Dr. Jill Banfield

Professor

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Biography

Jill F. Banfield is a Professor in the Department of Earth and Planetary Science at the University of California, Berkeley. Her primary research interests lie in the fields of geomicrobiology and environmental microbiology, focusing on how microorganisms influence and shape natural environments. Her research group employs cultivation-independent approaches, such as metagenomics and community proteomics, to study microbial communities. They explore the microbial dissolution and precipitation of minerals, their properties, and their reactivity, particularly concerning nanoparticles formed by microorganisms. Banfield's work also examines microbial ecology and evolution, with current field projects taking place at various sites including Iron Mountain and Angelo Reserve in Northern California, as well as Rifle East River in Colorado and Crystal Geyser in Utah. Her research interests encompass mineralogy, environmental geochemistry, and nanogeoscience, emphasizing the development of bioinformatics methods to investigate microbial diversity using DNA sequencing and geochemical data, as well as analyzing the impacts of organisms on their environments.

Research Interests

Requirements for University of California, Berkeley

Doctorate Program
Requirements
GPA Requirement
Required:3
GRE Subject
Overall Score
Required:500
Overall
Required:500
TOEFL
Total
Required:90
IELTS
Overall
Required:7
Prerequisites
Bachelor's degree or recognized equivalent Preparation comparable to undergraduate major at Berkeley in Mathematics or Applied Mathematics 2 full years lower-division work (Calculus, Linear Algebra, Differential Equations, Multivariable Calculus) 8 one-semester upper-division courses (Real Analysis, Complex Analysis, Abstract Algebra, Linear Algebra)
Application Checklist
  • Graduate Application
  • Statement of Purpose
  • Personal History Statement
  • Three Letters of Recommendation
  • Unofficial Transcripts
  • C.V./Resume
  • Course and Textbook List
Specialization Notes

The Mathematics Subject GRE is required for the Fall 2026 admissions cycle. General GRE is optional.