scholarly journals Cl, Br, B, Li, and noble gases isotopes to study the origin and evolution of deep groundwater in sedimentary basins: a review

2022 ◽  
Author(s):  
Wanjun Jiang ◽  
Yizhi Sheng ◽  
Guangcai Wang ◽  
Zheming Shi ◽  
Futian Liu ◽  
...  
Keyword(s):  
Noble Gases ◽  
Sedimentary Basins ◽  
Deep Groundwater ◽  
Origin And Evolution

A new sedimentary cover model for the southern area of the East European Platform and the Pre-Caucasus based on decompensation gravity anomalies data

2021 ◽  
Author(s):  
Mikhail Kaban ◽  
Alexei Gvishiani ◽  
Roman Sidorov ◽  
Alexei Oshchenko ◽  
Roman Krasnoperov
Keyword(s):  
East European Platform ◽  
Sedimentary Cover ◽  
Gravity Anomalies ◽  
Sedimentary Basins ◽  
The Caucasus ◽  
Near Surface ◽  
New Model ◽  
Origin And Evolution ◽  
East European ◽  
Bouguer Anomalies

<p><span>A new model has been developed for the density and thickness of the sedimentary cover in a vast region at the junction of the southern part of the East European Platform, the Pre-Caucasus and some structures adjacent to the south, including the Caucasus. Structure and density of sedimentary basins was studied by employing the approach based on decompensation of gravity anomalies. Decompensative correction for gravity anomalies reduces the effect of deep masses providing compensation of near-surface density anomalies, in contrast to the conventional isostatic or Bouguer anomalies. . The new model of sediments, which implies their thickness and density, gives a more detailed description of the sedimentary thickness and density and reveals new features which were not or differently imaged by previous studies. It helps in better understanding of the origin and evolution of the basins and provides a background for further detailed geological and geophysical studies of the region.</span></p>

Musings over sedimentary basin evolution

1982 ◽  
Vol 305 (1489) ◽  
pp. 325-338 ◽  
Keyword(s):  
Thermal Effects ◽  
Sedimentary Basin ◽  
Sedimentary Basins ◽  
The Other ◽  
Basin Evolution ◽  
Hand Search ◽  
Origin And Evolution ◽  
Other Hand ◽  
Detailed Surface ◽  
Important Evidence

Field geologists and explorationists are of necessity immersed in numerous very detailed surface and subsurface observations. They are often perplexed by the choice of relatively simple geophysical models that so elegantly explain the origin and evolution of sedimentary basins. Geophysicists, on the other hand, search for a simple theme to explain the origin of sedimentary basins and, much like managers, are often impatient with lengthy detailed geological discourse that often uses fancy jargon to hide the very real difficulty that geologists have in separating important evidence from mere encyclopaedic description. The following musings address the quality and limitations of geologic and geophysical evidence that may be used to evaluate the relative roles of stress, thermal effects and gravity loading, which have been so lucidly summarized by M. H. P. Bott in the preceding summary. The fine papers presented during this meeting, of course, have led to significant modifications of some of my earlier thoughts. Because these have been previously published elsewhere (Bally & Snelson 1980; Bally 1980), they are summarized here only for the convenience of the reader.

Origin and evolution of smectites in Recent marine sediments of the NE Atlantic

Clay Minerals ◽  
1985 ◽  
Vol 20 (3) ◽  
pp. 335-346 ◽  
Author(s):  
M. Parra ◽  
P. Delmont ◽  
A. Ferragne ◽  
C. Latouche ◽  
J. C. Pons ◽  
...  
Keyword(s):  
Comparative Study ◽  
Marine Environment ◽  
Marine Sediments ◽  
Sedimentary Environment ◽  
Sedimentary Basins ◽  
Soil Environment ◽  
Ne Atlantic ◽  
Origin And Evolution ◽  
Hydrothermal Origin

AbstractPresent-day marine sediments around the emerged basaltic areas of Iceland and the Faeroe Islands are characterized by the abundance and predominance of smectites. Smectites increase regularly and systematically near volcanic areas. Their origin from (i) meteoric/deuteric weathering, (ii) hydrothermal products, (iii) neoformation in the marine environment or (iv) transformation during their transport to or stay in oceanic regions is considered in a comparative study of three types of environments on or near the Faeroe Islands. These are (1) a basaltic environment where phyllite minerals of deuteric and hydrothermal origin are abundant; (2) a soil environment formed on basaltic flows; (3) a marine sedimentary environment within adjacent sedimentary basins. This investigation clearly shows the link between hydrothermal and deuteric saponite-celadonite in basalt, Fe,Mg-smectite in Faeroe soils and Fe-smectite in marine sediments.

Noble gases in formation fluids from deep sedimentary basins: a review

1987 ◽  
Vol 2 (5-6) ◽  
pp. 621-627 ◽  
Author(s):  
Emanual Mazor ◽  
Adi Bosch
Keyword(s):  
Noble Gases ◽  
Sedimentary Basins

scholarly journals Changes in deep groundwater flow patterns related to oil and gas

2021 ◽  
Author(s):  
Keegan Jellicoe ◽  
Jennifer McIntosh ◽  
Grant Ferguson
Keyword(s):  
Groundwater Flow ◽  
Oil Recovery ◽  
Oil And Gas ◽  
Regional Scale ◽  
Sedimentary Basins ◽  
Flow Patterns ◽  
Gas Production ◽  
Deep Groundwater ◽  
Injection Wells ◽  
Basin Scale

Large volumes of saline formation water are both produced from and injected into sedimentary basins as a by-product of oil and gas production. Despite this, the location of production and injection wells has not been studied in detail at the regional scale and the effects on deep groundwater flow patterns (i.e. below the base of groundwater protection) possibly driving fluid flow towards shallow aquifers remain uncertain. Even where injection and production volumes are equal at the basin scale, local changes in hydraulic head can occur due to the distribution of production and injection wells. In the Canadian portion of the Williston Basin, over 4.6 x 109 m3 of water has been co-produced with 5.4 x 108 m3 of oil, and over 5.5 x 109 m3 of water has been injected into the subsurface for saltwater disposal or enhanced oil recovery (EOR). Despite approximately equal values of produced and injected fluids at the sedimentary basin scale over the history of development, cumulative fluid deficits and surpluses per unit area in excess of a few 100 mm are present at scales of a few 100 km2. Fluid fluxes associated with oil and gas activities since 1950 likely exceed background groundwater fluxes in these areas. Modelled pressures capable of creating upward hydraulic gradients are predicted for the Midale Member and Mannville Group, two of the strata with the highest amounts of injection in the study area. This could lead to upward leakage of fluids if permeable pathways, such as leaky wells, are present.

Water stable isotopes, radiocarbon, noble gases and krypton-81 study of thermal groundwater from Upper to Mid-Pleistocene recharge age in deep aquifers of Argentina.

2021 ◽  
Author(s):  
Daniel Martinez ◽  
René Albouy ◽  
Leandro Bertolin ◽  
Wei Jiang ◽  
Eduardo Kruse ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Noble Gases ◽  
Sedimentary Basins ◽  
Water Soluble ◽  
Water Age ◽  
Rock Interaction ◽  
Application Range ◽  
Carbon 14 ◽  
Deep Aquifers ◽  
Colorado Basin

<p>Recharge environmental conditions and residence time, can be studied by the application of different tracers. Several tracers are useful as proxies of the environmental recharge conditions, such as water stable isotopes deuterium and oxygen-18, and the dissolved noble gases. Other tracers are applied in order to know when the recharge occurred. Carbon-14 dating is a widely applied method for dating old groundwater, having an application range up to around 30 ky. Noble gases, as non-reactive and water-soluble substances, constitute useful tracers for studying different processes in hydrologic cycles. One of the applications is dating very old groundwater beyond the range of <sup>14</sup>C. It can be done in a semi-quantitative way by the accumulation of <sup>4</sup>He, and quantitatively through the radionuclide <sup>81</sup>Kr (t<sub>1/2</sub> = 229,000 y), a more robust method for dating groundwater up to 1.3 million years.</p><p>The province of Buenos Aires, Argentina, hosts three deep sedimentary basins, from north to south, Salado, Claromecó and Colorado, with areas of 85,000 km<sup>2</sup>, 3,100 km<sup>2</sup> and 125,000 km<sup>2</sup>, respectively. In these basins, a thick continental sequence of Neogene sediments contains confined thermal aquifers, at depths from hundreds meters to more than 1 km. The recharge conditions and the water age of the Neogene aquifers are studied through water stable isotopes, <sup>4</sup>He and <sup>81</sup>Kr tracers.  10 deep wells were sampled for δ<sup>2</sup>H, δ<sup>18</sup>O, <sup>3</sup>H, <sup>14</sup>C, for noble gases using clamped copper tubes, and for <sup>81</sup>Kr with a gas extractor. <sup>4</sup>He analyses were performed at the IAEA laboratory by mass spectrometry, and <sup>81</sup>Kr at the ATTA laboratory of USTC.</p><p><sup>3</sup>H contents were not detectable in all of the cases, thus no young water components exist. By plotting the isotopic results in a δ<sup>2</sup>H vs δ<sup>18</sup>O diagram, four groups of samples can be recognized. Group 1 includes Colorado basin isotopically depleted samples (δ<sup>18</sup>O from -6.5 to -7.5 ‰) along a line parallel to the GMWL and the present LMWL, but with a higher deuterium-excess (<em>d</em>). Samples in G1 have a Ne/He ratio around 0.6. <sup>14</sup>C and <sup>81</sup>Kr ages were from 10 ky to 40 ky. Group 2 includes the samples of the borders of the Salado basin, being isotopically more enriched (δ<sup>18</sup>O from -3 to -4.5 ‰) and with a lower <em>d</em> than present precipitation, a Ne/He ratio from 0.2 to 0.8 and one sample with <sup>81</sup>Kr age of 640 ky. Group 3 is formed by brines from the Colorado basin, a Ne/He ratio in the range of 1E-02 to 1E-04, and <sup>81</sup>Kr in ages around 900 ky, and are along a line of slope 1.9, showing a <sup>18</sup>O shift. Finally the Group 4 formed by samples at the axis of Salado basin, are isotopically enriched (δ<sup>18</sup>O from -0.5 to -3.7 ‰) along a line of slope 3.9 resembling and evaporation line. However, these samples of <sup>81</sup>Kr ages of 1000 ky and Ne/He ratio of 2E-03, showed a high correlation Cl- vs δ<sup>18</sup>O, with increasing values from West to East. This suggest a mixing with a brine or an increasing water-rock interaction.</p>

Investigation of paleoclimate signatures in Sfax deep groundwater (Southeastern Tunisia) using environmental isotopes and noble gases

2020 ◽  
Vol 547 ◽  
pp. 208-219 ◽  
Author(s):  
Rim Trabelsi ◽  
Takuya Matsumoto ◽  
Kamel Zouari ◽  
Mahdi Trabelsi ◽  
Bhishm Kumar
Keyword(s):  
Noble Gases ◽  
Environmental Isotopes ◽  
Deep Groundwater

scholarly journals Environmental Isotope Study (14C, 13C, 18O, D, Noble Gases) on Deep Groundwater Circulation Systems in Hungary With Reference to Paleoclimate

Radiocarbon ◽  
1989 ◽  
Vol 31 (03) ◽  
pp. 902-918 ◽  
Author(s):  
Martin Stute ◽  
Jozsef Deak
Keyword(s):  
Cross Sections ◽  
Isotope Ratio ◽  
Noble Gases ◽  
Environmental Isotopes ◽  
Carbonate Dissolution ◽  
Deep Groundwater ◽  
Α Decay ◽  
Groundwater Circulation ◽  
Groundwater Samples ◽  
Isotope Study

We have studied environmental isotopes and noble gases in groundwater samples from various locations in the Great Hungarian Plain along two selected hydrogeological cross-sections of ca 100km. The 14C groundwater ages were corrected hydrochemically and compared with age information derived from excess helium due to 4He from α-decay of U and Th and their daughter nuclides within the aquifer and to He accumulation from the crustal (and mantle) He flux. In correcting the 14C groundwater ages, we considered carbonate dissolution under open and closed system conditions in the infiltration areas. Non-radioactive reduction of the 14C/12C isotope ratio also plays an important role due to the addition of “dead” carbon species to groundwater along its subsurface pathway. High (corrected) 14C ages, which fall into the last global cold period, are supported by significantly lower heavy stable isotope values as well as lower temperatures derived from the noble gases Ne, Ar, Kr and Xe.

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