TY  - JOUR
A1  - Montero-Lopez, Carolina
A1  - Strecker, Manfred
A1  - Schildgen, Taylor F.
A1  - Hongn, Fernando D.
A1  - Guzman, Silvina
A1  - Bookhagen, Bodo
A1  - Sudo, Masafumi
T1  - Local high relief at the southern margin of the Andean plateau by 9 Ma: evidence from ignimbritic valley fills and river incision
JF  - Terra nova
N2  - A valley-filling ignimbrite re-exposed through subsequent river incision at the southern margin of the Andean (Puna) plateau preserves pristine geological evidence of pre-late Miocene palaeotopography in the north western Argentine Andes. Our new Ar-40/(39) Ar dating of the Las Papas Ignimbrites yields a plateau age of 9.24 +/- 0.03 Ma, indicating valley-relief and orographic-barrier conditions comparable to the present-day. A later infill of Plio-Pleistocene coarse conglomerates has been linked to wetter conditions, but resulted in no additional net incision of the Las Papas valley, considering that the base of the ignimbrite remains unexposed in the valley bottom. Our observations indicate that at least 550 m of local plateau margin relief (and likely > 2 km) existed by 9 Ma at the southern Puna margin, which likely aided the efficiency of the orographic barrier to rainfall along the eastern and south eastern flanks of the Puna and causes aridity in the plateau interior.
Y1  - 2014
U6  - https://doi.org/10.1111/ter.12120
SN  - 0954-4879
SN  - 1365-3121
VL  - 26
IS  - 6
SP  - 454
EP  - 460
PB  - Wiley-Blackwell
CY  - Hoboken
ER  - 
TY  - JOUR
A1  - Schildgen, Taylor F.
A1  - Cosentino, D.
A1  - Frijia, Gianluca
A1  - Castorina, F.
A1  - Dudas, F. Oe.
A1  - Iadanza, A.
A1  - Sampalmieri, G.
A1  - Cipollari, Paola
A1  - Caruso, A.
A1  - Bowring, S. A.
A1  - Strecker, Manfred
T1  - Sea level and climate forcing of the Sr isotope composition of late Miocene Mediterranean marine basins
JF  - Geochemistry, geophysics, geosystems
N2  - Sr isotope records from marginal marine basins track the mixing between seawater and local continental runoff, potentially recording the effects of sea level, tectonic, and climate forcing in marine fossils and sediments. Our 110 new Sr-87/Sr-86 analyses on oyster and foraminifera samples from six late Miocene stratigraphic sections in southern Turkey, Crete, and Sicily show that Sr-87/Sr-86 fell below global seawater values in the basins several million years before the Messinian Salinity Crisis, coinciding with tectonic uplift and basin shallowing. 87Sr/86Sr from more centrally located basins (away from the Mediterranean coast) drop below global seawater values only during the Messinian Salinity Crisis. In addition to this general trend, 55 new Sr-87/Sr-86 analyses from the astronomically tuned Lower Evaporites in the central Apennines (Italy) allow us to explore the effect of glacio-eustatic sea level and precipitation changes on Sr-87/Sr-86. Most variation in our data can be explained by changes in sea level, with greatest negative excursions from global seawater values occurring during relative sea level lowstands, which generally coincided with arid conditions in the Mediterranean realm. We suggest that this greater sensitivity to lowered sea level compared with higher runoff could relate to the inverse relationship between Sr concentration and river discharge. Variations in the residence time of groundwater within the karst terrain of the circum-Mediterranean region during arid and wet phases may help to explain the single (robust) occurrence of a negative excursion during a sea level highstand, but this explanation remains speculative without more detailed paleoclimatic data for the region.
Y1  - 2014
U6  - https://doi.org/10.1002/2014GC005332
SN  - 1525-2027
VL  - 15
IS  - 7
SP  - 2964
EP  - 2983
PB  - American Geophysical Union
CY  - Washington
ER  - 
TY  - JOUR
A1  - Rohrmann, Alexander
A1  - Strecker, Manfred
A1  - Bookhagen, Bodo
A1  - Mulch, Andreas
A1  - Sachse, Dirk
A1  - Pingel, Heiko
A1  - Alonso, Ricardo N.
A1  - Schildgen, Taylor F.
A1  - Montero, Carolina
T1  - Can stable isotopes ride out the storms? The role of convection for water isotopes in models, records, and paleoaltimetry studies in the central Andes
JF  - Earth & planetary science letters
KW  - stable isotopes
KW  - Andes
KW  - precipitation
KW  - convection
KW  - paleoaltimetry
KW  - TRMM satellite data
Y1  - 2014
U6  - https://doi.org/10.1016/j.epsl.2014.09.021
SN  - 0012-821X
SN  - 1385-013X
VL  - 407
SP  - 187
EP  - 195
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Schildgen, Taylor F.
A1  - Yildirim, C.
A1  - Cosentino, Domenico
A1  - Strecker, Manfred
T1  - Linking slab break-off, Hellenic trench retreat, and uplift of the Central and Eastern Anatolian plateaus
JF  - Earth science reviews : the international geological journal bridging the gap between research articles and textbooks
KW  - Anatolian plateau
KW  - Surface uplift
KW  - North Anatolian Fault
KW  - Slab break-off
KW  - Eratosthenes Seamount
KW  - Hellenic trench
Y1  - 2014
U6  - https://doi.org/10.1016/j.earscirev.2013.11.006
SN  - 0012-8252
SN  - 1872-6828
VL  - 128
SP  - 147
EP  - 168
PB  - Elsevier
CY  - Amsterdam
ER  -