kareina: (BSE garnet)
As some of you are aware, my posting here to LJ is no where near as frequent since moving to Sweden as it had been while living in Tasmania, and Italy, where a much higher percentage of my leisure time was spent on-line. However, LJ has been no where near as neglected as my geology blog, which I hadn't posted in since February. However, last week's field trip was so inspiring that I have been moved to write a post about my new favourite rock type. I also posted these pictures to FaceBook, but I did so in the Metamorphic Army group page, so if you aren't a member there (and most of those reading this won't be), you wouldn't have seen them. It will be interesting to see if the inspiration continues and I actually start posting there regularly again.
kareina: (stitched)
I have been aware of the existence of "spider" diagrams to display the concentration of Rare Earth Elements (REE) within a rock sample since I was an undergrad. However, I have never really used them because A) my data from my previous research projects didn't include that sort of data, and B) I didn't really understand how to "normalize" the data in order to create the diagrams.

However, for my current research project it turns out that I do have REE data for most of my samples. I hadn't really thought about that fact yet, but today, when putting together an outline for a paper based on my research, inspired by a paper I recently read by some people who are doing a very similar project to mine, looking at geochemical data in 3D, but for a VERY different type of ore deposit. In their paper they used spider diagrams to look at their REE data and drew some conclusions as to how the REEs differ based on different patterns of alteration in their rocks. This inspired me to look at my own REE data.

Therefore I spent the day playing with it. That part about "don't know how to normalize the data" is no longer an issue, because my favorite program for plotting geochemical data knows how to do that, and does it automatically. (Have I mentioned recently how much I love this program--there is nothing like using a tool that was developed to do EXACTLY what I want to do, by people who need to do the exact same things with it?)

When doing these sorts of diagrams one organizes the data into groups, and all of the samples in one group contribute to a single line on the diagram. One possible way to group them is by rock type. Another is by concentration of one (or more) ingredient within the rock (oxides or elements). Because I have no idea which ones would be the best I decided to take a systematic approach, and, after playing with it all day, I now have a pdf of some 60 different diagrams, each one focusing on grouping the samples by the concentration of a single ingredient. I also have a spreadsheet summarizing the results--for some of them the resultant patterns are smooth regular curves, for others they are more of a saw-tooth shaped. For some of them the pattern is smooth for the groups with not much of that ingredient, but saw tooth for the group with the highest concentration of that ingredient. For others it is the exact opposite--saw toothed for the low concentrations, smooth for high.

It was a fun, and reasonably productive day at work, followed by a nice, reasonably productive evening. We bought some second hand scythe blades (because some of what is growing in the field will be easier dealt with by hand with them, than trying to use the ride on mower we got second hand from his brother), we managed to stack half of what was left of the pile of wood in the yard--one more session should see that done, which is good, because it will be nice to have it gone for the midsummer SCA event we are hosting here, and I made time to play hammer dulcimer, too. I have nearly worked out the one tune I never quite learned on the nyckleharpa--I can play most of it, but there is a couple of spots that call for a very quick sequence of four notes, and which four notes it is changes from one spot to the next, and I never quite managed to memorize that bit, and I do not yet have any other option for playing other than memorizing what I should do.

But tonight I think I managed to finally learn them on the dulcimer. hopefully I can find the time to try it again tomorrow and see if it stuck, and, perhaps, even check the nyckleharpa and see if learning the sequences on the hammer dulcimer translates to also being able to push the correct keys on the nyckleharpa.

Oh--yes, I nearly forgot--yesterday's adventure. The department had a "meeting", which, in this case, is to say, a boat trip to the local archipelago. The archipelago of the northern Swedish coastline is, our guide (the park ranger for this area) told us, unlike any other in the world. It consists of islands made of sand and rounded stones which are growing rather quickly, as this part of the world continues to rise in rebound after the glacier melted. The sand and stones (ranging from gravel to boulders in size, with more on the small end than on the large), was all deposited here by the glacier, and gradually pushed southwards as the glaciers advanced. As a result the Bothnian bay is kind of shallow, and shallowest in the area where these deposits were thickest. One might wonder why these islands exist at all, if they are built from loose sand, gravel, and rocks--wouldn't storms and the resultant waves wash them away?

Nope-the storms are from the south, which is the direction the glaciers pushed the sand in the first place, so there is more of it out there, and during the storms the waves push the sand and rocks back to the north, and each storm builds the islands up, just that little bit. Add to that the rebound, and the islands are growing noticeably. Our guide says that the island he brought us to has grown 18 centimeters taller in the 21 years since he first started going there. What does this mean in terms of how it looks? Well, the old fishing village, which was very active there from the late 1800's to the early 1900's, has a cluster of houses all facing what was once the harbour. They houses are all offset from one another, because it was forbidden to build your house somewhere where it could block another man's view of his boat from his house. Today there is a wide, grassy field with a bit of forest where that old harbour was, and there is a much newer harbour, built by manual labour by folk who would have otherwise been unemployed during the 1930's.

Yes, I did take some photos, and there remains a chance that I might yet upload some to share, if anyone actually wants me to (e.g. the links aren't good enough), but not tonight--tonight I need to do yoga and get to bed. This is a short work week, and I have lots to do...
kareina: (Default)
What have I been up to?

Today was an SCA demo at a Scout Camp. The entire camp has a Medieval theme, so we fit right in. Some of the leaders of the Scout group have participated with Frostheim before, and they really appreciated the fact that we could come out. We had the whole afternoon available, so the plan had been to do perhaps half an hour of intro, then a good 40 minutes each of dancing, fencing, and heavy fighting. I liked that plan as I would have time to change out of dancing clothes and into armour while the fencers played. However, plans don't always go according to schedule. My first clue was the morning phone call from the guy who organized the day--he couldn't make it, he needed to take his kid to the doc (it turns out to be Scarlet Fever), but he assured me that the local Count and Countess would still be coming. My first thought was "great--that was our one native Swedish speaker", since my Swedish is still poor, and he comes from England and she is from Finland. However, despite not being a native Swedish speaker, she is fluent in Swedish.

Therefore she did the intro talk, and then I started the kids dancing. We had time to do a farandole and I started to teach them the Maltese Bransle before the rain started. Since it was a decently heavy rain we decided to take a break, and the kids scattered to various places under cover. We stood on the porch for a bit, chatting with some of the Scout leaders, and then decided that since it didn't look like it was going to stop raining anytime soon, perhaps we could move the dancing into the hall. It was a bit crowded, but by having an inner and an outer ring for the bransle we were able to make us all fit. We did several more dances before switching to showing the kids the armour and talking about what we do.

With the organizer of the demo out that left only one person who could have done fencing, so we skipped that part, and instead the knight did a talk (in English, translated by one of the Scout leaders, which I appreciated, as it helped reinforce my slowly growing vocabulary) about fighting, passed around his armour to look at, and then put it on and let me hit him a bit. We decided not to fight in the rain--not only is it not so pleasant for the audience, slippery grass increases the odds of injury, especially for knees and ankles. The room's ceiling was far too low to consider actual combat inside, so we didn't bother to put me in armour at all. After showing them the basic blows the rain stopped, so he took the kids outside and let them take turns hitting him. Everyone seemed to enjoy the day.

This week's two biggest work accomplishments have been filling in paperwork to apply for a visa to visit Russia and resubmitting a paper. The visa paperwork took a while. They wanted to know every country I have visited in the last decade (I opted to list only the most recent visit to countries I have visited more than once), every university I have attended, and all civil, professional, and/or charitable organizations I have ever been a member of. These questions did not exist on the form for my collegues, who have Swedish passports. It was because I am using an Australian passport that I had the extra questions. I am curious as to if I would have had even more questions had I used my US passport, but not curious enough as to actually try it.

Resubmitting the paper was nice and easy. Both reviewers suggested that it be accepted, with minor revisions, and I was able to do most of the revisions on my own (I am extremely grateful for the reviewer who took the time to go through the text and highlight typos--no matter what I typed the first time, rocks are not "wildly" distributed across Tasmania!). There were only four points which I felt necessary to consult with my PhD supervisor, so I emailed him straight away, and the next morning I had a reply. His reply included an offer to write a tricky paragraph if I wanted. My first impulse was to say "yes, please", but then I realized that given the time change and the fact that he would be asleep by the time I saw his message, I had plenty of time to try to write that bit myself and then ask him what he thinks--he would still be free to write it himself if my version didn't make him happy. So I did, and he approved, so I submitted the paper in less than 50 hours from first seeing the letter from the editor giving me the reviewer's comments. With luck the editor will be happy, and I am finally well and truly done with my PhD project, and it (or, rather, a short, sweet, distillation from it) will soon be published.

Last week, and the first part of this week, we had a house guest, which was much fun. She joined me for yoga daily, and we got out and practiced silly people tricks. She didn't make it this far north all that often, but I will still miss her when she moves to France to start her PhD.

Speaking of house guests, we have done some major preparation for my mother's visit next month. Mom won't be able to sleep on a mattress on the floor when she is here, so we have created a space in the office to set up the massage table (legs lowered to the lowest setting) to give her a bed. In order to do this it was necessary to take the project off of the big floor loom which had dominated the office floor and take the loom apart. In order to have someplace to store the loom bits it was necessary to block off the corner of the room that lead to our walk-in closet. However that meant we needed to move the furniture in the hallway which had been blocking off the other entrance to that closet. It took all evening, but we managed to do the moving, and now we have many of the boxes and set of drawers that had been in the hallway stacked (in a very different configuration) in the corner of the office, and the hallway is much emptier, with only the treadle sewing machine and a single chest of drawers (upon which now sits the electric keyboard) flanking the newly unburied door to the closet.

I know that other people think I am mad for it, but that that was a truly fun evening. I really do love rearranging furniture, finding a new, improved, place for everything, and cleaning underneath and behind stuff in the process.

In other news, summer has progressed to the state of fireweed being in flower--a very pretty time of the year, but, to my mind, even better because once the fireweed blooms winter can't be so very far off, and winter is even prettier.

Next week I need to make more progress with my data (see last week's entry for how that is going) in hopes of having something to say when I start to put together a talk about my research for the upcoming departmental "kick off" retreat. We should also hear if our visa is approved, and if all of the ore deposit folk in our department are heading to Russia to see some of the geology of the Kola Peninsula the following week.

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