Final answer:
A sea stack is the result of erosional processes. Identifying deposition patterns through sequence stratigraphy involves studying clinoforms and sedimentary features like cross-bedding to infer historic sea-level changes and depositional environments.
Step-by-step explanation:
Sea stack:
A sea stack is an erosional feature formed by the processes of weathering and erosion. It originates from headlands being battered by relentless wave action, which erodes the weaker portions of rock, leaving behind only the most resistant elements as a pillar rising above the sea level. Similarly, identifying age progression of deposition through clinoforms involves distinguishing between erosional and depositional sequences in stratigraphy, discerning younger surfaces and structures like gullies or cross-beds.The age progression of deposition can be identified by analyzing seismic images and identifying clinoforms, with the oldest being numbered as 1. An unconformity can indicate a break in the deposition sequence.
Onlapping patterns and sedimentary rocks like sandstones and shales with cross-bedding or ripple marks provide clues about depositional environments and sediment transport mechanisms.Sequence stratigraphy is a method that applies to understanding rock layers horizontally and is used to interpret historical changes in sea level, sediment deposition, and landscape evolution. Clinoforms are particular sedimentary structures indicative of such sea-level changes, represented by inclined strata pointing toward deeper ocean regions and are formed in different sea-level stand conditions.