January 28 - MANTLE AND CRUST o (anorthosite 4.6) light...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
The Solar System Nebular Hypothesis - Direct/retrograde  Motion - Have a spin component to them, mutual gravitational attraction (towards  the sun)  - When the sun  started producing heat, most of the solar system is made out  of light material, and the only thing that crystallized in all that heat were  things with high melting points (closer to sun are rocky planets)  o At Jupiter, it freezes them  Planetary Geology - The Moon: what can you see? o Dark areas – MARIA o Light areas- HIGHALNDS o Craters—some very large  Moon Rocks - Igneous Rocks o Anorthosite:  4.7 billion years A ‘genesis’ rock, from the beginning of the earth  o Basalt: 3.8-3.2 billion years  - Impact Breccia: 3.9 billion years  o When you look at it, there are pieces of other rocks  o Happened when meteorites hit the rocks and were heated, then they  weld/stick together  o Caused rocks to break up  Lunar History - 4.6 billion years ago, MOON FORMS AND SEPARATES INTO CORE, 
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: MANTLE AND CRUST o (anorthosite 4.6) light minerals that float to the top and form the crust -3.9: LARGE IMPACTS FORM MARE BASINS (lunar breccias 3.9)-3.8-3.2: BASALT ERUPS IN BASINS (age of lunar basalts)-3.2 present: LITTLE ACTIVITY Mercury-Temperature : +427 C to -173 C o Hot, close to the sun o Not the hottest planet, b/c has no atmosphere o Radiational cooling o Most difference in daytime high/nighttime low -Same size as moon, looks like moon , similar to the moon Venus-Earths sister planet (in size)-Carbon dioxide atmosphere, 90 X the Earths-+ 480 Chottest planet o Can melt metal on its surface Mars-Thin atmosphere, mostly CO2, enormous ancient volcanoes, evidence of wind and water-MOST earth-like planet, in terms of surface conditions...
View Full Document

Page1 / 2

January 28 - MANTLE AND CRUST o (anorthosite 4.6) light...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online