TY  - JOUR
A1  - Krsnik, Emilija
A1  - Methner, Katharina
A1  - Campani, Marion
A1  - Botsyun, Svetlana
A1  - Mutz, Sebastian
A1  - Ehlers, Todd
A1  - Kempf, Oliver
A1  - Fiebig, Jens
A1  - Schlunegger, Fritz
A1  - Mulch, Andreas
T1  - Miocene high elevation in the Central Alps
T2  - Solid earth discussions
N2  - Reconstructing Oligocene-Miocene paleoelevation contributes to our understanding of the evolutionary history of the European Alps and sheds light on geodynamic and Earth’s surface processes involved in the development of Alpine topography. Despite being one of the most intensively explored mountain ranges worldwide, constraints on the elevation history of the European Alps, however, remain scarce. Here we present stable and clumped isotope geochemistry 15 measurements to provide a new paleoelevation estimate for the mid-Miocene (~14.5 Ma) European Central Alps. We apply stable isotope δ-δ paleoaltimetry on near sea level pedogenic carbonate oxygen isotope (δ18O) records from the Northern Alpine Foreland Basin (Swiss Molasse Basin) and high-Alpine phyllosilicate hydrogen isotope (δD) records from the Simplon Fault Zone (Swiss Alps). We further explore Miocene paleoclimate and paleoenvironmental conditions in the Swiss Molasse Basin through carbonate stable (δ18O, δ13C) and clumped (Δ47) isotope data from three foreland basin sections in different 20 alluvial megafan settings (proximal, mid-fan, and distal). Combined pedogenic carbonate δ18O values and Δ47 temperatures (30 ± 5°C) yield a near sea level precipitation δ18Ow value of -5.8 ± 0.2‰ and in conjunction with the high-Alpine phyllosilicate δD record suggest that the region surrounding the SFZ attained surface elevations of >4000 m no later than the mid-Miocene. Our near sea level δ18Ow estimate is supported by paleoclimate (iGCM Echam5-wiso) modeled δ18O values, which vary between -4.2 and -7.6‰ for the Northern Alpine Foreland Basin.
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/82269
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-822694
SN  - 1869-9537
N1  - Begutachteter Artikel erschienen in: Solid earth, 12.2021, Nr. 11, S. 2615-2631, doi: 10.5194/se-12-2615-2021
N1  - This is a contribution to DFG-SPP 2017 4D-MB. We acknowledge support through DFG ME 4955/1-1 (to KM), DFG MU 2845/6-1 (to AM), DFG EH 329/19-1 (to TAE), DFG MU 4188/1-1 (to SGM), and DFG FI 948/4-1 (to JF).
VL  - 12
SP  - 1
EP  - 28
PB  - Copernicus Publ.
CY  - Göttingen
ER  -