Siyao (Mark) Yu

Mark Yu

Ph.D. Student 

Rutgers University
Department of Earth and Planetary Sciences
Geological Sciences Lab Rm. 233E
610 Taylor Road
Piscataway, NJ 08854-8066 U.S.A.

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Research Interests

  • Paleoceanography/Paleoclimatology 
  • Stable Isotope Geochemistry 
  • Micropaleontology (foraminifera)
  • Stratigraphy
  • High-Temperature Experimental Geochemistry 

For my Ph.D. thesis, I am working on reconstructing the Pleistocene thermocline in the Indian Ocean using stable isotopes of foraminifera as part of IODP Expedition 359, Maldives Monsoon and Sea Level. This study aims to elucidate the hydrographic changes in the Indian Ocean with the onset of the South Asian Monsoon and changes to oxgyen minimum zones during the last 2.6 Myr. Additionally, my research involves oxygen isotope analysis of pore waters extracted from sediments collected on IODP Expedition 363 in the Western Pacific Warm Pool. This study aims to reconstruct bottom water temperatures to understand ocean circulation and heat transport. 


  • Rutgers University, NJ - (Pre-Candidacy) 2016 to present 
  • University of Rochester, NY Geological Sciences (B.S.) 2015; Biology, History, and Environmental Geology Minors
    Senior Thesis: "Methods of Apatite Synthesis and Europium Anomaly Effects Regarding Oxygen Fugacity"
    Advisor: Dustin Trail

Advisor and Dissertation Committee

  • Dr. James Wright 


Teaching Assistant (Rutgers University)

  • Fall 2016, Fall 2017 - Mineralogy (01:460:301) Dr. Claude Herzberg

  • Spring 2017 - Intro to Geochemistry (01:460:304) Dr. Mortlock, Dr. Godfrey, Dr. Turrin

Workshop Leader (University of Rochester)

  • Fall 2014 - Intro to Geological Sciences (EES 101) Dr. Penny Higgins 

Honors and Awards

  • NSF Participation Award, Stable Isotope Biogeochemistry and Ecology (IsoCamp), 2017
  • Special Study Award, Isocamp 2017
  • TA/GA Professional Development Fund Award, 2017
  • Sigma Gamma Epsilon, 2015
  • Student Course Development Project Fund, 2015
  • Discover Grant, 2014
  • 7th Generation Scholarship, 2011-2015

Meetings / Abstracts