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Deposition of sediment with each new layer younger than the layer below is referred to as the princile of
In a sequence of rock layers we find fossils of trilobites and dinosaurs. The trilobite is at the bottom of he rock sequence in layer 1. The dinosaur fossil are found in layers 2, deiectly above the trilobite fossils. We conclude that
the processes of erosion have created a gap between the ages of the trilobite and the age of the dinosaur.
The scientific principle hat assumes that the different forms of animals throughout the Earth's past occurred in a definite order is called the principle of
The principle of faunal succession is based on the four assumptions of (1) the validity of the principle of superposition;
(2) the sequence of fossils are the same everywhere (3) rock layers of different ages will contain different types of fossils; and (4) the validity of the principle of original horizontality
The rather simple idea that,unless disturbed, younger sedimentary layerd overlie older layers, is referred to as the principle of
In a sedimentary rock that contains inclusions of metamorphic rock, the inclusions must be
older than the sedimentary rock
Radiocarbon datingis limited to the remains of plants and animals that died no longer than about
5700 years ago
If a radioactive element has a half-life of 704 million years, and the amount of parent material remaining is one-eighth of the original amount of parent material, the specimen is
2,112,000,000 years old
If the half-life of some radioactive element is 1 billion years, and a mass of rock originally contained 100 g of that element, how many grams of the radioactive element would be left after three billion years had passed
The climatic zones of Pangaea ranged from
glaciation in the south, and a mild temperate climate in the north
Ancient geologic processes as revealed in Paleozoic rock layers were
very similar to processes of erosion and sedimentation
Life first started to flourish on Earth with organisms that were easily preserved as fossils about
543 million years ago
The high concentration of iridium at the Cretaceous Tertiary boundary is most likely attributed to
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