Skip to search formSkip to main content
You are currently offline. Some features of the site may not work correctly.

phosphorite

 
National Institutes of Health

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
Highly Cited
2016
Highly Cited
2016
Abstract Increasing interest in deep-seabed mining has raised many questions surrounding its potential environmental impacts and… Expand
  • figure 1
Is this relevant?
Highly Cited
2011
Highly Cited
2011
Sulfur bacteria such as Beggiatoa or Thiomargarita have a particularly high capacity for storage because of their large size. In… Expand
  • figure 1
  • figure 2
  • figure 3
  • figure 4
  • table 1
Is this relevant?
2011
2011
Orthochemical sediments associated with Neoproterozoic glaciation have prominence beyond their volumetric proportions because of… Expand
  • figure 5.1
  • table 5.1
  • table 5.2
  • figure 5.2
  • figure 5.3
Is this relevant?
2010
2010
In order to investigate the radiological hazard of naturally occurring radioactive material (NORM) in phosphorite deposits of… Expand
Is this relevant?
2003
2003
A record of sedimentary, authigenic, and biological processes are preserved within the Upper Cretaceous (Campanian) Alhisa… Expand
  • figure 1
  • figure 2
  • table 1
  • table 1
  • figure 5
Is this relevant?
Highly Cited
2000
Highly Cited
2000
Phosphorus is a critical element in the biosphere, limiting biological productivity and thus modulating the global carbon cycle… Expand
  • table 1
  • table 1
  • figure 1
  • table 2
  • figure 2
Is this relevant?
1985
1985
................................................................................................................................................................ 5 l . I ntroduction .......................................................................................................................................................... 5 I. l The scope of the study ...................................................................................................... .............................. 5 1 .2 Previous work ............................................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1 .3 The investigated localities .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1 .4 Sedimentological methods ..... .......................................................................................... .............................. 7 1 .5 Paleontological material and methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. Regional stratigraphy of the conglomerate and adjacent strata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2 . 1 General features of the Brentskardhaugen Bed ............................................................... . ............................. 8 2 .2 Description of the Marhøgda Bed .................. . . ................................................................ ............................. 9 2.3 Festningen area ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2 .4 Diabasodden area ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2 . 5 Brentskardet area ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2 .6 Agardhbukta area ........ ......................................................... .......................................................................... 1 4 3 . Fossil content and age ............................................................. ................................................ .............................. 1 5 3 . 1 Ammonites and Belemnites ........................................................................................................................... 1 5 3 .2 Bivalves ........................................................................................................................................................... 1 5 3 .3 Brachiopods ......................................................................................................................... .......................... 1 5 3.4 Dinoflagellates ................................................................................................................. .............................. 1 5 3 . 5 Faunal comparisons ....................................................................................................................................... 1 5 3 .6 Age of the Brentskardhaugen Bed and adjacent strata ..................................................... ............................. 1 7 4 . Pebble content and orig in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8 4 . 1 Phosphorite pebbles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8 4.2 Chert pebbles .................................................................................................................................................. 24 4.3 Quartz pebbles ................................................................................................................................................ 25 5 . The matrix of the conglomerate ............................................................................................................................ 25 6. Origin of the Marhøgda Bed ................................................................................................... . ... .... ...................... 25 7 . Concluding remarks on depositional history ....................................................................................................... 25 7 . 1 Source of pebbles ........................................................................................................................................... 25 7 .2 The Ladinian Pliensbachian interval ........................................................................... ... ........................... 25 7.3 The Toarcian Bajocian interval ................................................................................................................. 26 7 .4 The Bathonian Cal lovian interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 8. Paleontological part ................................................................................................................ .... .......................... 28 8 . 1 I ntroductory notes ........................... .......................................................... ..................................................... 28 8.2 List of descriptions ............................................................................................................... .......................... 29 8.3 Brachiopoda ..................................................................................................................... .... .......................... 30 8.4 Bivalvia . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 8 .5 Ammonoidea .................................................................................................................................................. 36 8.6 Decapoda . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 �� .......................................................................................................................................................................... � Authors' address: Sven A. Backstra m Statoil P. O. Box 300 N-400 1 Stavanger Norway Present: Saga Petroleum als P. O. Box 9 N1 322 Høvik Norway lena Nagy Institute of Geology University of Oslo P. O. Box 1 047, Blindern Osl03 Norway 
  • figure I
  • figure 2
  • figure 7
  • figure 9
  • figure I
Is this relevant?
1981
1981
Many models of the origin of marine phosphorites require a sediment rich in organic matter, which by decomposition releases… Expand
Is this relevant?
1957
1957
Apatite contains only traces of uranium, yet as apatite is a minor constituent in most rocks and the major constituent of a few… Expand
  • table 1
  • figure 3
  • table 3
  • table 2
  • table 4
Is this relevant?
1955
1955
From introduction: This report details the investigations of the physical stratigraphy of the Phosphoria Formation in… Expand
  • figure 10
  • figure 11
  • figure 12
  • figure 14
  • figure 16
Is this relevant?