| 1 |
The events we need to know in order to explain Rib Mountain took place roughly how long ago:
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2,000 years |
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2,000,000 years |
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200,000,000 years |
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2,000,000,000 years |
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we have no clue |
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| 2 |
What terms best describe the rock that comprises Rib Mountain and its monadnock neighbors: |
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granite, volcanic |
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syenite, pluton |
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quartzite, volcanic |
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quartzite, metamorphic |
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| 3 |
The "Wausau Pluton" (the Wausau Insurance hill) is composed of:
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syenite, intrusive |
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granite, batholith |
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syenite, volcanic |
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quartzite, metamorphic |
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| 4 |
A "monadnock" is: |
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a type of volcano, similar to a cinder cone |
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an exhumed batholith, such as the Granite Heights batholith north of Wausau |
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a piece of a caldera, such as Crater Lake (Mt. Mazama) |
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an isolated mountain composed of resistant material in an area of low relief |
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| 5 |
The highest point of elevation above sea level in Wisconsin is: |
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Timm's Hill |
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The West Bluff of Devil's Lake Gorge |
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Roche a Cri |
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The Friendship Mound in Adams Friendship |
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Rib Mountain |
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| 6 |
The mountain chain that existed in Proterozoic time in this region of the world has been called the: |
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Pangean Mountains |
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Pearson Mountains |
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Penokean Mountains |
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Baraboo Mountains |
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| 7 |
As applied to Marathon County, the best description of the method developed by James Hutton as the foundation of modern historical geology is: |
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things have always been as they are now in Marathon County, so we have to work this back into the past to arrive at how things were then (the principle of extrapolation. |
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we can begin to know how things were in the past in Marathon County by studying the processes that are presently forming similar rocks elsewhere in the world today |
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nothing much is happening now in Marathon County, so we can best think of all that happened in the past as being part of a period of catastrophe and cataclysm |
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Hutton's principal of uniformitarianism doesn't apply to our study of Marathon County because the events happened so long ago -- it only applies to what is happening now. |
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both "c" and "d" are correct |
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| 8 |
A "xenolith" is: |
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a fragment of pre-existing rock (such as the Rib Mountain quartzite) incorporated into an igneous intrusion |
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the type of metamorphic rock of which Rib Mountain is composed |
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a rock brought into the U.S. from another country for further study |
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an igneous rock, similar to granite |
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| 9 |
The talus on the south slope of Rib Mountain: |
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presumably was produced by mechanical weathering of some sort |
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is typical of talus in that it consists of angular fragments |
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is of a size and shape that reflects the natural jointing or fracturing present in the quartzite |
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all of the above (a, b, and c) |
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none of the above -- it was produced by glacial erosion |
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| 10 |
Which of the following rocks in Marathon County provides evidence of a former deep ocean basin in this region of the world: |
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granite from Ninemile Swamp |
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basalt from the Little Chicago area |
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rhyolite or andesite from Thom Field |
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Cambrian sandstone from HWY "C" |
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xenoliths in the Wausau Pluton syenite |
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| 11 |
Which of the following rocks in Marathon County contributes to evidence of a former subduction zone in this region of the world: |
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quartzite from Rib Mountain |
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basalt from the Little Chicago area |
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rhyolite or andesite from Thom Field |
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Cambrian sandstone from HWY "C" |
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xenoliths in the Wausau Pluton syenite |
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| 12 |
The phenomenon that explains how formerly deep, intrusive rocks can now be found at the surface in Marathon County is called: |
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Plate Tectonics
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Isostasy |
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Geomagnetism |
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Uniformitarianism |
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| 13 |
Over the past 3-4 hundred million years, which processes have dominated Marathon County: |
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"endogenous" tectonic forces, that have build up major mountain ranges |
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"exogenous" denudative processes such as glaciation, river erosion and weathering, that have broken down materials and redistributed them to lower elevations throughout the interior of the continent and the Gulf of Mexico |
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neither of the above -- it's been an exciting battle of the bruisers with "b" coming out on top |
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| 14 |
The collision that produced the Penokean Mountains: |
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also formed the Appalachians |
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happened as Pangea was breaking up, just like the Himalayas were forming at the same time |
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added to an Archaean supercontinent in Proterozoic time |
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is pure speculation |
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| 15 |
The great granite batholith that extends east from Marathon County over into Marinette County is called: |
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the Wausau Pluton |
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the Granite Heights bathloith |
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the Ninemile batholith |
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the Wolf River batholith |
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