Page 22 - Geochemical Remote Sensing of The Sub-Surface
P. 22
Contents XXI
Blind and buried mineral deposits in wet climates ................................................ 422
Sampling media ......................................................................................................... 427
Atmospheric air .................................................................................................... 427
Soil gas ................................................................................................................. 430
Soil ........................................................................................................................ 431
Comparison of soil and soil gas ............................................................................ 433
Rocks .................................................................................................................... 434
Recommended analytical procedures ........................................................................ 435
Conclusions ............................................................................................................... 437
Chapter 13. Discrimination of mercury anomalies ....................................................................... 439
Z. Hu
Introduction ............................................................................................................... 439
Method ...................................................................................................................... 440
Case histories ............................................................................................................ 440
Traverses over known mineral deposits ................................................................ 440
Regional traverse .................................................................................................. 444
Regional grid ........................................................................................................ 445
Discussion ................................................................................................................. 447
Conclusions ............................................................................................................... 448
Chapter 14. Oxygen and carbon dioxide in soil air ...................................................................... 451
J.S. Lovell
Introduction ............................................................................................................... 451
Oxygen and carbon dioxide in the subsurface ........................................................... 452
Sampling and analytical methods .............................................................................. 457
Oxygen and carbon dioxide analysers ................................................................... 457
Orstat gas analyser ................................................................................................ 459
Draeger tubes ........................................................................................................ 459
Gas chromatography and mass spectrometry ........................................................ 460
Case histories ............................................................................................................ 461
Russia .................................................................................................................... 461
Azerbaijan ............................................................................................................. 462
Kyrgyzstan ............................................................................................................ 463
Namibia ................................................................................................................ 463
Johnson Camp, Arizona ........................................................................................ 464
Colorado Plateau, Arizona .................................................................................... 466
Discussion ................................................................................................................. 468
Conclusions ............................................................................................................... 469
References .................................................................................................................................... 471
Author index ................................................................................................................................. 513
Geographical index ....................................................................................................................... 529
Petroleum and mineral deposit index ............................................................................................ 533
Subject index ................................................................................................................................ 537