Biostratigraphy and paleoecology of fusulinids from Bukit Panching, Pahang

Abstract

Bukit Panching, part of the previously described massively bedded Upper Carboniferous Panching Limestone, exhibits well-bedded limestones of thickness 1-4 metres that offer excellent stratigraphic control. From the distribution of the fusulininids recovered, five local assemblage zones are established. These fusulininids and the lithological character of the limestone indicates that the limestone ofBukit Panching was deposited in a warm shallow marine sheltered environment. Although fusulinaceans seemed to dominate the fauna, endothyraceans were the most diverse.

Spatial and temporal distribution of microbial carbonates, skeletal and non-skeletal grains in a Pennsylvanian carbonate platform (Valdorria, Northern Spain)

“…However, their ecological preferences seem to be located in the shallow to medium depth, from 5 to 55 mbsl, observedin the outer platformduringthe late part of the regressive intervals.Similarly, Della Porta et al (2005) in Sierra del Cuera platform observed the deposition of endothyrids primarily within skeletal-algal packstone-grainstone and algal-skeletal packstone of the outerplatform, as well as in coated-grain grainstone. It is noteworthy to mention that in Valdorria the distribution of endothyrids appears to be negatively affected by sea-level rise leading to deeper and lower-energy environment (Skipp et al, 1966;Idris and Azlan, 1989) during the maximum-flooding intervals.Consistently, a number of studies reported endothyrids in high-energy shallow environments (Ferguson, 1963;Skipp, 1969;Mamet, 1974, 1979;Haynes, 1981;Gallagher, 1998). This, however, contrasts with previous interpretations that the distribution of Endothyroidea is driven mainly by the type of substrate (Vachard et al, 2010).…”