Case Study: The Evolution of Airborne Time Domain Electromagnetic Applications for Geologic Mapping; a Noranda Perspective

1998 ◽  
Vol 29 (1-2) ◽  
pp. 204-210 ◽  
Author(s):  
Michael J. Schaefer ◽  
John Gingerich ◽  
Jean Lemieux
Keyword(s):  
Time Domain ◽  
Geologic Mapping ◽  
Time Domain Electromagnetic

A large-scale field study in eastern Siberia using novel time-domain electromagnetic technology

2015 ◽  
Vol 3 (2) ◽  
pp. T109-T120 ◽  
Author(s):  
Sofia Davydycheva ◽  
Alexander Kaminsky ◽  
Nikolai Rykhlinski ◽  
Andrei Yakovlev
Keyword(s):  
High Resolution ◽  
Time Domain ◽  
Large Scale ◽  
Survey Design ◽  
Eastern Siberia ◽  
Scale Field ◽  
Large Scale Field ◽  
Time Domain Electromagnetic ◽  
Integrated Interpretation

We evaluated the results of a large-scale commercial project that illustrated the capabilities of advanced time-domain electromagnetic (TDEM) technologies powered with integrated interpretation of geologic and geophysical data. To study the hydrocarbon prospectivity of a field in Eastern Siberia, we developed a survey design, and then acquired, processed, and interpreted the TDEM data from 30 profiles (total length 772 km) covering an area of approximately [Formula: see text]. The data were acquired using the conventional TDEM and a novel high-resolution version of TDEM, the focused-source electromagnetic method. We described the geologic framework, data acquisition methodologies, and key results obtained using integrated TDEM, seismic, and well-logging data. The interpretation was used to select well locations for additional exploratory drilling. Postsurvey drilling supported our interpretation. The presented case study demonstrates the value of TDEM in the exploration workflow.

Water prospection in volcanic islands by Time Domain Electromagnetic (TDEM) surveying: The case study of the islands of Fogo and Santo Antão in Cape Verde

2016 ◽  
Vol 134 ◽  
pp. 226-234 ◽  
Author(s):  
F.J. Martínez-Moreno ◽  
F.A. Monteiro-Santos ◽  
J. Madeira ◽  
I. Bernardo ◽  
A. Soares ◽  
...  
Keyword(s):  
Time Domain ◽  
Cape Verde ◽  
Time Domain Electromagnetic ◽  
Volcanic Islands

Time‐domain electromagnetic imaging of a clayey confining bed in a brackish environment: A case study in the Kairouan Plain Aquifer (Kelbia salt lake, Tunisia)

2018 ◽  
Vol 32 (26) ◽  
pp. 3954-3965
Author(s):  
Cécile Finco ◽  
Coralie Pontoreau ◽  
Cyril Schamper ◽  
Sylvain Massuel ◽  
Gaghik Hovhannissian ◽  
...  
Keyword(s):  
Time Domain ◽  
Salt Lake ◽  
Electromagnetic Imaging ◽  
Time Domain Electromagnetic ◽  
Brackish Environment

Delineation of saltwater intrusion zones using the time domain electromagnetic method: the Nabeul-Hammamet coastal aquifer case study (NE Tunisia)

2012 ◽  
Vol 27 (14) ◽  
pp. 2004-2020 ◽  
Author(s):  
Fatma Trabelsi ◽  
Abdallah Ben Mammou ◽  
Jamila Tarhouni ◽  
Carlo Piga ◽  
Gaetano Ranieri
Keyword(s):  
Time Domain ◽  
Coastal Aquifer ◽  
Saltwater Intrusion ◽  
Electromagnetic Method ◽  
Time Domain Electromagnetic ◽  
The Time Domain

Helicopter time-domain electromagnetics — Newmont and the NEWTEM experience

Geophysics ◽  
2013 ◽  
Vol 78 (6) ◽  
pp. W45-W56 ◽  
Author(s):  
Perry A. Eaton ◽  
Robert G. Anderson ◽  
Steven V. Queen ◽  
Bruno Y. Nilsson ◽  
Eric Lauritsen ◽  
...  
Keyword(s):  
Time Domain ◽  
Original System ◽  
Geologic Mapping ◽  
Use Of Time ◽  
Different Types ◽  
Time Domain Electromagnetics ◽  
Time Domain Electromagnetic ◽  
Airborne Em ◽  
Mapping Information ◽  
Gold Bearing

Over the past two decades, the use of time-domain electromagnetic (EM) surveying systems, designed for an airborne helicopter-based platform, has risen in popularity. One of the first of these systems was developed and has been operated by Newmont Mining Corporation. The original system (NEWTEM I) and its more capable successor (NEWTEM II) were created to help our company explore for different types of mineral deposits, primarily gold bearing, as well as to provide general geologic mapping information in parts of the world that are often very difficult or expensive to explore otherwise. The NEWTEM system has some characteristics that have proven to be advantageous in terms of safety, cost of operation, spatial resolution, and the ability to map effectively at both ends of the resistivity scale. Our approach to the acquisition, processing, and interpretation of airborne EM data is specific to this system and to the goals of our gold-focused exploration programs. Using what is most often a locally derived helicopter, we are able to carry out a survey of whatever size our exploration program dictates and on a schedule that meets our company’s needs. Results from NEWTEM surveys have been used to identify conductive and resistive targets but more importantly to advance our general understanding of an area’s potential to host mineralization of interest to this company. We intended to provide a brief written account of the NEWTEM story for the scientific and exploration communities, including information about its design and capabilities, as well as how we process this type of data. Hopefully, this documentation will serve to inspire future developers, explorers, geoscientists, and airborne EM enthusiasts.

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