Geochemical Exploration 1980

Introduction

Presidential Address

One Man's View of a Research Gap

Water and Gas Geochemistry

Simultaneous Determination of Sulfide, Polysulfides and Thiosulfate as an Aid to Ore Exploration

Hydrogeochemical Exploration for Uranium Ore Deposits: Use of the Computer Model WATEQFC

Mercury and Mercury Compounds in Surface Air, Soil Gas, Soils and Rocks

Meteorological Noise in Crustal Gas Emission and Relevance to Geochemical Exploration

A Mercury Vapor Survey in an Area of Thick Transported Overburden Near Shanghai, China

Rock Geochemistry

the Geochemistry of the Leached Capping of the La Granja Porphyry Copper Deposit, Peru

Mechanisms of Ore Formation and Primary Dispersion at the Dexing Porphyry Copper Deposit, Jiangxi, and their Implications in Geochemical Exploration

Regional Reconnaissance Exploration Rock Geochemistry for Massive Sulphides, New Brunswick, Canada

Geochemical Dispersion in Wallrocks Associated with the Norbec Deposit, Noranda, Quebec

Lithogeochemical Exploration Data in Sulphide Prospecting in Northern Sweden

the Geochemistry of the Sedimentary Rocks in the Vicinity of the Tom Pb-Zn-Ba Deposit, Yukon Territory, Canada

Uranium Anomalies in Paleo-Aquifers Near Sandstone-Type Uranium Deposits in the Devonian Catskill Formation of Pennsylvania

Uranium Redistribution in Weathered Conglomerates of the Early Precambrian Pongola Supergroup, South Africa — Inferences from a Study by Alpha Spectrometry and Fission Track Micromapping

The Use of Petroleum-Well Samples and Data for Geochemical Prospecting of Metals in Sedimentary Basins

Geochemical Prospecting for Stratabound Mineralization in Late Precambrian Sediments of East Greenland (72-74°N)

A New Way of Interpreting Trace Element Concentrations with Respect to Modes of Mineral Formation

Geochemistry of Apatites in the Granitic Rocks of the Molybdenum, Tungsten, and Barren Provinces of Southwest Japan

Application of Various Geochemical Proximity Indicators to the Tin Favorability of South-Sardinian Granites

Drainage Geochemistry

Pathfinder Applications of Arsenic, Antimony and Bismuth in Geochemical Exploration

Anomalous Geochemical Patterns from Northern Sumatra: Their Assessment in Terms of Mineral Exploration and Regional Geology

Geochemical Evidence for a Brooks Range Mineral Belt, Alaska

Exploration for Scheelite in East Greenland — A Case Study

Geochemistry of Stream Sediments Along the Western Coast of the Gulf of Elat (Aqaba)

Metal Transport, Partition and Fixation in Drainage Waters and Sediments in Carbonate Terrain in Southeastern Ontario

Evaluation of Lake Sediment Surveys Using the Relationship of Metal Tenor to Organic Content

Soil and Vegetation Geochemistry

the Biogeochemical Expression of Deeply Buried Uranium Mineralization in Saskatchewan, Canada

Geochemical Soil Prospecting in Northwest Kalimantan, Indonesia

Trace-Element Patterns in Lateritic Soils Applied to Geochemical Exploration

the Use of Soil Geochemistry in Outlining Phosphate Deposits, Northern and Southern Venezuela

National Geochemical Exploration Programs

Geochemical Exploration in China

Developments of Geochemical Methods for Ore Prospecting in Bulgaria

Computer and Statistical Techniques

Q'Gas: A Minicomputer-Based System to Aid in the Interpretation of Exploration-Oriented Geochemical Data

Statistical Analysis of Stream Sediment Data from the Ife-Llesha Area of Southwest Nigeria

Analytical and Selective Extraction Techniques

Organic Matter Scavenging of Copper, Zinc, Molybdenum, Iron and Manganese, Estimated by a Sodium Hypochlorite Extraction (pH 9.5)

The Partitioning of Copper Among Selected Phases of Geologic Media of Two Porphyry Copper Districts, Puerto Rico

Elemental Interferences in the Analysis of Uranium By Delayed-Neutron Counting

Application of Radionuclide Energy-Dispersive X-Ray Fluorescence Analysis in Geochemical Prospecting

Manganese Dioxide Causes Spurious Gold Values in Flame Atomic-Absorption Readings from Hbr-Br2 Digestions

Laser Fluorometric Analysis of Plants for Uranium Exploration

A Contribution to Geochemical Prospecting for Fluorite

Kinetics of the Selective Extraction of Iron Oxides in Geochemical Samples. Association Between Fe and Cu in Acid Brown Soils

Selective Extraction Procedures Applied to Geochemical Prospecting in An Area Contaminated By Old Mine Workings

Geochemical Exploration for Petroleum

C24—C27 Degraded Triterpanes in Nigerian Petroleum: Novel Molecular Markers of Source/Input Or Organic Maturation?

A Contribution to Geochemical Correlation Between Crude Oils and Potential Source Rocks in the Eastern Molasse Basin (Southern Germany)

The Organic Matter of a Gulf Coast Well Studied by a Thermal Analysis—Gas Chromatography Technique

Paper Belonging to the Section Rock Geochemistry: Geochemical Exploration of a Precambrian Batholith, Source of a Cu-W Mineralization of the Tourmaline Breccia Type in Southern Finland