Join us for the GeoPRISMS Townhall Meeting and Community / Student Forum at the 2016 AGU Fall Meeting!
When: TOMORROW Monday December 12 at 6:00 PM
Where: The Park Central Hotel (formerly Westin Market Street) 50 Third Street – Franciscan Ballroom
The event is open to all with interests in the GeoPRISMS Program and GeoPRISMS (or MARGINS) research. Come hear updates about the GeoPRISMS Program, the latest GeoPRISMS research projects & study areas, and ongoing GeoPRISMS research from student presenters.
* A short formal session (starting at 6:30PM) will include a welcome and opening remarks from the GeoPRISMS Chair Demian Saffer and updates from NSF Program Directors Jenn Wade and Maurice Tivey.
* Shuoshuo Han (UT Austin) will provide a summary of her ongoing research on Sediment consolidation at the Cascadia margin deformation front and its impact on shallow megathrust slip behavior.
* James Gaherty (LDEO, Columbia University) will present a report on field research conduted on rifting processes from unique onshore/offshore geophysical and geochemical datasets in the Northern Malawi (Nyasa) Rift
* Tobias Fischer (University of New Mexico) will provide a summary of the Theoretical and Experimental Institute for the Rift Initiation and Evolution Initiative that will be held in February 2017.
Student entrants for the GeoPRISMS Prize for Outstanding Student Presentations are also invited to display their AGU posters (or poster versions of their AGU talks) and discuss their research with event participants. This will be a great opportunity for students to share their results further and to interact with a wide spectrum of GeoPRISMS scientists.
There will be ample time to mingle and refreshments will be available. Among those present will be Demian Saffer (GeoPRISMS Chair), members of the GeoPRISMS Steering and Oversight Committee, and Program Directors for GeoPRISMS from the National Science Foundation.
We hope to see you there!
The GeoPRISMS Office
Please see below for several workshops of interest to the GeoPRISMS Community taking place this spring.
A list of workshops and meetings organized by partner organizations with GeoPRISMS is available on the GeoPRISMS website. Please contact the GeoPRISMS Office at email@example.com if you wish to advertise your workshop on the GeoPRISMS Listserv.
See below for more details.
Offshore Geophysical Monitoring of Cascadia for Early Warning and Hazards Research
University of Washington, Seattle | April 3-5, 2017
Deadline for application: January 16, 2017
Please join us for a workshop to explore the design, cost, and benefits of a real-time offshore geophysical network extending along the trench of the Cascadia subduction zone. The University of Washington is hosting a meeting for interested scientists and engineers to discuss the scientific and societal motivation for such a system, the geophysical requirements, and the merits of alternative engineering approaches including submarine cables and emerging technologies. Such a system would provide continuous monitoring of the megathrust, enhanced earthquake and tsunami early warning capability, and sustained observations for scientific study. The workshop will also explore strategies for engaging stakeholders and enabling implementation.
Additional information and meeting logistics can be found online (http://cascadia.washington.
Workshop Organizers: David Schmidt and William Wilcock, University of Washington
Workshop Funding: Gordon and Betty Moore Foundation
Workshop on Scientific Exploration of Induced SeisMicity and Stress (SEISMS)
Lamont-Doherty Earth Observatory, Palisades, NY | March 29-31, 2017
Deadline for travel support application: January 6, 2017
Earthquakes, both natural and induced, remain unpredictable because we lack understanding of the conditions necessary to cause them. In part, this is because direct observation of the basic processes that link parameters such as stress, pore pressure, and slip on a fault has proven impossible, particularly over the pre- to coseismic timescales. These parameters could be measured in situ by borehole and surface-based instruments during an earthquake if they were deployed near to the rupture source. Because it is difficult to predict when and where an earthquake will occur, in order to instrument a fault in advance of an earthquake, one possibility is to induce fault slip (an earthquake) and associated seismicity through fluid injection at an instrumented site suitable for scientific study. A project of this nature would aim to: 1. build an observatory for near-source observations of earthquake processes; 2. establish the physical and chemical effects of fluid injection into the subsurface on fault strength and earthquake source characteristics; 3. investigate the impact of deformation caused by earthquakes on the subsurface physical environment. We invite participants to attend a workshop, funded jointly by International Continental Scientific Drilling Program, ICDP and the Southern California Earthquake Center (SCEC), to discuss the scientific merit and practical applications of a field-based investigation into the causes of induced seismicity. The workshop will focus on the types of earthquake science questions that could be addressed with fault zone boreholes in and around active faults, and will evaluate different strategies for making direct observations of earthquake rupture in the subsurface. We hope to bring together academic researchers, as well as industry and government employees, to leverage the data and observations from the recent surge in induced earthquakes in the continental USA and build a consensus on how to fill the critical knowledge gaps our understanding of how to mitigate the hazard of unwanted anthropogenic earthquakes. The workshop will be held at Lamont-Doherty Earth Observatory from March 29-31, 2017. Limited partial and full travel funding is available thanks to the support of ICDP and SCEC. To apply to the workshop, please send a 2 page CV and a single page statement of interest to firstname.lastname@example.org. The statement should include your interest in the project and a summary of your expertise. The deadline for travel support application is January 6, 2017. Early career scientists are strongly encouraged to apply to help shape what will be a long-term project.
The workshop description and application instructions are available below and at:
You still have time to apply to the 2017 Theoretical & Experimental Institute for the RIE Initiative. DEADLINE EXTENDED THROUGH NOVEMBER 21!
The Theoretical and Experimental Institute (TEI) for the Rift Initiation and Evolution (RIE) initiative is now open for applications. The TEI will be held over three full days from February 8-10, 2017 and is intended to summarize progress and recent scientific advances related to the RIE initiative, and to identify high-priority science for future GeoPRISMS RIE efforts. (Please see the Science and Implementation plan available at http://geoprisms.org/research/
The TEI is funded by the National Science Foundation through the GeoPRISMS Office at The Pennsylvania State University. There is no registration fee. We will be able to cover most on-site expenses (venue costs, hotel expenses based on double occupancy, and breakfast & lunch) for approximately 80 participants. Most participants will have to cover their travel to and from the meeting; partial funding for travel is available for students and postdocs. We will not be able to provide dinners on-site, but there are several restaurants nearby. Confirmed participants whose on-site expenses are covered are expected to arrive on Tuesday evening and leave on Saturday morning.
Tobias Fischer (University of New Mexico), Donna Shillington (LDEO/Columbia University), Estella Atekwana (Oklahoma State University), Rebecca Bendick (University of Montana), Juliet Biggs (University of Bristol), Esteban Gazel (Virginia Tech), Liz Hajek (Pennsylvania State University), Luc Lavier (University of Texas, Austin). Ex officio: Demian Saffer (GeoPRISMS Office/Pennsylvania State University).
The Hotel Albuquerque in Albuquerque, NM (http://www.hotelabq.com). The hotel is located 8 miles from Albuquerque airport. Cab service is available.
Student and Postdoc symposium
On Tuesday before the TEI we will hold a student and postdoc symposium which will feature short presentations by attendees and discussion with the conveners and NSF program managers. The symposium runs from 1:00 – 5:00 and will be followed at 5:00 – 7:00 by student posters and cash bar. We encourage all students and postdocs to attend and to arrange their travel accordingly, after confirmation of attendance.
A draft of the agenda is now available online at: http://geoprisms.org/tei-
Saturday: Field trip to Kasha-Katuwe Tent Rocks National Monument
We will organize an optional field trip to the nearby (~1 hour drive from Albuquerque) Kasha-Katuwe National Monument in the Jemez Volcanic field to look at pyroclastic volcanic deposits and get an overview of the Rio Grande Rift. This trip will involve some light hiking. There will be no additional cost for participating in the trip. In the event of too much snow cover in the Jemez Mountains, we will organize a trip to the Zuni-Bandera volcanic field (~ 1.5 hours from Albuquerque). We will return to Albuquerque by 5 pm.
Dear graduate students,
You are invited to participate in the upcoming fourth annual Seismology Student Workshop to be held March 17th-18th at the Lamont-Doherty Earth Observatory in Palisades, New York. This workshop is completely student-run and organized with the aim of bringing together graduate students who conduct research in seismology and earthquake-related fields. We intend to build on the success of our previous workshops in providing a friendly environment that fosters in-depth scientific discussion.
[This workshop is only open to graduate students, so we encourage advisors to notify their students about this opportunity!]
- Topics related to the scope of this workshop include but are not limited to:
- Seismic imaging of tectonic processes
- Tomographic/inverse techniques
- Earthquake source processes
- Seismic anisotropy
- Seismicity and tremor
The format will be a series of 25-minute talks and poster sessions that take place over the course of the two days. There is a $20 registration fee that will be collected from all participants at the beginning of the workshop. Meals and refreshments will be provided for all attendees, as well as hotel lodging for the nights of Wednesday, March 16th and Thursday, March 17th. Registration is limited to 55 participants, with preference given to those who submit abstracts.
The Facebook page for the workshop can be found here:
If you are interested in attending, please complete and submit the online application form:
A title, abstract, and an optional figure must be submitted to be considered for an oral or poster session.
The application deadline is February 12, 2016. We will inform attendees about their application status by the end of February. Please feel free to forward this to other students you know that might be interested.
We hope to see you in March!
Celia, Helen, Kira, Zach, and Genevieve
Please direct any enquiries to email@example.com
Applications are now being accepted for participation in an NSF-sponsored workshop on Future Directions in Tectonics, to be held in Madison, WI on May 20-22, 2016 (see attached announcement).This workshop had been postponed from July 2015 to allow greater community participation and will result in creation of a white paper, designed to help guide research and funding in tectonics over the next decade.
Applications for participating in the workshop and travel support should be submitted by February 19th athttp://goo.gl/forms/ozAhTec0My. Notification of application status will be made by March 18th.
Feedback for the organizing committee on the content and format of the workshop may be submitted at:http://goo.gl/forms/OpLAuWPuw9.
Community-written, pre-meeting “idea papers” may also be submitted by April 8th. Short papers (1 page for single author, 2 pages for group) that outline the perceived top research priorities, grand challenges, and opportunities for the coming decades in tectonics should be sent directly to firstname.lastname@example.org.
The final workshop agenda will be announced by May 6th.
We look forward to working with you to craft a vision for the future direction of tectonic research.
Organizers: Rick Allmendinger, Marin Clark, Eric Cowgill, Becky Dorsey, Kevin Mahan, James Spotila
Top. Attendance per meeting and cumulative attendance for MARGINS and GeoPRISMS meetings. 2000: SEIZE=SEIZE TEI (Snowbird, UT; January), Subfac=Subfac TEI (Eugene OR, January), RCL=Gulf of California workshop (Puerto Vallarta, Mexico, October). 2001: CR=Central America SEIZE/Subfac workshop (Heredia, Costa Rica, July), RCL=Red Sea workshop (Sharm-el-Sheik, Egypt, March). 2002: IBM=Izu-Bonin-Marianas workshop (Honolulu, HI, September), UM=Subfac modeling workshop (Ann Arbor, MI, October). 2003: Wai=Waipaoa focus area workshop (Gisborne, New Zealand, May), SEIZE=Seismogenic zone revisited TEI (Snowbird, UT, March). 2004: InterMARGINS workshop on modeling the extensional deformation of the lithosphere (Pontresina, Swiss Alps, July). 2006: GoC=Lithospheric rupture in Golf of California workshop (Ensenada, Mexico, January), Imag=workshop in interpreting upper mantle images (Woods Hole, MA, May), S2S=Source and sediment dispersal workshop (Eel River system, California, September). 2007: CR=Subfac/SEIZE integration workshop (Heredia, Costa Rica, June), CAS=integrated collaborations in Cascadia and Walker Lane/Salton Trough (Monterey, CA, March), CL=education mini-workshop (Arlington, VA, April), KIEL=Global data network meeting (Kiel, Germany, May), HAW=Subfac at Izu-Bonin-Marianas (Honolulu, HI, November). 2008: next decade of SEIZE workshop (Mt Hood, OR, September). 2009: S2S Synthesis meeting (Gisbourne, New Zealand, April), RCL=RCL Synthesis workshop (Charleston, SC, April), ML=Mini-lessons workshop (Palisades, NY, May), Volat=Subfac TEI on volatiles (Mt Hood, OR, September). 2010: MSPW=MARGINS Successor Planning Workshop (San Antonio, TX, February), RIE=RIE Implementation workshop (Santa Fe, NM, November). 2011: SCD=SCD Implementation workshop (Bastrop, TX, January), AK=Alaska/Aleutians site planning workshop (Portland, OR, September), ENAM=EarthScope/GeoPRISMS workshop for ENAM site (Bethlehem, PA, October). 2012: CAS=GeoPRISMS/EarthScope site planning workshop for Cascadia (Portland, OR, April), EARS=planning workshop for East African Rift System (Morristown, NJ, October). 2013: NZ=Planning workshop for New Zealand primary site (Wellington, New Zealand, April).
Bottom. Attendance at GeoPRISMS Mini-workshops at the Fall AGU. 2011: ENAM=East North American Margin; CRISP=Costa Rica Seismogenic Project; ExTerra=Exhumed Terranes; GeoInf=GeoInformatics. 2012: Cascadia=Marine Geophysics at Cascadia; IODP=IODP opportunities in SCD; Early Career=GeoPRISMS/EarthScope luncheon. 2013: KATH=Kermadec Arc Havre Trough; Aleutians=logistics preparation workshops; CSDMS=opportunities with the Community Surface Dynamics Modeling System; EARS=planning and logistics.
The Theoretical and Experimental Institute (TEI) for the Subduction Cycles and Deformation (SCD) initiative is now open for applications. The TEI is held on the three full days of October 12-14 and is intended to provide a summary of progress made in the science objectives of the SCD initiative (as discussed in the Science and Implementation plan available through geoprisms.org). Applicants do not have to have worked on projects funded by GeoPRISMS. We expect a broad and diverse audience drawn from domestic and international researchers, including graduate students and early career scientists, who are interested in the structure and dynamics of subduction zones.
Sessions with confirmed keynote and invited speakers:
Please see below for sessions of interest to the GeoPRISMS Community, taking place at the 2015 AGU Fall Meeting, December 14-18 in San Francisco. Note, AGU abstract submission deadline is August 5, 2015.
Submit your abstract: http://fallmeeting.agu.org/2015/abstract-submissions/
S001: Advances in understanding slow slip and transitional regions
Session ID#: 8822
For investigators working on slow slip or transitional regions of faults, please consider submitting an abstract to our AGU session:
Slow, aseismic slip provides insight into areas of faults where frictional properties transition from unstable stick-slip behavior to stable sliding. Yet our current understanding of the mechanics of slow slip events cannot explain either their broad diversity, both temporal, ranging from days to years, and spatial, or their implications for earthquake hazards. Additionally, slow slip events often exhibit complex interactions with tectonic tremor or earthquake swarms. Slow slip events also load their surrounding environment, including locked seismic faults, and recent evidence suggests that some large earthquakes were preceded by slow slip signals, indicating possible forecasting applications. This session welcomes studies of slow slip observations, including interactions between aseismic slip, tremor, and earthquakes. We also welcome studies of the mechanical properties or physics of slow slip areas, including modeling and laboratory work. In addition, studies relating slow slip processes to seismic hazards are welcomed.
This session is a co-organized session between Seismology, Geodesy, and Tectonophysics.
Noel M Bartlow (University of California San Diego)
Lucile Bruhat (Stanford University)
Heidi Houston (University of Washington)
V003: A Tangled Web? Generation and transport of fluids, volatiles and melts in subduction zones from source to surface
Session ID#: 9802
We seek to integrate multidisciplinary efforts to advance our understanding of the generation and transport of volatiles and melts in subduction zones to further comprehend the deep volatile cycle and arc magma genesis. New geodynamic models and geophysical imaging techniques continue to improve our understanding of melt and fluid distribution in the mantle. Ground-truth evidence for these models and images is provided through geochemical, petrologic, geochronologic and field studies of lavas erupted on the surface, and the mantle and crust from which magmas are derived and through which they must pass. Thus the tangled web of sub-arc magmatic and volatile cycling is opening to provide a sharper view. This interdisciplinary session invites submissions from geochemistry, petrology, geophysics, modeling, experiments and field geology that address the temporal and spatial evolution of subduction outfluxes, evidence for sub-arc mantle wedge processes and geochemical exchange between Earth’s reservoirs.
Julia Ribeiro (Rice University)
Christy Till (Arizona State University)
Horst Marschall (WHOI)
Leif Karlstrom (University of Oregon)
V012: Geology, Geophysics, Geochemistry and Biology of Serpentinization Processes on Earth and Other Planets
Session ID#: 8394
This session will focus on the most recent discoveries of the complex hydration reactions of ultramafic rocks in which olivine and pyroxene are reacted to form rocks that are dominated by serpentine, brucite, talc, magnetite and carbonates and are associated with H2 and/or CH4 seeps. Serpentinization involves volume expansion, exothermic heat release, and crustal deformation, coupled with changes in fluid chemistry and seismic properties of the host rock. New insights into how serpentinization reactions proceed and importance of serpentinization as an energy source for microorganisms have been developed from studies on ophiolites and hydrothermal systems.
We invite investigations that concern different aspects of serpentinization such as physical, chemical or biological processes, petrology, fluid-rock processes, mechanics, kinetics of the reactions, volatile transfer (CO2, H2O, O2, SO2), or studies on carbon sequestration and abiotic generation of methane on natural, experimental and numerically modeled systems on Earth and planetary environments.
Aida Farough (Virginia Polytechnic Institute and State University)
Robert P Lowell (Virginia Polytechnic Institute and State University)
Jeffrey Alt (University of Michigan)
V014: Heterogeneity in the Earth’s interior: the on-going processes of differentiation
Session ID#: 8060
Earth’s interior is compositionally heterogeneous owing to differentiation processes from early in Earth’s history and through the ongoing recycling of lithosphere by modern plate tectonics. The nature and distribution of these heterogeneities have implications for the convective vigor of Earth’s mantle, its rhealogical structure, processes of magma generation, and the volatile inventory of the whole Earth system. This session aims for a multi-disciplinary exploration of the nature and fate of mantle heterogeneities in a convective regime, role of heterogeneties in the melting process across tectonic settings, residence times for chemical heterogeneities in the mantle, and the evidence for primordial reservoirs in the deep Earth. We encourage contributions from all fields including field observations, analytical geochemistry, experimental geophysics and petrology, and numerical modeling.
Our confirmed invited speakers for the session are:
Kate Kiseeva – University of Oxford
Mingming Li – Arizona State University
Sujoy Mukhopadhyay – University of California, Davis
Jackie Li – University of Michigan
We look forward to your submission.
With warm regards,
Fred A Davis (Smithsonian Institution, Washington DC, United States)
Sujoy Ghosh (Indian Institute of Technology Kharagpur, Kharagpur, India)
Ananya Mallik (Bayerisches Geoinstitut, Bayreuth, Germany)
V016: High-temperature thermochronology: theory, analysis, and application to Earth processes
Session ID#: 7950
Over the past two decades, applications of low-temperature (< 350 ºC) thermochronologic techniques have expanded to include measurement of cooling histories imparted by near surface erosional, burial and tectonic events. Recent studies of more slowly diffusing daughter nuclides within accessory phases have pushed thermochronology to the realm of higher temperatures, with applications focused on measuring cooling rates at deeper crustal levels. Coupled with cooling rates derived from trace element diffusion speedometry, high-temperature thermochronology has the potential to greatly advance understanding of the thermal, and thus geophysical, evolution of the middle and lower crust.
This session will highlight recent advances in assessing thermal histories at greater depths with the Earth’s crust. We encourage abstracts relating to theoretical, analytical, and applied advances in the field of high-temperature thermochronology and geospeedometry.
Terrance Blackburn (UC Santa Cruz)
Andrew Smye (University of Oxford)
Christopher Spencer (Curtin University)
V038: Transport of Volatiles from Mantle to Surface: Insights on Diffusion, Exsolution and Migration of Fluids in Magmatic Environments from Natural Samples and Experiments
Session ID#: 8051
The transfer of volatiles (H2O, CO2, Cl, S, F) between reservoirs within the mantle, subducted oceanic crust and continental crust 1) influences magmatic processes, 2) modifies trace element and isotope signatures and 3) may change redox conditions. The physical and chemical properties of magmas are significantly influenced by diffusion and exsolution of volatiles during their ascent from the upper mantle through the crust to the surface. For instance, magma degassing may initiate volcanic eruptions, modulates magma viscosity (especially along the conduit) and, thus, affects the eruptive style. This session seeks insights from natural and laboratory observations involving volatile transfer and degassing. Cross-disciplinary studies (e.g. petrology with geophysics and/or geochemistry) providing temporal constraints, and/or involving volatile solubility, fluid and melt composition, isotope signatures and redox conditions are especially welcome.
Confirmed Invited speakers:
Iona M. McIntosh – JAMSTEC, Japan
Kristina J. Walowski – University of Oregon, USA
James D. Webster – American Museum of Natural History, NY, USA
Sarah B. Cichy (Arizona State University, Tempe, AZ, USA; email@example.com)
Adrian Fiege (University of Michigan, Ann Arbor, MI, USA; firstname.lastname@example.org)
Thomas Giachetti (Rice University, Houston, TX, USA; email@example.com)
V041: Volatile distribution and cycling in the mantle
Session ID#: 7967
The amount, distribution and speciation of volatiles (including H, B, C, N, S and halogens) in the Earth’s mantle are crucial for constraining melting and metasomatism, electrical, thermal and seismic properties, as well as geodynamics. How these volatiles transfer from the crust and the exosphere to the deep Earth and back, or whether some of them originate from primordial reservoirs, is critical to understanding volatile cycling through time and Earth’s planetary origin. We invite contributions that address these issues via natural samples, experiments or models from the scale of minerals to the whole planet. Projects centered on any tectonic setting and mantle depth (from the lower to the upper mantle) and geological time (Archean to present) are welcomed.
Rita Parai (Carnegie)
Sylvia-Monique Thomas (University of Nevada, Las Vegas)
Nathalie Bolfan-Casanova (Université Blaise Pascal)
Marion Le Voyer
DI010: Multidisciplinary Views of the Lithosphere-Asthenosphere Boundary and Lithospheric Discontinuities
Session ID#: 8001
There has been a rapid expansion in the number of geophysical studies that detect evidence for abrupt changes in the physical properties at the lithosphere-asthenosphere boundary (LAB) and at additional boundaries within the cratonic and oceanic lithosphere. These mid-lithosphere discontinuities (MLD) and LAB associated boundaries are being discovered in many localities across the globe, though the mechanism(s) underlying the drop in seismic wavespeed, changes in electrical conductivity, and relationship of these observed properties to a rheological transition remain enigmatic. A multidisciplinary approach is fundamental for unraveling the role(s) of partial melt, dissolved water, seismic anisotropy, and/or mineral composition at both the LAB and MLDs. This research is yielding new insights into the growth, stability, alteration, and destruction of plates. Our session welcomes contributions from geophysics (seismology. magnetotellurics, gravity, rheology), geology, geochemistry, mineral physics, and geodynamics that investigate the nature of the LAB/MLD.
Andy Cai (University of Maryland)
Chris Havlin (Lamont-Doherty Earth Observatory)
Anna Kelbert (USGS)
Nicholas Schmerr (University of Maryland)
EP021: Mass Extraction and Grain Size Fractionation in Sediment Routing Systems: Tracking Sediment from Upland Catchments to the Deep Ocean
Session ID#: 8927
Sediment routing systems carve and construct land- and sea-scapes through erosion, transport and deposition of sediment. Quantifying controls on mass extraction through selective deposition and grain size sorting within sediment transport systems is of paramount importance for predicting geohazards, natural resources, and land/sea-scape evolution. Interactions between fluid, topography and sediment in transport systems subject to steady or changing boundary conditions result in a complex array of local and down-system variability in grain-size. Inverting the resulting stratigraphic record to isolate the key variables can be tremendously challenging. This session will focus on building links between grain size trends, sediment transport dynamics, landscape evolution and basin-scale forcings over diverse spatiotemporal scales. We solicit contributions that use field-based datasets, experimental/ numerical models, and statistical methods to quantify grain-size patterns at a range of scales (from dunes and bars to whole continental margins), and/or temporal changes in grain-size patterns preserved in the stratigraphic record.
Zane R Jobe (Shell Houston)
Anjali M Fernandes (Tulane University of Louisiana)
Nick C Howes (Shell, Houston)
Elizabeth A Hajek (Penn State University)
T034: New Insights into the Active Deformation and Tectonic Evolution of the Caribbean Plate
Session ID#: 7814
This session seeks to discuss the current state of knowledge of Caribbean plate geodynamics, kinematics and tectonic evolution. Recent studies have quantified how strain is accommodated along the plate boundary, have been able to better constraint geological hazards, and have postulated new models to explain its tectonic evolution. The Caribbean Plate is tectonically active with subduction zones, volcanism, and transpressional zones that produce large seismic and volcanic hazards. The densification of seismic and geodetic instrumentation, capacity building, international collaborations, and collection of new data sets during the past decade are improving our understanding of the Caribbean plate. We seek contributions that use geophysical (seismic, geodetic, remote sensing), numerical and/or analog modeling, and geological techniques to understand strain accommodation along active faults, earthquake, tsunami and volcanic hazards, subduction processes, deformation history, and plate kinematics. This session also encourages contributions on future research directions on tectonics of the Caribbean Plate.
Daniel A. Laó-Dávila (Oklahoma State University)
Alberto M. López (University of Puerto Rico, Mayagüez)
T045: Tectonic, magmatic, and geodynamic studies of extensional processes: Applications in Iceland and the Nubia-Somalia-Arabia plate system
Session ID#: 8278
We invite contributions focused on understanding tectonic, magmatic, and geodynamic processes during rifting at various stages in development with specific emphasis on case studies in Iceland and the Nubia-Somalia-Arabia plate system. Active extension and volcanism along the East African Rift System as well as the adjoining Red Sea and Gulf of Aden spreading centers provide archetypal environments with which to examine both incipient rifts and recently-established seafloor spreading centers. Iceland offers a unique opportunity to directly observe the subaerial mid-Atlantic ridge – a fully-developed spreading center. We welcome petrological, geochemical, and computational investigations of mantle plume dynamics, extension-related volcanism and volatile flux, and magma supply, generation, and ascent. We also welcome geophysical, geodetic, geodynamic modeling, and geological research to better understand lithosphere-asthenosphere behavior, localization of deformation, mantle structure, structural inheritance, strain partitioning between brittle faulting and sub-surface creep, interplay between faulting and magmatism, and time-dependent plate-boundary deformation.
Confirmed Invited Speakers:
Freysteinn Sigmundsson (University of Iceland)
Wendy Nelson (Towson University)
Cynthia Ebinger (University of Rochester)
Oliver Shorttle (University of Cambridge)
Cory Reed (Missouri University of Science & Technology)
D. Sarah Stamps (Virginia Tech)
Tyrone Rooney (Michigan State University)
Ian Bastow (Imperial College)
We look forward to your submissions, and hope to see you in San Francisco!
Cory, Sarah, Tyrone, and Ian
MR018: Pore fluids, faulting, and (a)seismicity
Session ID#: 7583
Recent studies highlight the important role pore fluids play in controlling fault slip and seismicity. Fluids are hypothesized to be first-order controls on: slow slip in subduction zones, dynamic weakening of mature plate boundary faults, and triggered seismicity associated with fluid injection. We invite contributions that investigate the mechanical and chemical effects of pore fluids on rock deformation and fault slip. Approaches that merge results of rock deformation experiments and field observations to understand geophysical observations, as well as those that use geophysical observations to infer mechanical processes, are particularly encouraged.
Melodie E French (University of Maryland)
John D Platt (Carnegie Institution for Science)
David L Goldsby (University of Pennsylvania)
Thomas M Mitchell (University College London)
Scientists of the Eastern North American Margin (ENAM) Community Seismic Experiment (CSE) gathered marine seismic data along several 2-D lines offshore North Carolina in September and October 2014 using the acoustic source of the R/V Marcus Langseth and ocean-bottom seismometers of the US OBS Instrument Pool that were deployed from the R/V Endeavor. More information on this project can be found on the GeoPRISMS web site for the Eastern North American Margin (ENAM) primary site (http://geoprisms.org/initiatives-sites/rie/enam/), including a web link to download the seismic data from the R/V Marcus Langseth and the OBS data from the R/V Endeavor. The air-gun shots from the R/V Marcus Langseth were also recorded by an array of land seismic stations from IRIS/PASSCAL in the adjacent coastal plain of the ENAM CSE work area. The onshore-offshore data have now been released, and they are available from the LDEO/UTIG Academic Seismic Portal at:
Processed Endeavor OBS data can be downloaded from the Academic Seismic Portal as well at:
For more information on the ENAM Community Seismic Experiment, visit http://www.ig.utexas.edu/enam/