冬眠
发表于 2025-3-23 11:28:18
The SedimentBy studying sediments, we can learn about the origin of the material, the conditions of its transport and the characteristics of its environment of deposition. Observations can be made at different levels:
令人作呕
发表于 2025-3-23 13:59:47
Sedimentary EnvironmentsIn the reconstruction of ancient sedimentary environments, one uses information gathered both from fossils and from the sediment itself. From this one can visualise the infinite variety of environments which have occurred during the long history of the Earth. One can group these environments into a limited number of categories.
Infant
发表于 2025-3-23 18:29:49
The Ediacara FaunaAlthough it occurs outside Europe, the Ediacara fauna will be described here because it represents a fundamental stage in the history of life. As far as we know at present, it is the oldest example of a biotope.
声明
发表于 2025-3-24 00:05:40
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Pelvic-Floor
发表于 2025-3-24 03:01:52
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背景
发表于 2025-3-24 08:40:58
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Bmd955
发表于 2025-3-24 10:40:43
The Shores of the Auversian SeaAt the beginning of the late Eocene, in . or . . times, a marine transgression flooded the Paris Basin from the west. It formed a gulf which reached as far as Champagne to the east and which was separated from the Belgian basin by the Artois ridge. This sea was surrounded by a complex of lakes and lagoons (Fig. 124).
triptans
发表于 2025-3-24 15:28:56
Fossiliferous Horizonsthe exceptional state of preservation of the fossils. Fossil hunters find them very attractive, and for the geologist they are an unequalled source of information on ancient environments and can give great assistance in interpreting deposits of the same age which are less rich in fossils.
flourish
发表于 2025-3-24 20:48:07
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多样
发表于 2025-3-25 01:43:12
https://doi.org/10.1007/978-3-642-66247-8the exceptional state of preservation of the fossils. Fossil hunters find them very attractive, and for the geologist they are an unequalled source of information on ancient environments and can give great assistance in interpreting deposits of the same age which are less rich in fossils.