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Taking Full Use of Achievements of Remote Sensing and Geophysics in Exploration of Potash Deposit in China
Author(s) -
ZHANG Yujun,
YAO Fojun
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12380_55
Subject(s) - beijing , china , metallogeny , chinese academy of sciences , zhàng , library science , citation , potash , computer science , mining engineering , geology , history , archaeology , geochemistry , sphalerite , fertilizer , chemistry , organic chemistry , pyrite
2.1 Gamma-spectrometric well-logging Because of the gamma-radiation of natural isotope K40, radiometric geophysics is one of the few geophysical methods that can be used for direct detection of a certain element (Fig. 1). The gamma spectrometric well-logging and bore-hole gamma spectrometer were proposed and developed by us in 1963 which has been updated 5 times up to the 1980s. The 5 updates are: 205-shallow, 205-deep, NC-75, NC-76 and JHW-1. The gamma spectrometer well logging method and bore hole gamma spectrometers has been successfully applied in 6 provinces: the most effective results were obtained in Yunnan, Sichuan and Hubei provinces. Ischelite and glaserite (with 16.8% of KCl) were found by gamma-spectrometric well-logging in 1972. A bore-hole radioactivity-spectra interactive interpretation software system (HRSIS) was developed in 1995.