Geologic and topographic maps of the Kabul South 30' x 60' quadrangle, Afghanistan

Bohannon, Robert G.

doi:10.3133/sim3137

Cited by 9 publications

(13 citation statements)

References 6 publications

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“…4). Mapped faults (Bohannon, 2010) and lineaments (Hubbard and others, 2012) also indicate that rocks in the study area are likely to be highly fractured and may contain considerable amounts of water. Where exposed at the surface, these rocks appear to be intensely fractured, and the intense fracturing likely results in moderate hydraulic conductivities and potential for groundwater storage.…”

Section: Boundary Of Chakari Basin-see Figure 1 For Full Extentmentioning

confidence: 83%

“…A few ephemeral streams drain the surrounding hills and ridges and are tributaries to the Chakari River. The average elevation of the hills and ridges surrounding the basin is 2,900 meters (m) above World Geodetic System of 1984 (WGS 84), with a few peaks rising above 3,300 m (Bohannon, 2010). The lowest point in the basin is 2,050 m at the Band-i-Amir Ghazi Reservoir (coincident with the streamgage symbol on fig.…”

Section: Geographic Settingmentioning

confidence: 95%

“…1). The floor of the basin can be defined approximately by the 2,350-m topographic contour line (Bohannon, 2010). The transition from the basin floor to the surrounding hills and ridges is marked by variously sized alluvial fans with angles of repose from 3 to 9 degrees.…”

Section: Geographic Settingmentioning

confidence: 99%

“…The geology of the study area is mapped in detail in Bohannon (2010). The Chakari Basin study area is within the Aynak Syncline Zone of the Kabul tectonic block, and detailed geologic and mineral investigations are provided by Peters and others (2011).…”

Section: Geologymentioning

confidence: 99%

“…Dolomitic marble is the primary host rock for the Aynak copper mineralization. Limestone and dolomite east of the Chakari River are in contact with sedimentary rocks (sandstone) along low-angle faults; sedimentary rocks may be present beneath unconsolidated sediments in much of the study area (Bohannon, 2010). Outcrops of metamorphic rock (gneiss and migmatite, amphibolite, schist, and marble) form the ridges along the northern boundary of the study area and form some of the ridges and hills within the basin ( fig.…”

Section: Bedrockmentioning

confidence: 99%

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Hydrogeology and water quality of the Chakari Basin, Afghanistan

Mack¹,

Chornack²,

Flanagan³

et al. 2014

Scientific Investigations Report

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Delta notation for reporting of isotope data.-Stable isotope data are reported as a ratio relative to the ratio of a standard. For example, 18 O/ 16 O of a sample is compared with 18 O/ 16 O of a standard by the relation: δ 18 O = (Rsample/Rstandard-1) × 1,000, where Rsample = 18 O/ 16 O in the sample, Rstandard = 18 O/ 16 O in the standard, and δ 18 O = relative difference in concentration, in parts per thousand (per mil). Delta 18 O (δ 18 O) is referred to as delta notation and is the value reported by isotopic laboratories for stable isotope analysis. Deuterium, designated as δ 2 H, can be derived by analogy to δ 18 O where the ratio 2 H:H replaces 18 O/ 16 O in Rsample and Rstandard. The standard used for determining δ 18 O and δ 2 H in water used in this report is Vienna standard mean ocean water (VSMOW). If δ 18 O and δ 2 H samples contain more of the heavier isotopes (18 O or 2 H) than the reference material, the samples have positive per mil values and are referred to as heavier than the reference material or as being enriched in the heavier isotope. Conversely, if the samples contain more of the lighter isotopes (16 O or H) than the reference material, the samples have negative per mil values and are referred to as lighter than the reference material or as being depleted in the heavier isotope. For example, a δ 18 O value of-18.15 per mil can be referred to as lighter than VSMOW or depleted in 18 O relative to VSMOW. Place names given in this report are anglicized translations from the Dari language; however, there may not be a universally accepted English language translation for many names. This report attempts to use the most commonly used translation where possible, but the reader is cautioned that other variants of names may be in use.

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Section: Boundary Of Chakari Basin-see Figure 1 For Full Extentmentioning

confidence: 83%

Section: Geographic Settingmentioning

confidence: 95%

Section: Geographic Settingmentioning

confidence: 99%

Section: Geologymentioning

confidence: 99%

Section: Bedrockmentioning

confidence: 99%

See 3 more Smart Citations

Hydrogeology and water quality of the Chakari Basin, Afghanistan

Mack¹,

Chornack²,

Flanagan³

et al. 2014

Scientific Investigations Report

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Groundwater Availability in the Kabul Basin, Afghanistan

Mack

2018

Springer Hydrogeology

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The effects of urbanization on the groundwater system of the Kabul shallow aquifers, Afghanistan

2022

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The capital city of Afghanistan, Kabul, has experienced rapid urbanization since the end of 2001. The aim of this study is to evaluate the impact of rapid urbanization on the Kabul aquifer system, which is the main source of water for domestic, agricultural and industrial use in the area. Satellite imagery, groundwater levels and rainfall historical data were analyzed in conjunction with physico-chemical parameters that were measured at 27 water wells located in the Kabul Plain in 2020. Land-cover maps indicate that the urban surface area increased by 40% between 2000 and 2020, whilst the agricultural surface area simultaneously decreased by 32%. Meanwhile the Kabul Plain has globally experienced a severe decrease in groundwater levels (-0.8 m/year on average, and a fall of 60 m in some places) due to overabstraction, which has also seen changes in groundwater flow directions. Hydrochemistry, on the other hand, reveals that chloride concentrations and salinity increased throughout the aquifer between 2005 and 2020, while the nitrate concentration decreased in most places of the Kabul Plain over the considered period. The results suggest that rapid urbanization has had serious detrimental effects on both groundwater quantity and quality. Without urgent preventive policy and the implementation of effective practices, groundwater resource depletion and groundwater quality deterioration in the Kabul shallow aquifers are likely to continue in the future.

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Geologic and topographic maps of the Kabul South 30' x 60' quadrangle, Afghanistan

Cited by 9 publications

References 6 publications

Hydrogeology and water quality of the Chakari Basin, Afghanistan

Hydrogeology and water quality of the Chakari Basin, Afghanistan

Groundwater Availability in the Kabul Basin, Afghanistan

The effects of urbanization on the groundwater system of the Kabul shallow aquifers, Afghanistan

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