Retrogradation
In this article we are going to delve into Retrogradation, exploring its impact, importance and relevance in today's society. Retrogradation has been the subject of interest and debate for many years, and its influence can be seen in different areas of daily life. Throughout this article we will examine different perspectives and opinions on Retrogradation, with the aim of providing a complete and balanced view of this topic. Additionally, we will discuss how Retrogradation has evolved over time and how it continues to shape our lives today. Without a doubt, Retrogradation is a fascinating topic that deserves our attention and reflection, and we are sure that this article will give you an enriching insight into it.
Retrogradation is the landward change in position of the front of a river delta with time. This occurs when the mass balance of sediment into the delta is such that the volume of incoming sediment is less than the volume of the delta that is lost through subsidence, sea-level rise, and/or erosion. As a result, retrogradation is most common:
- during periods of sea-level rise which results in marine transgression. This can occur during major periods of global warming and the melting of continental ice sheets.
- with extremely low sediment input.
See also
- Progradation – Growth of a river delta into the sea over time
- River delta – Silt deposition landform at the mouth of a river
- Aggradation – Increase in land elevation due of the deposition of sediment
- Marine transgression – Geologic event in which sea level rises relative to the land
- Marine regression – Geologic event in which sea level falls relative to the land
- Sedimentology – Study of natural sediments and their formation processes
- Stratigraphy – Study of rock layers and their formation
- Sequence stratigraphy – Study and analysis of groups of sedimentary deposits
- Sediment transport – Movement of solid particles, typically by gravity and fluid entrainment
References
Schlumberger Oilfield Glossary
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