LEVERAGING IODP SAMPLES, DATA AND EDUCATION/OUTREACH RESOURCES IN - PowerPoint PPT Presentation

LEVERAGING IODP SAMPLES, DATA AND EDUCATION/OUTREACH RESOURCES IN SUPPORT OF A COURSE-BASED UNDERGRADUATE RESEARCH EXPERIENCE (CURE): BENEFITS AND CHALLENGES Jeffrey G Ryan 1 , Antonio Luna 1 , Chris Vidito 2 , Rosemary Hickey-Vargas 2 , James MacDonald 3 , Mary Beck 4 1 School of GeosciencesUniversity of South Florida 2 Earth and Environment, Florida International University 3 Marine and Ecological Sciences, Florida Gulf Coast University 4 Valencia College

Course-based undergraduate research experiences (CURES) • Identified as a best practice to adopt in the PCAST report (2012) • Topic of an NRC Convocation: 2015 Upside: • Potential to bring undergraduate research to large numbers of students Downside: • Serious challenges re: costs and sustainability How do we make a cost-effective geoscience CURE model?

Expanding the Use of Online Remote Electron Microscopy in the Classroom to Transform Undergraduate Education NSF-TUES Program Expansion project (Type 2) • Assessing the integration of microbeam instrumentation Come try out the FCAEM into introductory and upper-level microprobe/SEM at our undergraduate booth in the Exhibit Hall! geoscience courses “CURE” implementations at Univ. South Florida and Forida Gulf Coast Univ.

USF GLY 3311C ( Mineralogy, Petrology, Geochemistry ) “CURE” model: • Piloted with NSF-CCLI support (2006); it’s ongoing (institutionalized) • “Petrology” part of the course is built around a class analytical project • Historically: study of unknowns from locations in the NC Blue Ridge, collected during an extended class field trip. Challenges: • Time and course logistics (nothing can start until after the field trip) • Students make their own thin sections • time away from other course tasks • and highly imperfect! • (but commercial takes too long … ) • Metamorphic petrology focused • (complex, messy …. )

IODP Expedition 352 (2014) Drilled sites in the Izu-Bonin forearc • Objective: recover a reference section of oldest subduction-related lavas, to understand IBM arc evolution and the origins of supra-subduction ophiolites. • (I was a Shipboard Scientist…) • Samples recovered: • Fore-arc basalts (FABs: aphyric subduction initiation tholeiites) • Boninites: Anomalous high Mg, low Ti lavas formed by hydrous melting of mantle harzburgites. • Boninites are crystal-rich with varied mineral assemblages (olivine, pyroxenes, spinels, zeolites, carbonates) • Boninites are unique compositionally and petrologically • [e.g. a good, if unusual, kind of rock to target in a petrology class]

New topic for GLY 3311C investigation, Fall 2016: mineralogy and petrology of IODP Expedition 352 boninites • 30 highly phyric Expedition 352 boninites obtained from the IODP Kochi Core Repository • These samples are available for BOTH research and educational activities w/ appropriate justification • Curators worked with me to pick out highly phyric, visibly “messy” samples for class analysis (VERY different from my research samples!) • Polished thin sections prepared of each sample • Costs paid out of course lab fees • Each student assigned a sample/section to conduct handsample/microscopic petrography • Samples to microprobe (6-8) for mineral chemistries selected by the students • {Data collected to be provided to IODP}

In-Class activities and Supports • Expedition 352 Proceedings and Preliminary Report assigned to the class as secondary texts • Both are freely available online! • Laboratory mineralogy activities re- oriented toward the minerals that students were likely to encounter: • Primary : olivine, pyroxenes, plagioclase, spinels • Secondary zeolites, carbonates, chlorite Walker et al 1979; Laboratory Stopler et al 1980 petrology activities changed to emphasize mafic igneous rocks and phase equilibria

IODP Sample and Data Resources With the samples come the compiled data from the Expedition, in the IODP repository and reports….

IODP Gulf Coast Core Repository (College Station TX) – optional class “field” trip Interested students took part in an optional “field trip” to the Gulf Coast Core repository, where they examined DSDP, ODP, and IODP cores from the Pacific and participated in demonstrations of core imaging and analysis tools …

Results so far …. U1439A� 21X1� � (boninite) � � � SiO2� � � � � TiO2� � � � � Al2O3� � � � FeO� � � � � � MgO� � � � � � MnO� � � � � � CaO� � � � � � Na2O� � � � � K2O� � � � � � NiO� � � � � � Cr2O3� P2O5 � � Total� � Enstatite� phenocrysts 57.18 0.00 0.67 7.70 32.33 0.07 1.24 0.04 0.01 0.07 0.42 99.73 56.44 0.00 1.19 8.74 31.68 0.09 1.54 0.02 0.00 0.10 0.61 100.39 56.74 0.07 1.05 8.05 32.77 0.08 1.11 0.03 0.00 0.07 0.62 100.58 56.97 0.07 1.05 7.85 33.16 0.07 1.39 0.00 0.01 0.09 0.69 101.34 56.99 0.00 1.11 7.73 33.40 0.09 1.29 0.00 0.01 0.10 0.69 101.39 Pigeonite� matrix� crystals • 28 students completed term projects focused on 55.514 0 2.095 10.561 27.896 0.114 4.271 0.052 0.001 0.077 0.307 100.888 petrography and microprobe characterization of 52.641 0.364 4.016 10.867 22.721 0.107 9.851 0.094 0.018 0.076 0.185 100.94 Spinels� (Cr-Fe-Mg-Al) boninite mineralogy … 0.12 0.133 8.397 23.62 11.125 0.176 0.06 0.049 0 0.125 58.16 101.965 • 0.308 0.019 8.622 19.334 10.539 0.161 0.036 0 0.009 0.141 60.138 99.307 Student feedback largely positive • Concerns about field trip costs (it was optional) U1442A� 49R1� (differentiated� boninite) Low� Ca� pyroxenes • Four students (so far) working on post-course 55.09 0.25 2.07 8.24 26.00 0.10 7.85 0.07 0.02 0.04 0.50 0.00 100.23 research.... 54.63 0.00 2.02 7.65 24.85 0.08 9.30 0.11 0.02 0.05 0.84 0.00 99.54 51.63 0.34 13.77 8.14 9.97 0.09 13.75 0.62 0.15 0.00 0.00 0.00 98.46 53.88 0.02 2.82 7.03 23.30 0.13 11.47 0.09 0.00 0.01 0.84 0.00 99.60 54.43 0.14 2.08 9.21 26.15 0.12 7.07 0.10 0.00 0.03 0.30 0.03 99.64 Glass� (defocused� beam) 55.95 0.48 16.24 7.36 6.17 0.07 10.18 1.22 0.26 0.00 0.03 0.00 97.96 53.90 0.12 16.31 7.13 6.22 0.07 10.32 2.14 0.24 0.00 0.00 0.06 96.49 Similar numerical outcomes to past GLY 3311C offerings U1439C 5R1, whole section image, (IODP)

Unanticipated outcome: U1439C 15R1; U1439C 25R1 Fo 85-88 olivine cores … Augite Rims (??) Mineral Chemistry Evidence for Magma Mixing in Boninites, Sites U1439 and U1442, IODP Expedition 352 J. Scholpp, B. Mack, et al, 2017 (yesterday ….) Enstatite Cores … Fo 68 olivine rims (!!)

GLY 3311C CURE comparisons …. Previous years IODP-based Curricular High P-T Metamorphic Igneous and Low T minerals; subsolidus Similar enough.. metamorphic minerals; phase equilibria igneous phase equilibria Using IODP samples and resources for class-based Logistics Field trip preparation for IODP Sample request (6 undergraduate research? 25+ students … weeks); commercial thin Similar enough.. • Promising initial outcomes! sections (4-5 weeks) • Potential for good sustainability (40+ years of Costs to students Field Trip Fee ($200+); $30 polished section (re- $40 lab fee (1 hr probe usable); $40 probe time. Cheaper! DSDP/ODP/IODP cores....) time) Field trip optional … • Worth further investigation … Science produced Some new data on S. Research-grade results on • (maybe the Tamu Massif next time?) Appalachian rocks, has boninite minerals.. Better! been used in MS theses … Student outcomes Post-course research Research findings in class Better! seeded (!!), and post-course research seeded.