Sequence stratigraphy of Miocene tide-influenced sandstones in the Minas field, Sumatra, Indonesia by Brian J. Willis and Faizil Fitris
Thursday, July 12, 2012
Highlights
Many successions of interbedded tide-influenced sandstone
and marine shale include complex vertical and lateral facies patterns, and make
prediction of lateral variability challenging. Willis and Fitris
describe a detailed study of core, log, and seismic data from a Miocene
succession in Indonesia, that captures the nature of stratigraphic
heterogeneity. The results of this
study challenge the notion that sharp-based tidal-influenced sandstone bodies
are underlain by lowstand fluvial erosion surfaces and represent incised
valley-fill deposits. Instead,
this succession is interpreted to reflect a mix of regressive, transgressive,
and re-worked shelf deposits, but with trends that are constrained by the
sequence stratigraphic framework.
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