Images for part 1 of the Geologic features of Mars Activity: Images of Earth

Section 1: Volcanoes

Radar image of the Galapogos from the shuttle radar topography mission

Radar image of Galopogos Islands

Satellite view of Krakatau in Indonesia. The majority of the current island formed from the 1960 erruption. The most recent lava flows in this image are from 1996.

Krakatau Island, Indonesia

Mount Nyiragongo in the Democratic Republic of Congo July 3 2004, about a month after the May 2004 erruption. Gas and ash continued to escape for several months. A couple extinct caldera are also visible in this image.

Mount Nyiragongo post erruption


Yellowstone Park scarp formed by the leading edge of an ancient lava flow

Lava flow scarp

A graben formed by two faults in Yellowstone National Park. It is bounded by two scarps, which indicate the location of the fault lines.

Graben in Yellowstone

Two grabens separated by a horst. Note the difference in scale between this and the previous image (there is a person on the left to help with scale.)

Two grabens and a horst

A heavily erroded graben

A heavily erroded graben

Gradation by Water

Illinois and Indiana: tributaries of the Mississippi

Southern Illinois and Indiana with Mississippi tributaries

Tributaries from the Andes in Huaraz, Peru. Their shape and position is determined by the mountains (tectonics)

Tributaries in Peru

The Grand Canyon and surrounding area. Note the volcanoes in the grey area to the left, which probably forced the change in the course of the river.

The Mississippi River delta. Lake Pontchartrain is on the left and New Orleans is the grey area below it. The Mississippi continues well out into the gulf in this image from 2001.

Mississippi delta

Alluvial fan in death valley.

Gradation by Gravity

slumping along a scarp

Impact Cratering

Barringer Crater, Arizona

Manicougan Crater, Quebec, Canada (this is a red-blue sterioscopic image - use 3-D glasses to see depth)

A region near the north pole of the Moon. This image was included to show distinct differences between young and old craters. Note espcially the large well worn crater near the center and the smaller crater with the central peak near the left side.