High resolution airborne magnetics and gamma-ray spectrometry for reconnaissance geological mapping

Breiner, Sheldon

doi:10.1016/0016-7142(74)90063-5

Cited by 1 publication

(2 citation statements)

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“…The surveyed area covered by AGS in ZZ was about 3800 km 2 , between 112859 0 -113835 0 E and 22803 0 -22840 0 N, and 4660 km 2 in SZ, between 113840 0 -114828 0 E and 22832 0 -23808 0 N. In-situ gamma ray spectrometry and dose rate survey were carried out in ZZ and covered an area of about 100 km 2 . Geological strike was relatively simple in ZZ, but more complicated in SZ.…”

Section: Geological Background Of Surveyed Areasmentioning

confidence: 99%

“…An airborne gamma-ray spectrometer normally consists of a NaI(Tl) detector and spectroscope with 256 or 512 channels. This method has been successfully used for geological mapping, uranium exploration, and mineral resources exploration since it was first used for oil and gas prospecting in the 1960s [1][2][3][4]. The applications of the method have been expanded to environmental estimation of ionization radiation and the determination of Cesium-137 radioactive concentration in soil after the chernobyl nuclear reactor accident throughout Sweden, Russia, France, and so on [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Mapping the terrestrial air-absorbed gamma dose rate based on the data of airborne gamma-ray spectrometry in southern cities of China

Xiong

Wang

Fan

et al. 2012

Journal of Nuclear Science and Technology

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An environmental radioactivity survey by Airborne Gamma-ray Spectrometry (AGS) on a large scale was undertaken in Zhuhai Zone (ZZ) and Shenzhen Zone (SZ), which include major cities in southern China, covering areas of 3800 km 2 and 4660 km 2 , respectively. The estimated dose rates by AGS have been compared with observed results by ionization chamber and portable dosemeter. Maps of the terrestrial dose rate at 1m above ground level have been calculated based on the data of AGS. The mean dose rates are 84.37 + 51.69 and 82.10 + 32.98 nGy/h in ZZ and SZ, and the maximum rates are 343.11 and 368.36 nGy/h, respectively. Dose rates in some places are above 180 nGy/h; the areas covered where 149 km 2 in ZZ and 43 km 2 in SZ. The dominant geological conditions that evidently contribute to the radioactive anomalies are outcrops of Middle and Late Jurassic and Cretaceous biotitic-granite. The growth of industrialization and urbanization has dramatically altered radiation background. Stone mining results in the increase of radiation levels with maximum dose rates approaching 368.36 nGy/h in an open pit. The investigation results provide valuable background data and give a good example for mapping nationwide natural radiation terrestrial dose rates in China by AGS.

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Section: Geological Background Of Surveyed Areasmentioning

confidence: 99%