A few brief words on sexual harassment in academia

 It appears to be sexual harassment revelations week here in the science blogosphere, so I figured I’d share a brief story.

In the year 2000, when I was a PhD student, I talked to the student counseling unit about making a formal complaint about sexual harassment by a senior member of staff.

They made it clear to me that taking this course of action would result in revocation of my student visa and deportation from Australia.

I chickened out and kept my mouth shut.

I was fortunate enough to be in a position where I was able to put my head down, write up, and finish my degree by making this choice.  Since that time, I have learned of other international students at other universities who did the right thing, and were deported for reporting. 

I tell myself that had I gone through with reporting, I would have been disappeared long before having the opportunity to make an official statement (way back before blogs, shipping someone halfway around the world was an effective way of shutting them up). And I thought that the incidents which I wished to report were not severe or well documented enough to bring to the police.  But while this is true, here I am, 13 years later, still awake at one in the morning second-guessing myself.

The recent round of revelations has focused heavily on the perpetrators of sexual harassment. Which is good.  But reporting wrongdoing is much more difficult than it should be, due to  the institutional coercion that universities use to protect their reputations at the expense of their students.

Not much going on here

I realize that for the last few years, this blog has been sputtering along with a low level of volume and quality. I can offer neither explanation nor remediation at this stage.  But I have listed a few of my old favorites below, for anyone looking for straightforward explanations of how geology explains, among other things, sex, drugs, and Rock and Roll.

Phase Equilibria of Pie Crust
Thermodynamics of Hot Chicks
Cetacean Liposuction
Relativistic Obesity
Geologic Lifespan of Jon Bon Jovi
Stars get Lonely Too
Testing the Earthquake-Modesty Connection
Dear Hypothesis

Harry Connolly new series Kickstarter

In "The best book you've never read", I mentioned that Author Harry Connolly, fantastic Urban fantasy "Circle of Enemies", which was an amazing novel that hardly anyone has managed to get a hold of.  It turns out that the Author is launching his next series on Kickstarter.  The appeal finishes tomorrow, but anyone interested in getting in on this can still do so, if you read this blog post in the next 12 hours.

Jailbait zircons

As the company SHRIMP driver, I do a fair bit of demonstration analyses for potential customers.  One thing that has become increasingly common over the past two years is demonstration of the ability to successfully date jailbait zircons.  For those of you unfamiliar with the term, a jailbait zircon is a zircon so young that dating it while making all the usual assumptions will get you into all sorts of trouble. 

The chief problem is that for deep geologic time, we assume that the ²³⁸U to ²⁰⁶Pb decay is a simple process. In actuality, there are eight alpha decays and more beta decays than I can remember in this process, but most of the intermediate daughter products are short-lived relative to the age of the analyst, much less the Earth.

However, if you are dating a phase that is much, much younger than the Earth, then these intermediate decay products can become important.  Corrections need to be made relating to whether or not now-extinct intermediate species were incorporated into the target mineral more or less efficiently than uranium. 

For minerals which are a few hundred thousand years old, or younger, you can abandon the uranium-lead system entirely, and use uranium-thorium dating instead.  This simply looks at how close to secular equilibrium ²³⁰Th and ²³⁴U have grown after their initial incorporation into the target mineral in a unequilibrated ratio.  The linked wikipedia explanation is good (at least qualitatively).  Check it out.

Of course, even for targets old enough for uranium-lead dating, in addition to the theoretical problems above, there is the practical problem of measuring a statistically significant amount of very low levels of radiogenic lead, while somehow keeping common Pb contamination to an absurdly low level.  Because one of the nasty things about the disequilibrium species is that they disrupt many of the assumptions that are needed to accurately and precisely correct for common lead.  Which means that if you can’t keep the blank down, you’re screwed. 

Who actually shuts down in a shutdown

So the government has been shut down for over a week now.  What does this mean?  NASA is shut down.  If you want to learn about the International Space Station, you'll need to learn Russian. The USGS is mostly shut down, except for hazards programs that are on skeleton staffs. On the other hand, the spy agencies are operating as normal. Taxes are still being collected. And you can still register as a congressional lobbyist. So all the unpleasant aspects of government are still business as usual. I guess that's what essential means. The main people suffering are those off work, and small business owners and employees and their suppliers.  See the Riprarian Rap to see how non-federal employees get screwed because contracts and grants get delayed or cancelled.

How the shutdown plays in SE Asia

I have been flying home from Korea via SE asia the last couple of days, and reading a few local newspapers.  What is happening here is that while the US Government remains shut down, the premier and PM of China have been engaging on a major goodwill tour, offering things like a billion dollars towards a new monorail project in Indonesia, or 40 billion dollars in increased trade with Malaysia over the next four years.  In contrast, the US has cancelled the Presidents trip, sending John Kerry in his place.
The local take on this, from the Persian Gulf to Japan and everywhere in between, is that it makes America look weak and unreliable, and that it is a serious blow to the new "Asian Pivot" strategy. China's rivals are worried that this inability of America to project soft power will tip the regional balance too far in China's favor.  Whether the bickering factions in Washington are too myopic to see or too shortsighted to care is not entirely clear.

The wood between the worlds

I’m typing this blog post on the airport wifi, while sitting in a lounge chair with full AC power.  Behind me, the waterfalls of the koi pond water gently tinkles, while to my left, the butterfly garden gently sleeps in the pre-dawn darkness.  I’m in Singapore airport, the long-haul air travel version of Narnia’s wood between the worlds.  

Singapore airport is everything LAX isn’t.  Spacious, relaxing, and accommodating to visitors, be they on the ground for half an hour or half a day.  As a long-haul transfer point, they know that people will need to stop somewhere, so they try to make themselves as attractive as possible to travelers.  It works, more than 50 million people came through here last year, most bound for somewhere else.

Never complain about your stove again

Geologist have it pretty easy, in terms of lab safety.  Compared to chemists and biologists, we have to deal with a relatively low number of lethal chemicals, and our habits confirm this.  It is not coincidence the people call us rock-lickers.  But there are still some reagents which are genuinely dangerous, and command respect.

For most rock knockers, the chief among these is hydrofluoric acid, or HF.  HF is a volatile (evaporates easily) acid which is notorious for being a contact poison.  You don’t have to drink it for you to kill you, as it will diffuse through skin, and attack muscle tissue and bone inside your body.  If the muscle it attacks is your heart, then you die.  As a result, geologists are taught from a young age to observe strict safety protocols with HF: gloves, face shields, aprons, appropriate supervision and fume cupboards are all part of the drill.

But not all fluorine health effects are as dramatic.  excess fluorine consumption can often cause dental fluorinosis, a condition in which excess fluorine is deposited in the teeth, discoloring them.  In more severe cases, fluorine deposition in the bones can lead to osteofluorosis, which can cause disfigurement, deformity, and chronic pain.

One area in which osteofluorosis is distressingly common is Guizhou, China.  Over the past decade, this disease here was linked to the combustion of high Fluorine coal.  Studies showed tha the clay that was intermixed wit hthe coal was high in F, and a steady stream of recommendations has come along describing how this must be getting aerosolized in smoke ,and adhering to food, particularly corn and chilies hung up in houses to dry.

But something didn’t add up.  People were educated to wash their vegetables, to not breathe coal smoke, and still the disease persisted.  Finally, recent studies showed that the F was not adhering to the food products.  TOF SIMS showed that  it appeared inside uncut chilies, and sometimes was associated with silica- particulate matter which should not be able to penetrate food and is biologically inactive.

This was the key to a renewed investigation into the coal.  Which, as it turns out, was not just rich in fluorine, but also rich in pyrite- fools gold.  And all of a sudden, everything fell into place.

When burned, pyrite reacts exothermically with oxygen and water to form iron oxide and sulfuric acid:

2FeS₂ + 8.5O₂ + 4H₂O -> Fe₂O₃ + 4H₂SO₄.

Sulfuric acid is not great to breathe, but it doesn’t cause fluorine poisoning.  It will, however, react with fluorite (the most common fluorine mineral like this:

H₂SO₄ + CaF₂ -> CaSO₄ + 2 HF

And there is the chemical that terrifies geochemists even in controlled lab spaces, HF, being generated in the household stove. It, in turn reacts with coal ash to form the toxic gas SiF₄, which permeates plant and animal tissues and deposits silicon inside of vegetables. In short, domestic cooking stoves are generating incredibly toxic F-bearing gases inside the home. Not even your brother-in-law’s cooking is as hazardous as this.  This was the coolest talk from the session I was fortunate enough to chair this afternoon; there is a paper here.