| A | B |
|---|
| nebular hypothesis | Secular model suggesting that a star system forms slowly from a cloud of gas and dust (nebula) as the matter clumps together under the influence of the nebula's gravity. |
| stratum | A rock layer in a sequence of strata where Marine sedimentary strata are assumed to be laid down horizontally. |
| geologic column | Secular model of earth's geologic history classifying and arranging rocks in time periods of their supposed formation from 4.5 billion years ago to the present. |
| principle of superposition | Basic assumption that in any undistrubed sequence of rock strata, the oldest or first laid stratum is at the bottom of the sequence and the younger later layers placed above them. |
| diluvial geologic column | Creationary model of Earth's geologic history that classifies and arranges rocks in the sequence of their formation relative to biblical Flood. |
| tectonics | Forces, energy and processes that formed and reshaped the earth's continents, mountains, and ocean basins. |
| continental drift theory | Model explaining the shape and arrangement of present continents and their features as the product of tectonic plate slow motion over millions of years. |
| magma | Molten rock deep within the earth. |
| sea floor spreading | Motion of oceanic tectonic plates away from mid-ocean ridges where mantle rocks rise to form new ocean crust. |
| teconic plate | A section of the earth's crust that has tectonic boundaries and moves as a unit compared to other regions of crust. |
| subduction | Tectonic process where a relatively thin and denser oceanic crust slowly slides down and under more massive but less dense continental crust. |
| plate tectonics theory | Model suggesting Earth's crust is made of semi-rigid plates floating on plastic rocks in the mantle. Unifies all areas of secular geology today. |
| catastrophic plate tectonics | Uses Creation narrative to account for origination of earth's crust and existence of continents as well as tectonic features we see today. |
