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I took Julie to see the Mammoth Earthquake Fault, and I was disappointed to discover that one can no longer climb down inside without crossing little fences. It used to be totally open.
Dalradian Quartzites form fault scarp against which Kingshouse Breccias have accumulated. Waterslide Slab, Buachaille Etive Mor.
The Wellington Fault in the Totara Park area of Upper Hutt.
The fault runs along the central reservation of the road in the background, and then through this reserve. Movement of the fault over time means that the land on right (NW) side is higher than that on the left (SE), forming this "scarplet".
Today's VIS image shows a small portion of the immense lava flows that originated from Arsia Mons. Arsia Mons is the southernmost of the three large aligned volcanoes in the Tharsis region. Arsia Mons' last eruption was 10s of million years ago. The different surface textures are created by differences in the lava viscosity and cooling rates. The lobate margins of each flow can be traced back to the start of each flow -- or to the point where they are covered by younger flows. Flows in Daedalia Planum can be as long as 180 km (111 miles). For comparison the longest Hawaiian lava flow is only 51 km (~31 miles) long. The total area of Daedalia Planum is 2.9 million square km – more than four times the size of Texas. A set of graben are also visible in this image. Graben are formed by extension of the crust and faulting. When large amounts of pressure or tension are applied to rocks on timescales that are fast enough that the rock cannot respond by deforming, the rock breaks along faults. In the case of a graben, two parallel faults are formed by extension of the crust and the rock in between the faults drops downward into the space created by the extension.
This martian scene spans 17 x 258 kilometers (11 x 160 miles). To see where on Mars this area lies, and to download high-resolution versions of the image go to themis.asu.edu/zoom-20241107a
See the Red Planet Report at redplanet.asu.edu for updates on Mars research and exploration. For more about Mars geology, check out the Mars-ePedia: marsed.asu.edu/marsepedia
For the latest THEMIS Mars images as received by mission scientists, see themis.asu.edu/livefrommars. To learn more about the THEMIS camera and its Mars images, see themis.asu.edu
This image is in the public domain and may be republished free of charge. If used, please credit it as NASA/JPL-Caltech/Arizona State University.
The Hayward Fault Exposed at Central Park, Fremont, California. Commemorate the 1906 San Francisco earthquake by standing face-to-face with an earthquake fault!
This fence atop the San Andreas fault, separated during the 1906 earthquake, when at this spot the earth moved 16 feet.
These calcite veins are within a complex fault zone in the Greenbrier Limestone, Greenbrier Co., WV. Outcrop is 1 mile west of Lewisburg on north side of I-64.
In 2013, Scripps research vessel New Horizon towed a hydrophone array to map the bathymetry of the Newport-Inglewood/Rose Canyon fault zone.
Fault, Istanbul, 2000.
Looped video 6 minutes. Fireproof coverall with internal videoprojection and sound.
Shot from a boat on the Bosporus, above the faultline between Asia and Europe. Both shores were filmed simultaneously with mirrors at 90 degrees in front of the lens. The rocking of the boat makes the continents rub against each other, like in an earthquake. East and West struggle to form one horizon.
While walking along the beach, I discovered a prominent fault exposed in the rocks along the buff. The sedimentary layers are offset with the thin-bedded grey shales on the left side dropping down in relation to the thick-bedded orange sandstone on the right side.
Here you can see the marks made by rocks sliding along a fault. These features, called slickensides, are polished striated rock surfaces caused by one rock mass moving across another on a fault. The quarter is there for scale.
Looking down toward the entrance of Arches National Park, a couple miles north of Moab. The Moab Fault runs along the road, and over the course of a few hundred thousand years, the cliffs on the near side of the road have sunk nearly 200 metres below the equivalent rock layers on the far side of the road.
While walking along the beach, I discovered a prominent fault exposed in the rocks along the buff. The sedimentary layers are offset with the thin-bedded grey shales on the left side dropping down in relation to the thick-bedded orange sandstone on the right side.