|
John J. Y. He
何佳 (hé jiā) Assistant Professor UCLA Department of Earth, Planetary, and Space sciences johnhe (at) epss.ucla.edu |
About
I am an interdisciplinary field geologist with interests in structural geology, sedimentology, thermo/ petrochronology, and metamorphic petrology. I study the movement and transformation of matter in the lithosphere, the outermost shell of our planet. My research interests lie broadly in the field of continental tectonics. A current focus is investigating the surface response to deep lithosphere removal: including from the perspective of sedimentation, deformation, exhumation & uplift, magmatism, and geomorphology. To what extent can the surface geologic record help us understand one of the last frontiers in tectonics: dynamics at the base of the continental lithosphere? My previous work has ranged from glacial erosion associated with the birth of the planet's largest ice sheet 34 million years ago, to detrital geochronology in the Pamir plateau. I am also interested in the application of novel analytical capabilities (e.g. in-situ analyses using beta decay systems) to traditional geologic problems. Some of my projects seek to advance our ability to interpret imprecise data sets from chronometers with complex systematics (e.g. apatite U-Th/He thermochronology). I also work with geodynamic modeling to the extent that it provides useful first-order “back-of-the-envelope” answers relevant to tectonic interpretations. |
|
|
|
Recent News
July 2024: I've officially joined the faculty of the Earth, Planetary, and Space Science department at UCLA. Please feel free reach out if you are an interested graduate student or potential post-doc. See more information here.
Aug 2023: Check out our paper on "Laramide bulldozing" in Geology: https://doi.org/10.1130/G51194.1
July 2023: My newest paper with Paul Kapp is out in Nature Communications!
[https://www.nature.com/articles/s41467-023-40147-7]
Oct 2022: My paper with Pete Reiners is out in Geochronology
[https://gchron.copernicus.org/articles/4/629/2022/gchron-4-629-2022.html]
May 2022: I'll be presenting my research in Phoenix to kick off my year as the ARCS Foundation Papadopoulos Scholar in 2022-2023!
Apr 2022: Our presentation, "The Bidahochi Basin hypothesis," presented last Fall at AGU won the Tectonophysics OSPA Award.
Dec 2021: Come visit the Hyperwall sometime on Dec 14 (11:15 am, NASA booth, exhibitor hall) to see my talk presenting some of the results and visualizations from our Transantarctic Mountains apatite He paper
May 2021: Our new paper "Rapid erosion of the central Transantarctic Mountains at the Eocene-Oligocene transition: Evidence from skewed (U-Th)/He date distributions near Beardmore Glacier" is out in Earth and Planetary Science Letters. [pdf]
July 2024: I've officially joined the faculty of the Earth, Planetary, and Space Science department at UCLA. Please feel free reach out if you are an interested graduate student or potential post-doc. See more information here.
Aug 2023: Check out our paper on "Laramide bulldozing" in Geology: https://doi.org/10.1130/G51194.1
July 2023: My newest paper with Paul Kapp is out in Nature Communications!
[https://www.nature.com/articles/s41467-023-40147-7]
Oct 2022: My paper with Pete Reiners is out in Geochronology
[https://gchron.copernicus.org/articles/4/629/2022/gchron-4-629-2022.html]
May 2022: I'll be presenting my research in Phoenix to kick off my year as the ARCS Foundation Papadopoulos Scholar in 2022-2023!
Apr 2022: Our presentation, "The Bidahochi Basin hypothesis," presented last Fall at AGU won the Tectonophysics OSPA Award.
Dec 2021: Come visit the Hyperwall sometime on Dec 14 (11:15 am, NASA booth, exhibitor hall) to see my talk presenting some of the results and visualizations from our Transantarctic Mountains apatite He paper
May 2021: Our new paper "Rapid erosion of the central Transantarctic Mountains at the Eocene-Oligocene transition: Evidence from skewed (U-Th)/He date distributions near Beardmore Glacier" is out in Earth and Planetary Science Letters. [pdf]