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A key Early Paleozoic fossil group for which a "facies" is names is called carbon dioxide. water and sunlight. sunlight and sugar. x sugar and oxygen....

A key Early Paleozoic fossil group for which a “facies” is names is called



carbon dioxide.



water and sunlight.



sunlight and sugar.
x



sugar and oxygen.



water and carbon dioxide.

A continental shield is part of a (an)
Answer



depositional environment.



orogenic belt.



continental shelf.



craton.



continental platform.

A typical extrusive igneous rock with ferromagnesian minerals is called
Answer



diorite.



basalt.



andesite



granite.



gabbro.

The youngest Eon for which we have geological record is
Answer



Archean.



Cretaceous.



Holocene.



Proterozoic.



Quaternary.

Proterozoic climates were warm and arid at a high latitude as well as shown by
Answer



boulder deposits in the Gowganda.



limestone and dolomites in reeflike colonies.



red beds.



greenstone belts.



evaporite deposits.

The length of day near the end of Proterozoic was about
Answer



418 days.



418 hours.



20.4 days.



20.4 hours.



18.2 hours.

The orogen in the western margin of Slave province.
Answer



Wopmay



Keweenawan



Wilson



Levin



Labrador

During Early Paleozoic, Laurentia lay near
Answer



the North Pole.



the equator.



the South Pole.



45 degrees north.



45 degrees south.

The largest Early Paleozoic continent was
Answer



Kazakhstania.



Siberia.



Laurentia.



Gondwanaland.



Baltica.

This is an ancient geologically stable region in continental interior:
Answer



shield



platform



collisional orogen



province



subduction zone

A major mass extinction occurs at
Answer



543 million years.



416 million years.



251 million years.



66 million years.



4.6 billion years.

Clastic deposits of the Taconic orogeny in the eastern U.S. are called
Answer
x



Queenston clastic wedge.



Ouachita-Marathon trough.



Caledonian.



Cordilleran reefs.



Taconic highlands. - maybe

The European equivalent of the Appalachian Mountains are called
Answer



Taconic.



Acadian.



Caledonian.
x



Hercynian.



Alleghenian.

An example of a coarse clastic sedimentary rock with grains over 2 mm across is
Answer
x



rock gypsum.



shale.



limestone.



chalk.



conglomerate.

The Early Paleozoic ocean on the east side of Laurentia is called
Answer



Cordilleran.



Appalachian.



Siberian.



Caledonian.



Iapetus.

The Iapetus started closing during Early Paleozoic, thus initiating the first eastern-margin orogeny known as
Answer



Caledonain.



Taconic.



Acadian.



Antler.



Levinian.

A carbonate fossil that is rather rare in Archean rocks, but is much more common during Proterozoic is called
Answer



acritarchs.



eukaryotes.



prokaryotes.



stromatolites.



iron-reducing bacteria.

The Taconic orogeny occurred during
Answer
x



Cambrian.



Ordovician.



Silur



Devonian.



Permian.


An example of a marine environment of deposition is
Answer



glacial lake.



river channel.



continental shelf.



wind-blown dune.



alluvial fan.

A type of geologic evidence of past glaciation is called
Answer



paleomagnetism.



rock striations.



evaporites.



coal seams.



annual rings.

Select the vertical sequence that indicates regression.
Answer



shale over sandstone



limestone over conglomerate



sandstone over conglomerate



sandstone over shale



shale over conglomerate

This is composed mainly of Fe and Ni:
Answer



Earth’s core



Earth’s crust



ocean floor



continents



mantle

The geological principle that states that the oldest rock layer is at the bottom is
Answer



superposition.



original lateral continuity.



original horizontality.



cross-cutting relationships.



inclusions.

The Proterozoic supercontinent is called
Answer



Pangaea.



Gondwanaland.
x



Rodinia.



Laurasia.



Levinia.

Between the Cambrian Appalachian seaway and the Transcontinental arch was
Answer



Cordilleran seaway.



lowlands of the Canadian shield .



Franklinian seaway.



shallow, epicontinental sea.



sand deposition.

In Archean banded-iron formations, the red layer has a composition of
Answer



O2.



Fe2O3 and Fe3O4.



sulfides such as FeS2.



SiO2.



clay minerals.

The base of Cambrian strata is the top of
Answer



Paleoproterozoic.



Mesoproterozoic.



Neoproterozoic.



Paleozoic.



Mesozoic.

The Archean Eon ended
Answer



4.6 billion years ago.



3.8 million years ago.
x



2.5 billion years ago.



0.9 million years ago.



540 million years ago.

A geological period during Early Paleozoic is
Answer



Pennsylvanian.



Devonian.



Ordovician.



Mississippian.



Permian.

The 2,250 km-thick, liquid layer in the Earth is called the
Answer



asthenosphere.



outer core.



mantle.



crust.



inner core.

Metamorphic rock that forms from alteration of sandstone is
Answer
x



quartzite



marble



greenstone



slate



phyllite

A clastic rock made entirely of clay is
Answer



conglomerate.



siltstone.



andesite.



shale.



limestone.

The radiometric age of Cambrian rocks ranges from (million years)
Answer



542-488.



488-433.



433-416.



416-318.

Paleoproterozoic ‘ice age’ tillites and glacial lake deposits occur in this formation in the Superior Province.
Answer



Rocknest



Gowganda



Gunflint



Animikie





The age of the Grand Canyon Supergroup is
Answer



Paleoproterozoic.



Mesoproterozoic.



Neoproterozoic.



Paleozoic.

A large western basin that was active during Ordovician is called
Answer



Ouachita-Marathon trough.



Tuscarora.



Williston.



Shawanguk.



Queenston.

The shoreline deposits of the Caledonian orogenic belt are called
Answer



eurypterid facies.



graptolite facies.
x



shelly facies.



bentonite facies.



bioturbated facies.

The first stage in Wilson Cycle is
Answer



opening of an ocean basin.



sedimentation along the margins of separating continents.



closing of the ocean basin through plate tectonics.



onset of the glacial cycle.



formation of banded iron deposits.

This is NOT a province in Canadian Shield of North America.
Answer



Hearne



Superior



Slave



Nain



Levin

The Proterozoic Eon ends about
Answer



2,500 million years ago.



2,500 years ago.



542 million years ago.



542 years ago.



4.6 billion years ago.

A key Early Paleozoic fossil group for which a “facies” is names is called
Answer



graptolites.



conodonts.
x



fish.



land plants.



eurypterids.

Today, the Early Paleozoic continent of Baltica is part of
Answer



North America.



Russia.



China.



South America.



Africa.

The earliest known calcium carbonate, shell-bearing fossils are called
Answer



Cloudina.



Cyclomedusa.



Kimbrella.
x



Cnidarians.



Dickinsonia.

The first great transgression during the Early Paleozoic (began in Late Proterozoic) was
Answer



Kaskaskia.



Tippecanoe.



Sauk.



Absaroka.



Zuni.

These are ultra-high temperature, ultramafic volcanic rocks.
Answer



anorthosites



peridotites



komatiites



basalts



granites

Refers specifically to finding the order of ages among a sequence of rocks:
Answer



geochronology



relative age dating



actual age dating



absolute age dating



radioactive age dating

This fossil marks the Cambrian base.
Answer



Trichophycus



Cloudia



shelly multicellular forms



graptolites



conodonts

Select the formation below that contains the thickest outpouring of lavas.
Answer



Keweenawan



Gowganda



Gunflint



Duluth



Animikie

Upper Cambrian lithofacies characteristics of the U.S. mid-continent (east of the Transcontinental Arch) is
Answer



sandstone



carbonate



shale



siltstone

Formation rich in copper deposits is called
Answer



Keweenawan.



Gowganda.



Gunflint.



Duluth.



Animikie.

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