Douglas County provided an initial estimate for the pilot sites at Sandstone as $379,400 for the first year. Thomas said she did not think this was the best use of taxpayer dollars. “If you ...

Among them, sandstone is mainly developed above the No. 4 coal seam ... and there are multiple types of gas reservoir combinations (Zhu et al., 2016). At present, Carboniferous–Permian CMG reservoirs ...

with only a slight revival in the far north during the time of the Upper Old Red Sandstone, and how it broke out again with great vigour at the beginning of the Carboniferous period. Sir Archibald ...

This is a well-written important paper on the recovery of fauna and flora following the end-Permian extinction event in several continental sites in northern China. The convincing conclusion, a rapid ...

The Benxi Formation belongs to the Upper Carboniferous and is primarily composed of bluish-gray to black mudstone and sandy mudstone, with a few layers of gray fine sandstone and relatively thick coal ...