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 Published by the American Geological Institute
February 2001
Newsmagazine of the Earth Sciences

Where on Earth?
Do you have slides and photos you've collected from field work or vacations?
Every month, we'd like to feature one of your photos from anywhere in the world and invite other readers to guess where it was taken. Look every month in the print Geotimes for a new photo. Following are clues, answers and winners from past issues.

Our contest rules have changed! Starting in March, the first 10 readers to identify the location pictured in the current print version of Geotimes receive a Where on Earth? T-shirt. From these 10 winners we will draw the names of the two respondants who will receive a Brunton 8099 EclipseTM compass. Please note that all contestants are eligible to win one compass per year and a maximum of three T-shirts per year.

Click here to submit a guess for this month's Where on Earth? contest.
(Photo and clues for the current contest are available in the print version only)

Submit photos for Where on Earth?

Answers to the January and December  photo contests:
Archive of old answers

January clues & answer:

Laura Wright
1.  The only nearby town of any size was named for an Englishman who explored this still sparsley populated region in 1839 while aboard a ship named after a breed of dog.

2.  In the bottom left corner of this photograph, taken during the region's dry season, is the top of a waterfall that is one of the many that cascade from this 500-kilometer-long 1.6 billion-year-old quartz sandstone cliff.

3.  The land shown here is a national park but not owned by the national government: It is leased from the native people who have inhabited the region for more than 40,000 years.

Scroll down for the answer  ...

The cliff pictured here is the Arnhem Land Escarpment in the Northwest Territory of Australia.

January winners:

Donald Brobst Virginia
Allyson Mathis Arizona
David Adilman Massachusetts
Cecile De Rouin Massachusetts
Mauri Pelto Massachusetts
John Elder Washington
Rob Viens Washington
Sandra Staff California
Christie O'Day Arizona
Jeff Ritchie Texas


1.  These photos were taken within minutes of each other, illustrating a geologic oddity found in only two or three other places on Earth.

2.  The spring, issuing from nearly vertical limestone beds, supplies drinking water for a nearby town in a valley named for an astronomical object.

3.  The mountains to the north began forming 6 to 9 million years ago when a trap-door fault swung open. The fault's vertical displacement is estimated at 9,000 meters, and counting.

Photos by Jim Sukup, Carmel, Ind.

Scroll down for the answer  ...

Periodic Spring, or Intermittent Spring, near Afton, Wyo.

December winners:

Pete Folger Washington, D.C.
Doug Medville Reston, Va.
Ron Hallum Chula Vista, Calif.
Ron Pozun Warm Springs, Va.
Melody Holm Lakewood, Colo.
Chuck Weisenberg Lakewood, Colo.
Susan Landon
Stephen Lee Newbury, Calif.
Gretchen Hurley Thermopolis, Wyo.
Ray Petrun Soda Springs, Idaho