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Uniformitarianism is defined in the authoritative Glossary of Geology as "the fundamental principle or doctrine that geologic processes and natural laws now operating to modify the Earth's crust have acted in the same regular manner and with essentially the same intensity throughout geologic time.

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In physics and systems theory, the superposition principle, also known as superposition property, states that, for all linear systems, the net response caused by two or more stimuli is the sum of the responses that would have been caused by each stimulus individually.

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Principle of superposition - Google Search

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Under certain conditions, living things can leave behind impressions of themselves in the form of fossils.

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Petrified wood is the name given to a special type of fossilized remains of terrestrial vegetation.

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A fossil trackway is a type of trace fossil, a trackway made by an organism.

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Footprints and Trackways Fossils - Google Search

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Fossil is an impression left by the original organism - mold

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Fossil is an impression left by the original organism - mold

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A mold is the impression and void that an organism or organism's body or body part leaves in the sediment

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Relative Dating of rock layers tells us that the deeper we dig, the older the rock gets.

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Relative Dating of rock layers tells us that the deeper we dig, the older the rock gets.

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History of rock and fossils - Geologic Time Scale

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History of rock and fossils - Geologic Time Scale

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Fossils are fundamental to the geologic time scale. Rocks formed during the Phanerozoic Eon may have fossils of complex animals and plants such as dinosaurs, mammals, and trees. We study Earth's history by studying the record of past events that is preserved in the rocks.

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How old is the Planet Earth - Paleontologist believe it is 4.6 Billion Years Old

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How old is the Planet Earth - Paleontologist believe it is 4.6 Billion Years Old

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Before analyzing the arguments advanced by creation “scientists” for a very young Earth, I here summarize briefly the evidence that has convinced scientists that the Earth is 4.5 to 4.6 billion years old.

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A bug stuck in amber - Preserved Remains

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A bug stuck in amber - Preserved Remains

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Even if fossils in amber are not useful for extracting dinosaur blood from for cloning purposes, despite what Jurassic Park may have you believe, they still preserve amazing snapshots of life millions of years ago. Amber is fossilized tree resin, a sticky, viscous substance secreted by plants in order to protect them from pests and predators.

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Sedimentary Rock - fossils forms in this layer.

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Sedimentary Rock - fossils forms in this layer.

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With the passage of time and the accumulation of more particles, and often with chemical changes, the sediments at the bottom of the pile become rock.

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law of superposition. noun. Geology. a basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.

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Eras - Paleozoic, Cenozoic, and Mesozoic.

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Eras - Paleozoic, Cenozoic, and Mesozoic.

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By using the basic principles of atmospheric circulation and analogies from present circulation patterns, it is possible to construct qualitative atmospheric circulation models on paleogeographic maps.

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By using the basic principles of atmospheric circulation and analogies from present circulation patterns, it is possible to construct qualitative atmospheric circulation models on paleogeographic maps. - Google Search

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Cenozoic - the time we are currently in.

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Cenozoic - the time we are currently in.

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The Cenozoic Era is the most recent of the three major subdivisions of animal history. The other two are the Mesozoic and Paleozoic Eras. The Cenozoic spans only about 65 million years, from the end of the Cretaceous Period and the extinction of non-avian dinosaurs to the present. The Cenozoic is sometimes called the Age of Mammals, because the largest land animals have been mammals during that time.

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Petrified fossils form when minerals replace all or part of an organism. Water is full of dissolved minerals. It seeps through the layers of sediment to reach the dead organism. When the water evaporates, only the hardened minerals are left behind.

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a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.