Universität zu Köln

Hinojosa-Prieto, Hector R., Soupios, Pantelis ORCID: 0000-0002-4153-3415 and Barsukov, Pavel (2021). Subsurface Geological Characterization of the Late Neogene-Quaternary Argive Basin, Peloponnese, Greece Using Transient Electromagnetic Data and Vintage Stratigraphic Logs. Geosciences, 11 (8). BASEL: MDPI. ISSN 2076-3263

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Abstract

The onshore and offshore clastic deposits of the Argive Basin and the Argolic Gulf, respectively, in Peloponnese, Greece, form a Late Neogene-Quaternary half-graben that connects with the Aegean Sea. The onshore Late Neogene-Quaternary sequence, comprised of chaotically intercalated cohesive and granular clastic deposits, is in angular unconformity with bedrock comprised of Triassic-Upper Cretaceous strongly-weathered, highly-fractured karstic limestones thrusted against Paleogene flysch deposits. While the surface geology of the Argive Basin is well-known, the subsurface geology remains both poorly mapped and understood. We utilized transient electromagnetic (TEM) soundings coupled with 185 vintage stratigraphic logs, current surface geology knowledge, and insights from available geophysical surveys to characterize the subsurface conditions of this sedimentary basin. We estimated the thickness of the young deposits (the depth to bedrock) and detected potential subsurface tectonic structures. The TEM-FAST 48HPC data acquisition system with integrated inversion and visualization software package was used with a single-loop dimension of 50 m x 50 m to collect a total of 329 TEM soundings at 151 stations scattered throughout the basin. The TEM station spacing varied from 200 to 750 m allowing the mapping of 80 km(2). The total depth of investigation with the inverted TEM data and the lithology logs was 130 m and 183 m, respectively. The joint interpretation produced several quasi-two-dimensional electrical resistivity profiles that traverse the sedimentary basin in various azimuths and depth slices of average electrical resistivity covering the basin. The depth slices and the vintage stratigraphic logs revealed an uneven bedrock topography overlain by an irregularly thick (over 180 m) Late Neogene-Quaternary heterolithic sediment cover.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hinojosa-Prieto, Hector R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Soupios, Pantelis UNSPECIFIED orcid.org/0000-0002-4153-3415 UNSPECIFIED Barsukov, Pavel UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-581868
DOI:	10.3390/geosciences11080317
Journal or Publication Title:	Geosciences
Volume:	11
Number:	8
Date:	2021
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	2076-3263
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEDIMENTARY BASIN; ADJACENT BASINS; AQUIFER; INVERSION; CRETE; GULF Multiple languages Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58186