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- W221803415 abstract "A study of 1,120 borehole records from Carboniferous coal-bearing rocks in a 160 square mile area in southeastern Kentucky shows that within a stratigraphic interval of about 2,000 feet, the major lithic components are coarsening-upward sequences and coal groups. The latter are groups of rocks averaging 120 feet in thickness which include coal, thin mudstone and sandstone of channel or splay origin. The coarsening-upward sequences, which consist of mudstone overlain by sandstone, are of two types, one that is thick (mean thickness 170 feet/52 m) and very widespread and the other thin (mean thickness 70 feet/21 m) and has only local distribution. Variogram and trend surface procedures were used to characterize the dimension and areal distribution of these rock bodies. The results show that thickness variation is a product of differential compaction and movement of deep seated structures contemporaneous with sedimentation. Structural effects on two scales can be recognized, one on the order of 6 to 10 miles and other greater than 20 miles. Differential compaction effects are found to be closely associated with those produced by the smaller scale structures while some of the large scale structure effects are concordant with present Alleghenian structures." @default.
- W221803415 created "2016-06-24" @default.
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- W221803415 date "1992-01-01" @default.
- W221803415 modified "2023-09-22" @default.
- W221803415 title "Spatial thickness variation of Carboniferous coal-bearing sequences: A sedimentological response to varying levels of compactional and structural control" @default.
- W221803415 hasPublicationYear "1992" @default.
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