Carboniferous Early

Sardinia was constmcted during a long and complex geodynamic evolutionary histoiy. One of the most important geological events is the Her cynian orogeny, which occurred during Carboniferous-Early Permian time... 

It is noteworthy that there is very little evidence of dedolomitization in the studied sand body at Ballycastle, in marked contrast to that described by Wang (1992) from reddened sandstones in the same succession. Given the interpretation that fracture-related cementation was Late Carboniferous in age, a possible implication is that flushing of unconformity-sourced oxidizing meteoric fluids in the Latest Carboniferous/Early Permian was impeded by the structural-diagenetic compartmentalization of the sand body, compared with those in which ferroan dolomite cement was more homogeneously distributed. 

Antarctica, and India. The volume of this ice sheet reached its peak (B) in the Late Carboniferous (i.e., Pennsylvanian) and then declined during the Early Permain (C). The glacial deposits in the Transantarctic Mountains date from the Late Carboniferous/ Early Permian and include glaciomarine sediment deposited at the margin of the ice sheet presumably because seawater transgressed locally onto Gondwana due to isostatic depression (Adapted from Veevers and Powell (1987))... 

The site comprises a sequence of beds from the Grahamstown Lake Formation of late Carboniferous/ early Permian age (Ofifler et al, 1974). The section exposed in the quarry consists of 3 beds a very thick (>20 m) bed of conglomerate, overlain by a thin unit ( 4 m) of shaley and pebbly tuff, and then by a thick (>20 m) layer of daeitie ignimbrite. 

Clarke, M.J. (1990) Late Palaeozoic (Tamarian Late Carboniferous-Early Permian) cold water brachiopods from Tasmania. Alcheringa, 14, 53-76. 

Carboniferous 345 Myr Climate cools, marked latitudinal gradients. Extensive forests of early vascular plants, especially club mosses, horsetails, ferns. Coal beds form. Amphibians diversify first reptiles appear. Radiation of early insect orders... 

The Carboniferous deposits reached their maximum temperatures at the end of the Carboniferous, while the diagenetic processes carried on until the Early Permian. 

Abstract The late Devonlan-early Carboniferous volcanic units of the Harvey Group west of Fredericton have received less attention than similar volcanic areas regarding their volcanic characteristics and potential for metallic mineral occurrences. Previous research and mineral exploration activity between the 1950s and 1980s typically focused on the search for Uranium mineralization and improved knowledge of the local volcanic stratigraphy. 

The Shin Formation of the Mabou Group is Early Carboniferous in age and shows a fining-upward sequence of pebble to boulder conglomerate. The Minto Formation of the Pictou Group is from the Late Carboniferous and contains cross-and horizontal-bedded feldspathic and quartzose arenite and pebble arenite. 

Potentially, the advantage of this thermometer will be that it allows the determination of temperatures of carbonate formation without kuowiug the isotope compo-sitiou of the fluid. Came et al. (2007), for example, presented temperature estimates for early Siluriau aud late Carboniferous seawater, which are consistent with varying CO2 concentrations. 

Another type of analcime concentrations in sedimentary rocks are analcimolites. These are rocks composed almost entirely of granular, spherulitic analcime. Beds up to 1 to 2 m thick have been described in Jurassic formations of Georgia (9). Similar rocks have been found by Buryanova (10) among analcime tuffs and tuffaceous sandstones of early Carboniferous deposits of Tuva. Analcimolites are structurally similar to the rocks described by Vanderstappen and Verbeek (11) in Cretaceous and Jurassic rocks of the Congo. These authors assumed a sedimentary... 

Osmundaceae can be traced back to the Upper Carboniferous. Earlier known reports of leptosporangiate ferns are in the Lower Carboniferous. Subsequent major filicalean radiations during the early Mesozoic resulted in several families with extant representatives, but it was obviously not until the Upper Cretaceous that much of the extant diversity has appeared [365]. Based on coevolution, the Urediniomycetes and Ustilagjonmycetes appeared as distinct lineages at least since the Carboniferous. 

Retallack G. J. (1999a) Carboniferous fossil plants and soils of an early mndra ecosystem. Palaios 14, 324-336. 

The above scenario is consistent with the observation that calcite was the dominant mineralogy of carbonate skeletal components in the early to mid-Paleozoic and the mid-Jurassic to mid-Tertiary (Figure 25), the times of high Sr/Ca and low Mg/Ca ratio (Figure 24). Aragonite mineralogy, however, dominated the mid-Carboniferous... 

The earliest known moss fossil is from the early Carboniferous period, about 320 million years ago. Mosses are not well-represented in the fossil record because their soft tissue is not well preserved. An examination of extant species indicates that bryophytes are a polyphyletic group. They appear to have evolved from more than one ancestral line. 

---