Coastal aquifer system in late Pleistocene to Holocene deposits at Horonobe in Hokkaido, Japan

Ikawa, Reo; Machida, Isao; Koshigai, Masaru; Nishizaki, Seiji; Marui, Atsunao

doi:10.1007/s10040-014-1106-4

Cited by 24 publications

(17 citation statements)

References 19 publications

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“…These wells withdraw water from confined aquifers below the aquitard, and they have relatively stagnant nature. Indeed, the groundwater from well V was depleted in 2 H and 18 O compared with the other wells (Kashiwaya et al, 2014), and Ikawa et al (2014) concluded that the groundwater was recharged during the glacial period from 12 ka to 42 ka.…”

Section: Hydrogeochemical Environment and Groundwater Flow Systems Inmentioning

confidence: 97%

“…Porewater depleted in heavy isotopes (D and 18 O) was found in the lower alluvial sediments and upper Sarabetsu formation. Ikawa et al (2014) inferred that this depletion was caused by the so-called ''temperature effect'' and that the light porewater was recharged during the last ice age.…”

Section: Terrain Geological Setting and Climatic Conditions Of The mentioning

confidence: 98%

“…When the groundwater is considered to be recharged in the marginal hilly area as Ikawa et al (2014), the CFC depletion found in the groundwater supplied from the Sarabetsu and Keifoku formations can be attributed, at least partly, to sorption by organic carbon in the lignite and peat in the aquifers. In particular, the NSW were found to be oxic and oxidative, so the effect of CFC degradation must be limited.…”

Section: Cfc Depletion Mechanisms Interpreted From the Hydrogeochemicmentioning

confidence: 99%

“…The National Institute of Advanced Industrial Science and Technology (AIST) of Japan excavated several boreholes in the Hamasato area to develop techniques for surveying geological phenomena specific to coastal regions, such as seawater intrusion. Ikawa et al (2014) assessed the groundwater flow regime between the surface and 1000 m deep, based on the chemical and isotopic properties of porewater recovered from the cores created from the AIST boreholes. Porewater depleted in heavy isotopes (D and 18 O) was found in the lower alluvial sediments and upper Sarabetsu formation.…”

Section: Terrain Geological Setting and Climatic Conditions Of The mentioning

confidence: 99%

See 3 more Smart Citations

Multiple tracer study in Horonobe, northern Hokkaido, Japan: 2. Depletion of chlorofluorocarbons (CFCs) estimated using 3 H/ 3 He index and lumped parameter models

Kashiwaya

Hasegawa

Nakata

et al. 2015

Journal of Hydrology

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Section: Hydrogeochemical Environment and Groundwater Flow Systems Inmentioning

confidence: 97%

Section: Terrain Geological Setting and Climatic Conditions Of The mentioning

confidence: 98%

Section: Cfc Depletion Mechanisms Interpreted From the Hydrogeochemicmentioning

confidence: 99%

Section: Terrain Geological Setting and Climatic Conditions Of The mentioning

confidence: 99%

See 2 more Smart Citations

Multiple tracer study in Horonobe, northern Hokkaido, Japan: 2. Depletion of chlorofluorocarbons (CFCs) estimated using 3 H/ 3 He index and lumped parameter models

Kashiwaya

Hasegawa

Nakata

et al. 2015

Journal of Hydrology

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“…Clostridiales Alkalibacter Anaerovirgula Garnova et al, 2004;Pikuta et al, 2006 Desulfuromonadales Pelobacteraceae Schink and Pfennig, 1982 Oceanospirillales Oleibacter Type genus n Teramoto et al, 2011Vibrionales Pseudoalteromonas Gauthier et al, 1995Ikawa et al 2014 FISH Archaea…”

Section: Rhodobacterales Sphingomonadalesmentioning

confidence: 99%

Characteristics of Microbial Distribution in Deep Groundwater in Horonobe Coastal Area, Hokkaido

Sugiyama

Ibara

Tsujimura

et al. 2019

J. Japan Soc. Hydrol. and Water Resour.

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北海道幌延地域沿岸部の深層地下水における微生物分布の特徴 700 m 715 m 2.68 0.03 10 3 cells/mL FISH Bacteria 14.9 943 m 1.87 0.09 10 5 cells/mL Bacteria 48.8 キーワード杉山歩 1， 2) † 井原哲夫 1) 辻村真貴 3) 永翁一代 3， 4) 加藤憲二 4) 丸井敦尚 5) 1) 株式会社アサノ大成基礎エンジニアリング 110-0014 2-8-7 2) 筑波大学大学院生命環境科学研究科持続環境学専攻

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Controls on the occurrence of beach‐bar sandstone in a Neogene saline lake basin, southwestern Qaidam Basin, China

Wang¹,

Song²,

Chen³

et al. 2022

Geological Journal

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To identify the developmental characteristics and controlling factors of the beach‐bar sandstone in saline lake basins in the Qaidam Basin, China, the lithology and bedding structure of some representative outcrops of the Neogene saline lake basins were comprehensively investigated by means of experimental test data of local drilling cores, casting thin sections, and grain size, together with field outcrops in the basin and the modern salt lake deposition record of Qinghai Lake. Two types of sand bodies in the saline lake basins, that is, delta sand bodies and shore‐shallow lake beach‐bar facies were revealed. Neogene saline lake basins were found to host widespread beach‐bar sand bodies. Lithologically, the sand bodies were composed of fine‐grained sandstone and siltstone, with wavy bedding, low‐angle cross‐bedding, and bimodal cross‐bedding. The beach‐bar sandstone was characterized by multi‐layer superimposition, lateral migration, and NW–SE wide‐coverage continuation. Drilling data showed that beach‐bar sand bodies extended from 10 to 35 km in width and most of them occurred 3–15 km away from braided river delta front. It has been predicted that the total area of beach‐bar sand bodies of 14 sand groups in the Neogene spread across 5,000 km2. Four factors, that is, lake water salinity, terrigenous input, palaeogeomorphology, and monsoons, controlled the construction of the beach‐bar sand bodies developed in the Neogene saline lake of the Qaidam Basin. We can conclude that the settling velocity and transport distance of the sand bodies were affected by the water body salinity in such saline lake basins. Also, the distribution range of the beach‐bar sand bodies was affected by the clastic input from a terrigenous provenance. Furthermore, the wide‐coverage distribution and local enrichment of the beach‐bar sandstone were affected by palaeogeomorphology, and the distribution direction of the beach‐bar sandstone was affected by the driving effect of NW monsoons. We propose a deposition model of the beach‐bar sandstone in saline lake basins that can predict favourable beach‐bar sand body regions, to support the major discoveries of lithologic traps in southwestern Qaidam, China.

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Coastal aquifer system in late Pleistocene to Holocene deposits at Horonobe in Hokkaido, Japan

Cited by 24 publications

References 19 publications

Multiple tracer study in Horonobe, northern Hokkaido, Japan: 2. Depletion of chlorofluorocarbons (CFCs) estimated using 3 H/ 3 He index and lumped parameter models

Multiple tracer study in Horonobe, northern Hokkaido, Japan: 2. Depletion of chlorofluorocarbons (CFCs) estimated using 3 H/ 3 He index and lumped parameter models

Characteristics of Microbial Distribution in Deep Groundwater in Horonobe Coastal Area, Hokkaido

Controls on the occurrence of beach‐bar sandstone in a Neogene saline lake basin, southwestern Qaidam Basin, China

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