New Geologic Map—Southern Eureka Mining District



Title: Geologic map of the southern part of the Eureka mining district and surrounding areas of the Fish Creek Range, Mountain Boy Range, and Diamond Mountains, Eureka and White Pine counties, Nevada
Sean P. Long, Christopher D. Henry, John L. Muntean, Gary P. Edmondo, and Robert D. Thomas
Year: 2014
Series: Map 183
Version: supersedes Open-File Report 2012-06
Format: two plates: both 55 x 39 inches, color; text: 36 pages with some color, page 35 is 40 x 14 inches, page 36 is 11 x 15.5 inches
Scale: 1:24,000

This map is a 1:24,000-scale, transect-style geologic map through the southern Diamond Mountains, the northern Fish Creek Range, and the southern Mountain Boy Range. The map area also passes through the southern part of the historical, and actively explored, Eureka mining district. The map is accompanied by three cross sections, which illustrate the deformation geometry both above and below the modern erosion surface, a detailed description of map units, a summary of the geologic history of the map area, and a description of mineral deposits in the Eureka mining district. In addition, new data on the distribution, petrographic and chemical characteristics, and timing of the late Eocene Eureka volcanic center is included. This report represents a detailed analysis of the stratigraphy and structure of a classic Great Basin geological locality.

Plate 1 is the geologic map with cross section A.
Plate 2 contains cross sections B and C.

This map was prepared as part of the STATEMAP component of the National Cooperative Geologic Mapping Program in cooperation with the U.S. Geological Survey and with support from the Nevada Division of Minerals, the Geological Society of Nevada, and Timberline Resources Corporation.

View or purchase Map 183 here:

Purchase GIS files for Map 183 here:

Nevada Mineral Industry 2013 now available!


Title: The Nevada mineral industry 2013
John L. Muntean, David A. Davis, Lisa Shevenell, and Alexandra Reid
Year: 2015
Series: Mineral Industry MI-2013
Format: 158 pages, includes color

Starting in 1979, NBMG has issued annual reports that describe mineral and geothermal activities and accomplishments in Nevada, and include statistics of known gold and silver deposits. This report describes mineral, oil and gas, and geothermal activities and accomplishments in Nevada in 2013: production statistics, exploration and development including drilling for petroleum and geothermal resources, discoveries of orebodies, new mines opened, and expansion and other activities of existing mines. Statistics of known gold and silver deposits, and directories of mines and mills are included.

View or purchase MI-2013 here:

Calendar Contest—Ends May 31, 2015

Courtesy: Jack Hursh

Courtesy: Jack Hursh

Do you have an amazing photo of Nevada geology that you would like to see in the 2016 Nevada Geology Calendar?

This is your last chance to enter the photo contest for the 2016 calendar! Here are the details for the 2016 calendar contest:

  • Deadline for entries is May 31, 2015.
  • Photos need to be taken in Nevada. A location description and/or GPS coordinates should accompany submissions along with description.
  • High-quality, high-resolution photo files of at least 300 dpi are required for quality printing.
  • You may enter as many photos as you wish.
  • Email submissions to Jack Hursh (
  • NBMG Cartographers will make the final decision on the winning photos.
  • Prizes will be awarded for first-, second-, and third-place winners.

Details here:

BLM Job Announcements


Message from BLM: We are pleased to announce new, exciting positions available at BLM – BUREAU OF LAND MANAGEMENT.   It is our hope that qualified, career oriented individuals at your organization or other professionals known to you will actively consider this position and apply accordingly.  Efforts on your part to disseminate this information are greatly appreciated.

Position Information:
Job Description:  Geographic Information System Specialist;
Announcement Number:  NV Merit-2015-0219;
Location(s) of position:  Winnemucca, NV, US;
Salary:  $48,403 – $76,131;
Applications will be accepted until:  05/22/2015.
For additional information on this job posting, please go to:!execute.hms?orgId=3&jnum=112319[]

Position Information:
Job Description:  Planning and Environmental Coordinator;
Announcement Number:  NV Merit-2015-0212;
Location(s) of position:  Battle Mountain, NV, US;
Salary:  $58,562 – $91,255;
Applications will be accepted until:  05/26/2015.
For additional information on this job posting, please go to:!execute.hms?orgId=3&jnum=112296[]

Position Information:
Job Description:  Biological Science Technician (Wildlife);
Announcement Number:  OR-DEU-2015-0123;
Location(s) of position:  Eugene, OR, US;
Salary:  $35,609 – $46,294;
Applications will be accepted until:  05/18/2015.
For additional information on this job posting, please go to:!execute.hms?orgId=3&jnum=112186[]

Position Information:
Job Description:  Archaeologist;
Announcement Number:  NV Merit-2015-0217;
Location(s) of position:  Battle Mountain, NV, US;
Salary:  $48,403 – $76,131;
Applications will be accepted until:  05/21/2015.
For additional information on this job posting, please go to:!execute.hms?orgId=3&jnum=112309[]

Position Information:
Job Description:  Budget Analyst;
Announcement Number:  NV Merit-2015-0197;
Location(s) of position:  Reno, NV, US;
Salary:  $48,403 – $76,131;
Applications will be accepted until:  05/26/2015.
For additional information on this job posting, please go to:!execute.hms?orgId=3&jnum=112042[]

Position Information:
Job Description:  Management Assistant;
Announcement Number:  NV-DEU-2015-0120;
Location(s) of position:  Winnemucca, NV, US;
Salary:  $31,944 – $46,294;
Applications will be accepted until:  05/26/2015.
For additional information on this job posting, please go to:!execute.hms?orgId=3&jnum=112353[]

Position Information:
Job Description:  Management Assistant;
Announcement Number:  NV Merit-2015-0223;
Location(s) of position:  Winnemucca, NV, US;
Salary:  $31,944 – $46,294;
Applications will be accepted until:  05/26/2015.
For additional information on this job posting, please go to:!execute.hms?orgId=3&jnum=112351[]

GSN Symposium—May 14-23, 2015; NBMG will be at booth #19 at the GSN Symposium.


“Plan to attend the GSN Symposium, New Concepts and Discoveries, May 14-23, 2015 to be held at John Ascuaga’s Nugget in Reno/Sparks, Nevada. This is the seventh in a series of symposia designed to provide an international forum for scientific discussion of geological processes and their relationships to ore deposits.

Four days of talks will be accompanied by pre- and post-meeting field trips to the premier mining districts in Nevada. Pre- and post-meeting short courses will be offered. Posters and a full slate of excellent core shack displays from the Great Basin and beyond, along with vendor exhibits, will be on display throughout the meeting. A pre-meeting forum, is sponsored by the Society of Economic Geologists, is also scheduled.” (from GSN Symposium Registration Booklet)

The following NBMG faculty members will be participating in technical sessions at the Symposium: John Muntean, Jim Faulds, Chris Henry, Sean Long, Mike Ressel, and Nick Hinz.

More information on the GSN Symposium here:[][]

A message from John Muntean: “The GSN Symposium is held every five years, and it is by far the best way to get up to date on the geology, ore deposits, and exploration activity in Nevada and the Great Basin.  [The links above] provide an overview of the symposium and the list of speakers and talks for symposium’s technical sessions.  There are numerous field trips and short course before and after the trip.

In addition, a SEG Forum on the Diversity of Carlin-style Gold Deposits is being held May 17th.  We know much about the large Carlin-type deposits in Nevada but relatively little about similar deposits elsewhere in the world. This SEG Forum investigates whether these similar deposits have vastly different origins, or whether they are variations on a theme.

The Great Basin is one of the world’s greatest metallogenic provinces.  Despites its importance, relatively few researchers work in the area.  We hope that by enticing you to come to the Symposium you may decide to take on some of the many questions remaining about the geology and ore deposits of the Great Basin.”

Here are some publications of interest for post-meeting field trip participants:

You may find more on our publications page:

GBSSRL Open Monday May 18 for GSN Symposium Visitors

Courtesy: Charlotte Stock

Courtesy: Charlotte Stock

The Great Basin Science Sample and Records Library houses the NBMG Publication Sales and Information Office and the Geological Society of Nevada office.

Our normal hours are Tuesday to Friday (8-3), but we will be open on Monday May 18 this week only to accommodate GSN Symposium out-of-town visitors.

You may order publications on our shopping cart or phone in an order and request delivery at the GSN Symposium. Order by Monday May 18 for free delivery to the Symposium. You may pick up orders at GSN Symposium booth #19.

Nevada Petroleum & Geothermal Society Monthly Dinner Meeting: Thursday, May 7, 2015

NPGS logo
Benjamin N.M. Delwiche, Senior Geologist, Ormat Nevada, Inc.
Topic: A Geological Model for the McGinness Hills Geothermal Field thru Exploration and Development: Evidence and Implications

Ramada Reno Hotel
1000 East 6th Street, Reno, NV 89512
Cocktail Reception 6:30, Skyline Bar, 14th Floor

Paul Graham Drilling and Service Company
Resource Cementing
GEO Drilling Fluids, Inc.

Dinner Served at 7:00 PM
NPGS Members $20, Non-Members $23, Students $10

Abstract (partial)
Recent installation and commercial operation of two geothermal power plants at McGinness Hills (72 MW net total) located near Austin, NV, was achieved in two phases of development (2012 & 2015) and represents the successful execution of a geothermal exploration and development work flow. Prior to acquisition of a federal geothermal lease at the McGinness Hills project by Ormat in August of 2007, no geothermal leasing had occurred in the area, and all historical exploration drilling was related to metallurgical mineral interests. During the course of pre-drilling exploration, drilling exploration, and development drilling, a geological model was developed and aided in achieving incremental well field successes.  During the exploration campaign, some of the ambiguities in the geologic and hydrothermal environment interpretations were reduced by implementing and synthesizing a multitude of studies including geologic mapping, geophysics (gravity, CSAMT, MT, & aeromagnetics), geochemistry (fluid analyses and tracer studies), and exploration drilling (core and slim holes).  Although some ambiguities and uncertainties still persist, the current geological model describes a complex distribution of faults and rock-types containing the geothermal system at McGinness Hills and elucidates several possible key factors which may control and/or support permeability and heat flow associated with the system.

Please RSVP by Tuesday, May 5: RSVP Here

If you have RSVP’d, and find that you cannot attend, please notify NPGS as soon as you are able as NPGS will be charged for all no-shows.

Thank you for your consideration.


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