The exercises using outcrops indicate how:
• Outcrops are the ultimate ground truth to the correlation of ParaSequence
• Major Surfaces that include Transgressive Surfaces (TS), Maximum Flooding Surfaces (mfs), and Sequence Boundaries (SB) facilitate this process.
• Stacking Patterns of ParaSequence
s help determine the continuity of the reservoir quality & depositional setting of the sediments they bound.
• The high-frequency "cycle" or "ParaSequence
" is the smallest set of genetically related facies deposited during a single base-level cycle.
• Cycle Boundaries mark the turnaround from base-level fall to base-level rise (a period of time during which sea level rises from a highstand position, through a lowstand, and returns to a highstand).
• Cycles can be mapped across multiple Facies Tracts and include multiple Vertical Facies Successions (VFS) and chronostratigraphic units (Kerans & Tinker, 1997 and Mitchum & Van Wagoner, 1991).
• The commonest ParaSequence
is the shoaling upward cycle, with finer deeper water facies at their base and coarser better-sorted facies towards their top.
Sets identified in outcrop can be used to identify potential acquifers, aquicludes, hydrocarbon source rocks, reservoirs and seals.