知识分子
发表于 2025-3-28 14:55:39
Deep-Sea Stratigraphy: Cenozoic Climate Steps and the Search for Chemo-Climatic Feedbackted by periods of rapid change, or “steps”. These events may or may not be associated with the classical stratigraphic boundaries, some apparently are..There appear to be two extreme types of events: (1) those which represent accelerations of a given trend, depending on positive feedback from hydros
苍白
发表于 2025-3-28 20:51:07
Experiments on the Distinction of Wave and Current Influenced Shell Accumulationsiteria. This distinction will be important for the recognition of wave-generated storm coquinas. Extending on earlier studies about current orientations of isolated shells, the occurrence of a 2nd stable position is referred to higher current velocities.
清醒
发表于 2025-3-29 00:49:45
D2NE: Deep Dynamic Network Embedding limestone-marl sequences is difficult in many cases, but it can hardly be doubted that the time periods of Quaternary and older carbonate cycles coincide in their order of magnitude (20,000 to 100,000 years). This is also true for their sedimentation rate (0.5 to 3 cm/1000 years) which is controlle
袋鼠
发表于 2025-3-29 06:45:15
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原谅
发表于 2025-3-29 09:25:12
Advanced Data Mining and Applications clay content diminishes upward as mainly biogenic pelagic carbonate increases. Many lines of evidence suggest diminishing sedimentation rate, and decreasing water content of the sediment, from the bottom to the top of each cycle. Marine varves consisting mainly of alternating clay enriched and cocc