Register Now for the PS SEPM Fall Field Trip

Devonian Carbonate Platform of Eastern Nevada: Facies, Surfaces, Cycles, Sequences, Reefs, and the Cataclysmic Alamo Impact Breccia.

Pacific Section SEPM Fall Field Trip, October 4-­‐6 2013

Field Trip Leaders: John E. Warme (Professor Emeritus, Colorado School of Mines) and Mara E. Brady (Assistant Professor, Fresno State, mebrady@csufresno.edu)

REGISTRATION & LODGING RESERVATION DEADLINE: SEPTEMBER 20

FIELD TRIP LIMIT: 50
Participants PLEASE NOTE that student registration is limited to 8 students per college/university

Mail in the Registration Form Below

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REGISTRATION FORM

Fall 2013 Field Trip Announcement!

FIELD TRIP OVERVIEW

PS-SEPM Fall Field Trip: October 4-6, 2013

DEVONIAN CARBONATE PLATFORM OF EASTERN NEVADA: FACIES, SURFACES, CYCLES, SEQUENCES, REEFS, AND THE CATACLYSMIC ALAMO IMPACT BRECCIA.

Trip Leaders: John E. Warme (Evergreen, Colorado) and Mara E. Brady (Fresno State, mebrady@csufresno.edu)

Stratigraphic column

Stratigraphic column showing ~250 m of carbonate platform mostly cyclic limestones and dolostones from the upper part of the newly named Fox Mountain Formation, the informal yellow slope-forming member and shallow carbonate platform facies of the lower Guilmette Formation, the newly named Alamo Breccia Member of the middle Guilmette, and the lower beds of post-Breccia limestones and sandstones of the informal upper Guilmette (from Jared R. Morrow, after Sandberg, Morrow and Warme, 1997).

Devonian limestone and dolostone formations are superbly exposed in numerous mountain ranges of southeastern Nevada. The Devonian is as thick as 1500 m there and reveals continuous exposures of a classic, long-lived, shallow-water carbonate platform. Our two-day field excursion will be to Devonian outcrops easily reached from the settlement of Alamo, Nevada, ~100 mi (~160 km) north of Las Vegas. Emphasis will be on carbonate-platform lithostratigraphy, but includes overviews of the conodont biochronology that is crucial for regional and global correlations. These formations are mainly composed of hundreds of partial to complete shallowing-upward Milankovitch-scale cycles and are grouped into sequences bounded by regionally significant surfaces. Dolomitization in the Lower Devonian Sevy Dolostone and Middle Devonian Simonson Dolostone appears to be linked to exposure surfaces and related underlying karst intervals. The less-altered Upper Devonian Guilmette Formation exhibits characteristic shallowing-upward limestone-to-dolostone cycles that contain typical carbonate-platform fossil- and ichnofossil-assemblages, displays stacked biostromes and bioherms of flourishing stromatoporoid sponges and sparse corals, and is punctuated by channeled quartzose sandstones. The Guilmette Formation also contains a completely exposed ~50-m-thick buildup that is constructed mainly of stromatoporoids, with an exposed and karstified crest. This buildup exemplifies such Devonian structures known from surface and hydrocarbon-bearing subsurface locations worldwide.

Of special interest is the stratigraphically anomalous Alamo Breccia that represents the Middle Member of the Guilmette. This spectacular cataclysmic megabreccia, produced by a bolide strike ~382 million years ago, is as thick as 100 m where we will study it. The Breccia may be the best exposed proven impact debris field on Earth. It contains widespread intervals created by the seismic shock, ejecta curtain, tsunami surge, runoff and probable continental margin collapse generated by a major marine impact.

Travel & Logistics: Participants should plan to arrive Friday night for a Saturday 8am start of the two-day field excursion. Registration (details to be posted shortly) will include a complete printed field guide.

On Saturday, the group will visit Hancock Summit, where participants can observe and discuss (1) carbonate facies, cycles, and surfaces and (2) the Alamo Breccia and its bolide impact signatures.

On Sunday, we will visit Silver Canyon, where participants will investigate (1) the upper interval of the Alamo Breccia, which contains large clasts of platform carbonates and clasts of impact lapillistone; and (2) exceptional exposure of a carbonate buildup (Reso’s Reef), lithologies that interfinger with the buildup, and the karstified crest at the top of the buildup.

The Passing of Dr. Gene Fritsche

Dr. Gene FritscheDr. A. Eugene Fritsche passed away on July 7, 2013. Gene joined the CSU Northridge’s Department of Geological Sciences in Fall 1964, after receiving his Ph.D. from UCLA. He twice served as Department Chair, retired in Spring 2000 and was immediately granted emeritus status. Gene was a long time supporter and past President of the Pacific Section SEPM and held the title as Senior Advisor for Life.  Gene was an native of Los Angeles and grew up with love of the hills and complex geology that surrounded him. Although he traveled to every continent on Earth, always fascinated with the rocks and geology that he saw, the geology of southern California remained his lifelong passion. Gene was a caring teacher who made his students strive for the best, a strong mentor and role model for his research students, a leader in shaping the path of the department for decades, and a legend in the world of southern California geology. Equally important in his life were his family and the incredible adventures they shared for more than 50 years. His service to his fellow men and woman through Habitat for Humanity and other aid agencies improved the lives of many, and his kindness and humor touched their lives forever leaving happy memories. His loving and intrepid wife, Sue, said that Gene so enjoyed teaching geology at CSUN; and even though his life was a little shorter then we would have liked, he had a very happy and adventurous life with all his world travels and his many, many service projects. You can send memories of Gene to geology@csun.edu, and we will pass them on to Sue.

More pictures of Gene http://www.csun.edu/geology/AEF passing.htm

Source: http://www.csun.edu/geology/

Date Extendend!

The deadline for submitting abstracts to the 2013 Joint PSAAPG / SPE / PSSEPM Conference has been extended!

Submit your Abstract by
February 15th!

The best student poster presentation will receive the John Cooper Award

2012 ANNUAL JOINT CONVENTION – CALL FOR PAPERS

Call For PapersCALL FOR PAPERS! Joint PSAAPG / SPE / PSSEPM Conference – Monterey April 19th – 25th, 2013 at the Portola Hotel & Spa (www.portalahotel.com) Energy & the Environment – Working Together for the Future Sessions

  1. Reviving Old Giants and Recognizing New Potential Mature Basins
  2. Opening Up the West: New and Overlooked Opportunities in Unconventional Reservoirs
  3. Sedimentary and Biogeochemistry of the Monterey Formation & Upwelling Sediments: a Session Dedicated to Bob Garrison
  4. Contributions to the Geology of the Sacramento Valley
  5. Arctic Energy Opportunities: from the Cook Inlet to the North Slope and Beyond
  6. Geothermal Development in a Changing Energy Landscape
  7. Energy and the Environment
  8. Outcrop, Subsurface and Modern Seafloor Studies of California’s Turbidite Systems
  9. The Stratigraphic Architecture of Deep-Water Depositional Models
  10. Fluvial and Shallow-Marine Depositional Systems: Insights from Outcrops and Subsurface Prediction
  11. Western North America Earthquake Hazards: What’s Shakin’?
  12. Faults, Folds, Transforms and Terranes of Western North America
  13. Sediment Routing in Western North America
  14. Tectonics and Sedimentation on the Pacific Margin of North America: New Developments and Interpretations
  15. Analysis and Modeling of the Dynamics of Coupled Seascapes and Landscapes
  16. Undergraduate Research Poster Session

Submit Your Abstract NOW! Submit your abstract to: psaapgabs@gmail.com and list what session you prefer and oral or poster. Deadline for submission is 1/15/13