Month: July 2020

We are excited to celebrate 20 years of combined MARGINS + GeoPRISMS Science by convening a session at the virtual AGU 2020 titled  “Advances in Understanding Continental Margin Evolution: Two Decades of GeoPRISMS and MARGINS Science.”

https://agu.confex.com/agu/fm20/prelim.cgi/Session/103961

We invite a wide range of abstracts that capture this incredible period of multidisciplinary and amphibious science. We encourage abstracts that bring together disciplines and datasets to address a specific research problem or knowledge gap within the scope of GeoPRISMS or MARGINS science. The scientific objectives of the GeoPRISMS program can be found at / .

Abstracts for AGU 2020 will be accepted through July 29, 2020.

We look forward to celebrating the incredible science accomplished by this community!

Jennifer Wade (NSF)
Demian Saffer (UT Austin)
Katie Kelley (URI)
Harm Van Avendonk (UT Austin)

____________________________

Session ID: 103961

Session Title: Advances in Understanding Continental Margin Evolution: Two Decades of GeoPRISMS and MARGINS Science

Section: Tectonophysics

Over the past two decades, the GeoPRISMS and MARGINS programs have brought together a vibrant community of geoscientists to conduct computational, laboratory, and large scale field experiments that span the shorelines of continental margins. These interdisciplinary investigations aim to understand Earth’s most active tectonic, mass transfer, and sedimentary systems, and have yielded new insights into processes that underlie both active and passive margin evolution, and major geohazards that affect population centers, including large earthquakes, volcanic eruptions, tsunamis, and landslides. In this session, we invite presentations that contribute to advancing and integrating the research efforts of these two decadal programs and their associated communities, including research at focus/primary sites, allied thematic studies, and particularly work that uses large and diverse datasets to synthesize geophysical, geochemical, numerical, and/or experimental investigations to illuminate and quantify fundamental processes that control deformation and mass flux at active subduction zones, continental rift systems, and passive margins.

1) Postdoctoral position in GMT software development – Department of Earth Sciences at the University of Hawaii at Mānoa
2) MS or PhD position available in petrology/volcanology – University of Maryland, College Park

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1) Postdoctoral position in GMT software development – Department of Earth Sciences at the University of Hawaii at Mānoa

A full-time postdoctoral position is available in the Department of Earth Sciences in the School of Ocean and Earth Science and Technology at the University of Hawaii at Mānoa to participate in funded research in support of the maintenance and development of the Generic Mapping Tools (GMT; www.generic-mapping-tools.org). A one-year initial appointment is anticipated, with the possibility of up to two years extension, depending on progress and availability of funds.

The successful applicant will be a highly motivated, independent researcher with extensive programming experience (including C and Python), familiarity with modern software development (GitHub, Continued Integration, static analyzers, profiling) and will assist Dr. Wessel, Dr. Uieda, and the GMT team in strengthening the GMT C core and evolving the PyGMT wrapper. Applicants must have completed a PhD in data science or the physical sciences at the time of appointment, with a preference for geophysics, and must be proficient in spoken and written English. The position is open immediately and will remain open until an appointment is made. Tele-working is possible if you are located in the US. The position pays a salary of up to USD $70,000/year depending on qualifications, plus fringe benefits.

To apply you must use the RCUH job posting system:
https://hcmweb.rcuh.com/psp/hcmprd_exapp/EMPLOYEE/HRMS/c/HRS_HRAM.HRS_APP_SCHJOB.GBL?Page=HRS_APP_JBPST&Action=U&FOCUS=Applicant&SiteId=3&JobOpeningId=220288&PostingSeq=1

to submit your application. Make sure your cover page includes a statement of research objectives and a statement of skills or experience suitable for contributing to GMT development. Questions should be addressed to Dr. Paul Wessel (pwessel@hawaii.edu). Information on the Department can be found at Department of Earth Sciences at UH Manoa | Home. The University is an Equal Opportunity/Affirmative Action Institution.

Paul Wessel, Professor and Chair
Dept. of Earth Sciences (formerly Geology & Geophysics)
SOEST, U of Hawaii at Manoa

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2) MS or PhD position available in petrology/volcanology – University of Maryland, College Park

MS or PhD position available in petrology / volcanology: How variable is magma decompression rate during a single eruption?

The Planetary Volcanism Laboratory at the University of Maryland, College Park (UMD) has an opening for a Master’s or PhD student, with a preferred start date of January, 2021.

A funded project is available to study temporal variations in the decompression rate of magma erupted at Cinder Cone, Lassen Volcanic National Park, CA. The exceptionally well-preserved tephra sequence at Cinder Cone captures a transition in eruptive style from Hawaiian/Strombolian to Strombolian/Violent Strombolian, providing an excellent natural laboratory for studying the role of decompression rate as a control on eruptive style.

We seek a highly motivated candidate who is excited about:

• Volcanoes!
• Sample collection in Lassen Volcanic National Park, CA
• Coding and Math (great classes are available at UMD)
• Searching for crystals under a microscope
• Learning how to use analytical instrumentation (spectroscopy, electron microscopy, mass spectrometry)
• Applications will be accepted through the UMD graduate school online application system: https://gradschool.umd.edu/admissions/application-process/step-step-guide-applying

Application requirements for the Geology program are detailed here: https://gradschool.umd.edu/computermathematicalnatural-sciences/geol

Please contact Megan (Newcombe@umd.edu) for additional information. The Planetary Volcanism Lab is committed to being a diverse, friendly and inclusive environment. Members of under-represented minority groups are particularly encouraged to apply.

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Please note, new job announcements (usually) will be distributed to the GeoPRISMS Listserv on the 1st and 15th of each month.

Please see below for sessions of interest to the GeoPRISMS Community, taking place at the 2020 AGU Fall Meeting, December 7-11. Note that AGU Fall Meeting will be mostly virtual.

AGU abstract submission is now open until July 29.

https://www.agu.org/fall-meeting

Submit your abstract: https://www2.agu.org/en/Fall-Meeting/Pages/Submit-an-abstract

Your session is not listed? Email us at info@geoprisms.nineplanetsllc.com to include your session to the list.

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T032 | Where is the melt during the evolution of continental rifting?

https://agu.confex.com/agu/fm20/prelim.cgi/Session/101051

Conveners: D. Sarah Stamps (Virginia Tech), Emmanuel Njinju (Virginia Tech), Micah Mayle (Colorado State University), Dennis Lee Harry (Colorado State University)

Abstract: Continental rupture requires weakening mechanisms to overcome lithospheric strength. Magma is one factor that can play a critical role in accommodating strain partitioning during continental rifting. Ample evidence supports that melt weakens the lithosphere in magma-rich rift systems, such as in Iceland and the Main Ethiopian Rift in East Africa. In addition, the potential role of deep crustal and/or mantle melt in magma-poor rifts may also be important. Geochemical, seismic, magnetotelluric, and gravity data have shed some light on the locations of magma at depth in continental rifts, and geodynamic modeling helps isolate the distribution of melt. In this session, we welcome submissions focused on advancing our understanding of the role of, causes of, and locations of melt at depth during continental rifting. Both evidence-based and geodynamic modeling studies are encouraged that may address continental rifting at any phase of development.

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V001 | A Multidisciplinary Approach to Investigating Crustal Processes

https://agu.confex.com/agu/fm20/prelim.cgi/Session/103929

Conveners: Wentao Cao (SUNY Fredonia), Silvio Ferrero (University of Potsdam), Chris Yakymchuk (University of Waterloo)

Abstract: The Earth’s crust is a dynamic place where essential geological processes (e.g. magmatism, metamorphism, and metasomatism) occur. Examining igneous and metamorphic rock records is key to improving our understanding of the crust, from its chemical compositions, geochemical characteristics, and structural properties to the geochemical differentiation and tectonic evolution of the Earth’s lithosphere from the Archean to the present. Various techniques, including geochemical, geochronological, experimental and modeling methods can be applied to investigate composition, conditions, processes, timing, timescale and rate of crustal processes. This session welcomes contributions that advance our understanding of crustal processes in all aspects. Related research includes but not limited to formation and evolution of continental crust, petrological, geochemical and geochronological investigations of crustal materials, experimental studies of crustal materials, phase equilibrium modeling of crustal processes, and geodynamic modeling.

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V021 | SZ4D: How Do Processes Within Transcrustal Magma Systems Initiate Eruptions at Arc Volcanoes?

https://agu.confex.com/agu/fm20/prelim.cgi/Session/105911

Conveners: Adam J R Kent (Oregon State University), Claire E Bucholz (California Institute of Technology), Patricia M Gregg (University of Illinois at Urbana-Champaign), Eric Kiser ( University of Arizona)

Abstract: Understanding the processes that lead to initiation of volcanic eruptions at arc volcanoes lies at the frontier of subduction zone science. In this session we seek contributions from geology, geochemistry, petrology, geodesy, seismology, numerical modeling and other disciplines that investigate processes that promote the initiation of volcanic eruptions and provide a greater understanding of the complex transcrustal-scale magma plumbing systems that feed these events.

This session is organized by the Magmatic Drivers of Eruption (MDE) working group of the Subduction Zones in Four Dimensions (SZ4D) Research Coordination Network. This is an initiative to propose a new program to study subduction zones – the places where tectonic plates converge and collide – through both space and time, with a focus on the fundamental processes underlying geologic hazards such as great earthquakes, tsunamis, landslides, and volcanic eruptions.

Note that part of this session will be held as a discussion panel, but we are also soliciting abstracts for additional sessions.

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MR004 | Elasticity: Connecting the Properties of Minerals to Planetary Models

https://agu.confex.com/agu/fm20/prelim.cgi/Session/105894

Conveners: Elizabeth Thompson (Sewanee: The University of the South), Renata Wentzcovitch (Columbia University), Jung-Fu Lin (University of Texas at Austin), Han Hsu (National Central University of Taiwan)

Abstract: In order to understand the structure and composition of the Earth and its moon, we rely on our understanding of the elastic properties of potential constituent materials to inform interpretations of seismic velocities and geodynamical models. More recently, elastic constraints have also become invaluable in our efforts to better understand the structure and composition of Mars. This session aims to bring together computational and experimental researchers who determine the elastic properties of geological materials and melts with the researchers who employ these constraints to interpret tomographic models and those who develop novel geodynamical models of planetary bodies.

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DI002 | A Multidisciplinary Approach to Understanding Volatiles in Earth’s Mantle

https://agu.confex.com/agu/fm20/prelim.cgi/Session/101837

Conveners: Dan Rasmussen (Smithsonian NMNH), Doug Wiens (Washington University), Megan Duncan (Virginia Tech), and Cara Vennari (University of Chicago)

Volatiles are fundamental to the physical, chemical, and biological evolution of the Earth. The mantle is a large reservoir for volatiles and plays an important role in volatile cycling between Earth systems. Even at low concentrations, such storage exerts key controls over the physical properties of the mantle that shape the geodynamic processes. Despite their importance, volatile contents in and fluxes in and out the mantle remain poorly constrained. Our knowledge of the volatile content and movement in the mantle stems from both direct and indirect observations of volatiles in igneous and metamorphic rocks, high pressure and temperature experiments and simulations, numerical models of mantle convection, and seismic observations. This session aims to bring together interested parties that draw observations from the surface with those who study the system at depth. We invite contributions multiple disciplines including, volcanology, geochemistry, mineral physics, seismology, and geodynamics.

Invited Presenters: Wendy Panero (Ohio State University) and Krister S. Karlsen (University of Oslo)

Dear Seafloor Geodetic Community*,

As a precursor to our Workshop on Seafloor Geodesy (which is postponed until 2021), we are putting together a series of engagement opportunities, including at least two 1-hour webinars, and a request for whitepapers, with the opportunity to give brief online overviews of the topics within.

The first  webinar will be given by Roland  Bürgmann from U.C. Berkeley on the current state-of-the-art in Seafloor Geodesy, and will be held on August 3rd at 2pm EDT (1p CDT, 12p MDT, 11a PDT, 18:00 UTC).

Please register at the below link (space may be limited):

https://zoom.us/webinar/register/WN_D60Gw_RvQPCu26MrB_8-DA

For the Organizing Committee,

-Andy

*Seafloor Geodetic Community: Future, emergent, and established seafloor geodetic researchers/educators/decision-makers

Dear Colleagues,

In honor of 20 years of combined MARGINS + GeoPRISMS Science, we are convening a session at the virtual AGU 2020 titled  “Advances in Understanding Continental Margin Evolution: Two Decades of GeoPRISMS and MARGINS Science.”

We are excited to invite a wide range of abstracts that capture this incredible period of multidisciplinary and amphibious science. We encourage abstracts that bring together disciplines and datasets to address a specific research problem or knowledge gap within the scope of GeoPRISMS or MARGINS science. The scientific objectives of the GeoPRISMS program can be found at / .

Abstracts for AGU 2020 will be accepted through July 29, 2020.

We look forward to celebrating the incredible science accomplished by this community!

Jennifer Wade (NSF)
Demian Saffer (UT Austin)
Katie Kelley (URI)
Harm Van Avendonk (UT Austin)

_____________________________

Session ID: 103961

Session Title: Advances in Understanding Continental Margin Evolution: Two Decades of GeoPRISMS and MARGINS Science

Section: Tectonophysics

https://agu.confex.com/agu/fm20/prelim.cgi/Session/103961

Over the past two decades, the GeoPRISMS and MARGINS programs have brought together a vibrant community of geoscientists to conduct computational, laboratory, and large scale field experiments that span the shorelines of continental margins. These interdisciplinary investigations aim to understand Earth’s most active tectonic, mass transfer, and sedimentary systems, and have yielded new insights into processes that underlie both active and passive margin evolution, and major geohazards that affect population centers, including large earthquakes, volcanic eruptions, tsunamis, and landslides. In this session, we invite presentations that contribute to advancing and integrating the research efforts of these two decadal programs and their associated communities, including research at focus/primary sites, allied thematic studies, and particularly work that uses large and diverse datasets to synthesize geophysical, geochemical, numerical, and/or experimental investigations to illuminate and quantify fundamental processes that control deformation and mass flux at active subduction zones, continental rift systems, and passive margins.

Please see below for sessions of interest to the GeoPRISMS Community, taking place at the 2020 AGU Fall Meeting, December 7-11. Note that AGU Fall Meeting will be mostly virtual.

AGU abstract submission is now open until July 29.

https://www.agu.org/fall-meeting

Submit your abstract: https://www.agu.org/Fall-Meeting/2020/Present/Abstracts

T002 | Advances in Understanding Continental Margin Evolution: Two Decades of GeoPRISMS and MARGINS Science
T011 | From trench to back-arc: Dynamics of the Hikurangi subduction zone
T012 | Geophysical, Mechanical, and Geologic Constraints on the Subduction Interface

Email us at info@geoprisms.nineplanetsllc.com to include your session to the list.

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T002 | Advances in Understanding Continental Margin Evolution: Two Decades of GeoPRISMS and MARGINS Science

https://agu.confex.com/agu/fm20/prelim.cgi/Session/103961

Conveners: Jennifer A Wade (National Science Foundation), Demian M Saffer (Pennsylvania State University), Katherine A Kelley (University of Rhode Island), Harm J Van Avendonk (University of Texas at Austin)

Over the past two decades, the GeoPRISMS and MARGINS programs have brought together a vibrant community of geoscientists to conduct computational, laboratory, and large scale field experiments that span the shorelines of continental margins. These interdisciplinary investigations aim to understand Earth’s most active tectonic, mass transfer, and sedimentary systems, and have yielded new insights into processes that underlie both active and passive margin evolution, and major geohazards that affect population centers, including large earthquakes, volcanic eruptions, tsunamis, and landslides. In this session, we invite presentations that contribute to advancing and integrating the research efforts of these two decadal programs and their associated communities, including research at focus/primary sites, allied thematic studies, and particularly work that uses large and diverse datasets to synthesize geophysical, geochemical, numerical, and/or experimental investigations to illuminate and quantify fundamental processes that control deformation and mass flux at active subduction zones, continental rift systems, and passive margins.

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T011 | From trench to back-arc: Dynamics of the Hikurangi subduction zone

https://agu.confex.com/agu/fm20/prelim.cgi/Session/102769

Conveners: Christine Chesley (Lamont -Doherty Earth Observatory), Laura Wallace (GNS Science-Institute of Geological and Nuclear Sciences Ltd, University of Texas), Andrew Gase (University of Texas), and Geoff Kilgour (GNS Science-Institute of Geological and Nuclear Sciences Ltd)

The Hikurangi subduction zone off New Zealand’s North Island exhibits intriguing variations in volcanic, tectonic, and megathrust slip processes making it an outstanding natural laboratory to probe these processes. With support from NSF, IODP, GeoPRISMS, and numerous New Zealand and international agencies, many geophysical, geological, and geochemical studies have recently been carried out to investigate the interplay of these variations, especially as they relate to plate boundary tectonics and the diverse controls on volcanism. We welcome submissions that improve our understanding of the Hikurangi subduction system, including the role of fluids, volatiles, and sediments in subduction and volcanic processes, factors controlling megathrust earthquakes and slow slip events, offshore gas hydrates and slope instability, the generation and transport of magma, and comparative studies from other subduction margins. We encourage a diversity of methods for addressing these topics, such as electromagnetism, seismology, geodesy, gravity, numerical modeling, scientific drilling, petrology, and structural geology.

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T012 | Geophysical, Mechanical, and Geologic Constraints on the Subduction Interface

https://agu.confex.com/agu/fm20/prelim.cgi/Session/104013

Conveners: Helen A Janiszewski (University of Hawaii at Manoa), Cailey Brown Condit (University of Washington), Noel M Bartlow (University of California Berkeley), Melodie E French (Rice University)

Our understanding of subduction interface slip behavior and structure comes from integration of geophysical imaging, experimental studies, and observations from the rock record. The rheology and structure of the plate interface are essential components influencing slip behavior of the subduction plate boundary. Interpretation of geophysical observations at these zones is inherently dependent on fundamental rock properties; likewise understanding of the deformation of these materials depends on experimental and geologic studies, and numerical modeling. In this session, we aim to engage an interdisciplinary research community, drawing from seismology, magnetotellurics, rock mechanics, geodesy, and geology, focused on constraining the structure and slip properties along the subduction plate interface. Work extending from the trench, across the seismogenic zone to the locations of deep episodic tremor and slip are encouraged. We will highlight research results from the past decade of GeoPRISMS focus sites, Cascadia, Alaska/Aleutians, and Hikurangi, but welcome submissions outside of these areas.