Rocks & Minerals
This polymineralic, crystalline, igneous rock is known for its use as premier countertops and yard gravel.
A fracture in layers of rocks that has caused movement on one or both sides.
What is a fault?
The Period was known for its "Terrible Lizards" and the breakup of Pangaea.
What is the Jurassic?
Northeastern Arizona, 50,000 years ago, this location was scoured for a chunk of space rock,
What is Barringer Crater?
A mineral is an inorganic, naturally-occurring, solid with a definite chemical composition and crystal structure.
Fact
This monomineralic, crystalline, sedimentary rock has a variety of uses from deicing roads to sprinkling on your food.
What is Rock Salt?
A type of fold where the oldest rock lies in the middle of the fold.
What is an Anticline?
The Period starting ~408 million years ago when the first trees were taking root.
What is the Devonian?
1883. This island exploded violently and unleashed a devastating tsunami that wiped out thousands and shaped the planet's climate temporarily.
What is Krakatoa?
The Asthenosphere is the top-most layer of the Mantle and Crust.
This mineral, originally called "The Metal of Cyprus", became one of the most important minerals for an industrialized America due to its ductile, malleable form, and ability to conduct electricity.
What is Copper?
An accumulation of unsorted, unstratified sediment at the terminal/end, middle, or sides of a glacier.
What is a Moraine?
The Era of geologic time after the thunderous exit of the Dinosaurs and the rise of Mammals.
What is the Cenozoic?
April 18th, 1906. This bay in America was rocked by a magnitude 7.8 earthquake and followed by a destructive fire.
What is San Francisco?
Pahoehoe Lava consists of highly-viscous, cooler lavas while A'a consists of smooth, pillowy lavas that will flow easier.
Fiction. Reverse them.
This chemical sedimentary rock is entirely made of Chalcedony, and may form bands to create interesting formations like Waterline, or Fortification.
What are Agates?
A large, intrusive pluton which cools inside the Earth that stretches over 40 square miles.
What is a Batholith?
Now one of fifty states, this period of geologic time is best known for its many coal-forming swamps.
What is the Pennsylvanian?
This seismic zone in the middle of the United States had a historic quake in 1811-1812 that temporarily changed the flow of the Mississippi River.
What is the New Madrid Seismic Zone?
Lahars require heat in order to move.
Fiction. Lahars can move via rainfall or any landslide.
This opaque, cryptocrystalline, copper-based mineral is prolific throughout America's many indigenous tribes and is used extensively for jewelry.
What is Turquoise?
A large, tectonically-stable, low relief area of the Earth's crust that usually exposes Precambrian, crystalline rock.
What is a Shield?
Known as the final period of the Proterozoic Eon, it is best regarded for the earliest records of complex, multicellular, soft-bodied organisms like Jellyfish.
What is the Ediacaran?
245 million years ago, this event led to the extinction of many of the Permian's biota, making it the most severe extinction event in Earth's history.
What is the Siberian Traps?
Graphite and Diamond are made of the same element.
Fact