Geophysical mapping of the sediment architecture in the Orkhon Valley, Mongolia

Ground penetrating radar (GPR) and capacitive coupled resistivity (CCR) measurements were conducted in order to image subsurface structures in the Orkhon Valley, Central Mongolia. The data are extended by information from drill cores to the entire transects distinguishing different sedimentary envir...

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Bibliographic Details
Main Authors: Mackens, Sonja, Klitzsch, Norbert, Grützner, Christoph
Format: Dataset
Language:English
Published: PANGAEA 2011
Subjects:
Capacitive geoelectrics
Comment of event
Date/Time of event
Date/Time of event 2
Event label
GEOP
Geophysics
Ground-penetrating radar (GPR)
Latitude of event
Latitude of event 2
Longitude of event
Longitude of event 2
Orkhon Valley
Central Mongolia
Transect_A
Transect_B
Transect_C
Transect_D
Transect_E
Transect_F
Transect_G
Transect_H
Transect_I
Uniform resource locator/link to file
Uniform resource locator/link to graphic
Uniform resource locator/link to sgy data file
permafrost
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.755563
https://doi.org/10.1594/PANGAEA.755563
Description
Summary:Ground penetrating radar (GPR) and capacitive coupled resistivity (CCR) measurements were conducted in order to image subsurface structures in the Orkhon Valley, Central Mongolia. The data are extended by information from drill cores to the entire transects distinguishing different sedimentary environments in the valley. The Orkhon Valley is part of the high sensitive Steppe region in Central Mongolia, one of the most important cultural landscapes in Central Asia. There, archaeological, geoarchaeological and sedimentological research aims to reconstruct the landscape evolution and the interaction between man and environment during the last millennia since the first settlement. In May 2009 and 2010 geophysical surveys have been conducted including transects with lengths between 1.5 and 30 km crossing the entire valley and a kilometre-scaled grid in the southern part of the investigation area. The geoelectrical and GPR data revealed the existence of two layers characterized by different resistivity values and radar reflectors. The two layers do not only represent material contrasts, but also reflect the influence of sporadic permafrost which occurs in several areas of Mongolia. The results help to reconstruct the evolution of the braided Orkhon River and therefore give important hints to understand the environmental history of the Orkhon Valley.

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