Tuesday, April 24, 2007

Support for post on the "Formation of the Grand Canyon"




Brachiopod fossil along Boucher Trail (Picture 1 )
Crinoid and coral fossils along Widforss Trail (Picture 2)

In the process of looking for any new web information for this blog, I came across some support for an aquatic environment once existing in the Grand Canyon. The above pictures are fossils of organisms that live in water, as I discovered after looking up the names of the organisms to learn more about them. In my mind, these photos are full of possibilities.

Friday, April 20, 2007

Geology of the Grand Canyon





Formation of the Grand Canyon

After viewing the Grand Canyon, I believe the canyon may have been formed through processes other than weathering resulting from the flow of the Colorado River. Travel guides and books usually say the canyon formed because of the flow of Colorado River over rocks that has been occurring for the last million (or billion) years. However, I believe more was involved. I would suggest that a large lake used to fill the entire Grand Canyon. Of course, the lake dried up over time, due to the heat and lack of precipitation in the area, maybe in the same way Lake Asal is drying up. Even the Colorado River itself would have dried up if the Glen Canyon Dam had not been created. The formations of the rocks and the width of the Canyon leave me with that impression. I have seen what lakes look like when water dries up, and I see a correlation between the gorge left from the lake and the Grand Canyon gorge. The formation of the Grand Canyon must have been a fascinating process that would be fascinating to see replicated.

Thursday, April 19, 2007

Antelope Canyon



Antelope Canyon is a slot canyon on the Navajo (though they prefer to be called Dido) reserves made entirely of sandstone rock. The sandstone was gradually eroded by flash floods. Water easily seeps through the pores of sandstone allowing this type of extreme weathering to occur. During the annual flood season, up to 8 feet of stone can be worn away in a very short time.

Antelope Canyon has two sections. "These sections are referred to individually as Upper Antelope Canyon or The Crack; and Lower Antelope Canyon or The Corkscrew." Upper Antelope Canyon is found right inside the Canyon from the entrance. It is also the place where flash flooding occurs. Rainfall does not have to occur right over the Canyon for flash flooding to occur. Lower Antelope Canyon is on the opposite end of the canyon from the entrance. It is an outer section of sandstone.

Historical Facts:

Antelope did roam freely through Antelope Canyon in the past.
Navajos would prefer to be called Didos because they dislike the implications behind the name Navajo, which is a Spanish word that means "thief."

Meteor Crater



Late in our trip to the Grand Canyon, while visiting the La Posada hotel, my husband and I took a day to visit a nearby attraction called Meteor Crater. Meteor Crater is about 45 minutes from Wilson over a vast expanse of flat, sandy, arid grasslands. Meteor Crater was far more interesting than either of us would have imagined, and relatively cheap to get into at $12 for adults/6 dollars for children. Meteor Crater is the only major attraction in the area.

We discovered that Meteor Crater is a very old, huge depression 0.74 miles in diameter and 550 feet deep. Apparently, in prehistoric times a meteor fell from outer space and impacted the Earth. The impact shattered the meteor. 0nly a small piece of the meteor remains (bottom picture). The only evidence of the impact of the meteor is the depression and skid marks (uplifted portions of land surrounding the crater).

Canyons

The Grand Canyon is only one of the many Canyons scattered all over the world. Even in the state of Arizona, other canyons can be found: Meteor Canyon and Antelope Canyon. Other significant Canyons are found in Europe and South America. In Armenia, a well-known canyon is named Noravank Canyon. The Guaitara Canyon is in Colombia, South America. Canyons are inspiring natural formations found all over the world, displaying how time and erosion can dramatically change the landscape.


Canyons are unique in that there formations are made through time, weathering, erosion.

Tuesday, April 17, 2007

Global Warming- Post 3

Reading these articles did very little to change my opinion of Global Warming. After watching the video by Al Gore and the other by a group of scientists, I am convinced that Global Warming is a falsity. It is not something I should be freaking out about. However, that does not mean I am against caring for the Earth. While the Earth is not going to fall apart on us, I believe it is our duty to care for our planet. Let's face it, we have only one planet to live on and a remote possibility that we could destroy the Earth does exist. But I will admit that my concerns lie with the other environmental issues of the day, not with Global Warming. For example, we treat animals very badly in our meat production factories. Animals should not be treated with brutality in the process of providing us the consumers a product. Saving endandered wildlife is a concern as well. We should do whatever we can to find a balance between human need for land to live on and an animal's need for the same. The threat environmental issues pose to human health is another consideration. Human health is fragile, as seen in the high incidence of cancer among us. Widespread impure waters cannot be good for humanity. Caring for the earth in order to save fun environments is important as well. Swimming in different waterways, such as rivers, lakes, and streams is a thing of the past in some areas because of pollution. Beautifying our world is a cause I am personally invested in. For example, it is important to clean roads and cities for aesthetic reasons. Highways are more beautiful when they are not marred by litter, as are cities. I am committed to offering my services to the environment and doing whatever I can to protect wildlife. Each one of us has a place in the effort of preserving our world.

What have you learned about the concept of Global Warming that you would like to share with other students?

Global Warming as a cause appears rather ridiculous after learning everything I have over the last few months. The proponents of Global Warming are inconsistent. Their cries of destruction fail to be actualized most of the time. Sometimes they predict an Ice Age, and at other times they predict warming, which leads me to believe that they are just trying to get people worked up and increase their income. I've learned that global warming is a more political than environmental cause. The fact that the origins of global warming coincide with Margaret Thatcher leads me to disbelieve the whole global warming debacle. Are politicians ever trustworthy? Trust- that leads me to the personal reasons or disbelieving in Global Warming. I cannot believe in something when I find the supporters of the cause to be untrustworthy. I have never felt Al Gore was an honest man. He has a strange vibe that causes me to put up my guard. I have to take everything he says with a grain of salt. The other people involved in the movement evoke the same reaction. It is too easy for politicians to approach environmental issues with ulterior motives, especially when money is involved.

I propose that students continue questioning everything they are presented with using the same methods they have been given while learning about and discussing Global Warming.

To my fellow students I say, Don't trust everything that is told you, even if you constantly hear the same thing from multiple voices. Don't trust the assumptions and presuppositions given you. Approach everything-- science, religion, textbooks, teachers, music, art, family-- with questions. Search for the truth. Look for all sides of an argument or cause. Know what you believe because you have researched it and found it to be true in your own heart and mind. Be wary of assumptions- in others and in yourself.