Archive | November 2013

2014 Nevada Geology calendar available!

Nevada Geology Calendar 2014

designed by Jack Hursh, Jennifer Mauldin, Chris Henry, and Nick Hinz

Calendar_2014_Ad

Click here for printable PDF of this advertisement.

13 x 9.5 inches, $10.00

This 12-month calendar for 2014 features a different geologic topic each month: Precarious Rocks, Geothermal, Sandstone, Basin and Range, Limestone, Tufa, Glaciation, Ash-Flow Tuff, Igneous Dikes, Canyons, Modern Mining, and Earthquake Faults. It is full of beautiful photos highlighting Nevada’s scenic wonders and also includes interesting facts about Nevada geology.

Click here to order http://www.nbmg.unr.edu/sales/pbsdtls.php?sku=CAL2014 or call (775) 682-8766.

Buy 10 or more calendars, and you will receive a 41% or greater discount.

Discount Schedule for the General Public:  http://www.nbmg.unr.edu/sales/discount_schedule_general_public.pdf

Note: If you place an order for 10 or more calendars, the shopping cart will complete your order showing the regular price. That is OK. When we process the order, we will reduce your total to reflect the discounted price before we submit the charge to VeriSign/PayPal. You will only be charged the discounted amount.

Walk-in purchase: Calendars are also available for sale at the Great Basin Science Sample and Records Library (2175 Raggio Parkway, Reno).

http://www.nbmg.unr.edu/Departments/GBSSRL/docs/GBSSRL_map_directions.pdf

If you bring a donation for the Food Bank of Northern Nevada, you may request some free topographic or geologic map wrapping paper (while supplies last).

Photo contest winners for 2014 calendar

Congratulations to the winners of the Nevada Geology Calendar 2014 photo contest!

Lane Griffin (January photo) – first prize
Mark Abrams (Nevada Geology photo) – second prize
Ken Krahulec (July photo) – third prize, tied
Steve Howell (November photo) – third prize, tied

Thank you all for your wonderful photo contributions.

We would also like to thank Laura Ruud, Geological Society of Nevada Office Manager, for helping Jack Hursh with the calendar contest.

Photo contest details for 2015 calendar – deadline March 31, 2014

Calling all photographers! NBMG is already accepting photographs for the 2015 Nevada Geology Calendar.  If you have photographs of interesting geologic features or landscapes from your fieldwork that you would like to submit for next year’s calendar, please email Jack Hursh at NBMG (jhursh@unr.edu).

Here are the details for this contest for the 2015 calendar:

  • Deadline for entries is March 31, 2014.
  • 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.
  • E-mail submissions to Jack Hursh (jhursh@unr.edu).
  • NBMG Cartographers will make the final decision on the winning photos.
  • Prizes will be awarded for first-, second-, and third-place winners.
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Four new publications now available at NBMG: two hazards-related reports and two geologic maps

Open-File Report 13-3 – Flood Hazards

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Updated assessment and vulnerability to flood hazards in Nevada, by Irene M. Seelye, Gary L. Johnson, Jonathan G. Price, and Jordan Hastings, 2013

OF13-3, 8 pages, color, with 119 external links

Supersedes Open-File Reports 07-2 and 10-3

Available only on the Web: http://www.nbmg.unr.edu/dox/of133/of13-3.pdf

Open-File Report 13-7 – Earthquakes

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Magnitude values used for M≥6 earthquakes in Earthquakes in Nevada: 1840s to 2010, NBMG Map 179, by Craig dePolo, 2013

This report details the basis for the magnitude values used for magnitude 6 and larger earthquakes in the recent earthquake map of Nevada, Map 179. A table comparing several estimates of the magnitudes of these events is included.

OF13-7, 6 pages, b/w, folded or rolled, $1.80

Available on the Web: http://www.nbmg.unr.edu/sales/pbsdtls.php?sku=OF13-%207

See also Map 179: http://www.nbmg.unr.edu/sales/pbsdtls.php?sku=M179

Open-File Report 13-8 – Wabuska

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Preliminary geologic map of the Wabuska quadrangle, Lyon County, Nevada, by Nicholas H. Hinz, Alan R. Ramelli, and James E. Faulds, 2013

A 1:24,000-scale, color preliminary geologic map of the Wabuska 7.5-minute quadrangle in Lyon County, Nevada. The bedrock exposures in this quadrangle consist of Mesozoic and Tertiary volcanic and sedimentary rocks. The Mesozoic section includes locally fossiliferous Late Triassic Limestone that conformably overlies Late to Early Triassic volcanic and volcaniclastic strata. The Tertiary section includes late Oligocene ash-flow tuffs and a complex middle to late Miocene section of lavas, intrusions, and sedimentary rocks. The Tertiary section is cut by a system primarily down-to-the-east northeast-striking normal faults and is locally folded along north-northeast-trending synextensional synclines and anticlines. Principal surficial deposits include late Pliocene to modern alluvial fan deposits, late Quaternary lacustrine deposits of pluvial Lake Lahontan, and late Quaternary eolian deposits. The Wabuska fault zone cuts across the quadrangle along the southern edge of the Desert Mountains and consists of a system of right-stepping, ENE-striking, strike-slip and oblique-slip faults. Quaternary fault scarps were mapped along segments of the Wabuska fault zone and along several northeast-striking fault zones in the northwest quarter of the quadrangle. This quadrangle also includes the Wabuska power plant–Nevada’s first geothermal power plant, and the natural gas-powered, Fort Churchill General Station.

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 Department of Energy.

OF13-8, one color plate, 40×27 inches, scale 1:24,000; includes cross sections, $15.00

Available on the Web: http://www.nbmg.unr.edu/sales/pbsdtls.php?sku=OF13-%208

Open-File Report 13-9 – West Gate

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Preliminary geologic map of the West Gate quadrangle, Churchill County, Nevada, by Christopher D. Henry, John W. Bell, David A. John, and Joseph P. Colgan, 2013

A 1:24,000-scale, color preliminary geologic map of the West Gate 7.5-minute quadrangle in Churchill County, Nevada with descriptions of 49 geologic units. Accompanying text includes full unit descriptions and references. Rocks exposed in the quadrangle include highly deformed and variably metamorphosed Triassic and Jurassic sedimentary rocks, thick sections of 29 to 25 Ma ash-flow tuffs that accumulated in one or more large calderas, and middle Miocene sedimentary rocks that record the beginning of regional extension. The map also shows the complex faults and other structures that resulted from middle Miocene to present extension, including long stretches of fault scarps generated by the 1954 Fairview Peak and Dixie Valley earthquakes.

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.

OF13-9, one color plate, 40.5×28 inches, scale 1:24,000; 7-page text, b/w, $18.00

Available on the Web: http://www.nbmg.unr.edu/sales/pbsdtls.php?sku=OF13-%209

Visiting Professor at NBMG – Dr. Rongxin Fang

A message from Geoff Blewitt (11-6-13): “Please join me in welcoming visiting professor, Dr. Rongxin Fang, who just arrived this afternoon from China, and will be working with us for 12 months, funded by a scholarship from the Chinese government.

Rongxin is a Lecturer at Wuhan University, China.  His main research interest is on using high rate GPS data (as high as 50 Hz!) for seismology, using software that has been developed at Wuhan University.”

Dr. Geoffrey Blewitt, Professor
Nevada Geodetic Laboratory
Nevada Bureau of Mines & Geology
University of Nevada, Reno, NV 89557-0178, USA

NPGS Guidebook—Available Now

Title: Geothermal and Petroleum Developments in Several Extensional Basins of the Central Walker Lane, Nevada: Nevada Petroleum and Geothermal Society 2013 Field Trip Guidebook, Larry J. Garside, editor, 136 p.

If you did not get the chance to attend the Nevada Petroleum and Geothermal Society (NPGS) field trip on October 12-13, you can now order a copy of the guidebook in the following formats: $30 for paper, $30 for softgood download, and $45 for CD-ROM. If you would like to order a guidebook right away, please call the NBMG Publication Sales Office at 775-682-8766. The guidebook will be added to the shopping cart soon.

There are only a limited number of printed guidebooks (paper) available, and after those are gone, we will only have the two digital formats available for sale. If you pick up a paper copy of the guidebook at GBSSRL, you can view a mason jar full of oil that Chris Henry brought to us from a Gabbs Valley well on the field trip.

Papers and stops include the following: oil exploration in Gabbs Valley and vicinity; oil shows in Gabbs Valley exploration wells; Cobble Cuesta anticline—possible modes of formation; bitumen-stained sandstone and conglomerate; geology of the Wild Rose geothermal field; new interpretation of volcanic rocks on Fissure Ridge (Gabbs Valley); geothermal systems of Rhodes, Columbus, and Teels marshes; gas and oil shows in historic oil wells in valleys near Gabbs Valley (including Columbus Salt Marsh); and stratigraphy and source-rock potential of Tertiary sedimentary rocks, particularly paper shales and coal beds.

Ten new papers on petroleum and geothermal developments in the central Walker Lane and a shortened version of USGS Open-File Report 99-352 on the geology of the Cobble Cuesta area are included in the guidebook:

Exploration of the Wild Rose Geothermal Project, Mineral County, Nevada, by Ben Delwiche

ASARCO Incorporated’s Car Project, 1990-94, Western Gabbs Valley, Mineral County, Nevada-Precious Metal Exploration Transitioned to Geothermal Exploration, by Peter G. Vikre and Fleetwood R. Koutz

Fissure Vent and Proposed Caldera in Gabbs Valley, Nevada, by Christopher D. Henry and David A. John

Stratigraphy, Tephrochronology, and Structural Setting of Miocene Sedimentary Rocks in the Cobble Cuesta Area, West-Central Nevada [abbreviated version of USGS OF 99-352], by John H. Stewart, Andrei Sarna-Wojcicki, Charles E. Meyer, and Elmira Wan

Observations of Post-Miocene Compression in Central Nevada, by Vincent Ramirez

Latest Tertiary Faulting and Folding within Gabbs Valley, Nevada, by Jonathan Payne

Structure, Stratigraphy, and Hydrocarbon Potential of Gabbs Valley, Nye County, Nevada, by Alfred H. Pekarek

Summary of Oil-and-Gas Well Drilling in Gabbs Valley, 2001-2011, Northwestern Nye County, Nevada, by Jerome P. Walker

Active Geothermal Systems of the Mina Deflection, Southwestern Nevada, by Mark Coolbaugh, Chris Kratt, James Faulds, Richard Zehner, and Chris Sladek

Oil and Gas Occurrence in Columbus Salt Marsh, Esmeralda County, Nevada, by J.H. Henderson, Andrew Cullen, and Conrad Hinshaw, Jr.

The Columbus Salt Marsh Sub-Basin Oil Seep and Coaldale Well, by Andrew Cullen and James Henderson

BLM Job Announcement—Ends Nov 12

Message from BLM: “We are pleased to announce a new, exciting position 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:  Supervisory General Supply Specialist; Announcement Number:  MT-DEU-2014-0002;
Location(s) of position:  Billings, MT, US;
Salary:  $47,448 – $61,678;
Applications will be accepted until:  11/12/2013.

For additional information on this job posting, please go to:  https://jobs.mgsapps.monster.com/blm/vacancy/viewVacancyDetail!execute.hms?orgId=3&jnum=108803

Remembering John Erwin

We are sad to pass on the news of the death of John Erwin on Thursday October 3, 2013.

John worked as a geophysicist for the Nevada Bureau of Mines and Geology for many years. Some of the publications that he wrote while at the Bureau are listed below.

A Celebration of Life service was held October 25, 2013 in Reno, Nevada, followed by a Military Internment Service at Mountain View Cemetery.

You can read more about John’s life in the obituary at http://www.nbmg.unr.edu/_docs/John_Erwin_obituary.pdf.

NBMG publications by John W. Erwin (19671988)

  • Map 31: Gravity map of Battle Mountain and adjacent areas, Lander, Pershing, and Humboldt counties, Nevada, by John W. Erwin, 1967.
  • Map 36: Gravity map of the Tonopah, Baxter Spring, Lone Mountain, and San Antonio Ranch quadrangles, Nevada, by John W. Erwin, 1968.
  • Map 39: Gravity map of the Yerington, Como, Wabuska, and Wellington quadrangles, Nevada, by John W. Erwin, 1970.
  • Map 47: Bouguer gravity map of Nevada, Winnemucca sheet, by John W. Erwin, 1974.
  • Map 49: Gravity map index of Nevada, by John W. Erwin, 1974.
  • Map 53: Bouguer gravity map of Nevada, Millett sheet, by John W. Erwin and Edward W. Bittleston,1977.
  • Map 58: Bouguer gravity map of Nevada, Reno sheet, by John W. Erwin and John C. Berg, 1977.
  • Map 62: Aeromagnetic map index of Nevada, by John W. Erwin, Susan L. Nichols, Richard H. Godson, and Patricia L. Hill, 1980.
  • Map 65: Bouguer gravity map of Nevada, Wells sheet, by John W. Erwin, 1980.
  • Map 86: Bouguer gravity map of Nevada, McDermitt sheet, by J. W. Erwin, D.A. Ponce, and Alexander Wagini, 1985.
  • Open-File Report 82-1: Principal facts for a set of regional gravity data for the Wells l- by 2-degree sheet, Nevada, by John W. Erwin, 1982.
  • Open-File Report 82-2: Principal facts for a set of regional gravity data for the Reno 1- by 2-degree sheet, Nevada, by John W. Erwin, 1982.
  • Open-File Report 82-3: Principal facts for a set of regional gravity data for the Millett 1- by 2-degree sheet, Nevada, by John W. Erwin, 1982.
  • Open-File Report 82-7: Discussion of a set of regional gravity data for the Reno 1- by 2-degree sheet, Nevada, by John W. Erwin, 1982.
  • Open-File Report 82-8: Discussion of a set of regional gravity data for the Millett 1- by 2-degree sheet, Nevada, by John W. Erwin, 1982.
  • Open-File Report 88-2: Discussion of the McDermitt gravity sheet, Map #86, by John W. Erwin, 1988.
  • Report 23: Induced polarization (resistivity) and magnetic surveys of altered Tertiary volcanic rocks near Reno, Nevada, by John W. Erwin, 1975.
  • Report 35: Seismic refraction studies Tonopah area, by John W. Erwin, 1980.