| 41. | No need to master the intricacies of stratigraphy or the history of plate tectonics.
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| 42. | Fossils of invertebrates are commonly used in stratigraphy.
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| 43. | His thesis treated of the mammals of the French lower Eocene and their stratigraphy.
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| 44. | Most of the Cambrian stratigraphy is based on the use of trilobite marker fossils.
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| 45. | One of the major achievements of 19th century archaeology was the development of stratigraphy.
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| 46. | Despite its complexity, these major tectonic stages were carefully preserved within its stratigraphy.
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| 47. | In modern stratigraphy, however, the name only applies to the stratigraphic unit.
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| 48. | These events likely caused disturbance of the stratigraphy.
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| 49. | Crevasse stratigraphy makes use of annual layers revealed on the wall of a crevasse.
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| 50. | There are numerous process that can reverse the stratigraphy or more accurately redeposit it.
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