Implications of in-situ Ar-40/Ar-39 laser-ablation of white mica for dating shearing and cooling (Tauern Window, Eastern Alps)

Autor: S. Favaro, Konrad Hammerschmidt, Ralf Schuster, Stefan M. Schmid, Andreas Scharf, Masafumi Sudo, Mark R. Handy

In-situ Ar-40/Ar-39 laser ablation dating of white-mica grains was performed on samples from the footwall of a crustal-scale extensional fault (Katschberg Normal Fault; KNF) that accommodated eastward orogen-parallel displacement of Alpine orogenic c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a135cc634473cabb09798247078586f
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/45442

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Highly siderophile elements and Sr–Nd isotopes in refertilized mantle peridotites — A case study from the Totalp ultramafic body, Swiss Alps

Autor: David van Acken, Richard J. Walker, Konrad Hammerschmidt, Harry Becker, Frank Wombacher

Publikováno v: Chemical Geology. 276:257-268

Understanding the redistribution of highly siderophile elements (HSE) in mantle peridotites during melting and melt transport is crucial for interpreting HSE data and Os isotopes in terms of the chemical and isotopic evolution of the mantle, core for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::38525aa20b7e951aad66434bd9bb8c71
https://doi.org/10.1016/j.chemgeo.2010.06.011

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U-Pb ages of apatite in the western Tauern Window (Eastern Alps): Tracing the onset of collision-related exhumation in the European plate

Autor: Audrey Bertrand, Dirk Frei, Konrad Hammerschmidt, Axel Gerdes, Susanne Schneider, Claudio Rosenberg

Publikováno v: Earth and Planetary Science Letters
Earth and Planetary Science Letters, Elsevier, 2015, 418, pp.53-65. ⟨10.1016/j.epsl.2015.02.020⟩
Earth and Planetary Science Letters, 2015, 418, pp.53-65. ⟨10.1016/j.epsl.2015.02.020⟩

International audience; We performed single spot U-Pb analyses of zircons and apatites from eighteen samples distributed along three sections crossing the western Tauern Window (Eastern Alps). Zircon analyses yield concordant ages of similar to 295 M

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1d0280c6094c723f073dc58c244e6e4
https://hal.archives-ouvertes.fr/hal-01415714

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Autor: Gerhard Franz, Konrad Hammerschmidt, Gesine Steiner, Dieter Pudlo, Frank Volker

Publikováno v: Chemical Geology. 157:27-47

We investigated in a combined petrological, geochemical and isotope study the Miocene to Holocene volcanic activity in the Meidob Hills Volcanic Field, the north-eastern part of the Darfur Dome Volcanic Province in western Sudan. The Darfur Dome is r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::319dbf35e2dc47d5caba87d4410271f5
https://doi.org/10.1016/s0009-2541(98)00195-8

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He, Ne, Ar, and C isotope systematics of geothermal emanations in the Lesser Antilles Islands Arc

Autor: Konrad Hammerschmidt, Anselmo Pedroni, Hans Friedrichsen

Publikováno v: Geochimica et Cosmochimica Acta. 63:515-532

The authors present He, Ne, Ar, and C isotope analyses of hydrothermal brines and gases from fumaroles, hot springs, mofettes and hydrothermal exploration drillings on the major islands of the Lesser Antilles Arc. The origin of hydrothermal brines, w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7c82e3a8c521c4ba8ababd91b13c587c
https://doi.org/10.1016/s0016-7037(99)00018-6

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