Sunday 17 November 2013

Monday 28 October 2013

Sunday 20 October 2013

MEERKAT: MONGOOSE

The meerkat or suricate is a small mongoose found in southern Africa. It is characterised by a broad head, large eyes, a pointed snout, long legs, a thin tapering tail, and a brindled coat pattern. 

The head-and-body length is around 24–35 cm, and the weight is typically between 0.62 and 0.97 kg. 

Wednesday 11 September 2013

Tuesday 3 September 2013

Sunday 1 September 2013

Saturday 13 July 2013

Tuesday 9 July 2013

Monday 8 July 2013

ELASMOSAURS: GRIT & GASTROLITHS

Elasmosaurs swam the seas for over 130 million years, feeding on the plentiful fish and shellfish. They used grit and gastroliths in their large stomachs to break down their seafood diet.

Gastroliths – round, polished stomach stones – have been found amid their bones. These stones would have been swallowed to help grind down their catch and lower their natural buoyancy. In their selection of these pebbles, elasmosaurs displayed, at times, a remarkable geological discernment.

The Puntledge elasmosaur from Courtenay, British Columbia, for example, had a yen for basalt. When the fossilized skeleton was excavated, the stones in its abdominal cavity were all basalt, an indication that this particular elasmosaur had somehow learned to discriminate between basalt stones and all others.

Basalt, as any geologist will tell you, is harder (and therefore longer lasting as a grinding material) than many other rocks. Yet over time, even basalt will erode, particularly when subjected to the digestive juices of such an enormous creature. From the elasmosaur’s long neck and bulky body, paleontologists have concluded that that their fishing technique was probably a sudden snake-like strike with the head, sweeping the meal into their cage-like mouth long before the tell-tail body loomed in sight through the depths.

Swimming beneath a school of fish, they would have been hidden by their dappled camouflage, allowing them to swing their toothy mouths up into the schools and capture hapless fish to be swallowed whole. Less stealth was probably required to hunt ammonites – free-swimming shellfish that jetted along like armoured squid. During the Jurassic, ammonites, distant relatives of the chambered nautilus, populated the seas.

The ammonites’ heavy protection would have meant that their backward-looking view of the world was no problem when dealing with most predators, but the marine reptiles of the day were a fatal exception to the rule. Ammonite fossils with clear teeth marks have been found, putting both elasmosaurs and mosasaurs at the scene of the crime and solving murder mysteries millions of years old.

Tuesday 2 July 2013

Friday 28 June 2013

Sunday 26 May 2013

SUNTOK FAMILY FINDS TWO NEW SPECIES AT SOOKE

Steve Suntok made a big discovery off the coast of Vancouver Island near Sooke in 2013. Suntok's daughter, Leah, displays the 25-million-year-old bird fossil, (only the second of its kind ever discovered in the area) at the Royal BC Museum Friday. The family is donating the find to the RBCM's palaeontology collection. 

Then again in 2020, new fossil fish 


Saturday 25 May 2013

Thursday 9 May 2013

STAWAMUS CHIEF: SQUAMISH RISING


Eagles, bears and breathtakingly beautiful scenery await those who travel north of Vancouver, British Columbia to the town of Squamish.

I had the great pleasure of meeting one of those travelers last evening while enjoying a stunning sunset dinner at the Boathouse on Kitsilano Beach -- Barbara Samways, a delightfully interesting woman and wonderful conversationist out exploring the West Coast via tour and rail.

British by descent, Barbara has traveled the world. living in what was once Rhodesia, now Zimbabwe, and finally settling down in the isolated beauty that is Perth. We talked of the world's great beauties and a shared love of travel with friends and family. Canada is new to her and a geologic playground that I love to call home.

While we lack the turquoise waters and kaleidoscope of colorful fish that warmer waters offer, I wax poetic about our deep blue Pacific, mountain peaks, rich geologic and interesting early history -- all of the things that captivate me and I hope she'll enjoy. I'm looking forward to meeting up with her after her three-week sojourn to hear what sights from our young country delighted her, viewed from a fresh set of eyes.

Situated at the head of Howe Sound and surrounded by mountains, Squamish is cradled in natural beauty as only a West Coast community can be. Growing in fame as the Outdoor Recreation Capital of Canada, visitors will discover the abundance of attractions, activities and opportunities to explore in this wilderness community.

Before Europeans came to the Squamish Valley, the area was inhabited by the Squohomish tribes. These Indians lived in North Vancouver and came to the Squamish Valley to hunt and fish. The first contact the Indians had with the white man was in 1792, when Captain George Vancouver came to Squamish to trade near the residential area of Brackendale.

During the 1850s gold miners came in search of gold and an easier gold route to the Interior. Settlers began arriving in the area in 1889, with the majority of them being farmers relocating to the Squamish Valley. The first school was built in 1893 and the first hotel opened in 1902, on the old dock in Squamish.

Squamish means Mother of the Wind in Coast Salish, which is testimony to the winds that rise from the north before noon and blow steadily until dusk, making Squamish a top wind surfing destination, and host to the annual PRO-AM sailboard races.

The Stawamus Chief, the second largest freestanding piece of granite in the world, has made Squamish one of the top rock climbing destinations in North America. This magestic peak is said to have been one of the last areas of dry ground during a time of tremendous flooding in the Squamish area.

Many cultures have a flood myth in their oral history and the Coast Salish people of Squamish are no exception. They tell of a time when all the world save the highest peaks were submerged and only one of their nation survived. Warned in a vision, a warrior of the Squamish nation escaped to safety atop Mount Chuckigh (Mount Garibaldi) as the waters rose.

After the flood, a magestic eagle came to him with a gift of salmon to tell him that the world below was again hospitable and ready for his return. He climbed down the mountain and returned to find his village covered by a layer of silt.

All his people had perished, but the gods gave him another gift, a second survivor of the flood, a beautiful woman who became his wife. For their gift of generosity they had shown, the couple took the eagle as their chief totem and have honored it through generations of Coast Salish people.

Monday 29 April 2013

Tuesday 2 April 2013

MOUNTAINS, WATER & SKY: CARIBOO COUNTRY


The Bowron Canoe Circuit is a 149,207 hectare geologic wonderland, where a fortuitous combination of plate tectonics and glacial erosion have carved an unusual 116 kilometre near-continuous rectangular circuit of lakes, streams and rivers bound on all sides by snowcapped mountains. From all descriptions, something like heaven.

The east and south sides of the route are bound by the imposing white peaks of the Cariboo Mountains, the northern boundary of the Interior wet belt, rising up across the Rocky Mountain Trench, and the Isaac Formation, the oldest of seven formations that make up the Cariboo Group (Struik, 1988). Some 270 million years ago, had one wanted to buy waterfront property in what is now British Columbia, you’d be looking somewhere between Prince George and the Alberta border. The rest of the province had yet to arrive but would be made up of over twenty major terranes from around the Pacific.

The rock that would eventually become the Cariboo Mountains and form the lakes and valleys of Bowron was far out in the Pacific Ocean, down near the equator.

With tectonic shifting, these rocks drifted north-eastward, riding their continental plate, until they collided with and joined the Cordillera in what is now British Columbia. Continued pressure and volcanic activity helped create the tremendous slopes of the Cariboo Range we see today with repeated bouts of glaciation during the Pleistocene carving their final shape.

Wednesday 13 March 2013

Thursday 28 February 2013

MERKLE

Monday 11 February 2013

Tuesday 5 February 2013

Monday 28 January 2013

MAGNOLIA TOOTHPASTE

A traditional Chinese extract from the bark of the magnolia tree, an ancient genus that goes back some 95-million years, gives you fresh breath by killing off the nasty oral microbes that cause halitosis.

My favorite individual tree is the magnolia growing on the grounds at Balboa Park. It is a magnificent example of the family Magnoliaceae and takes up nearly a whole city block. Older magnolia have this elegant quality of long draping branches, perfect for avoiding a predator while enjoying an afternoon's snooze.

Given that our ancestors decended from the trees, pre Lucy now it seems, and that we've seen bits of magnolia bark in firepits from 10,000 to 80,000 years ago, we may have enjoyed Magnoliaceae as a comfortable perch, hearth and perhaps even some additional oral benefits -- magnolia toothpaste anyone?

Tuesday 1 January 2013

Monday 31 December 2012

AMON OF KARNAK

A great temple to the god Amon was built at Karnak in Upper Egypt around c. 1785. It is from Amon that we get his cephalopod namesake, the ammonites and also the name origin for the compound ammonia or NH3. Ammonites were a group of hugely successful aquatic molluscs that looked like the still extant Nautilus, a coiled shellfish that lives off the southern coast of Asia.

While the Nautilus lived on, ammonites graced our waters from around 400 million years ago until the end of the Cretaceous, 65 million years.

Varying in size from millimeters to meters across, ammonites are prized as both works of art and index fossils helping us date rock. The ammonites were cousins in the Class Cephalopoda, meaning "head-footed," closely related to modern squid, cuttlefish and octopus. Cephalopods have a complex eye structure and swim rapidly.

Ammonites used these evolutionary benefits to their advantage, making them successful marine predators. I shared some ammonites with my wee paleontologist cousins this weekend, Maddison and Malena. They were impressed with the amazing range of species and body styles. Their favorites were the ones from Alberta and England with their original mother of pearl still intact.

Ammonites cruised our ancient oceans expertly capturing prey with their tentacles. We danced around the deck pretending to be predators from ancient seas. Picture a hungry fellow at a smorgasbord with just a dash of crazy. Now add water.

Thursday 20 December 2012

OKANAGAN HIGHLANDS

Plant fossils from the Okanagan highlands, an area centred in the Interior of British Columbia, provide important clues to an ancient climate.

While the area is referred to as the Okanagan, the term is used in a slightly misleading fashion to describe an arc of Eocene lakebed sites that extend from Smithers in the north, down to the fossil site of Republic Washington. The grouping includes the fossil sites of Driftwood Canyon, Quilchena, Allenby, Tranquille, McAbee, Princeton and Republic.

These fossil sites range in time from Early to Middle Eocene, and the fossil they contain give us a snapshot of what was happening in this part of the world because of the varied plant fossils they contain.

While the area around the Interior of British Columbia was affected. McAbee was not as warm as some of the other Middle Eocene sites, a fact inferred by what we see and what is conspicuously missing. In looking at the plant species, it has been suggested that the area of McAbee had a more temperate climate, slightly cooler and wetter than other Eocene sites to the south at Princeton, British Columbia and Republic and Chuckanut, Washington. Missing are the tropical Sabal (palm), seen at Princeton and the impressive Ensete (banana) and Zamiaceae (cycad) found at Republic and Chuckanut, Washington.

Friday 14 December 2012

Thursday 13 December 2012

Thursday 8 November 2012

Saturday 20 October 2012

COLOURS OF AUTUMN: VANCOUVER

Autumn is a wonderful time to explore Vancouver. It is a riot of yellow, orange and green. The fallen debris you crunch through send up wafts of earthy smells that whisper of decomposition, the journey from leaf to soil.

It is a wonderful time to be out and about. I do love the mountain trails but must confess to loving our cultivated gardens for their colour and variety. 

We have some lovely native plants and trees and more than a few exotics at Vancouver's arboreal trifecta — Van Dusen, Queen E Park and UBC Botanical Gardens. One of those exotics, at least exotic to me, is the lovely conifer you see here is Metasequoia glyptostroboides — the dawn redwood. 

Of this long lineage, this is the sole surviving species in the genus Metasequoia and one of three species of conifers known as redwoods. Metasequoia are the smaller cousins of the mighty Giant Sequoia, the most massive trees on Earth. 

As a group, the redwoods are impressive trees and very long-lived. The President, an ancient Giant Sequoia, Sequoiadendron giganteum, and granddaddy to them all has lived for more than 3,200 years. While this tree is named The President, a worthy name, it doesn't really cover the magnitude of this giant by half.   

This tree was a wee seedling making its way in the soils of the Sierra Nevada mountains of California before we invented writing. It had reached full height before any of the Seven Wonders of the Ancient World, those remarkable constructions of classical antiquity, were even an inkling of our budding human achievements. And it has outlasted them all save the Great Pyramid of Giza, the oldest and last of those seven still standing, though the tree has faired better. Giza still stands but the majority of the limestone façade is long gone.

Aside from their good looks (which can really only get you so far), they are resistant to fire and insects through a combined effort of bark over a foot thick, a high tannin content and minimal resin, a genius of evolutionary design. 

While individual Metasequoia live a long time, as a genus they have lived far longer. 

Like Phoenix from the Ashes, the Cretaceous (K-Pg) extinction event that wiped out the dinosaurs, ammonites and more than seventy-five percent of all species on the planet was their curtain call. The void left by that devastation saw the birth of this genus — and they have not changed all that much in the 65 million years since. Modern Metasequoia glyptostroboides looks pretty much identical to their late Cretaceous brethren.

Dawn Redwood Cones with scales paired in opposite rows
They are remarkably similar to and sometimes mistaken for Sequoia at first glance but are easily distinguishable if you look at their size (an obvious visual in a mature tree) or to their needles and cones in younger specimens. 

Metasequoia has paired needles that attach opposite to each other on the compound stem. Sequoia needles are offset and attached alternately. Think of the pattern as jumping versus walking with your two feet moving forward parallel to one another. 

Metasequoia needles are paired as if you were jumping forward, one print beside the other, while Sequoia needles have the one-in-front-of-the-other pattern of walking.

The seed-bearing cones of Metasequoia have a stalk at their base and the scales are arranged in paired opposite rows which you can see quite well in the visual above. Coast redwood cone scales are arranged in a spiral and lack a stalk at their base.

Although the least tall of the redwoods, it grows to an impressive sixty meters (200 feet) in height. It is sometimes called Shui-sa, or water fir by those who live in the secluded mountainous region of China where it was rediscovered.

Fossil Metasequoia, McAbee Fossil Beds
Metasequoia fossils are known from many areas in the Northern Hemisphere and were one of my first fossil finds as a teenager. 

And folk love naming them. More than twenty fossil species have been named over time —  some even identified as the genus Sequoia in error — but for all their collective efforts to beef up this genus there are just three species: Metasequoia foxii, Metasequoia milleri, and Metasequoia occidentalis.

During the Paleocene and Eocene, extensive forests of Metasequoia thrived as far north as Strathcona Fiord on Ellesmere Island and sites on Axel Heiberg Island in Canada's far north around 80° N latitude.

We find lovely examples of Metasequoia occidentalis in the Eocene outcrops at McAbee near Cache Creek, British Columbia, Canada. I shared a photo here of one of those specimens. Once this piece dries out a bit, I will take a dental pick to it to reveal some of the teaser fossils peeking out.

The McAbee Fossil Beds are known for their incredible abundance, diversity and quality of fossils including lovely plant, insect and fish species that lived in an old lake bed setting. While the Metasequoia and other fossils found here are 52-53 million years old, the genus is much older. It is quite remarkable that both their fossil and extant lineage were discovered in just a few years of one another. 

Metasequoia was first described as a new genus from a fossil specimen found in 1939 and published by Japanese paleobotanist Shigeru Miki in 1941. Remarkably, the living version of this new genus was discovered later that same year. 

Professor Zhan Wang, an official from the Bureau of Forest Research was recovering from malaria at an old school chum's home in central China. His friend told him of a stand of trees discovered in the winter of 1941 by Chinese botanist Toh Gan (干铎). The trees were not far away from where they were staying and Gan's winter visit meant he did not collect any specimen as the trees had lost their leaves. 

The locals called the trees Shui-sa, or water fir. As trees go, they were reportedly quite impressive with some growing as much as sixty feet tall. Wang was excited by the possibility of finding a new species and asked his friend to describe the trees and their needles in detail. Emboldened by the tale, Wang set off through the remote mountains to search for his mysterious trees and found them deep in the heart of  Modaoxi (磨刀溪; now renamed Moudao (谋道), in Lichuan County, in the central China province of Hubei. He found the trees and was able to collect living specimens but initially thought they were from Glyptostrobus pensilis (水松). 

A few years later, Wang showed the trees to botanist Wan-Chun Cheng and learned that these were not the leaves of s Glyptostrobus pensilis (水松 ) but belonged to a new species. 

While the find was exciting, it was overshadowed by China's ongoing conflict with the Japanese that was continuing to escalate. With war at hand, Wang's research funding and science focus needed to be set aside for another two years as he fled the bombing of Beijing. 

When you live in a world without war on home soil it is easy to forget the realities for those who grew up in it. 

Zhan Wang and his family lived to witness the 1931 invasion of Manchuria, then the 1937 clash between Chinese and Japanese troops at the Marco Polo Bridge, just outside Beijing. 

That clash sparked an all-out war that would grow in ferocity to become World War II. 

Within a year, the Chinese military situation was dire. Most of eastern China lay in Japanese hands: Shanghai, Nanjing, Beijing, Wuhan. As the Japanese advanced, they left a devastated population in their path where atrocity after atrocity was the norm. Many outside observers assumed that China could not hold out, and the most likely scenario was a Japanese victory over China.

Yet the Chinese hung on, and after the horrors of Pearl Harbor, the war became genuinely global. The western Allies and China were now united in their war against Japan, a conflict that would finally end on September 2, 1945, after Allied naval forces blockaded Japan and subjected the island nation to intensive bombing, including the utter devastation that was the Enola Gay's atomic payload over Hiroshima. 

With World War II behind them, the Chinese researchers were able to re-focus their energies on the sciences. Sadly, Wang was not able to join them. Instead, two of his colleagues, Wan Chun Cheng and Hu Hsen Hsu, the director of Fan Memorial Institute of Biology would continue the work. Wan-Chun Cheng sent specimens to Hu Hsen Hsu and upon examination realised they were the living version of the trees Miki had published upon in 1941. 

Hu and Cheng published a paper describing a new living species of Metasequoia in May 1948 in the Bulletin of Fan Memorial Institute of Biology.

That same year, Arnold Arboretum of Harvard University sent an expedition to collect seeds and, soon after, seedling trees were distributed to various universities and arboreta worldwide. 

Today, Metasequoia grow around the globe. When I see them, I think of Wang and all he went through. He survived the conflict and went on to teach other bright, young minds about the bountiful flora in China. I think of Wan Chun Cheng collaborating with Hu Hsen Hsu in a time of war and of Hu keeping up to date on scientific research, even published works from colleagues from countries with whom his country was at war. Deep in my belly, I ache for the huge cost to science, research and all the species impacted on the planet from our human conflicts. Each year in April, I plant more Metasequoia to celebrate Earth Day and all that means for every living thing on this big blue orb.  

References: 

  • https://web.stanford.edu/group/humbioresearch/cgi-bin/wordpress/?p=297
  • https://humboldtredwoods.org/redwoods

Friday 12 October 2012

Mary Ebbetts, Asnaq

Mary Ebbetts was born Asnaq of the Raven/Yéil phratry of the Gigalgam Kyinanuk Tlingit of Tongas and Larhtorh/Larhsail of Cape Fox. 

She was the daughter of Chief Nenkoot aka Ebbets (1790-1880) and his wife, Aanseet (Chief of All Women) (1800-1870)

Keishíshk' Shakes IV and his wife, S’eitlin — a Deisheetaan (Gaanax.ádi) from Aan goon (Angoon), and granddaughter to the Head-Chief of Wrangell. 

Anislaga married Robert Hunt of the Hudson's Bay Company at Fort Simpson at Lax-Kw'alaams on the Nass River while staying with the Tsimshian. 

Saturday 6 October 2012

Friday 5 October 2012

DIATRYMA: EOCENE FLIGHTLESS BIRD

Rare bird, reptile and mammal tracks have been immortalized in the outcrops of the Chuckanut Formation. We found these tracks from a Diatryma high up on a slope a few field seasons ago. George Mustoe from the University of Washington did some latex peels then flew them out to be studied.

These massive flightless birds reached up to 9 feet in height and made a living in the grasslands and swamps of the Eocene. The largest of the prints you see here measures 11 inches wide and 12 inches high. Truly a big bird!

Tuesday 2 October 2012

Thursday 27 September 2012

EGYPTIAN OWL: INDURATED LIMESTONE


QUEEN NEFERTITI: EGYPTIAN ALABASTER

While at the Metropolitan Museum of Art this week in New York, I was struck by the beauty of many of their pieces. A sculptured jar that stopped me dead in my tracks was the striking face representing one of the royal women of Amarna. 

Her hairstyle of overlapping curls, known as the Nubian wig, was popular among the female members of Akhenten's family. The hole at the centre of her forehead once secured the separately carved upper body of a rearing cobra whose tail is visible across the top of the wig. This royal protector was exclusively worn by kings and queens.


A beautifully rendered Egyptian alabaster (calcite); obsidian, steatite Canopic Jar from Thebes, Valley of the Kings, Dynasty 18, reign of Akhenaten, ca. 1353-1336 B.C. Since its discovery in 1907, the face has been identified as that of Queen Tiye, Akhenaten's mother, Queen Nefertiti.

Tuesday 25 September 2012

JURASSIC BOUNTY: AMMONITE

Those working in the Jurassic exposures on Vancouver Island are a determined crew. Most of the sedimentary deposits of the Jurassic are exposed in the hard to reach areas between Nootka Sound and Cape Scott.

By the time these ammonites were being buried in sediment, Wrangellia, the predominately volcanic terrane that now forms Vancouver Island and the Queen Charlotte Islands, had made its way to the northern mid-laditudes.

This detail of the Jurassic ammonite, Paltechioceras sp. shot with an ultra-low f-stop, is from an all but inaccessible site in Sayward, Bonanza Group, Vancouver Island.

Monday 3 September 2012

Saturday 1 September 2012

BLOSSOMS: ALLIUM TANGUTICUM


PALEAOCENE-EOCENE THERMAL MAXIMUM

In 2004, a scientific crew braced the cold and the odds to extract a sediment core from 400m below the seabed of the Arctic Ocean. The core showed that Fifty-five million years ago, deep in the Eocene, the North Pole was ice-free and enjoying tropical temperatures. It also told us that the temperature of the ocean was 20C, instead of the coolish –1.5C we see today… a truth that is hard to imagine with all the hype around global warming.

The bottom end of that core helped explain the fossils found at Eocene sites around British Columbia, species commonly seen in more tropical environments today.

The warmer temperatures seen at McAbee and around the globe were recorded in the core sample and reveal evidence for a global event known at the Palaeocene-Eocene Thermal Maximum. Back in the Eocene, a gigantic emission of greenhouse gases was released into the atmosphere and the global temperature warmed by about 5C.

While the bookends of the geologic time scale slide back and forth a wee bit, the current experts in the geologic community set the limits to be 33.9 +_ 0.1 to 55.8 +_ 0.2 million years ago. The fossil record tells us that this part of British Columbia and much of the Earth was significantly warmer around that time, so warm in fact that we find temperate and tropical plant fossils in areas that now sport plants that prefer much colder climes, or as is the case in the Arctic, snow and ice.

The Okanagan Highlands is an area centred in the Interior of British Columbia, but the term is used in a slightly misleading fashion to describe an arc of Eocene lakebed sites that extend from Smithers in the north, down to the fossil site of Republic Washington. The grouping includes the fossil sites of Driftwood Canyon, Quilchena, Allenby, Tranquille, McAbee, Princeton and Republic.

These fossil sites range in time from Early to Middle Eocene, and the fossil they contain give us a snapshot of what was happening in this part of the world because of the varied plant fossils they contain.

While the area around the Interior of British Columbia was affected. McAbee was not as warm as some of the other Middle Eocene sites, a fact inferred by what we see and what is conspicuously missing. In looking at the plant species, it has been suggested that the area of McAbee had a more temperate climate, slightly cooler and wetter than other Eocene sites to the south at Princeton, British Columbia and Republic and Chuckanut, Washington. Missing are the tropical Sabal (palm), seen at Princeton and the impressive Ensete (banana) and Zamiaceae (cycad) found at Republic and Chuckanut, Washington.

While we are the likely culprits of much of the warming of the Arctic today, natural processes operating in the not too distant past have also resulted in significant temperature fluxuations on a world-wide scale.

Friday 31 August 2012

Tuesday 21 August 2012

Thursday 16 August 2012

Tuesday 17 July 2012

Sunday 8 July 2012

Saturday 7 July 2012