GEOLOGY 101, SLIDE SHOWS
#0--PLANETS AND THE SOLAR SYSTEM

Joseph Hull

copyright Joseph Hull

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Photo captions are at the bottom of each photo.


Barringer Crater in Arizona, produced during impact of a meteorite.
Buildings on the crater rim for scale.  Bits of meteorites are found
in this crater.  Lots of energy expended during impact.


Ordinary metal-rich meteorite showing pock-marked surface.
This meteorite came from the asteroid belt between Mars and
Jupiter, and is the core of a small, broken up planet.


Metal-rich meterorite that has been sliced open,
the surface is then polished and then etched with
acid to reveal the internal structure.  Metal meteorites
are usually one big crystal/mineral with this nice internal
crystal pattern.


A slice through the meteorite called Allende.  This meteorite is
a carbon rich "chondrite", name for the chondrules or droplets
that are common in this meteorite.  The technician is pointing at
one at the end of the tweezers.  About 4.5 billion years old.


Large meteorites strike the surface of the Moon and Mars,
causing fragments of the lunar or martian crust to jet into space.
These fragments wander the Solar System: some eventually
come down to Earth (inset) and are discovered.  Much cheaper than
a manned mission to Mars!


A lunar meteorite in Antarctica with Swiss Army knife for scale.
Easy to spot on the surface of the glaciers.


A Martian meteorite, also found in Antarctica.  This bad boy has
been sawed in half. 


Photo of surface of a Martian meteorite, the photo is
a few microns across (very tiny).  Scientists at NASA claimed
that the "worm" in the center of the photo was a
fossilized Martian microbe:  NOT!
Your 15 minutes are up, guys.


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