Which dating method provides a relative age?
Natural EnvironmentsThe abundances of parent and daughter isotopes in a sample can be measured and used to determine their age. This method is known as radiometric dating. What are relative dating methods? In relative dating, we determine which things are older or younger based on their relationships. For example, we know from geology that soil layers
Which came first Rodinia and Pangea?
Regional SpecificsPangaea broke up about 250 million years ago and Rodinia about 760 million years ago. What came before Pangea? Between roughly 750 million and 550 million years ago these ocean basins were destroyed, and all the Precambrian nuclei of Africa, Australia, Antarctica, South America and India amalgamated into the supercontinent of Gondwana. What came after
What type of earthquake was the 1906 San Francisco earthquake?
Regional Specifics1906 San Francisco earthquake Ruins in the vicinity of Post and Grant Avenue Eureka Dunsmuir Chico Truckee Santa Rosa Salinas Bakersfield Fresno Paso Robles Santa Monica Indio Fault San Andreas Fault Type Strike-slip Areas affected North Coast San Francisco Bay Area Central Coast United States What type of fault is the San Andreas Fault? strike-slip
Who was Pickwick in the hiding place?
Regional SpecificsPickwick is a friend of the Ten Boom family. He is also a leader in the underground, and it is he who first connects the Ten Booms with the resources they need to help Haarlem’s Jews. Pickwick is a large, balding gentleman with a “vast stomach”. Who was Mr Pickwick in the hiding place? A
Where can I find Augite?
Regional SpecificsAugite is a rock-forming mineral that commonly occurs in mafic and intermediate igneous rocks such as basalt, gabbro, andesite, and diorite. It is found in these rocks throughout the world, wherever they occur. Augite is also found in ultramafic rocks and in some metamorphic rocks that form under high temperatures. Where are pyroxene found? In
What is the shape of the Kuiper Belt?
Regional SpecificsThe Kuiper Belt is a doughnut-shaped ring of icy objects around the Sun, extending just beyond the orbit of Neptune from about 30 to 55 AU. Is the Kuiper Belt spherical? The Kuiper belt is distinct from the theoretical Oort cloud, which is a thousand times more distant and is mostly spherical. Is the Kuiper