Fort Stražnik, Orjen, Montenegro |
Wednesday, 29 August 2018
Tuesday, 28 August 2018
AMMONITES AS INDEX FOSSILS
We find ammonite fossils (and plenty of them) in sedimentary rock from all over the world. In some cases, we find rock beds where we can see evidence of a new species that evolved, lived and died out in such a short time span that we can walk through time, following the course of evolution using ammonites as a window into the past.
For this reason, they make excellent index fossils. An index fossil is a species that allows us to link a particular rock formation, layered in time with a particular species or genus found there. Generally, deeper is older, so we use the sedimentary layers rock to match up to specific geologic time periods, rather the way we use tree-rings to date trees.
Monday, 27 August 2018
Friday, 24 August 2018
Saturday, 11 August 2018
Sunday, 5 August 2018
ORCINUS ORCA
Tuesday, 31 July 2018
Monday, 30 July 2018
Sunday, 29 July 2018
Saturday, 28 July 2018
Thursday, 26 July 2018
Sunday, 15 July 2018
Saturday, 14 July 2018
GLACIAL FJORD: SEA TO SKY
A short 90-minute drive north of the city of Vancouver, the nation's gateway to the Pacific, is a recreational Shangri-La that attracts four season adventurers from around the globe to ski, board, hike, mountain bike, kayak and climb the local peaks.
It also attracts professional photographers, and weekend warriors, eager to capture the lively footprint of the village or the perfect stillness in nature. This Saturday, it was the destination of one of my new colleagues, Richard, armed with a camera in his pocket to shoot the scenes that took his fancy. A keen thesis editor and some unpredictable rain dampened those plans.
The North Shore mountains, Grouse, Cypress and Seymour, provide easy access for the happy winter adventurer and a beautiful backdrop to the young city of Vancouver -- Canada's third-largest metropolis, year-round.
They also bring us some of the rainiest, snowiest, coldest and windiest climates in Canada. Combined with the westerly winds off of the Pacific, those lovely peaks make for a panoply of weather extremes on any given day.
Certainly, not as cold as in recent past. And not as warm as millions of years ago. Ice cores tell tales of the ebb and flow of temperatures in this part of the world. Rock cores and sedimentary deposits tell other tales.
While the city sits on relatively young sandstone and mudstone, the North Shore Mountains are made of granite that formed deep within the Earth more than 100 million years ago. There are Cretaceous outcrops of sedimentary rock just off Taylor Way at Brother's Creek that reveals familiar fossilized plant material. Species common in the Cretaceous and still extant today.
This treasure trove wilderness playground stretches along the breathtaking Sea-to-Sky Highway affording breathtaking views of the Pacific as it follows the coastline of Howe Sound, a glacially carved fiord which extends from Horseshoe Bay (20 km northwest of Vancouver), past Lions Bay to the hamlet of Squamish.
It is a short jaunt further north that takes you into picturesque Whistler Valley.
Carved from the granitic mountainside high above Howe Sound, this scenic pathway, blasted into the rock of the steep glacial-valley slope, has been a rich recreation corridor and traditional First Nation hunting ground.
The ground you move over has seen oceans rise and fall, glaciers advance and retreat, the arrival of early explorers, the miners of the Gold Rush and now the rush of tourism.
Monday, 9 July 2018
OLYMPIC PENINSULA FOSSIL FIELD TRIP
This stretch of coastline is home to the Clallam Formation, a thick, mainly marine sequence of sandstones and siltstones that line the northwestern margin of western Washington. These beachfront exposures offer plentiful fossils for those keen to make the trek.
The beautifully preserved clams, scallops and gastropods found here are mostly shallow-water marine from the late Eocene to Miocene. Time, tide and weather permitting, a site well worth visiting is the south flank of a syncline at Slip Point, near Clallam Bay. Head to the most Northwestern tip of the lower 48, visiting Cape Flattery on the Makah Reservation located 75 miles NW of PA on Hwy 112. Cape Flattery is located approx 7 miles from Neah Bay. The newly constructed wooden walkway takes you to some of the most gorgeous, rugged and wild scenery on the Pacific Coast.
Be sure to take time to explore the internationally known Makah Museum. The museum is open every day during the summer months and closed Mondays and Tuesdays from Sept. 16 through May 31. The hours are 10AM-5PM. The Makah Museum is the nation's sole repository for archaeological discoveries at the Makah Coastal village of Ozette. The centuries-old village was located 15 miles south of present-day Neah Bay. Ozette served the Makah people as a year-around home well into the 20th century.
In 1970 tidal erosion exposed a group of 500-year-old Ozette homes that have been perfectly preserved in an ancient mudslide. The thousands of artifacts subsequently discovered have helped recreate Makahs' rich and exciting history as whalers, fishermen, hunters, gatherers, craftspeople, basket weavers, and warriors. Lake Ozette is located off of Hwy 112 on the Hoko-Ozette Road and follow the road 21 miles to the Ozette Ranger Station.
Three miles of planked trail leads the hiker to Sand Point, one of the most beautiful and primitive beaches on the coast. Continuing north along the beach you will find dozens of Indian petroglyphs at Wedding Rocks, ask for the interpretive handout at the ranger station. The northern point of this 9-mile triangular trail is Cape Alava, with a rocky shore and reefs to explore at low tide. Cape Alava is also the site of an ancient Makah village. The site is now closed and marked with a small sign. Be sure to check a tide table and carry the 10 essentials - and lots of film as seals, deer, eagles and perhaps osprey, otters and whales may be there, rain or shine! Hike north to Cape Alava along the beach to keep the ocean breeze at your back, and avoid Vibram-soled shoes as the cedar plank walkway can be slick!
Salt Creek County Park located on the Strait of Juan de Fuca west of Port Angeles offers fascinating tidal pools, (ask your hosts regarding tide tables). The Dungeness Spit and Wildlife Refuge offers great beach hiking and wildlife. The Olympic Game Farm in Sequim is great for children of all ages. Ediz Hook in Port Angeles provides great views of the Olympic and Cascade mountains. Ediz Hook is part of the 5.5 miles of Waterfront Trail; perfect for jogging, walking, biking, or rollerblading.
The Elwha Valley west of Port Angeles is a beautiful drive along the rushing Elwha River. Madison Falls is an easy hike. Further up the valley beyond Lake Mills is the trail head to the Olympic Hot Springs.
Port Townsend, known as "Washington's Victorian Seaport" is less than an hour east of Sequim. Victorian homes and commercial buildings erected during the late 1800s are still the city's trademark, along with Fort Worden State Park.
Park fee: A pass is required to enter the Olympic National Park. The fee is $10.00 per car load and is good for 7 days. It can be attained at any of the Park entrances. No pass is required during the winter months for the Elwha Valley or the Sol Duc Valley. Phone # for Olympic National Park Visitors Center in Port Angeles is 360-452-2713.
Getting there…
Directions: From Vancouver it is a 5-6 hour drive to the Olympic Peninsula. Head South on Oak or Knight to connect up with Hwy 99 to the US border and continue South on Hwy 5, past Bellingham, take Hwy 20 to Anacortes.Head South on Hwy 20 until you get to the Keystone Jetty. Take the ferry from Keystone to Port Townsend. From Port Townsend take Hwy 20 until it connects with Hwy 101. Turn right onto Hwy 101 and head West.
You will pass through Port Angeles. This is an excellent place for you to top up your food stores and fill up with gas. Just after Port Angeles, look for a sign for Hwy 112 (towards Joyce, Neah Bay & Seiqu). Turn right and head West. It is about another 30 kms from Port Angeles to Whiskey Creek.From the turn-off it is about 10 miles to Joyce.
This little town has restaurants and gas stations. From Joyce it is another 3 miles to the campsite at Whiskey Creek where Joe or Ronee can help direct you to your cabin or campsite. I'd be happy to help your out with directions to the best pie or yummiest fossils. Enjoy!
Friday, 6 July 2018
Thursday, 5 July 2018
Wednesday, 4 July 2018
BLACK IN AMERICA: PEONAGE REPLACES SLAVERY
In 1866, one year after the 13 Amendment was ratified (the amendment that ended slavery), Alabama, Texas, Louisiana, Arkansas, Georgia, Mississippi, Florida, Tennessee, and South Carolina began to lease out convicts for labour (peonage).
This made the business of arresting Blacks very lucrative, which is why hundreds of White men were hired by these states as police officers. Their primary responsibility was to search out and arrest Blacks who were in violation of Black Codes. Once arrested, these men, women and children would be leased to plantations where they would harvest cotton, tobacco, sugar cane. Or they would be leased to work at coal mines or railroad companies. The owners of these businesses would pay the state for every prisoner who worked for them; prison labour.
It is believed that after the passing of the 13th Amendment, more than 800,000 Blacks were part of the system of peonage, or re-enslavement through the prison system. Peonage didn’t end until after World War II began, around 1940.
This is how it happened.
The 13th Amendment declared that "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction." (Ratified in 1865)
Did you catch that? It says, “neither slavery nor involuntary servitude could occur except as a punishment for a crime.” Lawmakers used this phrase to make petty offences crimes. When Blacks were found guilty of committing these crimes, they were imprisoned and then leased out to the same businesses that lost slaves after the passing of the 13th Amendment. This system of convict labour is called peonage.
The majority of White Southern farmers and business owners hated the 13th Amendment because it took away slave labour. As a way to appease them, the federal government turned a blind eye when southern states used this clause in the 13th Amendment to establish laws called Black Codes.
Here are some examples of Black Codes:
In Louisiana, it was illegal for a Black man to preach to Black congregations without special permission in writing from the president of the police. If caught, he could be arrested and fined. If he could not pay the fines, which were unbelievably high, he would be forced to work for an individual or go to jail or prison where he would work until his debt was paid off. If a Black person did not have a job, he or she could be arrested and imprisoned on the charge of vagrancy or loitering.
This next Black Code will make you cringe. In South Carolina, if the parent of a Black child was considered vagrant, the judicial system allowed the police and/or other government agencies to “apprentice” the child to an "employer". Males could be held until the age of 21, and females could be held until they were 18. Their owner had the legal right to inflict punishment on the child for disobedience and to recapture them if they ran away.
This peonage is an example of systemic racism — racism established and perpetuated by government systems.
Slavery was made legal by the U.S. Government. Segregation, Black Codes, Jim Crow and peonage were all made legal by the government, and upheld by the judicial system. These acts of racism were built into the system, which is where the term “Systemic Racism” is derived.
This is the part of "Black History" that most of us were never told about.”
Tuesday, 3 July 2018
Monday, 2 July 2018
TOPSY TURVY: PROCYON LOTOR
Everything you've read about them falls short of this wee fellow. While meant to be nocturnal, he's out in the day. I've read that they are shy and avoid human contact, but he's playful, curious and would love to be social. While sitting on my deck, he'll slowly sneak up to check out what I'm doing.
I've seen him roll around in the flowerbed in full sun, clearly loving his time, sit up to examine his toes for 30-40 minutes at a time. I've read somewhere that they are bright little fellas, and it's true for this guy. He's figured out how to get the unlockable compost container unlocked and harvested for all it's tasty, rotten veggies. Mmmm, quite a charmer!
Sunday, 1 July 2018
HAPPY CANADA DAY
Saturday, 30 June 2018
Friday, 29 June 2018
GULLS ON THE FORESHORE: T'SIK'WI
A gull cries in protest at not getting his share of a meal |
Thursday, 28 June 2018
GOTLAND: SWEDISH TERRENEUVIAN
Gotland: Swedish Island in the Baltic Sea |
Brachiopods are one of the few groups of marine animals that have a relatively complete extant to fossil record from their sporadic modern distribution all the way back to the Terreneuvian in the early Cambrian.
Thursday, 21 June 2018
THE PACIFIC NORTHWEST
This stretch of coastline is home to the Clallam Formation, a thick, mainly marine sequence of sandstones and siltstones that line the northwestern margin of western Washington. These beachfront exposures offer plentiful fossils for those keen to make the trek.
The beautifully preserved clams, scallops and gastropods found here are mostly shallow-water marine from the late Eocene to Miocene. Time, tide and weather permitting, a site well worth visiting is the south flank of a syncline at Slip Point, near Clallam Bay. Head to the most Northwestern tip of the lower 48, visiting Cape Flattery on the Makah Reservation located 75 miles NW of PA on Hwy 112. Cape Flattery is located approx 7 miles from Neah Bay. The newly constructed wooden walkway takes you to some of the most gorgeous, rugged and wild scenery on the Pacific Coast.
Be sure to take time to explore the internationally known Makah Museum. The museum is open every day during the summer months and closed Mondays and Tuesdays from Sept. 16 through May 31. The hours are 10AM-5PM. The Makah Museum is the nation's sole repository for archaeological discoveries at the Makah Coastal village of Ozette. The centuries-old village was located 15 miles south of present-day Neah Bay. Ozette served the Makah people as a year-around home well into the 20th century.
In 1970 tidal erosion exposed a group of 500-year-old Ozette homes that have been perfectly preserved in an ancient mudslide. The thousands of artifacts subsequently discovered have helped recreate Makahs' rich and exciting history as whalers, fishermen, hunters, gatherers, craftspeople, basket weavers, and warriors. Lake Ozette is located off of Hwy 112 on the Hoko-Ozette Road and follows the road 21 miles to the Ozette Ranger Station.
Three miles of planked trail leads the hiker to Sand Point, one of the most beautiful and primitive beaches on the coast. Continuing north along the beach you will find dozens of Indian petroglyphs at Wedding Rocks, ask for the interpretive handout at the ranger station. The northern point of this 9-mile triangular trail is Cape Alava, with a rocky shore and reefs to explore at low tide. Cape Alava is also the site of an ancient Makah village. The site is now closed and marked with a small sign. Be sure to check a tide table and carry the 10 essentials - and lots of film as seals, deer, eagles and perhaps osprey, otters and whales may be there, rain or shine! Hike north to Cape Alava along the beach to keep the ocean breeze at your back, and avoid Vibram-soled shoes as the cedar plank walkway can be slick!
Salt Creek County Park located on the Strait of Juan de Fuca west of Port Angeles offers fascinating tidal pools, (ask your hosts regarding tide tables). The Dungeness Spit and Wildlife Refuge offers great beach hiking and wildlife. The Olympic Game Farm in Sequim is great for children of all ages. Ediz Hook in Port Angeles provides great views of the Olympic and Cascade mountains. Ediz Hook is part of the 5.5 miles of Waterfront Trail; perfect for jogging, walking, biking, or rollerblading.
The Elwha Valley west of Port Angeles is a beautiful drive along the rushing Elwha River. Madison Falls is an easy hike. Further up the valley beyond Lake Mills is the trailhead to the Olympic Hot Springs.
Port Townsend, known as "Washington's Victorian Seaport" is less than an hour east of Sequim. Victorian homes and commercial buildings erected during the late 1800s are still the city's trademark, along with Fort Worden State Park.
Park fee: A pass is required to enter the Olympic National Park. The fee is $10.00 per carload and is good for 7 days. It can be attained at any of the Park entrances. No pass is required during the winter months for the Elwha Valley or the Sol Duc Valley. Phone # for Olympic National Park Visitors Center in Port Angeles is 360-452-2713.
Getting there…
Directions: From Vancouver, it is a 5-6 hour drive to the Olympic Peninsula. Head South on Oak or Knight to connect up with Hwy 99 to the US border and continue South on Hwy 5, past Bellingham, take Hwy 20 to Anacortes.Head South on Hwy 20 until you get to the Keystone Jetty. Take the ferry from Keystone to Port Townsend. From Port Townsend take Hwy 20 until it connects with Hwy 101. Turn right onto Hwy 101 and head West.
You will pass through Port Angeles. This is an excellent place for you to top up your food stores and fill up with gas. Just after Port Angeles, look for a sign for Hwy 112 (towards Joyce, Neah Bay & Seiqu). Turn right and head West. It is about another 30 km from Port Angeles to Whiskey Creek. From the turn-off, it is about 10 miles to Joyce. This little town has restaurants and gas stations. From Joyce, it is another 3 miles to the campsite at Whiskey Creek where Joe or Ronee can help direct you to your cabin or campsite.
Saturday, 16 June 2018
Thursday, 14 June 2018
TERRACOTTA WARRIORS
Tuesday, 12 June 2018
TELLING TIME: AMMONITE SUTURES
If they are geometric with numerous undivided lobes and saddles and eight lobes around the conch, we refer to their pattern as goniatitic, a characteristic of Paleozoic ammonites.
If they are ceratitic with lobes that have subdivided tips; giving them a saw-toothed appearance and rounded undivided saddles, they are likely Triassic. If they have lobes and saddles that are fluted, with rounded subdivisions instead of saw-toothed, they are likely Jurassic or Cretaceous.
Sunday, 10 June 2018
Wednesday, 6 June 2018
AMMONITE: PART AND COUNTERPART
We find ammonite fossils (and plenty of them) in sedimentary rock from all over the world. In some cases, we find rock beds where we can see evidence of a new species that evolved, lived and died out in such a short time span that we can walk through time, following the course of evolution using ammonites as a window into the past. For this reason, they make excellent index fossils. An index fossil is a species that allows us to link a particular rock formation, layered in time with a particular species or genus found there. Generally, deeper is older, so we use the sedimentary layers rock to match up to specific geologic time periods, rather the way we use tree-rings to date trees.
Sunday, 3 June 2018
CaCO3 + CO2 + H2O → Ca (HCO3)2
With a strong love of natural objects, my own home boasts several stunning abalone shells conscripted into service as both spice dish and soap dish.
As well as beautiful debris, shells also played an embalming role as they collect in shell middens from coastal communities. Having food “packaging” accumulate in vast heaps around towns and villages is hardly a modern phenomenon.
Many First Nations sites were inhabited continually for centuries. The discarded shells and scraps of bone from their food formed enormous mounds, called middens. Left over time, these unwanted dinner scraps transform through a quiet process of preservation.
Time and pressure leach the calcium carbonate, CaCO3, from the surrounding marine shells and help “embalm” bone and antler artifacts that would otherwise decay. Useful this, as antler makes for a fine sewing tool when worked into a needle. Much of what we know around the modification of natural objects into tools comes from this preservation.
Calcium carbonate is a chemical compound that shares the typical properties of other carbonates. CaCO3 is common in rocks and shells and is a useful antacid for those of you with touchy stomachs. In prepping fossil specimens embedded in limestone, it is useful to know that it reacts with stronger acids, releasing carbon dioxide: CaCO3(s) + 2HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)
For those of you wildly interested in the properties of CaCO3, may also find it interesting to note that calcium carbonate also releases carbon dioxide on when heated to greater than 840°C, to form calcium oxide or quicklime, reaction enthalpy 178 kJ / mole: CaCO3 → CaO + CO2.
Calcium carbonate reacts with water saturated with carbon dioxide to form the soluble calcium bicarbonate. Bone already contains calcium carbonate, as well as calcium phosphate, Ca2, but it is also made of protein, cells and living tissue.
Decaying bone acts as a sort of natural sponge that wicks in the calcium carbonate displaced from the shells. As protein decays inside the bone, it is replaced by the incoming calcium carbonate, making makes the bone harder and more durable.
The shells, beautiful in their own right, make the surrounding soil more alkaline, helping to preserve the bone and turning the dinner scraps into exquisite scientific specimens for future generations.