2017-03-01T11:03:25ZThe definition of weathering is the gradual destruction of rock under surface conditions. Think of the Grand Canyon or other rock formations.
2017-03-01T11:03:25ZSalt is the only dietary mineral that's really a mineral. It comes from the sea and from solid layers underground.
2017-03-01T11:03:25ZSchematic map showing the locations and names of the world's mid-ocean ridges.
2017-03-01T11:03:25ZA short explanation of mechanical weathering.
2017-03-01T11:03:25ZSubduction occurs along convergent boundaries involving at least one oceanic plate. As the tectonic plates collide, one sinks below the other.
2017-03-01T11:03:25ZDikes are igneous or sedimentary intrusions that form in the pre-existing, vertical fractures of older rock.
2017-03-01T11:03:25ZErosion is a key concept in geology - what causes it and how does it shape the Earth's surface?
2017-03-01T11:03:25ZTransform boundaries or transform faults occur wherever the Earth's plates move past each other.
2017-03-01T11:03:25ZThe most widespread sedimentary rock type, despite its looks, is not a simple stone.
2017-03-01T11:03:25ZThe oceanic crust is much younger than the continental crust, rarely reaching more than 180 million years in age.
2017-03-01T11:03:25ZMinerals that are indicators of particular states of metamorphism.
2017-03-01T11:03:25ZRadioactivity and the barbecue model of dating.
2017-03-01T11:03:25ZLearn the basics of rocks and minerals, where to find them and what they mean in their context.
2017-03-01T11:03:25ZUnderstanding geologic maps starts with topography.
2017-03-01T11:03:25ZThe four eons and ten eras of the official geologic time scale.
2017-03-01T11:03:25ZThis map gives a detailed look at the boundaries, motions and hotspots of the world's major tectonic plates.
2017-03-01T11:03:25ZEverything you need to know about the lithosphere, including its composition, structure and thickness.
2017-03-01T11:03:25ZHow suites of certain minerals show the grade of metamorphism in a body of rock.