AAPG/SEPM Annual Meeting

Latest Tweets View Twitter Feed new JSR paper: Using Image-Based Size Analysis For Determining the Size Distribution and Flux of Eolian Particles http://t.co/buSDemqddG 4/15/2014 8:09:02 PM new JSR paper: Aragoniteu2013Calcite Speleothems: Identifying Original and Diagenetic Features http://t.co/o7WFT7vLXh 4/15/2014 8:08:22 PM additional information about organizing an SEPM conference here: http://t.co/wlNG9FY7TM 4/10/2014 11:42:10 AM

Upcoming SEPM Field Trips

Contact Theresa Scott with any questions regarding Field Trips.

All course registration needs to occur through AAPG .

Pre-Convention Field Trip 8

Society for Sedimentary Geology (SEPM)/SEPM Pacific Section (PSSEPM)
The Great Debate: Sequence Stratigraphic and Tectonic Evolution of Deltaic Facies in the Ridge Basin, California
Dates: Sunday, 22 April, 7:00 a.m.–6:00 p.m.
Leaders: Dave Larue and Jon Allen (Chevron, Bakersfield, California)
Fees: Professionals $125; Students $50 (limited)
Includes: Ground transportation, lunch, refreshments, guidebook
Limit: 40 people
This field trip is an overview and critical examination of the depositional controls on the stratal architecture within the famous Ridge Basin. The Neogene Ridge Basin of southern California contains some of the most spectacular and intriguing outcrops of fluvial, lacustrine and shallow water deposits, arguably, in North America.
The basin has been the focus of numerous studies by several world-class geologists. Given this level of exposure and analysis, it is notable that there are significantly different interpretations about the stratigraphic and tectonic evolution of the basin.
These differing interpretations will be discussed on the field trip as participants explore reservoir scale outcrop exposures. The field trip will focus on the debate surrounding the origin of the different scales of strata architecture and packaging, review and provide examples of shallow marine sequence stratigraphic architecture, with discussion of deltaic, fan-delta and lacustrine depositional systems. This trip may be of interest to guests.

Post-Convention Field Trip 14

Society for Sedimentary Geology (SEPM)/SEPM Pacific Section (PSSEPM)

Terrestrial Microbial Limestones in the Miocene Horse Spring Formation, Lake Mead Area, Southern Nevada

Dates: Wednesday, 25 April, 7:00 p.m.–Saturday, 28 April, 4:00 p.m. (Field trip starts at 7:00 p.m. at Fiesta Hotel & Casino in Henderson, NV and ends at Las Vegas Airport at 4:00 p.m.)
Leaders: Thomas Hickson (University of St. Thomas, St. Paul, Minnesota), and Paul Umhoefer and Zachary Anderson (Northern Arizona University, Flagstaff, Arizona)
Fee: Professionals $500; Students $250 (limited)
Includes: Ground transportation, three nights’ lodging based on double occupancy, lunch on 26, 27 and 28 April, dinner on 26 and 27 April, refreshments, guidebook
Note: Travel to/from Nevada is not included. (October 2011 estimated airfare Long Beach to Las Vegas $175).
Limit: 25 people

Microbial limestones comprise important and sometimes volumetrically significant portions of terrestrial lacustrine sedimentary sections. These units represent a critical facies in important hydrocarbon settings, yet thick, laterally continuous, and well-exposed outcrop analogs are somewhat uncommon. Miocene-age microbial limestones in the Horse Spring Formation of the Basin and Range near Lake Mead east of Las Vegas, Nevada, satisfy all of these conditions and provide a unique opportunity to discern both the detailed sedimentology and facies architecture of ancient, microbial-dominated lake systems. The goal of this field trip is to examine microbial limestones and their associated lithofacies in moderate- to small-sized lakes in an extensional – transtensional setting.

We will highlight these aspects of the limestones:

  • Tectonic setting
  • Lithofacies in detailed transects through key members of the formation
  • Litho- and chemofacies variations both laterally and vertically including changes approaching well exposed lake-basin margins
  • Data on changes in the limestones through time
  • Our interpretations of the relation of the limestones to changes in climate and tectonics