Within the Northern Rivers region, situated in the far north eastern corner of New South Wales, stands a remnant, a legacy of a mighty shield volcano that existed millions of years ago. Named the Tweed Volcano, this impressive volcano once dominated the region, with evidence of its reign – from towering peaks to fertile plains scattered throughout the Tweed Region. My name is Ryan, an enthusiastic hiker from Brisbane, a large metropolis a stone’s throw north of the Tweed Volcano, and today I will be hiking around the rim of the heavily eroded caldera of the Tweed Volcano. I have always had a keen fascination with the volcanoes which once dominated the now volcanically inactive landmass of Australia, and the Tweed volcano is one of the best …show more content…
I reached the gap between the Nightcap Range and Lamington Range in the east. I wanted to tackle the Lamington Range first, because it was the taller and harder of the two mountain ranges that make up the Tweed Caldera. I walked north west towards the start of the Lamington Range. Battling the dense vegetation, I clambered up the steep terrain. I could hear Kookaburra laughing as I awkwardly struggled up the stairs. As I reached the summit of the first hill, I peered over a gap in the trees excitedly to take in the amazing view. From here, the “scooped out” centre of the Tweed Caldera becomes apparent. Mount Warning rises proudly at the centre of the crater. Just as I was admiring this breathtaking view, I did not notice an inconspicuous tree root jutting out of the ground. As I took another step near the forest clearing that exposed the brilliant view, I accidentally tripped over the root that was obscuring my path. I nearly tumbled a few metres down the steep rhyolite cliffs, but luckily, due to my quick reflexes, I was able to grab an overhanging vine to prevent myself from a nasty fall. But when I grabbed onto the vine, while I prevented myself from falling, my phone, which was my only means of contact with
Brimbank Park consists mainly of sedimentary rock, due to its close proximity to the Maribyrnong River. Along the banks, alluvial deposits and terrace sediments arise from the Quaternary Period (Geological map of Victoria, 1973). Although there is a distinct lack of igneous rock in area, the sediments from primary igneous rock upstream have weathered and been carried downstream onto the river banks. This process has been accelerated due to the water in the ecosystem.
Miesse, Willian C. "Mount Shasta Geology and History." USGS: Volcano Hazards Program - Mount Shasta Geology and History. College of the Siskiyous Library, n.d. Web. 01 May 2014.
It was Saturday morning at Alexan’s vacation home in Tehachapi, CA. We ate our breakfast, and decided to go for a hike in the dangerous mountains of Tehachapi. It was approximately fifty degrees Fahrenheit and the clouds had covered the mountains, causing the area to be very foggy and difficult to see. Knowing that it was not a good idea Alexan still managed to convince me to go hiking, and he said to me, “Don’t worry it will be fine”. This reminded me of Oliveira saying to Ronald, “I think you feel very sure of yourself, firmly planted in yourself and in your surroundings” (Oliveira 161). Both Ronald and my friend Alexan felt very sure that they were right, and did not have any worries. I do not think Alexan even took a single thought about the dangers we could face hiking in the steep mountains with the harsh conditions we were facing. Ronald did not care to change his mind and agree with Oliveira, because he felt very confident with what he believed.
Wood and Kienle, 1990, Volcanoes of North America: United States and Canada: Cambridge University Press, 354 p., p. 158-160, Contribution by Patrick Pringle.
Stone Mountain rises in sharp contrast to the surrounding flat, rolling landscape creating a geomorphic monadnock. Geologists appear to have consensus of the volcanic origins and underground formation of t...
Stephen .G,Malcolm.W, Guy H,(2014), GEOL20001 The Geology of Southeast Australia, School of Earth Sciences, University of Melbourne, pg. 23-25
William Marcy Tweed was the most corrupt "American Politician" the state of New York has ever seen. Tweed was known as "Boss Tweed" and he was the first man to be the boss of New York after the ten year struggle. ("American Heritage") The Boss was the leader of a political machine, which was a political organization that controlled
Mount Tambora, located on the Island of Sumbawa, Indonesia is classified as a Stratovolcano. Also known as a composite volcano, Tambora is a tall conical volcano (cone like structure) where layers of the walls are built by hardened lava and volcanic ash. The term composite is used to describe the volcano due to the composite layered structure built from sequential outpourings of eruptive materials1. Among the most common types of volcanoes, Tambora also shares its destructive prowess with best-known volcanoes such as Krakota (1883) and Vesuvius (79 A.D). The Island of Sumbawa is located in the middle of the Lesser Sunda Islands chain (a group of islands in the southern Maritime Southeast Asia) and is in the province of West Nusa Tenggara3. A map of Mount Tambora is shown in Figure 1 to provide a better perspective of its location. Interestingly enough, Tambora forms its own peninsula on Sumbawa, known as the Sanggar Peninsula. In April of 1815, after years of dormancy, Mount Tambora erupted with great intensity, approximately 7 on the volcanic explosivity index, which is shown in Figure 2. It has been estimated that the eject volume of Tambora was 160 cubic kilometres, which represents the largest volcanic eruption in recorded history. The death toll has been projected to be at least 71,000 people, of who over 15% were killed directly from the eruption1. The remaining 75% have been thought to succumb to starvation and disease, as the eruptive fallout decimated the agricultural industry in the region. Following the eruption, a volcanic winter ensued. As sun become less abundant due to clouds of ash, crops and livestock perished. Please note that all definitions appearing in the footnotes are either taken from already referenced so...
Boom! A once ice-capped mountain peak explodes as ash fills the air. “‘Vancouver, Vancouver, this is it!’”Those were the last words of expert geologist David Johnston (Gunn 561). In 1980, Mount Saint Helens of the state of Washington erupted, filling the air with ash and causing mudflows powerful enough to lift tons. It decimated everything in its path. The eruptions, mudflows, and ash caused great damage on the landscape, yet it gave us information on how catastrophes happen and how they affect society and the surrounding landscape. The data acquired can also help us understand the way the landscape was formed. Mount Saint Helens caused much damage, but also helped people understand the science behind it.
These differences are in the makeup of the volcano, the impact on society, and the eruption itself. Mount Saint Helens, used to be a wonder of the world, but now a damage site of what happened on May 18, 1980. Mauna Loa is a tourist destination and one of the most active dispensers of lava and magma in the world. As shown, these volcanoes can’t be more different. Yet, each volcano has been a culprit to destruction, and have similarities within themselves. This report has expressed many similarities and differences and brought facts and knowledge to the historical eruptions by these impressive and ancient structures of
Super Volcanoes There is no exact definition for a super volcano, but the expression is often used to refer to volcanoes that have produced extraordinarily large eruptions in the past. When one of these large eruptions occurs, a huge amount of material is blasted out of the super volcano, leaving a massive crater or caldera. A caldera can be as much as forty or fifty miles wide. At Yellowstone, the caldera is so big that it includes a fair amount of the entire park. In effect, it is so big that at first scientists didn't see the state a caldera had until it was photographed from space.
My legs ache from this long, treacherous hike. As I walk up the rocky, steep trail, my feet start to slip, but I regain balance before I fall. I shiver from the extremely cold temperatures, and my body starts to go numb. Soon I realize, my body can not take this hike for much longer. When I find a nice place to rest and make camp, I pray that there are no bears or other predators that are looking for a feast. Just as I was about to get some sleep, I hear a loud noise, coming from the mountains. I look over and see an avalanche coming down straight towards me. I grab all my stuff and start running the other way, trying my hardest to get away from the rocks tumbling towards me. This extreme place is located in the Rocky Mountain Range, and is the highest point in Colorado and the rocky mountain range.Mount Elbert has an impact on animal's, temperature, and the steepness and extremeness of the mountain.
Volcanoes are one of the most destructive forces on Earth. It is estimated that some 500 million people live near active volcanoes (Lutgens and Tarbuck, 2013). Of the Earth's known volcanoes, 70 are expected to erupt each year with at least one large eruption each decade (Lutgens & Tarbuck, 2013). As populations continue to increase and more people are attracted to the beauty surrounding these areas, the immediate threat to humans from these sometimes sleeping giants grows. Due to this, the study of volcanoes and the service that volcanologists provide to the public by way of information and predictions on activity is immeasurable.
Mount Vesuvius is a volcano located in southern Italy, near the bay of Naples and the city of Naples. It is the only active volcano on the European mainland. Vesuvius rises to a height of 1277 m (4190 ft). Vesuvio (Vesuvius) is probably the most famous volcano on earth, and is one of the most dangerous.