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26 Cards in this Set

  • Front
  • Back
The life expectancy for the average American is about __ hours. The approximate number of hours fromwhen we met to when we will part company will be __ hours. Think like a geologist and think about time.

700,000 hours;


2,600 hours;

Copernicus (mid 15th cent, Poland) Heliocentric -> Suddenly the universe is a bigger place.

Gallileo (1564-1642) Technology promotes scientific progress. Inertia: “Bodies in motion tend to stay in motion.” Convinced the earth was spinning and moving


Newton: Principia: the world operates by natural laws that make thingspredictable. He sat and wrote a three volume book that changed the world.

ok

When measuring patterns, the rock’smagnetic-alignment signature is enhancedby the Earth's modern magnetic field whenthe two coincide. The “trick” is that thepolarity patterns on both sides of thedivergent zones ARE THE ___.

SAME

Young and hot is the ___ boundaries

Divergent

Melted rocks are __.


Altered rocks through heat & pressure usually in a subduction zone are ___.


Rocks cut to pieces are ___.

Igneous;


Metamorphic;


Sedimentary;

Uniformitarianism – James Hutton: “Thepresent is the key to the past.” Corollary: “The past may be the key to thefuture.

ok

Storms are different in North and South. Northern storms come in ___.


Southern storms come in ___.

winter;


summer;

What are unintended consequences ofdamming up rivers and streams?

Beach erosion

you areflying through space riding on a ball of mostly molten liquid

k

There are volcanoes in CA. __ was the last to erupt.

Lassen's Peak;

Basalitic lava flows easily because it has low viscosity. This is because it has low level of silica.

k

Mt Saint Helen's is an andesitic volcano

k

LA Pulls water in from a lot of places and has created virtualwatershed. __% of water is imported.

88%

East African rift is a ___ margin.


Arabian penninsula is slamming or ___ into Iran.


Africa is squeezing into Eurasia.


Dead Sea in Jordan & Israel has ___ fault.


India ___ into Eurasia forming Himalayas.

Divergent;


Subducting;


Transform;


Collides;

Note blind faults/Buried reverse faults.

k

Bend in SAF creating ___ that is being distributedacross the TR areas. Relatively recent (geologically).

compression;

Sierra Nevada. The __ Side is the Steep Side and is Fault BoundedThe ___ side is gently sloping to the top

East; west;

Sierra Nevada is coupled with Death Valley. Mesozoic subduction. Recycling came out of ground from Andesitic volcanoes from back then. Asymmetric. Modern analog is Andes in Chile.

k

Rock dropping into the emplaced granitic composition magma. Breaks rule. Underlying rock is liquid. Massive volcanic rock coming up from below & shows on modern rocks.

Roof pendants

Sierra Nevada didn't happen at once. Over time.

k

___ are rocks carried by glaciers & left behind.

Glacial erratic;

___ is a tub full of sediments. Valley is forarc basin. SAF closed basin off.

Great Valley;

Marine environment dominated 15,000 mya all ocean water sediments go on it & SAF brought mountains & sealed off basin. Fresh water resulted. Limit to salt water.

k

High silica plug in middle of nowhere. These volcanic rocks obviously did not read the book because they aren't supposed to be here.

Sutter Buttes

Enclosed basin creates challenges. Dam all rivers doesn't flush so leaves behind salt so time ticking to grow stuff.

k

All of that oceanic-rock recycling means that the oldest rocks are found on the ___. oceanic rocks areall younger than 200 million years old

continents