Help Search Campus Map Directories Webmail Home Alumnae Academics Admission Athletics Student Life Offices & Services Library & Technology News & Events About the College Navigation Bar
MHC Home Office of Communications
Title
SPRING 1999
VOLUME 3
NUMBER 4


Why Wait for Grad School?
Why Wait for Grad School?

Five, Six, Seven, Eight........Twenty!
Five, Six, Seven, Eight........Twenty!

Turning Mount Holyoke
Turning Mount Holyoke "Green"

News
Enjoying Garbage

Valley Arts
Valley Arts
It Came From Mars!
It Came From Mars!

Return to
Vista Home Page


Dots...

Geologist Darby Dyar is working with the geological equivalent of space aliens-meteorites that fell to Earth from Mars. And at 4.5 billion years old, they are millions of years older than the earliest known earth rock. "Of the thirteen known Martian meteorites, pieces of Ůve are here at Mount Holyoke," Dyar says.

How does she know they're from Mars? A glasslike layer reveals some rocks' extraterrestrial origin, as speeding through Earth's atmosphere melts, then cools, the rock's outer surface. And their Martian origin is conŮrmed by the composition of gases trapped inside the meteorites like air pockets in a loaf of bread.

Martian rocks contain many minerals common on Earth, which leads Dyar to conclude that "Earth and Mars formed by similar processes." Dyar studied moon rock samples for her doctoral dissertation, and her grand plan is to compare the geology of Earth and Mars rocks with asteroids and rocks from the Moon.

Holding a half-dollar-sized Martian meteorite in one palm, Dyar says, "From these little rocks, we're deducing how entire planets evolved." Two senior honors students, Maria Stefanis and Desiree Polyak, are over the moon about working with Dyar, one of the few scientists on the planet with access to chunks of Mars.

Photo by Fred LeBlanc




Home | Directories | Web Email | Calendar | Campus Map | Search | Help

About the College | Admission | Academics | Student Life | Athletics
Offices & Services | Giving | News & Events | Alumnae | Library & Technology

Copyright © 1999 Mount Holyoke College. This page created by Gravity Switch and maintained by Dan Wilga. Last modified on March 26, 1999.