Results 121 to 130 of about 5,620 (262)

Biological Markers in Lower Jurassic Synrift Lacustrine Black Shales, Hartford Basin, Connecticut, U.S.A.

, 1990
The East Berlin Formation (Lower Jurassic, Hartford basin, Connecticut, U.S.A.) is distinctive for its six cyclic units of lacustrine black shale and gray mudstone. separated by playa and fluvial redbeds. The black shales arc each about a meter thick and
Hubert, John F, Akes, Jay F, Kruge, Michael A, Meriney, Paul E   +3 more
core   +1 more source

Fossil DNA in Cretaceous black shales: myth or reality?

, 2006
In summary, we believe that the claim of Inagaki et al. (2005) should be examined by analysis of molecular fossils from the black shales studied by these authors before the existence of fossil DNA in Cretaceous black shales can be accepted. The jury
Coolen, M.J.L., Sinninghe Damsté, J.S.
core  

Toarcian black shales in the dutch central graben: Record of energetic, variable depositional conditions during an oceanic anoxic event

, 2012
The environmental conditions, mechanisms, and processes that resulted in the deposition of organic-matter-rich sediments during the early Toarcian oceanic anoxic event are still a matter of discussion.
Klaver, G., Trabucho-Alexandre, J., Veld, H., de Boer, P.L., Dirkx, R.   +4 more
core   +1 more source

A Rezi Rzt-1 fúrás felső-triász képződményeinek szervetlen geokémiai jellemzői (Kösseni Formáció, Keszthelyi-hegység): őskörnyezeti tanulmány | Inorganic geochemical characteristics of the Upper Triassic rocks from borehole Rezi Rzt–1 (Kössen Formation, Keszthely Mountains, Hungary): a palaeoenvironmental study

, 2006
Tanulmányunkban a Dunántúli-középhegységből származó nori–rhaeti bitumenes márgák (Kösseni Formáció) szervetlen geokémiai adatait használtuk fel az üledékképződés őskörnyezeti viszonyainak jellemzésére.
Raucsikné Varga, Andrea Beáta, Raucsik, Béla, Peterdi, Andrea   +2 more
core  

Organic matter and trace element-rich sapropels and black shales: A geochemical comparison

, 1999
A distinct Pliocene eastern Mediterranean sapropel (i-282), recovered from three Ocean Drilling Program (ODP) Leg 160 Sites, has been investigated for its organic and inorganic composition. This sapropel is characterized by high organic carbon (Corg) and
Brumsack, H.-J., Lange, G.J. de, I.A Nijenhuis, Bosch, Hendrik-Johannes (paleontoloog), G.J De Lange, Nijenhuis, I.A., H.-J Bosch, H.-J Brumsack, Sinninghe Damsté, J.S., J.S Sinninghe Damsté   +9 more
core   +1 more source

Geochemical Evidence of First Forestation in the Southernmost Euramerica from Upper Devonian (Famennian) Black Shales. [PDF]

Sci Rep, 2019
Lu M, Lu Y, Ikejiri T, Hogancamp N, Sun Y, Wu Q, Carroll R, Çemen I, Pashin J.   +8 more
europepmc   +1 more source

Iowa Population Exposures to Metals and Metalloids in Well Water

Environmental Toxicology, Volume 41, Issue 7, Page 459-469, July 2026.
ABSTRACT Previous Iowa studies suggest low levels and chronic arsenic exposures are associated with prostate cancer. The rural Iowa population heavily relies on private wells for drinking water resources and thus is vulnerable to contaminants such as heavy metals found in well water.
Donald L. Simmons, Brian Wels, Alyssa Mattson, Elizabeth M. Miller, Zachary E. Hoggarth, Maya Sternberg, Susie Y. Dai, Dustin May, Michael Schueller, Michael Pentella   +9 more
wiley   +1 more source

Experimental Investigation of Mechanical Properties of Black Shales after CO₂-Water-Rock Interaction. [PDF]

Materials (Basel), 2016
Lyu Q, Ranjith PG, Long X, Ji B.
europepmc   +1 more source

Photosynthetic primary production in the Mesoproterozoic

New Phytologist, Volume 251, Issue 1, Page 64-80, July 2026.
Summary The Mesoproterozoic atmosphere had more CO2 and less O2 than at present. While the upper ocean was oxygenated, the deeper ocean was euxinic or ferruginous. Primary production was performed by Chlorobia, Cyanobacteria, Proteobacteria, and Archaeplastida.
Patricia Sánchez‐Baracaldo, John A. Raven   +1 more
wiley   +1 more source

Cu isotopes in marine black shales record the Great Oxidation Event. [PDF]

Proc Natl Acad Sci U S A, 2016
Chi Fru E, Rodríguez NP, Partin CA, Lalonde SV, Andersson P, Weiss DJ, El Albani A, Rodushkin I, Konhauser KO.   +8 more
europepmc   +1 more source