Lab News

NEW PAPER PUBLISHED IN TECTONICS

THURSDAY APRIL 18, 2019

The CU TRaIL is involved in a new paper published by former M.Sc. student Camille Collett at University of Washington. This work was supported by NSF Tectonics grant EAR-1321735 to lead-PI Alison Duvall (UW), Becky Flowers, and Greg Tucker (CU).

Collett, C., Duvall, A.R., Flowers, R.M., Tucker, G.E., and Upton, P., 2019, The timing and style of oblique deformation within New Zealand’s Kaikoura Ranges and Marlborough Fault system from low-temperature thermochronology: Tectonics, 38, https://doi.org/10.1029/2018TC005268.

CONGRATULATIONS KATHY ROBINSON, M.Sc. 2019!

WEDNESDAY APRIL 17, 2019

Congratulations to CU TRaIL’er Katherine Robinson for successfully defending her M.Sc. thesis, Rutile (U-Th)/He Thermochronology on April 8th, 2019.

CONGRATULATIONS CARLTON MUELLER!

WEDNESDAY APRIL 17, 2019
20190501_131845
From left to right, Undergraduate TRaIL’ers Nicole Gonzalez and Carlton Mueller, Jim, and TRaIL M.Sc. graduate Kathy Robinson at the May 1 RMAG awards luncheon.

Congratulations to CU TRaIL undergraduate Carlton Mueller who is graduating this spring. Carlton successfully defended his honors thesis on April 8th, 2019, and has been awarded a 2019 Neal J. Harr Memorial Outstanding Student Award from the Rocky Mountain Association of Geologists.

CONGRATULATIONS FORMER UNDERGRAD COLEMAN HIETT FOR RECEIVING AN NSF GRF!

TUESDAY APRIL 16, 2019

Congratulations to former CU TRaIL undergraduate Coleman Hiett (class of 2017) who has been awarded a prestigious NSF graduate research fellowship that will support his Ph.D. studies at USU. Coleman is the second former CU TRaIL undergraduate to receive this award, the other being Ryan Stoner (class of 2016) who is a Ph.D. student at UCSB.

UROP AWARDS TO CU TRAIL UNDERGRADUATES!

MONDAY APRIL 15, 2019

Congratulations Nicole Gonzalez, Carlton Mueller, and Lane Daigle for receiving awards from the CU Undergraduate Research Opportunities Program! Nicole and Carlton are working with Jim Metcalf on the uplift and exhumation of the Ruby Mountains – East Humboldt Range – Wood Hills metamorphic core complex in NE Nevada, and  Lane Daigle is working with Ben Johnson and Becky Flowers on apatite (U-Th)/He thermochronology of the Pilbara craton.

NEW FUNDED GRANTS IN 2018 FOR THE CU TRAIL

WEDNESDAY FEBRUARY 13, 2019

NSF EAR-1759200, Tectonics, Petrology & Geochemistry, EarthScope. “Collaborative Research: AGeS2 (Awards for Geochronology Student research) Program: Democratizing access to geochronology and promoting interdisciplinary science” PI Flowers with co-PIs Ramon Arrowsmith (ASU) and Vicki McConnell (GSA) (see program here).

NSF EAR-1759200, Sedimentary Geology and Paleobiology, “Collaborative Research: Did the formation of the Great Unconformity trigger oxygenation and the Cambrian explosion?” PI Flowers with co-PI Francis Macdonald (UCSB)

CU TRAIL RESESS INTERNS IN 2017 and 2018

WEDNESDAY FEBRUARY 13, 2019

The CU TRaIL has been thrilled to continue working with RESESS summer interns, see  conference abstracts describing their research in earlier updates!

Haley May Snyder, summer 2018, with Colin Sturrock and Becky Flowers

Fatima Niazy, summer 2017, with Lon Abbott, Jim Metcalf, Becky Flowers

NEW CU TRAIL PAPERS PUBLISHED IN 2018

WEDNESDAY FEBRUARY 13, 2019

In 2018 CU TRaIL senior scientists, graduate students, and former undergraduate interns all published papers

Baughman, J.S.*, and Flowers, R.M., 2018, Deciphering a 2 Gyr-Long Thermal History From a Multichronometer (U-Th)/He Study of the Phalaborwa Carbonatite, Kaapvaal Craton, South Africa: Geochemistry Geophysics Geosystems, v. 218, p. 308–14, doi: 10.1029/2017GC007198.

Flowers, R.M., and Ehlers, T.A., 2018, Rock erodibility and the interpretation of low-temperature thermochronologic data: Earth and Planetary Science Letters, v. 482, p. 312–323, doi: 10.1016/j.epsl.2017.11.018.

Flowers, R., Arrowsmith, R., McConnell, V., Metcalf, J., Rittenour, T., and Schoene, B., 2018, The AGeS2 (Awards for Geochronology Student research 2) Program: Supporting Community Geochronology Needs and Interdisciplinary Science: GSA Today, doi: 10.1130/GSATG392GW.1.

Kelly, N.M., Flowers, R.M., Metcalf, J.R., and Mojzsis, S.J., 2018, Late accretion to the Moon recorded in zircon (U–Th)/He thermochronometry: Earth and Planetary Science Letters, v. 482, p. 222–235, doi: 10.1016/j.epsl.2017.11.009.

Powell, J.W., Schneider, D.A., Desrochers, A., Flowers, R.M., Metcalf, J.R., Gaidies, F., and Stockli, D.F., 2018, Low-temperature thermochronology of Anticosti Island_ A case study on the application of conodont (U-Th)/He thermochronology to carbonate basin analysis: Marine and Petroleum Geology, v. 96, p. 441–456, doi: 10.1016/j.marpetgeo.2018.05.018.

Weisberg, W.R.**, Metcalf, J.R., and Flowers, R.M., 2018a, Distinguishing slow cooling versus multiphase cooling and heating in zircon and apatite (U-Th)/He datasets_ The case of the McClure Mountain syenite standard: Chemical Geology, v. 485, p. 1–0, doi: 10.1016/j.chemgeo.2018.03.038.

Weisberg, W.R.**, Metcalf, J.R., and Flowers, R.M., 2018b, Response to comment on “Distinguishing slow cooling versus multiphase cooling and heating in zircon and apatite (U-Th)/He datasets_ The case of the McClure Mountain syenite standard”: Chemical Geology, v. 498, p. 153–156, doi: 10.1016/j.chemgeo.2018.07.033.

* CU TRaIL graduate student and superb young scientist

** RESESS undergraduate who worked in the CU TRaIL

CU TRAIL CONFERENCE PRESENTATIONS IN 2018

WEDNESDAY FEBRUARY 13, 2019

CU TRaIL science had a busy year at national and international conferences, here are the abstracts we presented in 2018!

resized_photo48
Becky giving an invited talk at Thermo2018 in Quedlinburg, Germany

Abbott, L.D., Flowers, R.M., Metcalf, J.R., Hiett, C.*, McCorkel, N.*, Schanock, E.*, and Gonzalez, N.*, 2018, Investigating a Bull’s-Eye of Late Miocene Exhumation in Colorado’s Elk and West Elk Mountains using (U-Th)/He Thermochronology, paper 156-12, Geological Society of America Abstracts with Programs. Vol. 50, No. 6, ISSN 0016-7592

Baughman, J.S.**, and Flowers, R.M., 2018, Substantial Proterozoic Burial and Exhumation of the Kaapvaal Craton from (U-Th)/He Thermochronology and Implications for Cratonic Stability, Poster T33C-0423, 2018 American Geophysical Union National Meeting, Washington, D.C., December 10-14.

Flowers, R.M., Baughman, J.S.**, Robinson, K.H.**, and Metcalf, J.R., 2018, Titanite and rutile (U-Th)/He thermochronology: Diffusion kinetics,radiation damage effects, and utility, Presented at the 2018 International Conference on Thermochronology, Quedlinburg, Germany, September 16-22.

Gombosi, D.J., Metcalf, J.R., and Flowers, R.M, 2018, Preliminary development of the pyrite (U-Th)/He chronometer, Presented at the 2018 International Conference on Thermochronology, Quedlinburg, Germany, September 16-22.

Harbert, S.A., Duvall, A.R., Flowers, R.M., Tucker, G.E., Upton, P., and O’Sullivan, P.O., 2018, Exhumation, Mountain Building, and Landscape Evolution across the Marlborough Fault System, South Island, New Zealand, paper 156-6, Geological Society of America Abstracts with Programs. Vol. 50, No. 6, ISSN 0016-7592

McGrew, A.J., Rodgers, A., Metcalf, J.R., Meisner, C.B., and Webb, L.E., 2018, Tracking the Escalator Ride from Mid-Crustal Depths to the Surface: New Constraints on the Pace and Episodicity of Late Eocene to Miocene Exhumation from the Southern East Humboldt Range Metamorphic Core Complex, Elko County, Nevada, paper 237-12, Geological Society of America Abstracts with Programs. Vol. 50, No. 6, ISSN 0016-7592

Metcalf, J.R., McGrew, A.J., and Bruno, C.B., 2018, Exhumation of a Metamorphic Core Complex: Apatite and zircon (U-Th)/He constraints on the timing and rate of cooling of the Ruby Mountains – East Humboldt – Wood Hills Metamorphic Core Complex, northeastern Nevada, Presented at the 2018 International Conference on Thermochronology, Quedlinburg, Germany, September 16-22.

Morriss, M.C., Schoettle-Greene, P., Duvall, A.R., and Flowers, R.M., 2018, Exhumation and Faulting in Hells Canyon, North America’s Deepest Gorge, paper 172-6, Geological Society of America Abstracts with Programs. Vol. 50, No. 6, ISSN 0016-7592

Samson, S.D., Bonich-Wissink, M., Flowers, R., Metcalf, J., and Fedo, C., 2018, Multichronometers of detrital accessory minerals – implications for provenance studies, Goldschmidt Abstracts, 2018 2218

Snyder, H.***, Sturrock, C.P.*, Flowers, R.M., and Metcalf, J.R., 2018, Cool Rocks: an Apatite (U-Th)/He Study of the Trans-Hudson Orogen’s Phanerozoic Thermal History, Poster ED13E-0789,  2018 American Geophysical Union National Meeting, Washington, D.C., December 10-14.

Sturrock, C.P.**, Flowers, R.M., Kohn, B.P., and Metcalf, J.R., Deep-time (U-Th)/He thermochronology of ahe, AFT, and zhe datasets: a transect across the Archean Superior Province of the Canadian Shield, Presented at the 2018 International Conference on Thermochronology, Quedlinburg, Germany, September 16-22.

* CU TRaIL graduate student and superb young scientist

** CU TRaIL undergraduate student and future geoscience star

*** RESESS undergraduate working in the CU TRaIL

 

NEW CU TRAIL PAPERS PUBLISHED IN 2017

WEDNESDAY FEBRUARY 13, 2019

Baughman, J.S.*, Flowers, R.M., Metcalf, J.R., and Dhansay, T., 2017, Influence of radiation damage on titanite He diffusion kinetics: Geochmica et Cosmochimica Acta, v. 205, p. 50–64, doi: 10.1016/j.gca.2017.01.049.

Johnson, J.E.*, Flowers, R.M., Baird, G.B., and Mahan, K.H., 2017, “Inverted” zircon and apatite (U–Th)/He dates from the Front Range, Colorado: High-damage zircon as a low-temperature (<50 °C) thermochronometer: Earth and Planetary Science Letters, v. 466, p. 80–90, doi: 10.1016/j.epsl.2017.03.002.

* CU TRaIL graduate student and superb young scientist

 

CU TRAIL CONFERENCE PRESENTATIONS IN 2017

WEDNESDAY FEBRUARY 13, 2019

Abbott, L.A., Flowers, R.M., Metcalf, J.R., and Falkowski, S., 2017, The Pre-Rift Exhumation History along the Arkansas River Segment of Colorado’s Rio Grande Rift, Geological Society of America, National meeting, Seattle, WA, October 2017.

Flowers, R.M., Baughman, J.S.*, Johnson, J.E.*, and Metcalf, J.R., 2017, The Exmapdning Temperature Sensitivity Range of (U-Th)/He Thermochronology from Improved Understanding of the “Big Three” (Apatite, Zircon, and Titanite): Approaches and Examples, Geological Society of America, National meeting, Seattle, WA, October 2017.

Glotzbach, C., Lang, K., Avdievitch, N., Flowers, R., Metcalf, J., and Ehlers, T., 2017, Correcting for Long-Alpha Stopping Distances in (U-Th)/He Dating, Abstract TS1.4/GM2.5 presented at the 2017 General Assembly, EGU, Vienna, Austria, 23-28 Apr.

Kelly, N.M., Marchi, S., Mojzsis, S.J., Flowers, R.M., Metcalf, J.R., and Bottke, W.F., 2017, Constraining the Thermal Conditionals of Impact Environments through Integrated Low-Temperature Thermochronometry and Numerical Modeling, Abstract P54B-09 presented at 2017 Fall Meeting, AGU, New Orleans, LA, 11-15 Dec.

Kelly, N.M., Metcalf, J.R., Flowers, R.M, and Mojzsis, S.M., 2017, New Information from Old Lunar Zircon – Integrating U-Pb and (U-Th)/He Chronometry, Geological Society of America, National meeting, Seattle, WA, October 2017.

Niazy, F.**, Abbott, L.A., Metcalf, J.R., and Flowers, R.M., 2017, Exhumation History of Colorado’s South Park Basin and its Potential Causes fro Coupling Apatite (U-Th)/He Thermochronology with Constraints from Surface Geology, Geological Society of America, National meeting, Seattle, WA, October 2017.

Sturrock, C.P.*, Flowers, R.M., Zhong, S., Metcalf, J.R., and Kohn, B.P., 2017, Linking Craton Stability and Deep Earth Processes using Thermochronology; a Case Study in the Superior Provice of the Canadian Shield, Abstract T11D-07 presented at 2017 Fall Meeting, AGU, New Orleans, LA, 11-15 Dec.

* CU TRaIL graduate student and superb young scientist

** RESESS undergraduate working in the CU TRaIL

CATCHING UP WITH LAB NEWS

 

 

FRIDAY OCTOBER 12, 2018

 

A ton has happened in the last year, and we’ll be updating this page soon with details. We’ve had Rachel Havranek successfully defend her M.Sc. thesis, Jaclyn Baughman defend her Ph.D. thesis, been involved with multiple publications and conference presentations, welcomed Kathy Robinson into the group, and installed a new ICP-MS! We will be expanding on these events soon, so check back in!
~~~~~~~~~~~~~~~~~~~~~~~~3 year unconformity~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
WELCOME NEW TRAILERS COLIN STURROCK AND RACHEL HAVRANEK!
TUESDAY, NOVEMBER 3, 2015
Welcome new CU TRaILers Colin Sturrock (BSc from UT-Austin) and Rachel Havranek (BSc from Pomona College)! Colin and Rachel are starting projects that will use (U-Th)/He thermochronology. Stay tuned to CU TRaIL news for their abstracts and papers (no pressure).
 
DAVID LIEFERT COMPLETES UNDERGRADUATE HONORS THESIS
TUESDAY, NOVEMBER 3, 2015
Congratulations to CU TRaIL Undergraduate David Liefert for successfully completing his honor’s thesis entitled Constraints on the Timing of Exhumation in the Colorado Front Range using Apatite and Zircon (U-Th)/He thermochronometry. David did fantastic work with Becky Flowers and M.Sc. student Josh Johnson examining (U-Th)/He thermochronology in the Front Range.
2015
 
figure from David Liefert's honors thesis
Figure from David’s honor’s thesis. Note the apatites and landscape photos are at different scales.
 
 
JOSH JOHNSON (M.SC. 2015)
TUESDAY, NOVEMBER 3, 2015

Congratulations to CU TRaIL graduate student Josh Johnson for successfully defending his M.Sc. thesis entitled “Inverted” zircon and apatite (U-Th)/He dates and interpretation of high-damage zircon from the Southern Rocky Mountains, Front Range, Colorado. After defending, Josh is spending some time doing geoscience outreach in a National Park before deciding what to do with his recently acquired thermochronology skills.

Josh Johnson fieldwork photo
Newly minted CU TRaIL alum Josh Johnson (M.Sc., 2015) takes field notes in Big Thompson Canyon on a field trip with Becky and Kevin Mahan in preparation for a field season. Surprisingly, Josh earned his Master’s degree despite not knowing how to make coffee.
 
 
 
ALEXIS AULT AND BECKY FLOWERS PUBLISH NEW PAPER IN EPSL
TUESDAY, NOVEMBER 3, 2015
CU TRaIL super-alum Alexis Ault, along with co-authors Becky Flowers and Sam Bowring, recently published a new paper in Earth and Planetary Science Letters detailing their work using thermochronology from cratons, in concert with geologic constraints, to investigate the long history of burial and unroofing experienced by these regions.
 
Alexis Ault ESPL paper screen shot

 

Ault, A.K., Flowers, R.M., and Bowring, S.A., 2015, Synchroneity of cratonic burial phases and gaps in the kimberlite record: Episodic magmatism or preservational bias?: Earth and Planetary Science Letters, v. 410, p. 97-104.

Abstract:

A variety of models are used to explain an apparent episodicity in kimberlite emplacement. Implicit in these models is the assumption that the preserved kimberlite record is largely complete. However, some cratons now mostly devoid of Phanerozoic cover underwent substantial Phanerozoic burial and erosion episodes that should be considered when evaluating models for global kimberlite distributions. Here we show a broad temporal coincidence between regional burial phases inferred from thermochronology and gaps in the kimberlite record in the Slave craton, Superior craton, and cratonic western Australia. A similar pattern exists in the Kaapvaal craton, although its magmatic, deposition, and erosion history differs in key ways from the other localities. One explanation for these observations is that there is a common cause of cratonic subsidence and suppression of kimberlite magmatism. Another possibility is that some apparent gaps in kimberlite magmatism are preservational artifacts. Even if kimberlites occurred during cratonic burial phases, the largest uppermost portions of the pipes would have been subsequently eroded along with the sedimentary rocks into which they were emplaced. In this model, kimberlite magmatism was more continuous than the preserved record suggests, implying that evidence for episodicity in kimberlite genesis should be carefully evaluated in light of potential preservational bias effects. Either way, the correlation between burial and kimberlite gaps suggests that cratonic surface histories are important for understanding global kimberlite patterns.that cratonic surface histories are important for understanding global kimberlite patterns.

 
 
 
NEW STANLEY ET AL. PAPER IN G-CUBED
TUESDAY, NOVEMBER 3, 2015

CU TRaIL Ph.D. candidate Jess Stanley, along with co-authors Becky Flowers and David Bell recently published her most recent work in G3, using (U-Th)/He thermochronology to understand patterns of erosion and topographic change across the southern African Plateau.

Stanley G3 paper Screen Shot 2015-11-03 at 12.07.19 PM

Stanley, J.R., Flowers, R.M., and Bell, D.R., 2015, Erosion patterns and mantle sources of topographic change   across the southern African Plateau derived from the shallow and deep records of kimberlites, Geochem. Geophys. Geosyst. v. 16, doi:10.1002/2015GC005969.

Abstract:

Flow in the sublithospheric mantle is increasingly invoked as a mechanism to explain both modern and past surface topography, but the importance of this phenomenon and its influence at different localities are debated. Southern Africa is an elevated continental shield proposed to represent dynamically supported topography. However, this region is also characterized by a complex lithospheric architecture variably affected by Cretaceous heating, thinning, and metasomatic alteration. We used apatite (U-Th)/He thermochronometry on 15 Cretaceous kimberlites from an ∼600 km long transect across the Kaapvaal Craton, combined with information from xenoliths in these pipes, to determine the plateau interior erosion history. The goal was to determine the relationships with lithospheric modification patterns and thereby better isolate the sublithospheric contribution to elevation. The results document a wave of erosion from west to east across the craton from ∼120 to <60 Ma, initially focused along paleorivers and then retreating as a scarp across the landscape. This spatially variable erosion event was associated with limited modification of the Archean cratonic lithospheric mantle as recorded by mantle xenoliths and xenocrysts, implying that dynamic buoyancy sources may be required to explain the elevations. In contrast, off-craton to the southwest, a more pronounced regional erosion phase at ∼110–90 Ma was coincident with significant modification of the Proterozoic lithospheric mantle. This relationship suggests that lithospheric processes were more important contributors to erosion and topographic change off-craton than on-craton. Together, these results suggest that lithospheric architecture can have an important control on the surface expression of mantle dynamics.

 
 
 
 
2015 WAS ANOTHER GREAT YEAR OF TRAIL SCIENCE
TUESDAY, NOVEMBER 3, 2015

CU TRaIL science was again well-represented at meetings across the country in 2015 with presentations by a whole range of TRaILers, from senior scientists to undergraduate interns. Check out the newest science, hot off the Alphachron!

Flowers, R.M., Arrowsmith, R., Metcalf, J.R., Rittenour, T., Schoene, B.S., Hole, J., Pavlis, T., Wagner, L., Whimeyer, S., and Williams, M.L., 2015, Geology, Geochronology, and EarthScope: The EarthScope AGeS program and a new idea for a 4D-Earth initiative: Invited, Fall AGU meeting, San Francisco, CA, December 2015

Stanley, J.R. and Flowers, R.M., 2015, Dating kimberlite eruption and erosion phases using perovskite, zircon, and apatite (U-Th)/He geochronology to link cratonic lithosphere evolution and surface processes: Fall AGU meeting, San Francisco, CA, December 2015.

Collett, C., Duvall, A., Flowers, R.M., Tucker, G., 2015, Exhumation history of an oblique plate boundary: Investigating Kaikoura mountain-building within the Marlborough Fault System, NE South Island, New Zealand: Fall AGU meeting, San Francisco, CA, December 2015.

Lease, R., Haeussler, P., Metcalf, J., O’Sullivan, P.O., 2015, Accelerated erosion of high-latitude glaciated terrain in Alaska since 3-4 Ma: Fall AGU meeting, San Francisco, CA, December 2015.

Baughman, J.*, Flowers, R.M., Dhansay, T., Metcalf, J.R., Stoner, R.**, 2015, Influence of radiation damage on titanite (U-Th)/He dates from the Kaapvaal craton, southern Africa: National GSA meeting, Baltimore, MD, November 2015.

Flowers, R.M., Baughman, J.S.*, Johnson, J.E.*, Landman, R.L.*, Stanley, J.R.*, Weisberg, W.R.**, and Metcalf, J.R., 2015, Expanding the temperature sensitivity range and applicability of the (U-Th)/He system: some examples: Invited, National GSA meeting, Baltimore, MD, November 2015.

Scott, B.**, Metcalf, J.R., Flowers, R.M., Koenig, A., 2015, Exploring the role of apatite chemistry on apatite (U-Th)/He dates: National GSA meeting, Baltimore, MD, November 2015.

Weisberg, W.R.**, Metcalf, J.R., Flowers, R.M., Donelick, R., 2015, Multi-mineral (U-Th)/He thermochronometry of the standard boulder and outcrops of the McClure Mountain Syenite, Wet Mountains, Colorado: National GSA meeting, Baltimore, MD, November 2015.

Bonich, M.B., Samson, S.B., Flowers, R.M., Metcalf, J.R., and Fedo, C.M., 2015, Isotopic-thermochronologic characterization of apatite as a new proxy for provenance analysis: National GSA meeting, Baltimore, MD, November 2015.

Flowers, R.M., Arrowsmith, R., Metcalf, J.R., Schoene, B.S., and Rittenour, T., 2015, The EarthScope AGeS program: A progress report: EarthScope National Meeting, Stowe, Vermont, June 2015.

Flowers, R.M., Ault, A.K.***, Zhong, S., and Bowring, S.A., 2015, Exploring relationships between kimberlite distributions, mantle dynamics, and the hypsometric history of the North American cratonic interior: Invited, Spring AGU/GAC-MAC Joint Assembly meeting, Montreal, Canada, May, 2015.

Hardie, R., Schneider, D.A., Metcalf, J.R., and Flowers, R.M., 2015, Rift flank uplift and thermal evolution of an intracratonic rift basin (eastern Canada) determined by combined apatite and zircon (U-Th)/He thermochronology: Spring AGU/GAC-MAC Joint Assembly meeting, Montreal, Canada, May, 2015.

Powell, J., Schneider, D., Flowers, R.M., Metcalf, J., and Stockli, D., 2015, A Viable Thermochronometer for Carbonate-Dominated basins? Results of Conodont (U-Th)/He Thermochronology of Anticosti Basin, Eastern Canada: Spring AGU/GAC-MAC Joint Assembly meeting, Montreal, Canada, May, 2015.

Johnson, J.E.*, Flowers, R.M., Liefert, D.L..**, 2015, Understanding our spectacular mountain landscapes: A helium thermochronology study in Rocky Mountain National Park: Rocky Mountain National Park Research Conference, Estes Park, Colorado, March 2015.

Marokane, M., Tappe, S., Baughman, J.*, Flowers, R.M., Smart, K.A., Joy, S., 2015, (U-Th)/He thermochronology of Dharwar craton kimberlites, Peninsular India: Toward a better understanding of coupled deep Earth-surface processes: Igneous Metamorphic Petrology Study Group Annual meeting, Pretoria, South Africa, January 2015.

Kelly, N.M., Mojzsis, S.J., Flowers, R.M., and Metcalf, J.R., 2015, Impact history of the inner solar system from (U-Th)/He geochronology of lunar and meteoritic zircon: Early Life Science Institute meeting, Tokyo, Japan, January 2015.

*CU TRaIL graduate student and superb young scientist

** CU TRaIL undergraduate student and future geoscience star

*** CU TRaIL alum and current fancy Geoscience Professor

**** This would be very spicy, but delicious, Thai food at Urban Thai

 
 
 
WEISBERG WINS AAPG MILITARY VETERAN SCHOLARSHIP
FRIDAY, JULY 17, 2015
2014 CU TRaIL RESESS intern Wesley Weisberg has been awarded an AAPG Military Veteran Scholarship, recognizing both his military service and his scholarship. Nice work Wes!
2015
 
 
Wes Weisberg and Aisha Morris sledge hammers photo
Wes and RESESS director Aisha Morris trying their darnedest to be intimidating.
 
2015
2015
WEISBERG WINS AAPG MILITARY VETERAN SCHOLARSHIP
FRIDAY, JULY 17, 2015
Undergraduate RESESS intern Wesley Weisberg, who worked in the TRaIL facility during the summer of 2014, has just been awarded a GSA Rocky Mountain Section Undergraduate Research Grant. These funds will be used so that Wesley can continue his work on the project and visit the TRaIL this spring. Wes’s project focuses on using (U-Th)/He thermochronology to understand the evolution of the Wet Mountains in Colorado. Congratulations Wes!
Wes Weisberg and Aisha Morris fieldwork photo
Wesley Weisberg (left) and RESESS director Aisha Morris (right) sampling syenite in the norther Wet Mountains during the summer of 2014. Actually, Wes did all of the work while lab manager Jim Metcalf sat around taking pictures and Aisha soaked up the sun.
 
 
 
 
BUSY YEAR FOR CU TRAIL SCIENCE
FRIDAY, JULY 17, 2015

2014 has been a busy year for CU TRaIL science. Becky, Jim, and all of the students have presented their research at multiple meetings. See for yourself, CU TRaIL people are bolded.

Baughman, J., Flowers, R.M., and Dhansay, T., 2014, Stability of the Kaapvaal craton from titanite (U-Th)/He thermochronology and the strong influence of radiation damage on this underutilized thermochronometer: Fall AGU meeting, San Francisco, CA, December 2014.

Johnson, J.E., Flowers, R.M., Mahan, K.H., Baird, G.B., Metcalf, J.R. 2014, Repeated intracontinental tectonism in the Colorado Front Range: Filling critical gaps in thermal histories with titanite and zircon (U-Th)/He thermochronology: National GSA meeting, Vancouver, Canada, October 2014.

Johnson, J.E., Liefert, D.L., Flowers, R.M., 2014, Understanding our spectacular mountain landscapes: A helium thermochronology study in Rocky Mountain National Park: National GSA meeting, Vancouver, Canada, October 2014.

Landman, R.L., Rosenau, N.A., and Flowers, R.M., 2014, Constraining thermal histories in marine carbonates and black shales: A pilot conodont (U-Th)/He thermochronometry study in the Illinois basin: AAPG, Houston, TX, April 2014.

Landman, R.L., Flowers, R.M., Rosenau, N., Metcalf, J., and Powell, J., 2014,

Constraining thermal histories in carbonates and marine shales: exploring the conodont AHe thermochronometer: Thermo2014, 14th International Conference on Thermochronology, Chamonix, France, September 2014.

*Stanley, J.R., Flowers, R.M., and Bell, D.A., 2014, (U-Th)/He dating of apatite and zircon constrains erosion patterns and emplacement ages of kimberlites across the Kaapvaal Craton: Thermo2014, 14th International Conference on Thermochronology, Chamonix, France, September 2014.

Weisberg, W.R., Metcalf, J.R., Flowers, R.M., 2014, Thermochronology of the McClure Mountain Syenite: Characterization of new He thermochronometers and constraints on the cooling history of the Wet Mountains, Colorado: National GSA meeting, Vancouver, Canada, October 2014.

**Weisberg, W.R., Metcalf, J.R., Flowers, R.M., 2014, Thermochronology of the McClure Mountain Syenite: Characterization of new He thermochronometers and constraints on the cooling history of the Wet Mountains, Colorado: Association of Missouri Geologists annual, meeting, September 2014.

Metcalf, J.R., Kohn, B.P., Flowers, R.M., Osadetz, K.G., Gleadow, A.J.W., 2014, Inverted apatite (U-Th)/He and fission-track dates from the Southern Canadian Shield: Evaluating the internal consistency of apatite (U-Th)/He and fission-track thermochronology datasets: Thermo2014, 14th International Conference on Thermochronology, Chamonix, France, September 2014.

Flowers, R.M., Landman, R.L., and Rosenau, N., 2014, Potential of conodont (U-Th)/He thermochronometry to resolve shallow crustal thermal histories in carbonates and shales: Invited Speaker, Fall AGU meeting, San Francisco, CA, December 2014. Session: Between a cold outcrop and a hot place: Validation of clumped isotopes and other novel geochemical proxies to shallow crustal geothermometry

Flowers, R.M. and Farley, K.A., 2014, Grand Canyon, models, and the interpretation of thermochronology data: Invited speaker,Thermo2014, 14th International Conference on Thermochronology, Chamonix, France, September 2014.

Jess Stanley won the award for the best student poster presentation for the first half of the meeting with this research.

** Wesley Weisberg won the award for the best student poster with this research.

 
 
 
 
SHORT COURSES
FRIDAY, MARCH 7, 2014

2013 saw two thermochronology short courses led by CU TRaIL personnel. In August, Becky Flowers and Jess Stanley led a 2-day course in Port Elizabeth, South Africa for African students and post-docs as part of the Africa Earth Observatory Network (AEON).

In October, Becky Flowers and Jim Metcalf led a one-day course on He thermochronology in conjunction with the 2013 GSA national meeting. In addition to talks by Becky and Jim highlighting the fundamentals of He thermochronology, the course also included a HeFTy tutorial, lab tour, and 3 invited talks by thermochronology specialists Professor Todd Ehlers (Universität Tübingen), Dr. Joe Colgan (USGS), and Dr. Desmond Patterson (ASI – UT Austin). The course was held in the Benson Earth Sciences Building at CU-Boulder, allowing participants to visit the CU TRaIL lab and see the facilities.

Both of the short courses were fantastic, and included a wide range of participants. We hope to lead more of these in the future, and have been encouraged by the feedback of the participants.

 
 

Wondering what is happening in the lab? We’ll try to keep this page updated with lab-related news. Check back!

Individual apatite crystals from a granite in eastern China, ready for packing

 

 

 

 

 

Individual apatite crystals from a granite in eastern China, ready for packing