A geospatial investigation of interlinkage between basement fault architecture and coastal aquifer hydrogeochemistry
The Mahanadi delta, deposited on a series of horst and graben basement structures, is considered an extension of the East Lambert Rift of Antarctica. Current study is based on the hydrogeochemical assessment of this deltaic aquifer system and geospatial analysis thereof, to appreciate the basement s...
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ftdoajarticles:oai:doaj.org/article:4be073d22ba74231bb711878c6b3ae74 2023-10-09T21:45:37+02:00 A geospatial investigation of interlinkage between basement fault architecture and coastal aquifer hydrogeochemistry P.P. Das P.P. Mohapatra S. Goswami M. Mishra J.K. Pattanaik 2020-07-01T00:00:00Z https://doi.org/10.1016/j.gsf.2019.12.008 https://doaj.org/article/4be073d22ba74231bb711878c6b3ae74 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S1674987120300013 https://doaj.org/toc/1674-9871 1674-9871 doi:10.1016/j.gsf.2019.12.008 https://doaj.org/article/4be073d22ba74231bb711878c6b3ae74 Geoscience Frontiers, Vol 11, Iss 4, Pp 1431-1440 (2020) Hydrogeochemistry Mahanadi Geospatial Salinity Cluster analysis Geology QE1-996.5 article 2020 ftdoajarticles https://doi.org/10.1016/j.gsf.2019.12.008 2023-09-10T00:50:19Z The Mahanadi delta, deposited on a series of horst and graben basement structures, is considered an extension of the East Lambert Rift of Antarctica. Current study is based on the hydrogeochemical assessment of this deltaic aquifer system and geospatial analysis thereof, to appreciate the basement structure influence on groundwater chemistry. Major ion chemistry of subsurface waters portrays a distinct saline contamination across the terrain and varied regimes of water types, specifically with respect to southern and northern parts of this aquifer system. Findings of the study indicate a general near surface saline horizon and significant fragmentation of the hydrostatic units. This, in turn, implies noteworthy influence of formational water to salinity regimes and basin structural changes for the escape of these waters to surroundings. A plot of recent low intensity earthquakes displays proximity of epicenters to the faults as well as striking similarity to the trend of terrestrial faults indicating multiple reactivations of the faults. To further corroborate the above findings, spatial pattern analysis of individual hydrochemical variables is carried out which reveals specific clusters of sources (groundwater mixing) and sinks (groundwater dispersion) in proximity to basement fault dispositions. While the faults can be disregarded as conduits or barriers owing to their great depth, the overlying sedimentary mass, particularly, the horizons with significant clayey content have been distorted due to post rift subsidence and fault reactivations. A proximity analysis of ionic clusters points towards a greater influence of longitudinal faults to that of the transverse ones on groundwater mixing or dispersion. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Geoscience Frontiers 11 4 1431 1440 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Hydrogeochemistry Mahanadi Geospatial Salinity Cluster analysis Geology QE1-996.5 |
spellingShingle |
Hydrogeochemistry Mahanadi Geospatial Salinity Cluster analysis Geology QE1-996.5 P.P. Das P.P. Mohapatra S. Goswami M. Mishra J.K. Pattanaik A geospatial investigation of interlinkage between basement fault architecture and coastal aquifer hydrogeochemistry |
topic_facet |
Hydrogeochemistry Mahanadi Geospatial Salinity Cluster analysis Geology QE1-996.5 |
description |
The Mahanadi delta, deposited on a series of horst and graben basement structures, is considered an extension of the East Lambert Rift of Antarctica. Current study is based on the hydrogeochemical assessment of this deltaic aquifer system and geospatial analysis thereof, to appreciate the basement structure influence on groundwater chemistry. Major ion chemistry of subsurface waters portrays a distinct saline contamination across the terrain and varied regimes of water types, specifically with respect to southern and northern parts of this aquifer system. Findings of the study indicate a general near surface saline horizon and significant fragmentation of the hydrostatic units. This, in turn, implies noteworthy influence of formational water to salinity regimes and basin structural changes for the escape of these waters to surroundings. A plot of recent low intensity earthquakes displays proximity of epicenters to the faults as well as striking similarity to the trend of terrestrial faults indicating multiple reactivations of the faults. To further corroborate the above findings, spatial pattern analysis of individual hydrochemical variables is carried out which reveals specific clusters of sources (groundwater mixing) and sinks (groundwater dispersion) in proximity to basement fault dispositions. While the faults can be disregarded as conduits or barriers owing to their great depth, the overlying sedimentary mass, particularly, the horizons with significant clayey content have been distorted due to post rift subsidence and fault reactivations. A proximity analysis of ionic clusters points towards a greater influence of longitudinal faults to that of the transverse ones on groundwater mixing or dispersion. |
format |
Article in Journal/Newspaper |
author |
P.P. Das P.P. Mohapatra S. Goswami M. Mishra J.K. Pattanaik |
author_facet |
P.P. Das P.P. Mohapatra S. Goswami M. Mishra J.K. Pattanaik |
author_sort |
P.P. Das |
title |
A geospatial investigation of interlinkage between basement fault architecture and coastal aquifer hydrogeochemistry |
title_short |
A geospatial investigation of interlinkage between basement fault architecture and coastal aquifer hydrogeochemistry |
title_full |
A geospatial investigation of interlinkage between basement fault architecture and coastal aquifer hydrogeochemistry |
title_fullStr |
A geospatial investigation of interlinkage between basement fault architecture and coastal aquifer hydrogeochemistry |
title_full_unstemmed |
A geospatial investigation of interlinkage between basement fault architecture and coastal aquifer hydrogeochemistry |
title_sort |
geospatial investigation of interlinkage between basement fault architecture and coastal aquifer hydrogeochemistry |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://doi.org/10.1016/j.gsf.2019.12.008 https://doaj.org/article/4be073d22ba74231bb711878c6b3ae74 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Geoscience Frontiers, Vol 11, Iss 4, Pp 1431-1440 (2020) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1674987120300013 https://doaj.org/toc/1674-9871 1674-9871 doi:10.1016/j.gsf.2019.12.008 https://doaj.org/article/4be073d22ba74231bb711878c6b3ae74 |
op_doi |
https://doi.org/10.1016/j.gsf.2019.12.008 |
container_title |
Geoscience Frontiers |
container_volume |
11 |
container_issue |
4 |
container_start_page |
1431 |
op_container_end_page |
1440 |
_version_ |
1779320319924764672 |