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Presentations by Keck Geology Consortium Projects at AGU 2017

Presentations by Keck Geology Consortium Projects at AGU 2017

American Geophysical Union Annual Meeting

December 11-15, 2017 New Orleans, Louisiana

Thursday, 14 December 2017; 8:00 – 12:20 pm

New Orleans Ernest N. Morial Convention Center; Poster Hall D-F

H41C-1455: AN INVESTIGATION OF THE STABLE ISOTOPES, GEOCHEMISTRY AND MORPHOLOGY OF MAJOR STREAMS IN DOMINICA, LESSER ANTILLES: 2014 – 2017

Dexter Charles Kopas (Beloit College), Erouscilla P Joseph (University of the West Indies), Holli M Frey (Union College)


Thursday, 14 December 2017; 13:40 – 16:00 pm

New Orleans Ernest N. Morial Convention Center; Poster Hall D-F

V43A-0514: COLD, WET, AND DEEP: ANDESITE GENERATION IN DOMINICA, LESSER ANTILLES

Holli M Frey (Union College), Laura E. Waters (National Museum of Natural History), Matthew R. F. Manon (Union College)

V43A-0516: EXPLOSIVE TO EFFUSIVE TRANSITION IN INTERMEDIATE VOLCANISM: AN ANALYSIS OF CHANGING MAGMA SYSTEM CONDITIONS IN DOMINICA

Jessie Bersson (Whitman College), Laura E. Waters (National Museum of Natural History), Holli M Frey (Union College), Kirsten P Nicolaysen (Whitman College), Matthew R. F. Manon (Union College)

V43A-0517: EVALUATING CHANGES IN PRE-ERUPTIVE CONDITIONS OF EXPLOSIVELY AND EFFUSIVELY ERUPTED INTERMEDIATE MAGMAS

Justin Gilbert Casaus (Sonoma State University), Laura E. Waters (National Museum of Natural History), Holli M Frey (Union College), Matthew R. F. Manon (Union College)

V43A-0518: RE-EXAMINING DISTAL FACIES OF THE GRAND BAY IGNIMBRITE AT FOND ST. JEAN, DOMINICA

Nolan Ebner (Macalester College), Holli M Frey (Union College), Karl R Wirth (Macalester College), Laura E. Waters (National Museum of Natural History), Matthew R. F. Manon (Union College)

V43A-0519: MAGMA MIXING: MAGMATIC ENCLAVES IN MORNE MICOTRIN, DOMINICA

Sarah Hickernell (Union College), Holli M Frey (Union College), Matthew R. F. Manon (Union College), Laura E. Waters (National Museum of Natural History)

V43A-0520: STRATIGRAPHY AND GEOCHEMISTRY OF A FOND ST. JEAN CINDER CONE, DOMINICA

Taryn Isenburg (Mount Holyoke College), Holli M Frey (Union College), Laura E. Waters (National Museum of Natural History), Steve Dunn (Mt. Holyoke), Matthew R. F. Manon (Union College)

V43A-0521: VARIATIONS IN PLEISTOCENE EFFUSIVE VOLCANISM ON DOMINICA, LESSER ANTILLES

Abadie Ludlam (Union College), Holli M Frey (Union College), Laura E. Waters (National Museum of Natural History), Matthew R. F. Manon (Union College)

V43A-0522: EVIDENCE FOR COLD, HYDROUS PARENTAL MAGMAS ON DOMINICA: PETROLOGY OF THE FOUNDLAND BASALTS

Kathryn Ruth VonSydow (California State University San Bernardino), Laura E. Waters (National Museum of Natural History), Holli M Frey (Union College), Matthew R. F. Manon (Union College)


Friday, 15 December 2017; 8:00 – 12:20 pm

New Orleans Ernest N. Morial Convention Center; Poster Hall D-F

EP51A-1636: LANDSLIDES AND VOLCANOES: FINGERPRINTING EROSIONAL PROCESSES ON A TROPICAL ISLAND, DOMINICA, LESSER ANTILLES

Kira Tomenchok (Washington and Lee University), Marcus Hill (Oberlin College), Cole Jimerson (College of Wooster), Haley Talbot-Wendlandt (Ohio Wesleyan University), Amanda Schmidt (Oberlin College), Holli M Frey (Union College)

V51C-0359: INVESTIGATION OF MINERAL ALTERATION IN ANDESITE AND DACITE FROM THREE DIFFERENT VOLCANO HYDROTHERMAL SYSTEMS ON DOMINICA, LESSER ANTILLES

Clarissa Itzel Villegas Smith (Carleton College), Holli M Frey (Union College), Erouscilla P Joseph (University of the West Indies), Matthew R. F. Manon (Union College)

V51C-0360: INVESTIGATING VOLCANIC-HYDROTHERMAL SYSTEMS IN DOMINICA, LESSER ANTILLES: TEMPORAL CHANGES IN THE CHEMICAL COMPOSITION OF HYDROTHERMAL FLUIDS FOR VOLCANIC MONITORING USING GEOTHERMOMETERS

Mazi-Mathias Chukwuezi Onyeali (University of Colorado), Erouscilla P Joseph (University of the West Indies), Holli M Frey Union College

 

Presentations by Keck Geology Consortium Projects at GSA 2017

Presentations by Keck Geology Consortium Projects at GSA 2017

The Geological Society of America 129th Annual Meeting

October 22-25, 2017 Seattle, Washington

Presentations by Keck Geology Consortium Projects at GSA 2017

Sunday, 22 October 2017; 09:25 AM – 09:40 AM

The Conference Center; Tahoma 1

25-6: GLACIOVOLCANIC MEGAPILLOWS OF UNDIRHLITHAR, REYKJANES PENINSULA, SOUTHWESTERN ICELAND

Rachel Heineman (Oberlin College), Meagen Pollock (The College of Wooster), Ben Edwards
(Dickinson College), F. Zeb Page (Oberlin College), Cara Lembo (Amherst College), Michelle
Orden (Dickinson College), Chloe Wallace (The College of Wooster)


Monday, 23 October 2017; 09:00 AM – 06:30 PM

Washington State Convention Center; Halls 4EF

153-28: NEW COSMOGENIC AND VML DATES AND REVISED EMPLACEMENT HISTORY OF THE ICE SPRINGS VOLCANIC FIELD IN THE BLACK ROCK DESERT, UTAH

Samuel Patzkowsky (Franklin & Marshall), Emily Randall (The College of Wooster), Madison Lilith
Rosen (Mount Holyoke College), Addison Thompson (Pitzer College), Pa Nhia Moua (Carleton
College), Krysden Schantz (The College of Wooster), Meagen Pollock (The College of Wooster),
Shelley A. Judge (The College of Wooster), Michael Williams (The College of Wooster), Cameron
Matesich (The College of Wooster)


Monday, 23 October 2017; 09:00 AM – 06:30 PM

Washington State Convention Center; Halls 4EF

153-50: YELLOW CEDAR GROWTH RESPONSE TO DECADAL CLIMATIC SHIFTS AT CEDAR LAKE, JUNEAU, ALASKA

Joshua Charlton (The College of Wooster), Alora Josephin Cruz (Macalester College), Myron
Malisse Lummus (Trinity University), Kerensa Loadholt (Oberlin College), Christopher Messerich
(Washington and Lee University), Gregory Wiles (The College of Wooster), Brian Buma (University
of Alaska Southeast), John Krapek (University of Alaska Southeast)


Monday, 23 October 2017; 11:15 AM – 11:30 AM

Washington State Convention Center; Room 609

97-13: PRELIMINARY RESULTS FROM PLIOCENE SEDIMENTS (ODP SITE 697), JANE BASIN, ANTARCTICA AND CIRCUM-ANTARCTIC WELL LOGS SHOW A STRONG OBLIQUITY SIGNAL

Eduardo Centeno (Wesleyan University), Andrew Hollyday (Middlebury College), Forrest W. Lloyd
(Beloit College), Mark LaPan (Colgate University), Suzanne O’Connell (Wesleyan University), J.D.
Ortiz (Kent State University), Sophia Ptacek (Wesleyan University), Noah Spriggs (Wesleyan
University)


Tuesday, 24 October 2017; 02:00 PM – 02:20 PM

Washington State Convention Center; Room 3A

233-3: KECK GEOLOGY CONSORTIUM: A PARTNERSHIP FOR BROADENING PARTICIPATION IN THE GEOSCIENCES THROUGH STUDENT-FACULTY COLLABORATIVE RESEARCH (Invited Presentation)

Karl Wirth (Macalester College), Cam Davidson (Carleton College)
Presentations by Keck Geology Consortium Projects at GSA 2017


Wednesday, 25 October 2017; 09:00 AM – 06:30 PM

Washington State Convention Center; Halls 4EF

356-1: SPATIAL PATTERNS OF EROSION ON DOMINICA, A VOLCANIC TROPICAL ISLAND

Haley Talbot-Wendlandt (Ohio Wesleyan University), Cole Jimerson (College of Wooster), Kira
Tomenchok (Washington and Lee University), Marcus Hill (Oberlin College), Amanda Henck
Schmidt (Oberlin College), Holli M. Frey (Union College)

IODP Focus Project Update

IODP Focus Project Update

Suzanne O’Connell (Wesleyan) and Joseph Ortiz (Kent State) led four students to the International Ocean Discovery Program core repository at Texas A&M University. They measured elemental data (XRF), magnetic susceptibility, and gamma-ray attenuation on Pliocene-age IODP cores from ODP Site 697, located in the Jane Basin off the tip of Antarctica. Post-processing is using principal component and wavelet analysis to look for changes in the depositional environment and identify an orbital signal.  Preliminary results show a strong obliquity signal. Samples were also taken for diatom identification and coarse fraction mineralogy (ice-rafted detritus).

See the abstract submitted to fall GSA meeting for more science details.

Dominica Frontier Project Update

Dominica Frontier Project Update

From June 9th to July 7th, Professor Holli Frey (Union College) successfully lead the premier Keck Frontier project “Hazards in the Caribbean: The history of magma chambers, eruptions, landslides, streams, and fumeroles in Dominica,” along with co-leaders, Amanda Schmidt (Oberlin), Erouscilla “Pat” Joseph (University of the West Indies), Laura Waters (Sonoma State University) and sixteen undergraduates from 15 schools across the United States. During a two-week period, based at the Archbold Tropical Research and Education Center on Dominica, students collected samples ranging from pumice clasts and ash from thick ignimbrite sequences, to enclaves and mingled magmas observed in extruded resurgent domes, to hydrothermally altered rocks and volcanic gasses, to river sediments and stream and hydrothermal waters, as well as measuring and creating entirely new stratigraphic columns for regions of the island. In total, we exported 57 water samples from Dominica (21 meteoric and 36 hydrothermal) in 285 vials and more than a dozen aliquots of volcanic gasses in Giggenbach flasks. We collected 70 rock samples (~345 lbs) and 20 sediment samples (~300 lbs).

Motivating scientific questions for projects based in volcanology and petrology included addressing the differences between the pre-eruptive conditions for the voluminous ignimbrite eruptions and their extruded counterparts, the resurgent domes. We are also establishing common petrologic characteristics and intensive variables (e.g. P, T, H2O) of the mafic lavas erupting on Dominica, as they are under documented and hypothesized to be parental to all erupted magmas. Volcanic gasses and hydrothermal waters were sampled to determine their geochemistry and isotopic composition in collaboration with the UWI Seismic Research Center for continued characterization of a potential monitor for volcanic unrest. In a synergistic project, hydrothermally altered samples were collected to determine the interplay between volcanic gasses, magmatic waters and intermediate igneous rocks that compose most of the bedrock. Water samples were collected from meteoric streams to continue a three-year long project monitoring project, determining what controls chemical/isotopic variation, and analyzing the potential lasting effects of severe tropical storms (i.e. Tropical Storm Erika, August 2015), which frequently trigger mass wasting events. River sediments were collected in order to evaluate the extent to which human land use impacts erosion rates on the island.

After field work, students traveled to Union College for a two-week period to conduct a variety of analyses including grain size analyses, wet chemistry, Inductively Coupled Plasma Mass Spectrometry (IC-PMS), x-ray diffraction (XRD) and quantitative scanning electron microscopy (SEM) with the essential support of Dr. Matt Manon (Union College). In total, 13 abstracts were submitted to the upcoming fall meeting of the American Geophysical Union. Initial petrologic findings based on two-oxide thermometry and plagioclase hygrometry indicate that both the effusive and eruptive products on Dominica are extraordinarily cold and hydrous (up to 9 wt% H2O!), which suggests a relatively deep source area for the magmas and has implications for the future volcanic hazard potential of the island. The volcanic gasses and hydrothermal waters show the effects of magmatic degassing and evaporation, with some variation from year to year, suggesting a very dynamic system. The meteoric waters appear to show the effects of changes in annual rainfall, but little influence of the tropical storm. GIS work identified 934 landslides on the island (~13% of area) and we are working to establishing basin average erosion rates and incision rates.

Project leaders express their gratitude for the funding received through the Keck Consortium, for the support and time investment of the fund administrators at both Macalester and Union Colleges, and for the operational support gifted by Dr. Matt Manon that was so fundamental to the success of this project.

Alaska Gateway Project Update

Alaska Gateway Project Update

Five Gateway Program students joined Greg Wiles (Wooster) in Juneau for a dendrochronological study of Yellow Cedar in Juneau, Alaska.  Their work supports the hypothesis that the trees are experiencing widespread mortality as a result of warmer springs, which promotes earlier melting of the insulating snowpack over the shallow root systems, making the trees susceptible to frost damage. Our study also provides well-replicated ring-width and BI records for further research on how trees respond to rapid climate change.  The “dendro” team also visited the Alaska State Museum and interacted with geoscientists from the University of Alaska.

 

Abstract submitted to Fall GSA Meeting:

Charlton, J., A. J. Cruz, M. M. Lummus, K. Loadholt, C. Messerich, G. Wiles, B. Burma, J. Krapek (2017). Yellow cedar growth response decadal climatic shifts at Cedar Lake, Juneau, Alaska. GSA Abstracts with Programs 49(6), dos: 10.1130/abs/2017AM-298740.

Utah Gateway Project Update

Utah Gateway Project Update

Meagen Pollock (Wooster) and five Gateway Program students used geochemical mapping to revise the boundaries of some of the lava flows in the Ice Springs Volcanic Field of the Black Rock Desert.  Our teamdetermined new ages for the lava flows that are approximately 10,000 years older than published estimates. This study also used geochemical mapping to revise the boundaries of some of the lava flows, further enhancing our understanding of the eruption behavior of compound polygenetic volcanoes.  Our research team also visited the Natural Museum History of Utah and interacted with geoscientists from the Utah Geological Survey Core Research Center.

Abstract Submitted to Fall GSA Meeting:

Patzkowsky, S., E. Randall, M. L. Rosen, A. Thompson, P. N. Moua, K. Schantz, M. Pollock, S. A. Judge, M. Williams, C. Matesich (2017). New cosmogenic and VML dates and revised emplacement history of the Ice Springs Volcanic Field in the Black Rock Desert, Utah. GSA Abstracts with Programs 49(6), doi: 10.1130/abs/2017AM-306786.