GEOTECH

Presented at IV SIMPÓSIO BRASILEIRO DA SBGF – BRASÍLIA 2010 For a PDF of this paper click here …

Presented at the GRC and SEG For a PDF of this paper click here Summary A ZTEM™ (Z …

ZTEM™ airborne electromagnetic surveys over the Copaquire porphyry deposit, in northern Chile, were designed to map its alteration and structure due resistivity contrasts, to depth, based on successful applications of the method in north America.

The Romero gold copper zinc silver deposits are located in the Province of San Juan, Dominican Republic, approximately 165 km west-northwest of Santo Domingo. Romero and Romero South orebodies contain stratabound gold mineralization with copper, silver and zinc of intermediate sulphidation epithermal style. The gold mineralization is associated with disseminated to semi-massive sulphides, sulphide veinlets and quartz-sulphides within quartz-pyrite, quartz-illite-pyrite and illite-chlorite-pyrite alteration.

Presented at ASEG-PESA 2015, Perth, Australia For a PDF of this paper click here Summary As part of a …

ZTEM™ helicopter electromagnetic and aeromagnetic surveys were flown for epithermal gold and gold-skarn targets on the Aurea Norte Property in the Guerrero Gold Belt. Survey results supported by 2D-3D EM and magnetic inversions indicate that the Ana Paula mafic intrusive hosted epithermal style gold deposit features high magnetics and low resistivity at depth; whereas San Luis oxidized skarn-style deposit hosts weak magnetics with high resistivity at depth. Both trends appear to be influenced by NS regional structural controls.

For a PDF of this paper click here Summary Two airborne EM surveys were conducted over the Drybones …

For a PDF of this paper click here Introduction In April 2009, a ZTEM™ (Z-Axis Tipper Electromagnetic) survey …

ZTEM (Z-Axis Tipper Electromagnetic) surveys were conducted, on behalf of Geoscience BC (Project 2008-32), over the Mt. Milligan Property, belonging to Terrane Metals Corp. (Vancouver, BC) and situated in the Mackenzie region of central British-Columbia (Figure 1a), between October 15TH to 22ND, 2008. The ZTEM survey comprised airborne Tipper AFMAG (audio frequency electromagnetics) measurements, as well as aeromagnetics using a caesium magnetometer. The survey consisted of twenty five (25) approx. 8.0 km long, EW oriented flight lines, totaling 200 line-km, that were obtained at nominal 250m line spacings over an approximately 6 x 8 km area .