BON ECHO PROVINCIAL PARK IN ONTARIO, CANADA AND ITS
Transcription
BON ECHO PROVINCIAL PARK IN ONTARIO, CANADA AND ITS
Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 BON ECHO PROVINCIAL PARK IN ONTARIO, CANADA AND ITS SPECTACULAR SCENERY Arun Kumar The rock cliff face has over 260 pictographs made by the native peoples of Canada some of which are estimated to be over one thousand years old……… Bed rock geology of this park is dominated by gabbro and granite and northwest trending geological faults have shaped its landscape. This region had gone through several advances and retreats of ice-sheets during the Quaternary Ice Age causing outcropping rocks to be eroded and become rounded. In the last weekend of August, 2015, I along with my friend PradeepPradhan, his wife Neelam and their son Nikhil camped in the Bon Echo Provincial Park in south central Ontario (Figure 1). This park covers an area of 66 km2and lies about 230 km northeast of Toronto. This article describes and illustrates some of the natural wonders of this park. The information in this article is primarily derived from websites 1 and 2. The Bon Echo Park has several lakes, most famous being the Mazinaw Lake, which is the second deepest lake in Ontario. This park is famous for the Mazinaw Rock which is an almost two km long, vertical cliff that rises to one hundred meters on the southeastern shore of the Mazinaw Lake (Figure 2). The rock cliff face has over 260 pictographs made by the native peoples of Canada some of which are estimated to be over one thousand years old (Figure 5E). This is the largest collection of native pictographs in Canada. A boat excursion of the Upper Mazinaw Lake provides an opportunity for closeup views of the imposing Mazinaw Rock cliff (Figure 2), a variety of metamorphic rocks and associated structures (Figure 4), the native pictographs (Figure 5E), various evergreen and deciduous treesgrowing on this cliff and the famous ancient cedar trees (Figures 2, 4 and 7A). These cedar trees are hundreds of years old and at least one of them ‘the witness tree’ (Figure 7A) is estimated to be over one thousand years old (website 3). Another interesting point is the 'turtle rock' (Figure 5A), in the folklore of the local aboriginal people it was a symbol of a turtle deity that carries the world on its back. There is a climb of over two hundred feet from the lake level through the lush green forest to the top of the Mazinaw Rock. The top of the Mazinaw Rock offers spectacular views of this provincial park. The Bon Echo Visitor’s Centre showcases snakes and captive animals such as black bears. It also shows life in this area in the 1800s showcasing the rich history of the region. For a wonderful journey to this park two Youtube websites are recommended (websites 4 and 5). 1 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 A B C Figure1: Location of the Bon Echo Provincial Park, Ontario. A. Google map showing location of south central Ontario and nearby major cities. B. Google map showing closeup of the park and several lakes of the area. C. The Pradhan family at the narrows separating the Upper Mazinaw Lake from the Lower Mazinaw Lake: Pradeep (standing), Neelam (sitting in middle) and Nikhil (Photo: the author). 2 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 A B C Figure 2: The Mazinaw Rock. A. A panoramic view nearing sunset. B. The Mazinaw Rock and the Upper Mazinaw Lake; the author in foreground. C. Trees growing on the slopes and along the cracks of the vertical cliff (All photos by Nikhil Pradhan). 3 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 Br ief histor y of the park Once lumbering companies left the Bon Echo region Weston A. Price purchased this area in 1889. He and his wife were fascinated by the Mazinaw Rock, the lake and the surrounding area. They named this area "Bon Echo" because of the echo emanating from the Mazinaw Rock and heard across the Mazinaw Lake. The Price family built a large hotel at the narrows and named it the Bon Echo Inn. Few years later Mr. Price sold his assets at Bon Echo to Howard and Flora MacDonald Denison. The new owners turned the Bon Echo Inn into a popular place for artists, poets, and writers. The most notable of these people was James Thurber; he was a famous American cartoonist and author. Although Walt Whitman, another celebrated American poet and essayist, had never visited Bon Echo, Flora admired his work so much that she commissioned a piece of his poetry to be chiseled into the face of the rock in foot-tall lettering (Figure 3). The work took all of the summer of 1919 to complete. In 1936 the inn and many surrounding buildings were destroyed in a fire due to a lightning strike and the inn was never rebuilt. In 1955 the Province of Ontario passed legislation allowing Merrill Denison, the son of Howard and Flora MacDonald Denison, to accept donations of land to form the provincial parks. Denison donated the land to the province for the purpose of forming a park in 1959 and in 1965 the Bon Echo Provincial Park was officially opened. Geology of the par k Bed rock geology of this park is dominated by gabbro and granite and northwest trending geological faults have shaped its landscape. The bedrock is of Middle Proterozoic age (generally older than 1.265 billion years) and lies within the Central Metasedimentary Belt of the Grenville Province. This area had a complex geological history interrupted by late-stage regional faulting. Easton (1994) is suggested for people who are interested in a detailed description of the geology of this park and the information presented in this article is primarily based on this publication. The Grenville Structural Province in Ontario consists primarily of metamorphosedsedimentary and igneous rocks and can be divided into two subdivisions: a northern belt dominated by 1.4 to 2.7 billion years old gneisses known as the Central Gneiss Belt and the southern belt dominated by 1.1 to 1.3 billion years old metamorphosed sedimentary rocks known as the Central Metasedimentary Belt. The Bon Echo Provincial Park is underlain by the Central Metasedimentary Belt (Figure 4). East and northwest trending faults of Paleozoic age are probably related to the Ottawa- Bonnecheregraben system that are exposed in this park (Williams et al. 1991).East and northwest trending faults most likely of Paleozoic age cut through this park; the Mazinaw Rock and the Mazinaw Lake lie along one of these northwest trending fault traces (Figure 3). The eastern section of the park has been uplifted from 0.5 to 1.5 4 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 kilometers relative to the western boundary of the park. This park lies in a geologically unique area of eastern Ontario, the northwest trending faults exemplified by the fault scarp of the Mazinaw Rock were critical in creating the park’s landscape (Figures 2 A and B). Figure 3: A piece of poetry by Walter "Walt" Whitman, an American poet is chiseled on the face of the rock in foot-tall lettering. It was dedicated in August 1919. Flora MacDonald Denison is under the "P" in "amplitude". Her son Merrill Denison is under "know".(https://en.wikipedia.org/wiki/Bon_Echo_Provincial_Park#/media/File:Bon_Ech o_- _Old_Walt.png) This region had gone through several advances and retreats of ice-sheets during the Quaternary Ice Age causing outcropping rocks to be eroded and become rounded (Figures 5 B and D). This glacial activity left several glacial deposits in the park especially the Pleistocene till and glacio-fluvial deposits. For example the sand and gravel located along the Mazinaw Lake near the park office are probably related to a fandelta deposit of a drainage of the past much larger Bon Echo Creek into a much larger glacial lake occupying the Mazinaw Lake valley. These glacial deposits are overlain by the Recent deposits composed of organic swamp and alluvial deposits. 5 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 A B Figure 4: Close-up views of the Mazinaw Rock. A. These rocks show granite sills within amphibolite and metasediment host rocks (Easton 1994, p. 53). B. This photo is showing foliations dipping east-southeast between 450and 750(Photos: the author). 6 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 A B C 7 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 D E Figure 5: Close-up views of the Mazinaw Rock. A. Canoeing under the ‘Turtle Rock’ which is a popular landmark of the Mazinaw Rock. B and E. Smoothly rounded surfaces of the rocks indicating movement of glacial ice sheets over them. C. Quartz veins in metasedimentary rocks. D. Aboriginal pictograph on the Mazinaw Rock face (Website 2: Indian Art from Wikipedia by Gordon E. Robertson - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=11444014 (All photos except D: the author). Glaciers are formed when the amount of snow falling from the sky exceeds the amount of snow melting each season; a permanent body of ice forms i.e. a glacier. Ice sheets are much larger forms of glaciers. In the geological past these gigantic ice sheets covered entire continents, fed glaciers around their edges and ‘calved’ icebergs when pieces of the ice sheet broke off into the oceans. Over 11,000 years ago glacial ice sheets covered this region and have left their mark. As the ice melted lakes were formed with the melted glacial ice approximately a quarter of a million freshwater lakes were formed only in Ontario (Southerland, 2011 in website 6). 8 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 There are large isolated boulders found all over the park known as glacial erratics. These are stones of various sizes that were carried by glaciers across North America during the last ice age. Outcrops of granite sometimes show the direction these glaciers once moved by noting striation marks which are a series of parallel indented grooves left behind by glaciers. Animals and Plants The park has a variety of animals and plants that inhabit the park’s topographically controlled diverse habitats like lakes, streams, swamps, forests, thin soil and bedrock exposures, and cliffs etc. They support a variety of plant and animal communities. Several lakes in the park have rock bottoms that were carved by glacial movements, are relatively free of detritus and sand thus the water is normally clear and cold. As a result these lakes are comparatively devoid of fish and plant species. Although smaller fish can be seen closer to the shores and they may also crowd around the islands in these lakes. A variety of animals can be seen in secluded areas of the park, for example, white-tailed deer, moose, black bears, red foxes, beavers and raccoons. Other animals in this region areeastern cottontail rabbits, eastern chipmunks, red squirrels, gray squirrels and voles. It also hosts Ontario's only lizard which is the five-lined skink. Several birds, insects and fungi are common in the park. The trees of this park are part of a new-growth forest (cut or burnt now regenerating), making them relatively young. This region was logged extensively during the mid-1800s for its old-growth pine trees yet the park is one of the few remaining oldgrowth forests in North America. Cliffs of the Mazinaw Rock support ancient White Cedars (Thujaoccidentalis) which may live up to 1,500 years. There is one such tree which is supposedly over one thousand years old; it is popularly known as the witness tree (Website 3; Figure 7A). Their longevity is attributed to their extremely slow growth. The oldest ones measure less than 3 meters tall and 30 centimeters thick (Richards, 2011 in website 6). The beginning of soil development on the cliffs of the Mazinaw Rock can be noticed as pioneer species such as lichens and grasses are attempting to create soil from the decomposition of their own tissue. The higher parts of the cliff have thinner soil that cannot retain much water, only drought resistant species of plants can grow, thus fewer large trees, and many juniper (Juniperus) shrubs occur here. Bon Echo is part of the transition forest of the southern Canadian Shield; thus it is a mixed forest region and contains a variety of coniferous and deciduous trees including red oak (Quercusrubra ), spruce (Picea ) and sugar maple (Acer saccharum). The fall color changes in the forests of Bon Echo are stunning and can be observed almost daily. Birch (Betula ) and poplar (Populus) trees show their beautiful yellow color while the maple (Acer ) begins to show shades of red and orange. The fall view from the top of the Mazinaw Rock is awesome. 9 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 A B 10 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 C D 11 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 E Figure 6:A. A panoramic view of the Bon Echo Park from the top of the Mazinaw Rock showing upper Mazinaw Lake and a variety of coniferous and deciduous trees. B. D. and E. Native wild flowers. C. A patch of coniferous forest on top of the Mazinaw Rock. (All photos: the author). A 12 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 B C 13 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 D Figure 7: A. The witness tree is an ancient White Cedar (Thujaoccidentalis) which is supposedly over one thousand years old. B. A model of Lake Mazinaw showing its depth profile. C. A panel in the local museum showing various rock types and explains the geology of the park. D. A sign board explains the cliff top rehabilitation project in the park (All photos: the author). A 14 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 B C 15 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 D Figure 8: Scenes of mist in the Mazinaw Lake. A. A canoe in the distance. B. Rising mist on the lake. C. Sunrise through the mist. D. Tranquil water surface of the lake and rising mist (Photos: A. B. and D. the author and C. Nikhil Pradhan). Magical view of mist on the Mazinaw Lake The morning of 28thAugust 2015 in the Bon Echo Park was quite cold, cloudy and without any breeze. We woke up early and decided to go to Lake Mazinaw’s shore. The view of the lake was just magical; lake waters were absolutely calm. Bluish mist was rising from the lake surface, at times totally covering the Mazinaw Rock, but the upward movement of mist opened frequent windows for the clear sight of these magnificent cliffs. The place was absolutely quiet and the only sound that we heard was our own. In a distance, almost in the middle of the lake, we observed a canoe silhouette and later a faint sun appeared high above the cliffs. Figures 8 and 9 capture images of these almost dreamlike moments. 16 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 According to the National Geographic website (website 7) mist is tiny droplets of water hanging in the air and is formed when warmer water in the air is rapidly cooled causing it to change from invisible gas to tiny visible water droplets. Mist often forms when warmer air over water suddenly encounters the cooler surface of land. However mist can also form when warm air from land suddenly encounters cooler air over the ocean. Mist is a phenomenon caused by small droplets of water suspended in air. It is most commonly seen where warm, moist air meets sudden cooling. Fog and mist result from the same natural phenomena but there is a difference between the two. Fog is denser than mist, in fog visibility is one kilometer or less, in mist visibility is longer. Seen from a distance mist is bluish. A B 17 Open Access e-Journal Earth Science India- www.earthscienceindia.info Popular Issue, 9 (III), July, 2016, p. 1-16 C Figure 9: Scenes of mist in the Mazinaw Lake. A. Mist rising from the lake surface and the Mazinaw Rock is visible. B. Sunrise through the mist. C. Rising mist merges into the clouds (All photos: the author). Acknowledgements: I thank the Pradhan family for taking me on a camping trip to this park. Special thanks to Nikhil for providing me with a few photographs that were used in this article. I also thank my son Anshuman for linguistic improvements to this article. Refer ences Easton, R. M. 1994. Geology of Bon Echo Provincial Park, Frontenack and Lennox and Addington Counties, Grenville Province. Ontario Geological Survey, Open File Report 5899. Williams, H. R.; Sutcliffe, R. H.; and Scott Thurston, G. M. 1991.Geology of Ontario. Ontario Geological Survey Special Volume 4 Parts 1 & 2. Inter net r efer ences Website 1: https://en.wikipedia.org/wiki/Bon_Echo_Provincial_Park Website 2: https://commons.wikimedia.org/w/index.php?curid=11444014 Website 3: https://www.tripadvisor.de/LocationPhotoDirectLink-g1889154-d4588585i149508208-Bon_Echo_Provincial_ParkCloyne_Lennox_and_Addington_County_Ontario.html Website 4: https://www.youtube.com/watch?v=z583Liema4A W ebs ite 5: https://www.youtube.com/watch?v=17hZATb4hOs&feature=youtu.be&t=2 Website 6: file:///C:/Users/Arun%20Kumar/Desktop/Bon%20Echo%20article/Friends%20of%20Bo n%20Ec ho%20Park_%20Echoes.html Website 7: http://nationalgeographic.org/encyclopedia/mist/ About the Author Prof. Arun Kumar, Ph.D. Department of Earth Science, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6 Canada. Email: arunkumarlko@hotmail.com 18