Dr. Heiko Pingel

Kontakt

Universität Potsdam,
Institut für Erd- und Umweltwissenschaften

Dr. Heiko Pingel
Haus 27, Raum 2.31

Karl-Liebknecht-Str. 24-25
14476 Potsdam-Golm
E-Mail:
heikop@geo.uni-potsdam.de
Telefon:
+49 331 977 5847
Fax:
+49 331 977 5700
Dr. Heiko Pingel

 

  • Biografie
  • Forschung
  • Lehre
  • Publikationen

Biografie

since 2015
Postdoctoral researcher (CRN-derived paleoerosion rates in the Central Andes) - University of Potsdam
2015
Dr. rer. nat. in Geology "Mountain-range uplift and climate-system interactions in the southern Central Andes of NW Argentina" - University of Potsdam
2009
Diploma in Geology "Geotectonic basin and landscape evolution in the Eastern Cordillera of NW Argentina, Quebrada de Humahuaca (23°-24°S)" - University of Potsdam

Forschung

Spatio-temporal interactions among tectonics, climate, erosion and sedimentation in the southern Central Andes, NW Argentina

Qda de Humahuaca

The Andes today present a major orographic barrier to atmospheric circulation on a hemispheric scale. Moisture-bearing air masses, drawn into a seasonal low-pressure system in the Chaco lowland to the east of the orogen, rise progressively along the eastern flanks of the orogen and are adiabatically cooled during their ascent, resulting in summer thunderstorms and heavy rainfall. The eastern flanks receive rainfall of between 3,000 and 6,000 mm/a, whereas the intermontane basins in the Eastern Cordillera and the NW Sierras Pampeanas receive only 200 mm/a or less (Fig.1). The Puna Plateau receives even less precipitation. Focused precipitation along the eastern flanks and leeward aridification are characteristic of the entire length of the South Central Andes, and are manifested by an across-strike decrease in vegetative cover and fluvial transport efficiency. This present-day climatic gradient is also mirrored by the stable oxygen (O) and hydrogen (H) isotope composition of rainfall across the eastern plateau margin. By analogy with this present-day situation and other similar settings with strong precipitation gradients, stable isotope compositions preserved in the sedimentary archives of intermontane basins may therefore reflect past topographic and environmental changes associated with the development of orographic barriers.

overview

Figure 1 – (A) Shaded relief DEM and principal morphotectonic domains of the South Central Andes (after Jordan et al., 1983). (B) Mean annual rainfall map showing steep precipitation gradients along the eastern flanks of the Eastern Cordillera (EC), the Santa Barbará System (SBS), and the Sierras Pampeanas (SP). (C) Swath-profile compilation of topography, rainfall, and 3km-relief using the area and precipitation data shown in B).

Hydrogen-isotope geochemistry of hydrated volcanic glass

Volcanoes located within the volcanic arc and on the Puna Plateau of the Central Andes have been repeatedly active since the late Miocene, resulting in vast ash-fall deposits (>105 km2) in the eastern Andes and foreland regions, providing unique, dateable event horizons. An important factor is that rhyolitic glass incorporates large amounts of meteoric water (3-5 wt%) into its structure. This hydration process occurs in parallel with a change in the D/H-ratio of the glass (δDglass), thus representing a unique fingerprint of the H-isotope composition of the meteoric water present during hydration. This allows the reconstruction of the isotopic composition of paleo-precipitation (δDppt), which is an important indicator of long-term changes in precipitation patterns and continental moisture transport. One of the advantage of these volcanic glasses over authigenic and biogenic minerals, however, lies in their widespread occurrence and their potential for  high precision geochronology (e.g., U/Pb zircon, 40Ar/39Ar sanidine). Hydrated glass, therefore, provides a very useful isotopic record that can be linked to climatic change and/or paleoaltimetry.

Qda de Humahuaca; Maimara

Paleoerosion rate reconstruction by terrestrial cosmogenic radionuclide geochemistry

As cosmic radiation enters the Earth’s atmosphere it triggers a cascading chain reaction that causes high-energy subatomic particles to bombard the surface including rocks exposed. This relatively constant particle flux interacts with Si and O in surface-near quartz-bearing rocks, by which 26Al, 10Be, 21Ne and 3He - to name the most important - is formed. The longer a rock surface is exposed to this radiation (i.e., the slower the denudation rate) the more in-situ 10Be is produced. Hence, there is a negative relationship between erosion rate and cosmogenic nuclide concentrations in e.g., river sands, which is not only observable in modern catchments but also in stored fluvial/alluvial sediments. This allows to estimate paleo-denudation rates and therefore a spatiotemporal reconstruction of surface processes on timescales of 106 years. 

Intermontane basins along the eastern Puna Plateau margin in NW Argentina, such as the Humahuaca Basin, are our natural laboratories to study the effects of uplift and climate change. As a consequence of the Andean eastward migration, such areas were incorporated into the orogen during the late Miocene to Pliocene, experienced uplift, and ultimately orographic barrier uplift associated with dryness in the newly formed intermontane hinterland basins. Our preliminary work on fluvial and alluvial fill material in the Humahuaca Basin show intriguing results that relate the onset of semi-arid conditions with an order-of-magnitude reduction in erosion rates. These results highlight the importance of climatic factors, such as precipitation and moisture availability for the efficiency of surface processes as the orogen evolves. Previous studies revealed similar observations in Argentina in modern catchment-wide erosion rates across the Andes.

Lehre

2016 - MScP02 Seminar/Kolloquium Geowissenschaften

2015 - MScP02 Seminar/Kolloquium Geowissenschaften

Publikationen

Journal contributions:

Rohrmann, A., Sachse, D., Mulch, A., Pingel, H., Tofelde, S., Alonso, R.N., Strecker, M.R., (2016) Miocene orographic uplift forces rapid hydrological change in the southern central Andes. Sci Reports, 6, 1–7. doi:10.1038/srep35678

Pingel, H., Mulch, A., Alonso, R.N., Cottle, J.M., Hynek, S.A., Poletti, J., Rohrmann, A., Schmitt, A.K., Stockli, D.F., Strecker, M.R., (2016) Surface uplift and convective rainfall along the southern Central Andes (Angastaco Basin, NW Argentina). Earth and Planetary Science Letters, 440(C), 33-42. doi:10.1016/j.epsl.2016.02.009

Rohrmann, A., Strecker, M.R., Bookhagen, B., Mulch, A., Sachse, D., Pingel, H., Alonso, R.N., Schildgen, T.F., Montero, C. (2014). Can stable isotopes ride out the storms? The role of convection for water isotopes in models, records, and paleoaltimetry studies in the central Andes. Earth and Planetary Science Letters, 407, 187–195. doi:10.1016/j.epsl.2014.09.021

Pingel, H., Alonso, R., Mulch, A., Rohrmann, A., Sudo, M., Strecker, M.R. (2014). Pliocene orographic barrier uplift in the southern Central Andes. Geology, 42(8), 691-694. doi:10.1130/G35538.1

Pingel, H., Strecker, M.R., Alonso, R., Schmitt, A.K. (2013). Neotectonic basin and landscape evolution in the Eastern Cordillera of NW Argentina, southern Humahuaca Basin (~24°S). Basin Research, 25, 554–573. doi:10.1111/bre.12016.

Hain, M., Strecker, M.R., Bookhagen, B., Alonso, R.N., Pingel, H.,  Schmitt, A.K. (2011). Neogene to Quaternary broken-foreland formation and sedimentation dynamics in the Andes of NW Argentina (25°S). Tectonics, 30, TC2006, doi:10.1029/2010TC002703.

 

Conference Abstracts:

Pingel, H., Schildgen, T., Wittmann, H. (2017) Plio-Pleistocene paleo-erosion rates as a recorder of orographic barrier uplift in the NW-Argentine Andes (Humahuaca Basin), Geophysical Research Abstracts, 19, EGU2017-13967, EGU General Assembly 2017, Vienna, Austria.

Pingel, H., Mulch, A., Rohrmann, A., Alonso, R.N., Strecker, M.R. (2015). Hydrogen stable isotopes from hydrated volcanic glass record orogenic growth and climate change at the eastern Puna Plateau margin, NW Argentina. AGU Fall Meeting Abstracts, T21B­-2816, San Francisco, USA. (Poster) 

Pingel, H., Mulch, A., Strecker, M.R., Cottle, J.M., Poletti, J., Rohrmann, A., Alonso, R.N. (2014). Orographic barrier development along the eastern flanks of the southern central Andes, Argentina: new insights from stable hydrogen isotopes in hydrated volcanic glass.  AGU Fall Meeting Abstracts, T21C­-4624, 2014, San Francisco, USA. (Poster) 

Pingel, H., Strecker, M.R., Mulch, A., Rohrmann, A., Alonso, R.N. (2013). Tracking Orographic Barriers through Hydrogen Stable Isotopes in Hydrated Volcanic Glass (Humahuaca Basin, E Cordillera, NW Argentina, 23­-24°S).  AGU Fall Meeting Abstracts, T41B­-2569, 2013, San Francisco, USA. (Poster) 

Pingel, H., Strecker, M.R., Mulch, A., Hynek, S.A. (2012). Orographic Barrier Uplift and Climate-System Interactions in the Southern Central Andes of NW Argentina; Insights from Stable Isotope Hydrogen Compositions of Hydrated Volcanic Glasses.  AGU Fall Meeting Abstracts, T33B-2659, 2012, San Francisco, USA. (Poster) 

Pingel, H., Strecker, M.R., Hilley, G.E., Alonso, R., Schmitt, A.K. (2011). Sedimentary and Tectonic Evolution of the Intermontane Humahuaca Basin in the Eastern Cordillera of NW Argentina (~23.5°S): Possible Feedbacks between Sedimentary and Tectonic Processes. AGU Fall Meeting Abstracts, T24C-07, 2011, San Francisco, USA.

Pingel, H., Strecker, M.R., Hilley, G.E., Alonso, R., Schmitt, A.K. (2011). Intermontane Basin and Landscape Evolution in the Eastern Cordillera of NW Argentina – S Humahuaca Basin (23°S). Geophysical Research Abstracts, 13, EGU2011-11654, EGU General Assembly 2011, Vienna, Austria.

Pingel, H., Strecker, M.R., Hilley, G.E., Alonso, R., Schmitt, A.K. (2009). Neotectonic Basin and Landscape Evolution in the Eastern Cordillera of NW Argentina - Humahuaca Basin (23-24°S). AGU Fall Meeting Abstracts, T43B-2060, 2009, San Francisco, USA. (Poster)

Pingel, H. and Strecker, M.R. (2009). Neotectonic evolution of the southern intermontane Humahuaca basin, E Cordillera, Argentina (23°S lat): insights into Neogene to Quaternary foreland basin and landscape evolution in the southern central Andes. TECTSED 2009, Bonn, Germany. (Poster)

Biografie

since 2015
Postdoctoral researcher (CRN-derived paleoerosion rates in the Central Andes) - University of Potsdam
2015
Dr. rer. nat. in Geology "Mountain-range uplift and climate-system interactions in the southern Central Andes of NW Argentina" - University of Potsdam
2009
Diploma in Geology "Geotectonic basin and landscape evolution in the Eastern Cordillera of NW Argentina, Quebrada de Humahuaca (23°-24°S)" - University of Potsdam

Forschung

Spatio-temporal interactions among tectonics, climate, erosion and sedimentation in the southern Central Andes, NW Argentina

Qda de Humahuaca

The Andes today present a major orographic barrier to atmospheric circulation on a hemispheric scale. Moisture-bearing air masses, drawn into a seasonal low-pressure system in the Chaco lowland to the east of the orogen, rise progressively along the eastern flanks of the orogen and are adiabatically cooled during their ascent, resulting in summer thunderstorms and heavy rainfall. The eastern flanks receive rainfall of between 3,000 and 6,000 mm/a, whereas the intermontane basins in the Eastern Cordillera and the NW Sierras Pampeanas receive only 200 mm/a or less (Fig.1). The Puna Plateau receives even less precipitation. Focused precipitation along the eastern flanks and leeward aridification are characteristic of the entire length of the South Central Andes, and are manifested by an across-strike decrease in vegetative cover and fluvial transport efficiency. This present-day climatic gradient is also mirrored by the stable oxygen (O) and hydrogen (H) isotope composition of rainfall across the eastern plateau margin. By analogy with this present-day situation and other similar settings with strong precipitation gradients, stable isotope compositions preserved in the sedimentary archives of intermontane basins may therefore reflect past topographic and environmental changes associated with the development of orographic barriers.

overview

Figure 1 – (A) Shaded relief DEM and principal morphotectonic domains of the South Central Andes (after Jordan et al., 1983). (B) Mean annual rainfall map showing steep precipitation gradients along the eastern flanks of the Eastern Cordillera (EC), the Santa Barbará System (SBS), and the Sierras Pampeanas (SP). (C) Swath-profile compilation of topography, rainfall, and 3km-relief using the area and precipitation data shown in B).

Hydrogen-isotope geochemistry of hydrated volcanic glass

Volcanoes located within the volcanic arc and on the Puna Plateau of the Central Andes have been repeatedly active since the late Miocene, resulting in vast ash-fall deposits (>105 km2) in the eastern Andes and foreland regions, providing unique, dateable event horizons. An important factor is that rhyolitic glass incorporates large amounts of meteoric water (3-5 wt%) into its structure. This hydration process occurs in parallel with a change in the D/H-ratio of the glass (δDglass), thus representing a unique fingerprint of the H-isotope composition of the meteoric water present during hydration. This allows the reconstruction of the isotopic composition of paleo-precipitation (δDppt), which is an important indicator of long-term changes in precipitation patterns and continental moisture transport. One of the advantage of these volcanic glasses over authigenic and biogenic minerals, however, lies in their widespread occurrence and their potential for  high precision geochronology (e.g., U/Pb zircon, 40Ar/39Ar sanidine). Hydrated glass, therefore, provides a very useful isotopic record that can be linked to climatic change and/or paleoaltimetry.

Qda de Humahuaca; Maimara

Paleoerosion rate reconstruction by terrestrial cosmogenic radionuclide geochemistry

As cosmic radiation enters the Earth’s atmosphere it triggers a cascading chain reaction that causes high-energy subatomic particles to bombard the surface including rocks exposed. This relatively constant particle flux interacts with Si and O in surface-near quartz-bearing rocks, by which 26Al, 10Be, 21Ne and 3He - to name the most important - is formed. The longer a rock surface is exposed to this radiation (i.e., the slower the denudation rate) the more in-situ 10Be is produced. Hence, there is a negative relationship between erosion rate and cosmogenic nuclide concentrations in e.g., river sands, which is not only observable in modern catchments but also in stored fluvial/alluvial sediments. This allows to estimate paleo-denudation rates and therefore a spatiotemporal reconstruction of surface processes on timescales of 106 years. 

Intermontane basins along the eastern Puna Plateau margin in NW Argentina, such as the Humahuaca Basin, are our natural laboratories to study the effects of uplift and climate change. As a consequence of the Andean eastward migration, such areas were incorporated into the orogen during the late Miocene to Pliocene, experienced uplift, and ultimately orographic barrier uplift associated with dryness in the newly formed intermontane hinterland basins. Our preliminary work on fluvial and alluvial fill material in the Humahuaca Basin show intriguing results that relate the onset of semi-arid conditions with an order-of-magnitude reduction in erosion rates. These results highlight the importance of climatic factors, such as precipitation and moisture availability for the efficiency of surface processes as the orogen evolves. Previous studies revealed similar observations in Argentina in modern catchment-wide erosion rates across the Andes.

Lehre

2016 - MScP02 Seminar/Kolloquium Geowissenschaften

2015 - MScP02 Seminar/Kolloquium Geowissenschaften

Publikationen

Journal contributions:

Rohrmann, A., Sachse, D., Mulch, A., Pingel, H., Tofelde, S., Alonso, R.N., Strecker, M.R., (2016) Miocene orographic uplift forces rapid hydrological change in the southern central Andes. Sci Reports, 6, 1–7. doi:10.1038/srep35678

Pingel, H., Mulch, A., Alonso, R.N., Cottle, J.M., Hynek, S.A., Poletti, J., Rohrmann, A., Schmitt, A.K., Stockli, D.F., Strecker, M.R., (2016) Surface uplift and convective rainfall along the southern Central Andes (Angastaco Basin, NW Argentina). Earth and Planetary Science Letters, 440(C), 33-42. doi:10.1016/j.epsl.2016.02.009

Rohrmann, A., Strecker, M.R., Bookhagen, B., Mulch, A., Sachse, D., Pingel, H., Alonso, R.N., Schildgen, T.F., Montero, C. (2014). Can stable isotopes ride out the storms? The role of convection for water isotopes in models, records, and paleoaltimetry studies in the central Andes. Earth and Planetary Science Letters, 407, 187–195. doi:10.1016/j.epsl.2014.09.021

Pingel, H., Alonso, R., Mulch, A., Rohrmann, A., Sudo, M., Strecker, M.R. (2014). Pliocene orographic barrier uplift in the southern Central Andes. Geology, 42(8), 691-694. doi:10.1130/G35538.1

Pingel, H., Strecker, M.R., Alonso, R., Schmitt, A.K. (2013). Neotectonic basin and landscape evolution in the Eastern Cordillera of NW Argentina, southern Humahuaca Basin (~24°S). Basin Research, 25, 554–573. doi:10.1111/bre.12016.

Hain, M., Strecker, M.R., Bookhagen, B., Alonso, R.N., Pingel, H.,  Schmitt, A.K. (2011). Neogene to Quaternary broken-foreland formation and sedimentation dynamics in the Andes of NW Argentina (25°S). Tectonics, 30, TC2006, doi:10.1029/2010TC002703.

 

Conference Abstracts:

Pingel, H., Schildgen, T., Wittmann, H. (2017) Plio-Pleistocene paleo-erosion rates as a recorder of orographic barrier uplift in the NW-Argentine Andes (Humahuaca Basin), Geophysical Research Abstracts, 19, EGU2017-13967, EGU General Assembly 2017, Vienna, Austria.

Pingel, H., Mulch, A., Rohrmann, A., Alonso, R.N., Strecker, M.R. (2015). Hydrogen stable isotopes from hydrated volcanic glass record orogenic growth and climate change at the eastern Puna Plateau margin, NW Argentina. AGU Fall Meeting Abstracts, T21B­-2816, San Francisco, USA. (Poster) 

Pingel, H., Mulch, A., Strecker, M.R., Cottle, J.M., Poletti, J., Rohrmann, A., Alonso, R.N. (2014). Orographic barrier development along the eastern flanks of the southern central Andes, Argentina: new insights from stable hydrogen isotopes in hydrated volcanic glass.  AGU Fall Meeting Abstracts, T21C­-4624, 2014, San Francisco, USA. (Poster) 

Pingel, H., Strecker, M.R., Mulch, A., Rohrmann, A., Alonso, R.N. (2013). Tracking Orographic Barriers through Hydrogen Stable Isotopes in Hydrated Volcanic Glass (Humahuaca Basin, E Cordillera, NW Argentina, 23­-24°S).  AGU Fall Meeting Abstracts, T41B­-2569, 2013, San Francisco, USA. (Poster) 

Pingel, H., Strecker, M.R., Mulch, A., Hynek, S.A. (2012). Orographic Barrier Uplift and Climate-System Interactions in the Southern Central Andes of NW Argentina; Insights from Stable Isotope Hydrogen Compositions of Hydrated Volcanic Glasses.  AGU Fall Meeting Abstracts, T33B-2659, 2012, San Francisco, USA. (Poster) 

Pingel, H., Strecker, M.R., Hilley, G.E., Alonso, R., Schmitt, A.K. (2011). Sedimentary and Tectonic Evolution of the Intermontane Humahuaca Basin in the Eastern Cordillera of NW Argentina (~23.5°S): Possible Feedbacks between Sedimentary and Tectonic Processes. AGU Fall Meeting Abstracts, T24C-07, 2011, San Francisco, USA.

Pingel, H., Strecker, M.R., Hilley, G.E., Alonso, R., Schmitt, A.K. (2011). Intermontane Basin and Landscape Evolution in the Eastern Cordillera of NW Argentina – S Humahuaca Basin (23°S). Geophysical Research Abstracts, 13, EGU2011-11654, EGU General Assembly 2011, Vienna, Austria.

Pingel, H., Strecker, M.R., Hilley, G.E., Alonso, R., Schmitt, A.K. (2009). Neotectonic Basin and Landscape Evolution in the Eastern Cordillera of NW Argentina - Humahuaca Basin (23-24°S). AGU Fall Meeting Abstracts, T43B-2060, 2009, San Francisco, USA. (Poster)

Pingel, H. and Strecker, M.R. (2009). Neotectonic evolution of the southern intermontane Humahuaca basin, E Cordillera, Argentina (23°S lat): insights into Neogene to Quaternary foreland basin and landscape evolution in the southern central Andes. TECTSED 2009, Bonn, Germany. (Poster)