Recent Changes for "Geology" - Chico Wiki

Geology

RyanMikulovsky — 2010-01-08 08:52:50

paragraph for easy reading

Differences for Geology

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Geology

RyanMikulovsky — 2010-01-08 08:50:14

there's a page for that.

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- [[Image(lahar_and_river_conglomerate.jpg, thumbnail, 320, "River conglomerate (middle) and lahar (top and bottom) of the Tuscan Formation at ["Butte College"]'s ["Wild Life Refuge (Butte College)" Wild Life Refuge]", left)]]	+ [[Image(lahar_and_river_conglomerate.jpg, thumbnail, 320, "River conglomerate (middle) and lahar (top and bottom) of the Tuscan Formation at ["Butte College"]'s ["Butte College Wildlife Refuge" Wild Life Refuge]", left)]]

Geology

RyanMikulovsky — 2010-01-08 08:48:38

the map is very general

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- [[Image(Butte_Geology.png, thumbnail, 320, right, "Geologic Map of Butte County by ["Users/RyanMikulovsky"] using data from [http://www.usgs.gov US Geological Survey] and [http://www.census.gov US Census Bureau]. See below for PDF.")]]	+ [[Image(Butte_Geology.png, thumbnail, 320, right, "A Very Generalized Geologic Map of Butte County by ["Users/RyanMikulovsky"] using data from [http://www.usgs.gov US Geological Survey] and [http://www.census.gov US Census Bureau]. See below for PDF.")]]

Geology

RyanMikulovsky — 2008-08-15 21:44:58

Differences for Geology

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- [[Image(Butte_Geology.png, thumbnail, 320, right, "Geology of Butte County by ["Users/RyanMikulovsky"] using data from [http://www.usgs.gov US Geological Survey] and [http://www.census.gov US Census Bureau]. See below for PDF.")]]	+ [[Image(Butte_Geology.png, thumbnail, 320, right, "Geologic Map of Butte County by ["Users/RyanMikulovsky"] using data from [http://www.usgs.gov US Geological Survey] and [http://www.census.gov US Census Bureau]. See below for PDF.")]]

Geology

RyanMikulovsky — 2008-06-07 19:17:42

add spiffy map

Differences for Geology

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- [[Image(lahar_and_river_conglomerate.jpg, thumbnail, 320, "River conglomerate (middle) and lahar (top and bottom) of the Tuscan Formation at ["Butte College"]'s ["Wild Life Refuge (Butte College)" Wild Life Refuge]", right)]]	+ [[Image(Butte_Geology.png, thumbnail, 320, right, "Geology of Butte County by ["Users/RyanMikulovsky"] using data from [http://www.usgs.gov US Geological Survey] and [http://www.census.gov US Census Bureau]. See below for PDF.")]] +
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-	+ [[Image(lahar_and_river_conglomerate.jpg, thumbnail, 320, "River conglomerate (middle) and lahar (top and bottom) of the Tuscan Formation at ["Butte College"]'s ["Wild Life Refuge (Butte College)" Wild Life Refuge]", left)]]
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	+ == Geologic Map of Butte County == + * [[File(Geologic_Map_of_Butte_County.pdf)]] +

Geology

RyanMikulovsky — 2008-06-07 19:16:27

Upload of file Geologic_Map_of_Butte_County.pdf.

Geology

RyanMikulovsky — 2008-06-07 19:12:14

Upload of image Butte_Geology.png.

Geology

RyanMikulovsky — 2008-06-01 20:34:32

two links

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- The '''geology''' in and around ["Chico"] is unusually diverse. Chico sits right at the beginning of the Cascade range and near the end of the Sierra Nevadas. Within a short distance, you can see all sorts of interesting formations.	+ The '''geology''' in and around ["Chico"] is unusually diverse. Chico sits right at the beginning of the ["Cascade range"] and near the end of the ["Sierra Nevada Mountain Range" Sierra Nevadas]. Within a short distance, you can see all sorts of interesting formations.

Geology

RyanMikulovsky — 2008-04-18 22:57:00

ground water -> groundwater

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- It should be noted that Chico gets most (if not all) of its water from the lower portion of the Tuscan formation. Remember that it consists of layers, where the lower most layers are sandstone. Sandstone is quite porous and as such is perfect for storing water. This is why the ["Neal Road Landfill"] must use intricate methods to prevent toxins from infiltrating into the ground water. It's right on top of the Tuscan! Hydrologists (and geologists) must continuously monitor the quality of ground water around the landfill.	+ It should be noted that Chico gets most (if not all) of its water from the lower portion of the Tuscan formation. Remember that it consists of layers, where the lower most layers are sandstone. Sandstone is quite porous and as such is perfect for storing water. This is why the ["Neal Road Landfill"] must use intricate methods to prevent toxins from infiltrating into the groundwater. Hydrologists (and geologists) must continuously monitor the quality of ground water around the landfill.

Geology

RyanMikulovsky — 2008-04-18 21:23:55

add comments macro

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	+ + [[Comments]]

Geology

RyanMikulovsky — 2008-04-18 21:06:36

add a picture

Differences for Geology

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	+ [[Image(lahar_and_river_conglomerate.jpg, thumbnail, 320, "River conglomerate (middle) and lahar (top and bottom) of the Tuscan Formation at ["Butte College"]'s ["Wild Life Refuge (Butte College)" Wild Life Refuge]", right)]]

Geology

RyanMikulovsky — 2008-04-18 21:04:08

Upload of image lahar_and_river_conglomerate.jpg.

Geology

RyanMikulovsky — 2008-04-18 20:46:21

Differences for Geology

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- These strips are part of the ["Tuscan Formation"], which were formed approximately 2-4 million years ago[[Footnote(http://www.csuchico.edu/atec/projects/tigers/site/formations/tuscan.html)]] by successive volcanic mud flows or [http://landslides.usgs.gov/learning/glossary.php#l lahars]. Lahars typically occur when a volcano erupts causing snow to melt. This mud flow accumulates volcanic rocks along the way, eventually depositing onto the valley floor (typically following river valleys). The mud then hardens around the even harder [http://volcanoes.usgs.gov/Products/Pglossary/VolRocks.html volcanic (igneous) rocks]. Over a very long span of time, the hardened mud is weathered away, leaving behind those rocks -- this is a concept known as [http://landslides.usgs.gov/learning/glossary.php#w differential weathering]. Thus, the boulders you see on the way towards Chico used to be part of a much larger "rock". So if you've ever heard that a volcano (such as ["Mount Lassen"]) ejected all those boulders, now you know the truth. In fact, the size of those freed boulders make it highly improbable as an outlandishly large force would be required over such distances. And if that were the case, wouldn't the boulders be scattered everywhere and not along roughly parallel strips?	+ These strips are part of the ["Tuscan Formation"], which were formed approximately 2-4 million years ago[[Footnote(http://www.csuchico.edu/atec/projects/tigers/site/formations/tuscan.html)]] by successive volcanic mud flows or [http://landslides.usgs.gov/learning/glossary.php#l lahars]. Lahars typically occur when a volcano erupts causing snow to melt. This mud flow accumulates volcanic rocks along the way, eventually depositing onto the valley floor (typically following river valleys). The mud then hardens around the even harder [http://volcanoes.usgs.gov/Products/Pglossary/VolRocks.html volcanic (igneous) rocks]. Over a very long span of time, the hardened mud is weathered away, leaving behind those rocks -- this is a concept known as [http://landslides.usgs.gov/learning/glossary.php#w differential weathering]. Thus, the boulders you see on the way towards Chico used to be part of a much larger solid mass. So if you've ever heard that a volcano (such as ["Mount Lassen"]) ejected all those boulders, now you know the truth. In fact, the size of those freed boulders make it highly improbable as an outlandishly large force would be required over such distances. And if that were the case, wouldn't the boulders be scattered everywhere and not along roughly parallel strips?

Geology

RyanMikulovsky — 2008-04-18 20:39:57

Differences for Geology

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- These strips are part of the ["Tuscan Formation"], which were formed approximately 2-4 million years ago[[Footnote(http://www.csuchico.edu/atec/projects/tigers/site/formations/tuscan.html)]] by successive volcanic mud flows or [http://landslides.usgs.gov/learning/glossary.php#l lahars]. Lahars typically occur when a volcano erupts causing snow to melt. This mud flow accumulates volcanic rocks along the way, eventually depositing onto the valley floor (typically following river valleys). The mud then hardens around the even harder [http://volcanoes.usgs.gov/Products/Pglossary/VolRocks.html volcanic (igneous) rocks]. Over a very long span of time, the hardened mud is weathered away, leaving behind those rocks -- this is a concept known as [http://landslides.usgs.gov/learning/glossary.php#w differential weathering]. Thus, the boulders you see on the way towards Chico used to be part of a much larger "rock". So if you've ever heard that a volcano (such as ["Mount Lassen"]) ejected all those boulders, now you know the truth. In fact, the size of those freed boulders make it highly improbable as an outlandishly large force would be required. And if that were the case, wouldn't the boulders be scattered everywhere and not along roughly parallel strips?	+ These strips are part of the ["Tuscan Formation"], which were formed approximately 2-4 million years ago[[Footnote(http://www.csuchico.edu/atec/projects/tigers/site/formations/tuscan.html)]] by successive volcanic mud flows or [http://landslides.usgs.gov/learning/glossary.php#l lahars]. Lahars typically occur when a volcano erupts causing snow to melt. This mud flow accumulates volcanic rocks along the way, eventually depositing onto the valley floor (typically following river valleys). The mud then hardens around the even harder [http://volcanoes.usgs.gov/Products/Pglossary/VolRocks.html volcanic (igneous) rocks]. Over a very long span of time, the hardened mud is weathered away, leaving behind those rocks -- this is a concept known as [http://landslides.usgs.gov/learning/glossary.php#w differential weathering]. Thus, the boulders you see on the way towards Chico used to be part of a much larger "rock". So if you've ever heard that a volcano (such as ["Mount Lassen"]) ejected all those boulders, now you know the truth. In fact, the size of those freed boulders make it highly improbable as an outlandishly large force would be required over such distances. And if that were the case, wouldn't the boulders be scattered everywhere and not along roughly parallel strips?

Geology

RyanMikulovsky — 2008-04-18 20:38:25

a beginning that may need to be split into different pages one day.

Differences for Geology

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	+ The '''geology''' in and around ["Chico"] is unusually diverse. Chico sits right at the beginning of the Cascade range and near the end of the Sierra Nevadas. Within a short distance, you can see all sorts of interesting formations. + + == Abundant Boulders == + Someone driving north towards Chico on ["Highway 99"] may be struck by the number and size of boulders strewn about. To the sharp observer, they appear to occur in strips, alternating between zones of rocks and grassland. Why? + + These strips are part of the ["Tuscan Formation"], which were formed approximately 2-4 million years ago[[Footnote(http://www.csuchico.edu/atec/projects/tigers/site/formations/tuscan.html)]] by successive volcanic mud flows or [http://landslides.usgs.gov/learning/glossary.php#l lahars]. Lahars typically occur when a volcano erupts causing snow to melt. This mud flow accumulates volcanic rocks along the way, eventually depositing onto the valley floor (typically following river valleys). The mud then hardens around the even harder [http://volcanoes.usgs.gov/Products/Pglossary/VolRocks.html volcanic (igneous) rocks]. Over a very long span of time, the hardened mud is weathered away, leaving behind those rocks -- this is a concept known as [http://landslides.usgs.gov/learning/glossary.php#w differential weathering]. Thus, the boulders you see on the way towards Chico used to be part of a much larger "rock". So if you've ever heard that a volcano (such as ["Mount Lassen"]) ejected all those boulders, now you know the truth. In fact, the size of those freed boulders make it highly improbable as an outlandishly large force would be required. And if that were the case, wouldn't the boulders be scattered everywhere and not along roughly parallel strips? + + Earlier it was mentioned that lahars tend to follow river valleys. This is quite true of the flows that flank Chico. If you have ever explored a butte or the formations at ["Upper Bidwell Park"], you may well notice alternating layers. There are layers of smooth rounded rocks (conglomerate) and solid mud with sharp, angular volcanic clasts (breccia). Most people know that river rocks are round and quite smooth. Thus, just by using a bit of common sense, one can conclude that the lahars did flow in river valleys -- repeatedly. + + It should be noted that Chico gets most (if not all) of its water from the lower portion of the Tuscan formation. Remember that it consists of layers, where the lower most layers are sandstone. Sandstone is quite porous and as such is perfect for storing water. This is why the ["Neal Road Landfill"] must use intricate methods to prevent toxins from infiltrating into the ground water. It's right on top of the Tuscan! Hydrologists (and geologists) must continuously monitor the quality of ground water around the landfill. + + == Gold! == + + == The Lovejoy Basalt ==