Showing posts with label GEOLOGY. Show all posts
Showing posts with label GEOLOGY. Show all posts

Monday, May 16, 2022

I LIKE GEOLOGISTS

 There are a few things that Princess Pirate complains about because I mention them too often. Hexagons are one.  The thing is, she points them out to me now, so I know that they are growing on her too. I mean, it’s a perfect shape, the hexagon. Except for when a designer goes a little crazy and tries to make something new like an elongated hexagon, which is always a mistake. Spring flowers like trillium are another. There is, however, an obsession that we share, and that I never get complaints about. We both love rocks. 

So I was looking for some cool sites to explore that have local geological interest. Since we had plans to go this past weekend for the Tulip Festival, I looked for information about Ottawa. When I found this website about Ottawa Gatineau Geoheritage Day, I was very excited. It was exactly what I was looking for. It had a map, and pictures of what we would see. 

One picture that particularly caught my interest was a familiar phenomenon that I had seen at McGill’s Redpath museum when it was open (pre-COVID). Unfortunately, we did miss the Geoheritage day, packed with tours, as it had already passed a couple weeks earlier. I did, however, identify where the formation of fossilized stromatolites (only two living Cyanobacteria reefs still exist - the Bahamas and Australia) were just off the Champlain bridge, and hoped to visit with my friend. In the end, she was game, and it was just the excuse we both needed for a wander around the streets and along the river on the Quebec side. 

I had noticed that, on three occasions, rocks described on the website were in “plane sight”. I wrote a comment (my inner editor could do no less) that I thought they may be mistaking the homonym for in “plain” site, and I was please to get an immediate answer back. It was even more gratifying that the mistakes were corrected within hours, accompanied by a hilarious email apologizing for the mistake because they did not have a pilot’s license! (Full disclosure, there is a term in geology that can be used with the word plane and not refer to aviation, but in this case I was right!)

Besides giving us places to go, I found that there was a book for sale that reminded me a geologic tour that  Princess Pirate and I loved in downtown Montreal from the Redpath museum. In this case, it was based in Ottawa, and advertised for $20, which seemed a reasonable amount for a risk of possible poor quality or disinterest. I reached out to Dr. Quentin Gall by email, and with a few back and forths, we agreed to meet just beside the Tulipfest.

I suppose I should have been more specific than deciding tomeet at a busy corner of his choosing without even exchanging phone numbers. We didn’t know who the other was, but he did say he was coming by bike, and there was a biker was wearing a very red obvious red shirt that passed the intersection twice while we walking nearer.  Encyclopedia strikes again! 

Quentin was charming, and full of enthusiasm for why I was looking for his book, and what I thought of the website.  He came with change (and wouldn’t keep a tip). The book was sponsored, so what I paid for two copies was a bargain for the work that was put into it! 

He asked me if I was a scientist, and I didn’t know quite how to answer. Not really, was the first thing that came to mind, quickly followed by the thought that, yes, I kind of am. It was the first time in a long time that when I admitted that I was a physician that the conversation didn’t change. He was a doctor too, and that was that, which was lovely.

The book was of such excellent quality, and arranged in small areas perfect for walking tours. He clearly could talk for hours about the rocks in the buildings listed in the book, but he was clear that he also provided the architectural context that I am more used to recognizing as a real bonus to my joy. The book also has an extensive intro to all the terms I need to know and some excellent charts in the back that have already given me a great deal of data that I have enjoyed, sitting at a table reading it. I cannot wait until I can walk around on a nice day and use it for reference. I should be able to make some educational guesses in Montreal with the glossary until I get back to Ottawa later this summer (for Hamilton!)

I’ll also have to return to the Champlain bridge late summer when the water table is low enough to see the fossilized stromatolites, and I think that will not have to twist my friend’s arm to come with me on a geological architectural walking tour next time I can come to town. She might even check it out before I make it back!

So, for now, I have in my calendar to look for Jane’s Walk next May, and look for more geological and heritage events in future.

Here’s another lead for another day. In this case, June 4, 2022. Alas, this year I am working. Most of them are Toronto and beyond, but there is one in Ottawa, in case that’s where you are in  3 weeks time!

Ontario has a heritage site for buildings and an open door day to visit.

Monday, May 21, 2018

PEAK SPRING ON A BIZARRE ISLAND

Trillium grandiflorum (Trillia grandiflora?)

Morel mushroom look-a-like off the trail

Jack-in-the-pulpit

Local Trenton 470 million year old limestone on the beach with brachiopods 

Peace

Tigers and whale sharks and brachiopods and mussels (a microcosm in a grain of sand, echos of nature)

Purple Trillium

Hybrid pink

Mutations of 4 petals (that must be lucky) and more

Perfect for a pair of mallard ducks
Princess Pirate and I went for a long walk in one of our favourite parks. The main highlight of a boardwalk over a marsh filled with creatures has been closed the last two years, but we took a chance to walk the loop that was left and wandered a short route by the beach, where our geology lessons expanded. Turns out, spring flowers flourish for such a short season because they whither once the leaves of a forest grow, and last Saturday was one of the last days. It was a wonderful way to spend an afternoon.

Thursday, May 17, 2018

FIBONACCI FAIL

My lone tulip that survived being eaten by squirrels - 3-6-6!

One of my favourite sequences that turned up in my daughter's elementary school math has a name, Fibonacci, as it approximates the golden ratio ( two quantities whose ratio is the same as the sum to the larger of the two), , and the more I learned about its application, the more I love it. It starts with 0, then 1, and then it adds the two previous numbers to get the next. It looks like this:

0 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 1587 2584 4181 6765 10946 17711 28657 46368

 I was thinking about this coming back from a fossil tour downtown, where we saw gastropod (snail) and sunflower coral fossils. I wanted to find more patterns. I immediately turned to my solitary precious blooming tulip (squirrels love to take a bite, knocking them to the ground on biting off their head), and was disappointed to find no such sequence! Here are a few inspiration patterns from a worthwhile kid-friendly Mother's Day talk from the very special McGill Redpath Natural History Museum.

There are many examples to find, though, even if tulips seem to buck the rule. Spiral galaxies and hurricane winds viewed by satellite, pine cones, artichokes, and pineapples, tree branches and leaves on branches, sunflowers and uncurling ferns, nautilus and snail shells, and even red cabbage in cross section are all beautiful exams in nature. If you want a simple cypher, or are stopping to smell the flowers, or searching a building stone wall for samples, look for a Fibonacci sequence near you!

Sunflower coral in Tyndall limestone at Le Chateau Apartments
on Sherbrooke street


Maclurite snail shells in Trenton limestone edging the Mount Royal Club from 285 million years ago