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SEG 45 Final_qx4 - Society of Economic Geologists

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44 <strong>SEG</strong> NEWSLETTER No 55 • OCTOBER 2003<br />

<strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong><br />

(in conjunction with Geological <strong>Society</strong> <strong>of</strong> Nevada’s<br />

Symposium 2005 – Window to the World)<br />

“Controversies on the Origin <strong>of</strong> World-Class<br />

Gold Deposits: Carlin and Witwatersrand”<br />

May 14, 2005 • Reno, Nevada<br />

The <strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong> is sponsoring a one-day<br />

forum to examine and discuss the origins <strong>of</strong> gold deposits in the<br />

Carlin and Witwatersrand camps. Despite their importance, there<br />

is still no general agreement on their origins. For the Witwatersrand,<br />

the debate between placer and hydrothermal origins, and<br />

variations in between, has raged since discovery in 1886. For<br />

Carlin-type deposits, theories <strong>of</strong> origin have swung from shallowhot<br />

spring deposits to distal products <strong>of</strong> porphyry copper deposits<br />

to deep mesothermal deposits.<br />

Understanding the origins <strong>of</strong> these deposits has immense<br />

implications not only for future exploration success but also for a<br />

better insight into special earth processes that lead to such large<br />

metal anomalies. In the tradition <strong>of</strong> the scientific debates <strong>of</strong> the<br />

nineteenth and early twentieth centuries, we plan a series <strong>of</strong> talks<br />

that give contrasting views to the origin <strong>of</strong> these deposits, followed<br />

by panel discussions between experts and open discussions<br />

with the audience.<br />

Although discussions will likely be animated, the emphasis will<br />

be on looking forward and identifying where we need to go in<br />

the future to better understand and explore for these deposits.<br />

Organizer: John Muntean (John_Muntean@placerdome.com)<br />

<strong>SEG</strong> Co-Sponsored<br />

XII Congreso Peruano<br />

de Geología<br />

Natural science generating knowledge,<br />

added value and evolution<br />

Lima, Perú<br />

October 26 - 29, 2004<br />

For further information and<br />

expression <strong>of</strong> interest, contact:<br />

Sociedad Geológica del Perú<br />

(sgp@sgp.org.pe)<br />

César E. Vidal (nycvidal@terra.com.pe)<br />

ANNOUNCEMENTS<br />

Northwest Mining Association<br />

Welcomes Back <strong>SEG</strong><br />

You won’t want to miss<br />

The Old and the New About<br />

the Geology <strong>of</strong> Zinc<br />

Presented by <strong>SEG</strong><br />

at<br />

Mining and <strong>Society</strong>:<br />

A Partnership into the Future<br />

Our 109th Annual Meeting,<br />

Exposition and Short Courses<br />

December 2–6, 2003<br />

Red Lion at the Park<br />

Spokane, Washington<br />

For complete program,<br />

exhibit and short course information<br />

contact Pat Heywood at NWMA<br />

Phone: (509) 624-1158 x 11 Fax: (509) 623-1241<br />

Email: pheywood@nwma.org<br />

Web: nwma@nwma.org<br />

• Geophysical Consulting, Survey Design,<br />

Data Interpretation<br />

• Subsurface Structural Mapping<br />

• Ground Water Delineation<br />

• Minerals Exploration<br />

• Rentals<br />

GEOPHYSICAL SERVICES<br />

• Equipment Sales<br />

• Physical Properties Lab<br />

Electromagnetic<br />

(EM) Techniques,<br />

Induced Polarization<br />

(IP) Techniques, Gravity,<br />

Magnetics, Shallow Seismic,<br />

& Downhole Techniques<br />

ZONGE<br />

ENGINEERING & RESEARCH ORGANIZATION<br />

1-800-523-9913 or 520-327-5501<br />

Fax 520-325-1588, seg@zonge.com, www.zonge.com<br />

Offices World Wide<br />

USA: -Tucson, Arizona -Sparks, Nevada -Anchorage & Fairbanks, Alaska<br />

Other: -Australia -Chile -Brazil -Indonesia<br />

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