Important: Sequence stratigraphy is concerned with the relative rates of change in sea level and sedimentation, not the position of sea level per se. Consequently, the plots below indicate the rate of change in sea level, not the position of sea level. The horizontal gray line indicates a zero rate of change, and when the blue relative sea-level line lies above this gray line, sea level is rising. As the blue curve climbs upward, sea level is rising more quickly, and as the blue curve descends towards the gray line, sea level is still rising but at ever slower rates of rise. The opposite is true when the blue curve lies below the gray line: as the blue curve falls below the gray line, sea level is falling at progressively faster rates, and as the blue curve rises toward the gray line, sea level is falling, but at ever slower rates. The brown line indicates sediment supply, which is maintained at always-positive rates, indicating that topography and climate are sufficient to supply sediment continuously. Although sedimentation supply is shown as a constant here, this is not a requirement; it just makes explaining the concepts of sequence stratigraphy easier. Remember, these curves show the rate of change in sea level, not the position of sea level.
Important: Sequence stratigraphy is concerned with the relative rates of change in sea level and sedimentation, not the position of sea level per se. Consequently, the plots below indicate the rate of change in sea level, not the position of sea level. The horizontal gray line indicates a zero rate of change, and when the blue relative sea-level line lies above this gray line, sea level is rising. As the blue curve climbs upward, sea level is rising more quickly, and as the blue curve descends towards the gray line, sea level is still rising but at ever slower rates of rise. The opposite is true when the blue curve lies below the gray line: as the blue curve falls below the gray line, sea level is falling at progressively faster rates, and as the blue curve rises toward the gray line, sea level is falling, but at ever slower rates. The brown line indicates sediment supply, which is maintained at always-positive rates, indicating that topography and climate are sufficient to supply sediment continuously. Although sedimentation supply is shown as a constant here, this is not a requirement;มันแค่ทำให้การอธิบายแนวคิดของลำดับลำดับชั้นได้ง่ายขึ้น จำได้ว่า เส้นโค้งเหล่านี้แสดงอัตราของการเปลี่ยนแปลงระดับน้ำทะเล ไม่ใช่ตำแหน่งของระดับน้ำทะเล
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