EGU Blogs

Yukon

Geology Photo of the Week #15 – Dec 9-15

The 15th photo of the week is of an area of natural acid rock drainage (ARD) in Eagle Plains, Yukon. ARD is a phenomenon that most people associate with mine tailings and mine waste. However, it occurs naturally as well since the only criteria that need to be met are a source of oxidized water, such as rain, rocks or minerals that have a high sulphur content, and a very little carbonate in the rocks. Once you have these three things ARD is very possible, and it occurs naturally all over the world. As you can see at this site the ARD is pretty much killing everything in its path. This is no surprise since the water in the area is about pH 1 or 2 and most things cannot survive such a hostile environment.

That said, a lot of research is going into looking at what an survive in such hostile places and how this might relate to extra-terrestrial life.

The Eagle Plains ARD site. (Photo: Matt Herod)

Dr. Lacelle installing some peepers at the Eagle Plains ARD site. (Photo: Matt Herod)

Thanks for reading!

Matt

Geology Photo of the Week #8 – Oct 14-20 – Guessing Game!

This weeks photo is a giant bone! I leave it to you to surmise which creature it belongs to….I hope you accept the challenge. Please post your guesses in the comment section below. If no one gets it within the first few hours I’ll start posting hints about the creature. You can click on the photo to enlarge it. Have fun!

Hint 1: This bone was discovered in the Yukon Territory and is housed at the Yukon Archaeological and Palaeontological Survey, which is where I took the photo. Their facility houses all of the bones found in the Yukon as well as all of the archaeological artefacts.

Well, the mystery has been solved.  Congrats to everyone who provided the answer on Twitter as well.

The answer that you have all been waiting for is Wooly Mammoth (Mammuthus primigenius). Yep, this is a bone from a mammoth and it is all of a metre long!! Absolutely massive!

Here are some other pictures of mammoth remains that I snagged from the collection and the local museum.

A complete and gorgeous mammoth skeleton at the Beringia Centre in Whitehorse.

A tusk at the survey.

A newly discovered tusk that just arrived at the survey and had yet to be catalogued.

 Cheers,

Matt

Robert Service – A geologist’s poet

There are strange things done in the midnight sun

By the men who moil for gold;

The Arctic trails have their secret tales

That would make your blood run cold;

The Northern Lights have seen queer sights,

But the queerest they ever did see

Was that night on the marge of Lake Lebarge

I cremated Sam McGee.

My submission for the Accretionary Wedge #51, which I am also hosting, is about my favourite poet of all time: Robert Service. Robert Service was born on January 16, 1874 in Preston, England. He immigrated to Canada at the age of 21 and after working odd jobs for a while throughout British Columbia and California he landed a job as a banker with the Canadian Bank of Commerce who, in 1904, sent Service to their Whitehorse branch. Although already a published poet, it was in Whitehorse that he established himself as one of the premier poets of his day. It was from this point on that Robert Service became the voice of the Klondike Gold Rush and hereafter known as the “Bard of the Yukon”. In 1908 he relocated to Dawson City, which was the heart of the gold rush and still booming even though most of the claiming had been done earlier in the decade. Indeed, in 1908 Dawson claims produced 174,000 ounces of gold (they still produce around 50,000 ounces/year).

The Bank of British North America and the infamous Downtown Hotel (lots of fun to be had in there!) in Dawson City. (Photo: Matt Herod)

Robert Service lived in Dawson until 1912, writing poetry full time in his cabin, which is preserved by Parks Canada as a historic site…like the rest of Dawson. He then moved to Europe during the war years and passed away in 1958.

Robert Service’s cabin (Photo: Matt Herod)

The ballads and poems of Robert Service are my all time favourites. As someone who has been to the Yukon several times they resonate quite strongly for this reason alone. However, even before I was lucky enough to travel there I still loved them. They speak to me on several levels. Firstly, as a fan of Canadian history they invoke the feeling of the gold rush, an important time in Canada, far more effectively than any story or non-fiction ever has. They also speak to me as a geologist. These days gold rushes are more like staking wars between junior mining companies than individual races by men from across Canada and the world to a far flung and wild place. They certainly do not bear any resemblance to the old methods of prospecting, staking or mining gold and poems such as these bring those old days back to life. As modern geologists it would not do to forget our heritage. Today we use sophisticated geochemical and geophysical methods to find gold and it is easy to forget about the blood, sweat and tears of the early Klondikers and the only way to appreciate what we take for granted today is to learn about what the old methods were. The poems of Robert Service bring those days to life in my mind and enhance my appreciation for the evolution of gold prospecting and mining throughout the past 100 years.

For this wedge I also encouraged people to write their own poetry and so I figured that as the host I had better put my money where my mouth is. I am taking a course in glacial sedimentology this semester and TA’ing Quaternary geology so I have glaciers on the brain a little bit right now, which is not altogether a bad thing. I hope you enjoy my poem.

Beautiful flowing stream of ice;

blue, grey, brown and white;

squeezing the land in a powerful vice;

with enormous might;

blanketing the nations in a cold embrace;

creeping forward, toward your toe;

scraping the land at your base;

shaping it like a colossal fresco

receding, advancing, apparently still

yet always in motion, inexorably flowing

Striations, rat-tails, whale-backs, till

Eroding, depositing, always sculpting

Recording chemistry for untold millenia

helium, carbon, oxygen, hydrogen

revealing past climate data

cracking, calving into the salty ocean

Glacier, you are a mighty power

Coming and going throughout Earth’s past

flowing like a mountainous white tower

when is the next ice age forecast?

If you want to listen to some real poetry now that you’ve read mine I recommend the recital of The Cremation of Sam Magee below by the amazing Johnny Cash. I was pretty stoked to find a recital of this great poem by such a fantastic musician as well. It is kind of an awesome double although he does say “toil” instead of “moil”, but it is a minor mistake and doesn’t really matter.

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Thanks for reading and remember, the deadline for AW#51 is coming up on November 1 so get your submissions in!!

Matt