RT Journal Article
T1 Condensation processes in shallow platforms
A1 Gómez Fernández, Juan José
A1 Fernández López, Sixto Rafael
AB Sequence stratigraphy allows elucidation of the time-space relationships of deposits in sedimentary basins.However, the relative distribution of unconformities and condensed sections can neither be used as diagnosticcriteria for particular palaeogeographic settings, nor as indicators of maximum regional transgressions. Condensationprocesses also occur in the shallowest portions of platforms and during maximum regression episodes. Threeseparate processes of condensation are here distinguished: stratigraphic, sedimentary and taphonomic. These threecategories of condensation can be used to analyze patterns of sediment distribution, and also to estimate lateral andvertical variations in sedimentation rates. Contrary to the usual interpretation, the maximum values of rate ofsedimentation and degree of accommodation of sediments, as well as the highest relative sea level, occur in thelowest levels of the shallowing-upward sequences. The distinction between these condensation processes allows oneto predict that the degree of sedimentary and stratigraphic condensation will be higher towards the distal portions ofthe platforms, whereas the stratigraphic condensation processes without sedimentary condensation will show themaximum intensity and frequency in the shallowest portions of the platforms.
PB Elsevier
SN 0037-0738
YR 1994
FD 1994
LK https://hdl.handle.net/20.500.14352/58485
UL https://hdl.handle.net/20.500.14352/58485
LA eng
DS Docta Complutense
RD 21 dic 2025