<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0">
  <channel>
    <title>Geology Group at eNotes</title>
    <link>http://www.enotes.com/geology/group</link>
    <description>The latest discussion, including questions and answers, from the Geology Group at eNotes.</description>
    <lastBuildDate>Wed, 16 Dec 2009 21:08:23</lastBuildDate>
    <language>en-us</language>
    <item>
        <title><![CDATA[Plate tectonics refers to the description of the structure of the top...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/describe-idea-plate-tectonics-what-drives-plates-124609</link>
        <description><![CDATA[Plate tectonics refers to the description of the structure of the top layer of the earth, and the movements that take occur in this layer. that are responsible for the origin of most of the physical features of of the earth's surface. Among others, plate tectonics also explain why earthquakes occur and why earthquakes and volcanoes occur where they do.
As per plate tectonic theory the outer layer of earth is composed of about 30 rigid pieces...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/describe-idea-plate-tectonics-what-drives-plates-124609</guid>
        <pubDate>Wed, 16 Dec 2009 21:08:23 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[Types of boundaries:
Collision.  In this type of boundary, two plates...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/what-hazards-from-volcanic-event-describe-them-124611</link>
        <description><![CDATA[Types of boundaries:
Collision.  In this type of boundary, two plates are colliding.  This can cause subduction (one plate sliding under the other) or uplift (mountains getting pushed up).
Transform.  Here, the two plates are sliding past one another.
Divergent.  In this type of boundary, plates are being pushed apart by upwelling magma.
Volcanoes are typically found near collision boundaries where subduction occurs (Japan, for example) or...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/what-hazards-from-volcanic-event-describe-them-124611</guid>
        <pubDate>Wed, 16 Dec 2009 20:28:31 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[The center of the Earth is hot because of radioactivity.  It is also...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/describe-idea-plate-tectonics-what-drives-plates-124609</link>
        <description><![CDATA[The center of the Earth is hot because of radioactivity.  It is also hot partly because of the energy that was released from the stuff that made up the Earth as that stuff fell and hit the rest of what was becoming Earth.  (Its kinetic energy turned to heat.)
Because the Earth's core is hot, magma in the mantle is constantly moving.  The magma pushes up in the boundaries between tectonic plates.  The pressure from this makes them move.
So,...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/describe-idea-plate-tectonics-what-drives-plates-124609</guid>
        <pubDate>Wed, 16 Dec 2009 20:20:44 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[What are the different types of boundaries and what volcanic features do...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/what-hazards-from-volcanic-event-describe-them-124611</link>
        <description><![CDATA[What are the different types of boundaries and what volcanic features do you find in each?]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/what-hazards-from-volcanic-event-describe-them-124611</guid>
        <pubDate>Wed, 16 Dec 2009 20:18:13 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[Describe the idea of plate tectonics.
What drives the plates'...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/describe-idea-plate-tectonics-what-drives-plates-124609</link>
        <description><![CDATA[Describe the idea of plate tectonics.
What drives the plates' movements?
Why is the center of the Earth hot?]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/describe-idea-plate-tectonics-what-drives-plates-124609</guid>
        <pubDate>Wed, 16 Dec 2009 20:08:02 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[In 1958, Tasmanian geologist Samuel Warren Carey, published "The...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/according-theory-dr-hess-what-nine-layers-earth-121863</link>
        <description><![CDATA[In 1958, Tasmanian geologist Samuel Warren Carey, published "The tectonic approach to continental drift" " as support theory for expansion of the global crust, from here developping the theory of tectonics of plates.
According to theory, the expansion is done by raising at the surface of some new rocks, along ocean's dorsals. Without postulating the existence of subduction zones and processed faults , the theory could not explain why there...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/according-theory-dr-hess-what-nine-layers-earth-121863</guid>
        <pubDate>Sat, 12 Dec 2009 10:02:22 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[ It can be said that Granite is the most common rock in the Earth's...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/how-far-down-does-granite-go-into-earth-123059</link>
        <description><![CDATA[ It can be said that Granite is the most common rock in the Earth's crust, being present in tectonic or sedimentary areas .
Granite is an igneous rock solid, with coarse grain (with crystal size of several millimeters), formed at large depths, containing mainly quartz, feldspar and dark minerals as mica.
Characteristic for granite, also called platoon, are great depths where it is formed, the rocks that are formed at shallower depths then...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/how-far-down-does-granite-go-into-earth-123059</guid>
        <pubDate>Sat, 12 Dec 2009 09:24:17 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[We see granite everywhere.  We see it as counter tops in many kitchens...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/how-far-down-does-granite-go-into-earth-123059</link>
        <description><![CDATA[We see granite everywhere.  We see it as counter tops in many kitchens and we see it as flooring in many homes.  Granite can be used indoors or outdoors because it is so resistant to cracking, scratching, staining, or burning.  Granite is an intrusive rock that begins as a molten mass. Most scientists and Geologists agree that it forms 25 to 40 Kilometers below the earth’s surface.  It is an igneous rock and is formed over time from the...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/how-far-down-does-granite-go-into-earth-123059</guid>
        <pubDate>Sat, 12 Dec 2009 08:01:11 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[Rocks to a geologist are like a map to a traveler.  By studying rocks...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/why-important-study-rocks-123157</link>
        <description><![CDATA[Rocks to a geologist are like a map to a traveler.  By studying rocks scientists have been able to learn much about a planet. They provide clues to our planet's past from which certain conclusions can be drawn and predictions can be made.  The rock cycle is as important to the well being of our environment as the water cycle.  The breakdown and layers found in rocks are able to tell scientists the weather/ climate patterns of previous...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/why-important-study-rocks-123157</guid>
        <pubDate>Fri, 11 Dec 2009 07:20:34 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[From a scientific point of view, rocks are essential trace fossils.  A...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/why-important-study-rocks-123157</link>
        <description><![CDATA[From a scientific point of view, rocks are essential trace fossils.  A trace fossil is a type of imprint that reflects an animal's behavior.  Some of this behavior is imprinted on fossilized rocks. In this respect, rocks become a record of time, something that can be used to construct understandings of the past, conceptions of how things were, and help to bridge the idea of who we were to who we are.  The use of fossilized rocks tells us...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/why-important-study-rocks-123157</guid>
        <pubDate>Fri, 11 Dec 2009 03:54:00 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[Good question. Why would anyone study rocks? Well, if we probe a little...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/why-important-study-rocks-123157</link>
        <description><![CDATA[Good question. Why would anyone study rocks? Well, if we probe a little deeper, there are some reasons why people should study rocks.
When people want to learn about the past, they are immediately handicapped, because the past does not always leave records of what it was like. So, scientist and historian need to use whatever there is. In some cases, the only thing to study is rocks. And if a person studies these rocks and compares these rocks...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/why-important-study-rocks-123157</guid>
        <pubDate>Thu, 10 Dec 2009 22:13:18 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[If you're talking about why it's important for someone in high school to...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/why-important-study-rocks-123157</link>
        <description><![CDATA[If you're talking about why it's important for someone in high school to study rocks, I'd say it's because you need to be exposed to a little of everything (in terms of academic subjects) in high school.  When I was in high school, at least, I had no idea what I wanted to do or be.  Studying a little bit of everything at least gave me some ideas about that.
It's also nice to know at least something about a lot of things just for your own...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/why-important-study-rocks-123157</guid>
        <pubDate>Thu, 10 Dec 2009 21:52:52 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[Why is it important to study rocks?]]></title>
        <link>http://www.enotes.com/geology/q-and-a/why-important-study-rocks-123157</link>
        <description><![CDATA[Why is it important to study rocks?]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/why-important-study-rocks-123157</guid>
        <pubDate>Thu, 10 Dec 2009 21:45:51 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[How far down does granite go into the earth?]]></title>
        <link>http://www.enotes.com/geology/q-and-a/how-far-down-does-granite-go-into-earth-123059</link>
        <description><![CDATA[How far down does granite go into the earth?]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/how-far-down-does-granite-go-into-earth-123059</guid>
        <pubDate>Thu, 10 Dec 2009 16:46:30 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[Dr. Harry Hess proposed the theory for sea floor spreading.  I did a...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/according-theory-dr-hess-what-nine-layers-earth-121863</link>
        <description><![CDATA[Dr. Harry Hess proposed the theory for sea floor spreading.  I did a major college research paper on plate tectonics theory and had found only four layers for the earth.  These being the inner core, outer core, mantle, and crust.   However, the mantle and crust can be subdivided.
As shown on the chart in the link,  the depths are as follows:
Lithosphere     0- 37 miles
Crust                0-22 miles
Upper...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/according-theory-dr-hess-what-nine-layers-earth-121863</guid>
        <pubDate>Mon, 7 Dec 2009 07:36:24 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[According to the theory of Dr. Hess, what are the nine layers of the earth]]></title>
        <link>http://www.enotes.com/geology/q-and-a/according-theory-dr-hess-what-nine-layers-earth-121863</link>
        <description><![CDATA[According to the theory of Dr. Hess, what are the nine layers of the earth]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/according-theory-dr-hess-what-nine-layers-earth-121863</guid>
        <pubDate>Mon, 7 Dec 2009 02:22:16 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[It is called diagenesis. Diagenesis occurs in several stages. First,...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/sandstone-siltstone-shale-120809</link>
        <description><![CDATA[It is called diagenesis. Diagenesis occurs in several stages. First, compaction happens as the particles are pressed together by the increasing weight of what is above. The size of the spaces between is reduced, and water is forced out. As new minerals fill in the remaining space, cementation occurs, and particles bind together. Further steps can occur later, if compression continues and the rock hardens further. The below link is a good...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/sandstone-siltstone-shale-120809</guid>
        <pubDate>Wed, 2 Dec 2009 19:00:01 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[Sandstone, siltstone, shale.]]></title>
        <link>http://www.enotes.com/geology/q-and-a/sandstone-siltstone-shale-120809</link>
        <description><![CDATA[Sandstone, siltstone, shale.]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/sandstone-siltstone-shale-120809</guid>
        <pubDate>Wed, 2 Dec 2009 18:23:10 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[explain the similarities between ocean circulation and atmospheric...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/explain-similarities-between-ocean-circulation-120757</link>
        <description><![CDATA[explain the similarities between ocean circulation and atmospheric circulation ?]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/explain-similarities-between-ocean-circulation-120757</guid>
        <pubDate>Wed, 2 Dec 2009 16:16:50 PST</pubDate>
    </item>
    <item>
        <title><![CDATA[The Tropic of Cancer is the latitude  23° 26′ 22″ degrees North of...]]></title>
        <link>http://www.enotes.com/geology/q-and-a/how-many-degrees-separate-tropic-cancer-from-118619</link>
        <description><![CDATA[The Tropic of Cancer is the latitude  23° 26′ 22″ degrees North of the Equator and the Tropic of Capricorn is the latitude 23° 26′ 22″ South of the Equator. So, totally 46° 52' 44" separate the Tropic of Cancer from the Tropic of Capricorn.
However, to be very precise and accurate the position of both these latitudes is not fixed and varies in a very complicated manner over a period of time.
In the Tropics the sun reaches a point...]]></description>
        <guid>http://www.enotes.com/geology/q-and-a/how-many-degrees-separate-tropic-cancer-from-118619</guid>
        <pubDate>Tue, 24 Nov 2009 09:32:38 PST</pubDate>
    </item>
  </channel>
</rss>