Eye on I

2011-12-29T21:15:00.001-05:00

reduced latest laser data

2011-12-22T18:32:00.000-05:00

laser VT, ICE, PAV olivines

2011-12-19T15:41:00.000-05:00

meet at brown about TZ

2011-12-17T15:40:00.001-05:00

laser pav ice vt ol

2011-12-16T10:03:00.001-05:00

AMNH talk

2011-12-02T11:12:00.000-05:00

re-ran marianas samples on icpms (this was third run, second run done by LB)

2011-11-30T20:41:00.000-05:00

http://umanitoba.ca/geoscience/faculty/arc/rocks.html

definitions and explanations.

2011-11-17T15:13:00.000-05:00

ran marianas samples on icpms

clean lab

2011-10-28T10:40:00.000-04:00

prep marianas lavas for icp ms

group seminar talk on SCVF GCVF

2011-10-19T10:41:00.000-04:00

2011-10-14T15:39:00.000-04:00

clean bottle 6N HNO3

open house

2011-10-01T08:01:00.000-04:00

volc.

2011-09-30T15:40:00.000-04:00

amnh mi, ol, W. US

LAB inst in Portland, OR

2011-09-19T12:38:00.000-04:00

icp ms

2011-09-02T21:48:00.001-04:00

2011-09-01T21:48:00.000-04:00

iceland

EMP @ AMNH

2011-08-29T08:00:00.000-04:00

mis and ols

2011-08-04T07:40:00.000-04:00

EMP @ AMNH on mis, ol, pyx. mostly unsuccessful.

2011-07-22T18:08:00.000-04:00

submit abstract for LAB workshop

solutions on ICP MS @LDEO

2011-07-19T18:06:00.001-04:00

and print crystals (GIANT) poster for competition

clean lab digesting rocks

2011-07-14T10:58:00.000-04:00

just like it was done in 1988

CO, WY, ID, MT grad student trip

2011-07-04T11:51:00.000-04:00

June 24 - July 4

CIW to upload/print all data

2011-06-20T11:51:00.000-04:00

Carnegie SIMS

2011-06-14T11:49:00.000-04:00

June 10 -14
MIs and Oak cpx

2011-05-15T21:05:00.000-04:00

still hunting and exposing MIs

2011-05-11T21:05:00.000-04:00

CAMP and YS HS

2011-05-05T21:08:00.000-04:00

laser pavant 1 and ice springs 1

2011-05-02T21:06:00.000-04:00

geochron lab

lab

2011-04-13T21:45:00.000-04:00

polishing and finding MIs

river lab solid earth

2011-04-11T21:45:00.000-04:00

emp @AMNH

2011-04-07T21:44:00.000-04:00

Don at LDEO

2011-03-31T07:45:00.000-04:00

Solid Earth to Newark Superbasin

2011-03-26T07:45:00.000-04:00

masters

2011-03-24T07:44:00.000-04:00

D" hot topics

2011-03-18T07:43:00.000-04:00

min quiz/ign quiz, meta/sed lab

2011-02-28T12:08:00.000-05:00

powered w/ ball mill

2011-02-22T12:10:00.001-05:00

MO 10 07A Pisgah
MO 10 16 v16
MO 10 27a v03
AZ09uk09a cpc
AZ09uk31b akc
AZ09uk02 vt
UT09DV04 dv

learned to use ball mill
hunt for SiO2 sand

ign lab, min quiz

2011-02-21T12:10:00.000-05:00

FTIR Arenal

2011-02-17T14:03:00.000-05:00

masters paper due

2011-02-15T14:02:00.000-05:00

2011-02-15T12:14:00.000-05:00

learning matlab

ign lab

2011-02-14T12:10:00.000-05:00

2011-02-09T14:46:00.000-05:00

crushed 3 samples (and 2 that weren't cleaned).

2011-01-31T09:02:00.001-05:00

new semseter, FTIR session (Arenal cpx), wash and crush CIMA samples for WR

2011-01-16T09:02:00.000-05:00

vacation

2011-01-06T09:01:00.000-05:00

Semail Ophiolie, Oman

break

2010-12-31T09:22:00.000-05:00

boston/blizzard-Pato/Vero-Montreal

finals and paper writing

2010-12-05T09:22:00.000-05:00

LA ICP MS

2010-11-10T09:57:00.001-05:00

SC and VY ols for V values

Mount Merapi's eruptions

2010-11-08T18:43:00.000-05:00

more photos

Paricutin volcano, Mexico

2010-11-06T11:42:00.003-04:00

Eruptions At Anak Krakatau Volcano, Indonesia 1st November 2010

2010-11-02T18:00:00.004-04:00

James Reynolds filmed Spectacular Explosive Eruptions At Anak Krakatau Volcano, Indonesia Yesterday 1st November 2010

A cross section of Earth

2010-10-31T19:46:00.001-04:00

Mid Terms

2010-10-21T09:59:00.000-04:00

Recent Geology News

2010-10-13T17:55:00.001-04:00

Hungarian toxic damn break

4.3 magnitude earthquake in Oklahoma

2010-10-03T11:23:00.002-04:00

Preparing documents to laser MORB olivine and glass on Friday
lasered
intro to XANES in AMAG
column chemistry AMAG lab
chem potential
component transformation
open house Saturday

2010-09-26T12:44:00.003-04:00

making and preparing laser mounts for Friday (V and ols)
Sm -> Nd
La -> Hf
Rb -> Sr
Bulk silicate Earth
Calorimetry
Chinese harvest festival
Homework
Rangers at Devils

lab

2010-09-11T11:44:00.001-04:00

polishing, erasing melt inclusions

back to the classroom

2010-09-10T11:37:00.001-04:00

C.G. - math review, differential equations
C.G. - thermodynamics intro, zeroth law (no perpetual motion), 1/2 law (if you squish something it gets small)

I.G, intro to standard eqn w/ 87Rb->87Sr
87Sr = 87Sr(intial) + 87Sr * (e^(lt)-1)
86Sr = 86Sr(intial) + 86Sr * e^(-lt)

used to determine age of solar system and last geologic activity on Mars

I.C. resonance, Lewis structures, bond angles, electronegativity, electron affinity

LA ICP MS

2010-08-19T07:14:00.000-04:00

Zapping Cima olivines and Uinkaret melt inclusions.

RF SONNE

2010-07-30T12:18:00.003-04:00

My floating home in the Pacific for two weeks off the coast of Coasta Rica and Nicaragua. Looking at pillow basalts and volcanoclastics from seamounts.

manhattan center for science and mathematics

2010-06-26T11:28:00.001-04:00

Costa Rica

2010-06-20T13:51:00.004-04:00

meeting here

2010-05-21T22:59:00.000-04:00

red blobs, blue blobs, low velocity anomaly, high velocity anomaly, water, degree of melting, pressure, temperature

FTIR at AMNH

2010-05-20T22:54:00.001-04:00

Final Exams are not my favorite thing to do

2010-05-11T22:38:00.000-04:00

Thermodynamics
Petrology

EMP at AMNH

2010-04-16T22:31:00.001-04:00

Ash plume from Eyjafjallajokull Volcano, Iceland

2010-04-14T22:26:00.000-04:00

South West Field Work

2010-04-11T22:23:00.001-04:00

This is my office on a good day.

Cima Field Area

2010-03-31T10:34:00.007-04:00

View Cima Field Area in a larger map

2010-03-18T20:11:00.001-04:00

SIMS at DTM in DC

2010-02-22T20:03:00.000-05:00

making an indium mount

2010-02-03T15:00:00.002-05:00

Magnetite (spinel specie)

2010-01-19T20:15:00.003-05:00

The spinel species magnetite (Fe3O4) is found in a huge range of different rock types. The equilibrium between quartz, olivine, and magnetite is used as a reference to specify a commonly-occuring oxygen pressure typical of rocks formed near the Earth's surface. In addition, magnetites in many igneous and metamorphic rocks are titaniferous (containing ulvospinel, Fe2TiO4, in solid solution). Titaniferous magnetites coexisting with ilmenite solid solution are sensitive to both temperature and redox conditions (oxygen fugacity), and in favorable conditions the compositions of both phases can indicate the temperature at which they formed.

from: Mineralogy and Optical Mineralogy (2008) Dyar, M. and Gunther, M.; Mineralogical Society of America.

Spinel

2010-01-19T20:08:00.003-05:00

Spinel (MgAl2O4) At about 400 km, the olivine structure is no longer stable. It changes spontaneously from the olivine structure to a spinel-type structure, which takes up 8% less space; the composition remains the same (though we now call it beta-Mg2SiO4). This causes seismic discontinuity at about 300-400 km depth that is the boundary tranistion zone.

from: Mineralogy and Optical Mineralogy (2008) Dyar, M. and Gunther, M.; Mineralogical Society of America.

Hematite

2010-01-19T18:30:00.003-05:00

Hematite(Fe2O3) is a common member of the corundum group and is usually found in sedimentary of metamorphosed sedimentary rocks. When present in metamorphic or igneous rocks, it is indicative of highly oxidizing conditions. The red color of hematite is very intense because the Fe(+3)O6 octahedra are somewhat asymmetric, intensifying the bands in the hematite spectrum.

from: Mineralogy and Optical Mineralogy (2008) Dyar, M. and Gunther, M.; Mineralogical Society of America.

Ilmenite

2010-01-19T18:20:00.004-05:00

Ilmenite (FeTiO3) is extremely common in both igneous and metamorphic rocks, where it's presence often serves as a signature of high activity of TiO2 saturation and/or relatively reducing conditions. Ilmenite typically contains some magnetite (Fe2O3) in solid solution and in favorable conditions can help indicate both temperature and redox conditions under which it formed.

Ilmenite is antiferromagnetic.

from: Mineralogy and Optical Mineralogy (2008) Dyar, M. and Gunther, M.; Mineralogical Society of America.

Fundamental minerals of Igneous Petrology

2010-01-19T17:38:00.003-05:00

This list of minerals is organized by ascending number of Oxygens.

Iron Oxides (3)
ilmenite FeTiO3
hematite Fe2O3 <-----> Fe6O9

Spinel (4)
spinel MgAl2O4
hercynite FeAl2O4 note: hercynite is relate to magnetite
chromite MgCr2O4
Ferritchromite FeCr2O4

magnetite Fe3O4 <-----> Fe608
ulvospinel Fe2TiO4

Olivine (4)
fosterite Mg2SiO4
fayalite Fe2SiO4

Pyroxene (6)
enstatite Mg2Si2O6 opx
ferrosilite Fe2Si2O6 opx
diopside CaMgSi2O6 cpx
hedenbergite CaFeSi2O6 cpx
Wollastinite Ca2Si2O6 cpx note: pyroxenoid

jadite NaAlSi2O6 note: high pressure, composition btwn Ab & Np
MgAl2SiO6

Feldspar (8)
Plagioclase
anorthite CaAl2Si2O8
albite NaAlSi3O8

Potassium Felspar
albite NaAlSi3O8
orthoclase KAlSi3O8

Mica (10) + (OH)
TRICK: remember from talc compositition
talc Mg3Si4O10(OH)

biotite KMg3AlSi3O10(OH)
phengite KMgAl2Si3O10(OH)
annite KFe3AlSi3O10(OH)

muscovite KAl3Si3O10(OH)

Garnet (12)
pyrope Mg3Al2Si3O12
almandine Fe3Al2Si3O12
grossular Ca3Al2Si3O12

grossularite Ca3AlFeSi3O12

Amphiboles (22) + 2(OH)
tremolite-actinolite Ca2Mg5Si8O22(OH)2
cummingtonite Mg7Si8O22(OH)2

edenite NaCa2Mg5Si7AlO22(OH)2 hornblende
tschermakite Ca2Mg3Al2Si6Al2O22(OH)2 hornblende
pargasite NaCa2Mg4AlSi7Al2O22(OH)2 hornblende

glaucophane Na2Mg3Al2Si8O22(OH)2

LA-ICPMS at LDEO

2010-01-08T20:05:00.000-05:00

Math Help

2009-12-23T16:41:00.002-05:00

For all your algebra, Calculus I, Calculus II, Calculus III, Linear Algebra, and Differential Equations needs.

Mineralogy Resources

2009-12-23T16:37:00.004-05:00

Webmineral
Mindat
American Mineralogist Crystal Structure Database

Hi-Quartz Low-Quartz

2009-12-09T09:07:00.003-05:00

The Silica Phase Diagram

Bob Down's Group

Liquid Oxygen

2009-11-22T16:57:00.001-05:00

Geology of New York and New Jersey

2009-11-10T20:51:00.001-05:00

Girls Science Day at Columbia

2009-11-07T18:48:00.000-05:00

Cat Scratch Sand Dunes on Titan

2009-11-04T15:51:00.005-05:00

image source: nasaimages.org

Sterling Hill Mining Museum

2009-11-03T20:42:00.002-05:00

On the way to the mine we saw a classic fold.

Northern Manhattan Island

2009-11-02T16:11:00.002-05:00

Image credit: USGS

New York City Bedrock

2009-10-11T22:39:00.003-04:00

Image credit: http://www.geo.sunysb.edu

Double Discovery Center

2009-10-10T18:42:00.000-04:00

Science at Work

2009-09-26T07:37:00.004-04:00

I wanted a few photos of me in action, to illustrate the more exciting part of the academic part of my daily life. A friend of mine took some pictures, but this isn't quite what I was hoping for:

This is perhaps the most accurate. Over the summer I spent quite a bit of time behind this microscope.

This instrument resides on the other half of the lab. I'm not sure what it does, beside look impressive.

This is a nice chunk of Earth's mantle and me caught off guard.