Results 161 to 170 of about 34,573 (203)

Nitrification in Paleocene Shale

Science, 1974
Exchangeable ammonium nitrogen is present in Paleocene (Fort Union) shale below a depth of 10 meters in North Dakota and eastern Montana. Above 10 meters, exchangeable ammonium nitrogen is nitrified in situ. The lack of viable nitrifying organisms and the probable lack of oxygen prevent in situ nitrification below 10 meters.
J F, Power   +3 more
openaire   +2 more sources

Late Cretaceous–Paleocene Depsits

2020
Preceding studies divided the Late Cretaceous deposits in the Cyrenaica Basin into two parts: the first part was deposited on the coast (Al Hilal and Al Athrun formations) and the second part in the inland (Qasr Al Abid, Al Baniyah, Al Majahir and Wadi Dukhan formations).
Osama Rahil Shaltami   +3 more
openaire   +1 more source

Paleocene stratigraphy in Egypt

Journal of African Earth Sciences, 2016
Abstract The Egyptian Paleocene is widely distributed with vertical and lateral facies changes geographically separated and subject to different tectonic and sedimentary regimes. Five coeval facies associations of the Paleocene outcrops are identified and named from south to north: Garra El-Arbain, Nile Valley, Farafra, Sinai, and Southern Galala ...
openaire   +1 more source

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