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Large amounts of volcanic rock erupted across Ethiopia and Yemen about 30 million years ago. These form the Afar Large Igneous Province and ...

Large amounts of volcanic rock erupted across Ethiopia and Yemen about 30 million years ago. These form the Afar Large Igneous Province and .

This diamond-shaped science figure is a QAPF diagram, used in geology to identify plutonic igneous rocks by name, based on the modal percentage of the component minerals Alkali Feldspar, Plagioclase, and Quartz or Feldspathoids!

This diamond-shaped science figure is a QAPF diagram, used in geology to identify plutonic igneous rocks by name, based on the modal percentage of the component minerals Alkali Feldspar, Plagioclase, and Quartz or Feldspathoids.

6.8 Earthquake. 2001. Olympia, Washington.    The effects of an earthquake on a sand-tracing pendulum, discovered by Jason Ward.    Seismologists say that the “flower” at the center reflects the higher-frequency waves that arrived first; the outer, larger-amplitude oscillations record the lower-frequency waves that arrived later.

sun-shower

The Earthquake Rose: When a magnitude earthquake shook Olympia, Wash., in shopowner Jason Ward discovered that a sand-tracing pendulum had recorded the vibrations in the image above… Read more (via Futility Closet)

Перелом Leisegang Контроль Колец, Уайдмут, Корнуолл

Fracture Control Liesegang Rings, Widemouth, Cornwall by Richard Childs Photography

Moqui Marbles, naturally occurring iron oxide concretions that arise from navajo sandstone.  Address: Utah 84737  Amazing Geologist

Moqui Marbles, naturally occurring iron oxide concretions that arise from navajo sandstone. Very prevalent in the Escalante Grand Staircase National Monument - wonderful shapes and color.

Timeline of the San Andreas fault, showing the subduction of the Farallon and Pacific Plates by the North American Plate over the last 30 million years.

Knowledge empowers: "Timeline of the San Andreas fault, showing the subduction of the Farallon and Pacific Plates by the North American Plate over the last 30 million years.

The Paleontology Portal

Tethys Ocean - The Tethys Ocean was an ocean that existed between the continents of Gondwana and Laurasia during much of the Mesozoic era, before the opening of the Indian and Atlantic oceans during the Cretaceous period.

Plan view of the San Francisco volcanic field with cross section of Colorado Plateau.

Plan view of the San Francisco volcanic field with cross section of Colorado Plateau.

Know        Kaibab Limestone

The          Toroweap Formation

Canyon’s      Coconino Sandstone

History     Hermit Shale

Study      Supai Formation

Rocks     Redwall Limestone

Made     Muav Limestone

By         Bright Angel Shale

Time         Tapeats Sandstone

         & the Vishnu Schist

Kaibab Limestone The Toroweap Formation Canyon’s Coconino Sandstone History Hermit Shale Study Supai Formation Rocks Redwall Limestone Made Muav Limestone By Bright Angel Shale Time Tapeats Sandstone & the Vishnu Schist

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