1 / 16

Materials Sense:

our goal is to develop our physical intuition for Earth Materials. Materials Sense:. Integrating Earth Materials into a Deep Earth Curriculum. Materials of the Deep Earth. Integrating Earth Interiors into Mineral Sciences Curricula. Three most abundant elements in the Earth.

rodriguezrobert
Download Presentation

Materials Sense:

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. our goal is to develop our physical intuition for Earth Materials Materials Sense: Integrating Earth Materials into a Deep Earth Curriculum

  2. Materials of the Deep Earth Integrating Earth Interiors into Mineral Sciences Curricula

  3. Three most abundant elements in the Earth

  4. Elements of The Earth stellar spectra reveal composition Indirect evidence: Solar Spectra Meteorites Hand samples Experiments Each set of lines is a “fingerprint” for each element

  5. Atomic-scale structure governs the physical and chemical behavior of rocks and minerals case 1: Single-size spheres

  6. Iron in the Earth’s Core? Anisotropy? cubic close pack body center cubic www.ldeo.columbia.edu/~richards/Jefflec.html

  7. Atomic-scale structure governs the physical and chemical behavior of rocks and minerals case 2: Two-different size spheres: O and Si

  8. pressure 0 25 GPa O Si coordination tetrahedral (SiO4) octahedral (SiO6)

  9. Mantle Mineralogical Model

  10. Basic Units • Definition SI Unit Example • distance meter m Prof. Kavner • time seconds Heartbeat • mass kilogram kg Laptop • density Kg/m3 or g/cm3 1 water, 3 rock 8 iron Students should know definitions, units, and examples from daily life and Earth

  11. Derived Units acceleration (a) m/s2 10 Earth’s gravity force (F) N, Kg*m/s2 fall of small object pressure (F/area) PaEarth pressure (GPa) energy Joulesmechanical, heat, etc. power Watt, J/smechanical, heat, etc.

  12. Energy and constitutive properties Conjugate Variables Equilibrium Properties Transport Properties (energy units) Stress-Strain Elastic Constants (GPa) Viscosity (Poise, Pa s) Pressure-Volume Bulk Modulus (GPa) Elastic wavespeeds (m/s) Temperature-Entropy Heat Capacity (Joule/mol/K) Thermal Conductivity (W/m/K) Chemical potential-moles* Phase diagram Chemical Diffusion (m2/sec) Electric field-current Electrical conductivity (ohms) Isotropic vs. Anisotropic

  13. Which mineral will have anisotropic physical properties?

  14. Deep Earth Toy Model Purpose: To gain physical intuition for properties of deep Earth materials Goal: Calculate density and wavespeeds as a function of pressure for variety of deep Earth minerals, and compare with PREM Abilities: Can map compositional changes and temperature variations onto seismic observables (wave velocity variations)

  15. Mantle Mineralogical Model

  16. Deep Earth Toy Model (Excel)

More Related