C-DEBI Newsletter – January 15, 2019
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Publications & Press

Geochemistry, Geophysics, Geosystems
Geology and Fluid Discharge at Dorado Outcrop, a Low Temperature Ridge-Flank Hydrothermal System - NEW!
Charles Geoffrey Wheat*, Anne M. Hartwell, James McManus*, Andrew T. Fisher*, Beth N. Orcutt*, Lucy E. Schlicht, Sara Niedenzu, Wolfgang Bach
*C-DEBI Contribution 456

Two expeditions to Dorado Outcrop on the eastern flank of the East Pacific Rise and west of the Middle America Trench collected images, video, rocks and sediment samples and measured temperature and fluid discharge rates to document the physical and biogeochemical characteristics of a regional, low‐temperature (~15°C) hydrothermal system. Analysis of video and images identified lava morphologies: pillow, lobate, and sheet flows. Glasses from collected lavas were consistent with an off‐axis formation. Hydrothermal discharge generally occurs through pillow lavas, but is patchy, sporadic, and sometimes ceases at particular sites of discharge. Year‐long temperature measurements at five of these discharge sites show daily ranges that oscillate with tidal frequencies by 6°C or more. Instantaneous fluid discharge rates (0.16 to 0.19 L s‐1) were determined resulting in a calculated discharge of ~200 L s‐1 when integrated over the area defined by the most robust fluid discharge. Such discharge has a power output of 10‐12 MW. Hydrothermal seepage through thin sediment adjacent to the outcrop accounts for <3% of this discharge, but seepage may support an oxic sediment column. High extractable Mn concentrations and depleted δ13C in the low but variable organic solid phase suggest hydrothermal fluids provide a source for manganese accumulation and likely enhance the oxidation of organic carbon. Comparisons of the physical and geochemical characteristics at Dorado and Baby Bare Outcrops, the latter being the only other site of ridge‐flank hydrothermal discharge that has been sampled directly, suggest commonalities and differences that have implications for future discoveries.

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Eos: In Search of Life Under the Seafloor - NEW!
A multinational research team drilled into the seafloor (IODP 357: Atlantis Massif Serpentinization and Life) to see whether chemical processes in exposed shallow mantle rocks could generate nutrients to support life in the subsurface. The recent Eos Project Update is provided by Expedition Co-Chief Scientists Gretchen L. Früh-Green and Beth N. Orcutt.


Meetings & Activities

DCO Webinar: Breaking the mold of the traditional field expedition: Biology Meets Subduction
The live webinar with Peter Barry (University of Oxford, UK), Karen Lloyd (University of Tennessee Knoxville, USA), and Donato Giovannelli (CNR-IRBIM, Italy and Rutgers University, USA) will be held January 23, 2019 at 11am PT / 2pm ET.

16th SoCal Geobiology Symposium @ CalTech, April 6, 2019 - UPDATED!
Registration is now open! The deadline to be considered for an oral presentation is February 8, 2019, so don’t wait too long! We will continue to accept general registration and poster abstracts after that date, but please sign up as soon as possible to aid us in logistical planning.

IODP-USSSP: Instituting U.S. Scientific Ocean Drilling Beyond 2023 (SOD23+) - NEW!
As you are aware, scientific ocean drilling is half a century old this year, marked by the maiden voyage of the Glomar Challenger in 1968. Discoveries from scientific ocean drilling through the DSDP, ODP and IODP programs have helped reveal Earth’s history and have been critical to shaping our understanding of how our planet works. But although results from scientific ocean drilling have never have been stronger, addressing future challenges in the Earth sciences will require improved technologies that are not currently available on the JOIDES Resolution. The current phase of scientific ocean drilling will end after 2023, which is only five years away. At that same time the JOIDES Resolution will be 45 years old. In short, we are approaching a critical point with the current science plan expiring and the JOIDES Resolution in need of a replacement. Continuation of scientific ocean drilling beyond 2023 requires planning and action now. We are co-chairing the steering committee Instituting U.S. Scientific Ocean Drilling Beyond 2023 (SOD23+) to lead the U.S. planning for the post-2023 era in scientific ocean drilling and need broad input and support from the U.S. and international communities to consider the scientific plan and our future platform needs. In order to prepare the U.S. community for this critical time, we are organizing a two-day Workshop on May 6-7, 2019 in Denver that will bring together roughly 80-90 U.S.-IODP researchers and perhaps 20 international collaborators from non-U.S. IODP countries. Application window to the Denver3 Workshop opens January 28, 2019 and closes February 15, 2019.

UC Boulder: Third Annual Rocky Mountain Geobiology Symposium, April 6, 2019 - UPDATED!
Registration is now open! The abstract submission deadline is February 15, 2019, and registration deadline (without abstract submission) is March 20, 2019.

AbSciCon 2019: Session on "Lessons from Earth Analogs to Inform the Search for Life in the Universe" - NEW!
Attending the Astrobiology Science Conference taking place from June 24-28, 2018 in Seattle, Washington? Submit your abstract to our session and we hope to see you there! Description: Recent discoveries on ocean worlds as well as remnants of ancient aqueous environments on Mars set important foundations in the search for extraterrestrial life. To better prioritize targets for investigation, select high-value analysis sites, and develop exploration strategies for potential ancient or extant biosignatures, a diverse set of analog environments on Earth are extremely valuable. Given the rapidly emerging nature of the field, as well as the ocean world missions under development, key details of how such findings translate into habitability are timely. We welcome in particular abstracts addressing geological contexts or spatial scales that could inform the search for habitable environments or biosignatures on our solar system’s Ocean Worlds. Relevant work will contextualize terrestrial studies – including those pertaining to Pre-Cambrian glacial “Snowball” conditions – within the framework of aqueous paleoenvironments on Mars and our expanding knowledge of celestial bodies like Europa, Enceladus, Titan, Ceres, and Triton. Subjects could include (but are not limited to) geophysical analyses that constrain habitable environments or geochemical gradients, assessments of energetics for past or extant life, the effect of ice cover on physical and chemical processes, or biological activity that could generate diagnostic biomarkers. We also encourage “process-based” abstracts that detail how the exploratory approaches used in terrestrial contexts – such as mission operations, instrument testing, and field site selection – may be mobilized in support of the future astrobiology missions. Abstracts are due March 6, 2019.

Goldschmidt: Session 09c: Biogeochemical Cycling in Changing Glacial Habitats and Downstream Ecosystems
Abstract submission opens January 15, 2019, and closes March 29, 2019.

IODP Workshop: IBM Arc System & Analogs - NEW!
The workshop Anatomy of a Long-Lived Oceanic Arc: Geology, Geophysics and Geochemistry of the Izu-Bonin-Mariana Arc System and Analogs aims to: (1) review the results of extensive drilling by four recent IODP expeditions; (2) review other (non-drilling) approaches used to study the Izu-Bonin-Mariana (IBM) system; (3) present mantle and ocean floor drilling objectives in other systems and synthesize these with IBM results and goals; (4) make comparisons with arc and ophiolite field analogs around the globe; and (5) identify avenues for future collaborative research. The workshop will involve synthesizing results in the IBM arc system and analogous modern systems and outcrop analogs, a mid-week field trip to examine IBM rocks, and targeted discussion of thematic and geographic areas ideal for collaborative research, synthesis papers, and new research proposals. A number of travel support grants will be available for participants from U.S. institutions and organizations. Support for a limited number of international participants will need to be provided by individuals or IODP member countries. In addition to scientists within the IODP community and early career researchers, we also encourage researchers, including field geologists and modelers, who do not normally participate in IODP projects to apply. Workshop participation is open to U.S. and international researchers and the deadline to apply is May 1, 2019.

Ongoing Activities:


Education & Outreach

MARUM: ECORD Training Course, March 25-29, 2019
Application deadline: January 18, 2019.

SALSA: Follow the Subglacial Antarctic Lakes Scientific Access Project, December 2018 - January 2019

CalTech: Geobiology 2019: An International Training Course in a Rapidly Evolving Field
Applications are due by February 8, 2019.

Bigelow: Undergraduate Research Experience - NEW!
Undergraduates in Bigelow Laboratory’s summer REU Program spend ten weeks at the Laboratory conducting independent research with guidance from a scientist mentor. Directed by Senior Research Scientist Dr. David Fields, and funded by the National Science Foundation, the REU Program is designed to give students pursuing degrees in the sciences, mathematics and engineering a laboratory-based research experience with an emphasis on hands-on, state-of-the-art methods and technologies. REU students are immersed in the Bigelow community and participate in seminars, field trips, Laboratory outreach programs, social events, and more. Each student in the program is paired with a Bigelow Laboratory scientist based on mutual research interests. During the ten weeks, students work with their mentors to identify a research question, develop a proposal, conduct their research, and prepare an abstract and poster. At the end of the program, students present their poster and give a talk at a student symposium. Research areas vary year to year, but include marine microbiology, ocean biogeochemistry, optical oceanography, remote sensing, bioinformatics, sensory biology and phytoplankton ecology. The 2019 program dates are May 28 through August 2 and will be held at the Laboratory’s East Boothbay campus. Successful applicants receive a stipend, free housing, and funds for travel to and from Bigelow Laboratory. Application period closes February 15, 2019.


Proposal Calls

NOPP: FY2019 Broad Agency Announcement
Proposal deadline January 18, 2019.

NSF: Understanding the Rules of Life (URoL): Epigenetics
Full proposal deadline: February 1, 2019.

IODP-USSSP: Apply to Sail on Expedition 387: Amazon Margin
The deadline to apply is March 1, 2019.

IODP-USSSP: Apply to Sail on Expedition 388: Equatorial Atlantic Gateway
The deadline to apply is April 1, 2019.

NSF: Opportunities for Promoting Understanding through Synthesis (OPUS)
Full proposal deadline: August 5, 2019.

Rolling Calls:




USGS: Mendenhall Research Fellowship Program
The deadline for submission is Friday, January 18, 2019.

UC San Diego: Organismal Physiologist or Zooplankton Ecologist / Curator - Assistant Professor - NEW!
Scripps Institution of Oceanography (SIO) at the University of California San Diego (UCSD) seeks outstanding candidates for a position to fill one of two roles: 1) Organismal Physiologist, or 2) Zooplankton Ecologist/Curator, at Assistant Professor rank. Candidates will be evaluated on their potential to establish a vigorous research program and provide intellectual leadership in their field, acquire extramural funds, teach and mentor graduate students, teach in the marine biology undergraduate major, collegiality, and service towards building an equitable and diverse scholarly environment. For full consideration, please apply by January 31, 2019.

UC San Diego: Organismal Physiologist or Zooplankton Ecologist/Curator - Associate Professor - NEW!
See description above, but at the Associate Professor level. For full consideration, please apply by January 31, 2019.

MSU: Assistant/Associate Professor of Environmental Microbiology
Screening of applications will begin on February 1, 2019; however, applications will continue to be accepted until an adequate applicant pool has been established.

Princeton University: Assistant Professor

U Toronto: Postdoctoral Positions in Fluid-Rock Interactions and Deep Subsurface Life

UNC Chapel Hill: Guaymas Basin postdoc opportunity

TAMU: Instructional Assistant Professor

Don’t forget to email me with any items you'd like to share in future newsletters! We will also broadcast this information on our social media outlets, Twitter and Facebook. You are what makes our deep biosphere community!


Matthew Janicak
Data Manager
Center for Dark Energy Biosphere Investigations (C-DEBI)
University of Southern California
3616 Trousdale Pkwy, AHF 209, Los Angeles, CA 90089-0371
Phone: 708-691-9563, Fax: 213-740-2437

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