Results 111 to 120 of about 5,620 (262)

Bed‐scale quantitative discrimination of hyperpycnites from intrabasinal turbidites—Results from a channelised slope system in the Upper Carboniferous Westward Ho! Formation, United Kingdom

Sedimentology, EarlyView.
ABSTRACT Features considered indicative of hyperpycnites and intrabasinal turbidites overlap. Outcrop study presented here suggests that the Westward Ho! Formation forms an 800 m high deepwater‐slope system dominated by hyperpycnites. Taking this unit, and other successions where hyperpycnites have been described, as having been deposited solely from ...
Tony Reynolds
wiley   +1 more source

Evolution Model for the Paleoproterozoic Talvivaara Mudstone‐Hosted Ni‐Zn‐Cu‐Co Deposit in Fennoscandia

Terra Nova, EarlyView.
ABSTRACT The Paleoproterozoic Talvivaara mudstone is a very large sulfidic Ni‐Co deposit that records enhanced organic matter accumulation during the global Shunga Event. Here, rock geochemistry and microscale S and Fe isotope composition of in situ pyrrhotites and pyrites are studied in well‐characterised, well‐preserved drill core samples.
Raimo Lahtinen, Jaakko J. Laitala, Joonas J. Virtasalo, Martin J. Whitehouse   +3 more
wiley   +1 more source

Black shales – from coolhouse to greenhouse (early Aptian)

, 2015
Approximately 120 Ma major volcanic outgassing on the Ontong Java Plateau resulted in perturbations of the global carbon cycle, in a change from cool to greenhouse climate conditions and in major changes in oceanography leading to widespread deposition ...
Weissert, Helmut, Keller, Christina E, Hochuli, Peter A, Giorgioni, Martino, Bernasconi, Stefano M   +4 more
core   +1 more source

Porosity Preservation in Deeply Buried (8500 m) Jurassic Calcareous Mudstones of the Vienna Basin (Austria)

Terra Nova, EarlyView.
ABSTRACT Significant porosity of more than 5% was found at depths of more than 8500 m in poorly sorted, calcareous mudstones of the Malmian Mikulov Formation. These overpressured rocks are the main hydrocarbon source rock in the Vienna Basin. Core samples from present‐day depths of 8150 m to 8550 m were analysed using X‐ray diffraction and scanning ...
Susanne Gier, Jürgen Schieber, Andrea Forstner‐Schicker, Peter Krois   +3 more
wiley   +1 more source

A Sándorhegyi Formáció szervetlen geokémiai vizsgálatának eredményei (Pécselyi Tagozat, Nosztori-völgy) | Inorganic geochemistry of Sándorhegy Formation (Pécsely Member, Nosztor Valley, Hungary)

, 2005
Dolgozatunkban – őskörnyezeti keretbe illesztve – a Sándorhegyi Formáció szervesanyagban gazdag mészköveinek (Pécselyi Tagozat, Csopak, Nosztori-völgy) részletes szervetlen geokémiai jellemzését mutatjuk be.
Raucsikné Varga, Andrea Beáta, Raucsik, Béla, Horváth, Hajnalka   +2 more
core  

CHEMOSTRATIGRAPHY AND EVALUATION OF HYDROCARBON POTENTIAL OF THE BELATA BLACK SHALES, PERAK, PENINSULAR MALAYSIA

, 2020
Paleozoic black shales in Peninsular Malaysia forms 25% of its sedimentary area cover, however, research on the thermal maturity of the black shales and their economic potential have been overlooked.
OWUSU BOATENG, ESTHER
core  

The Bakken Model: Deposition of Organic-Rich Mudstones and Petroleum Source Rocks as Shallow-Marine Facies Through the Phanerozoic

Journal of Marine Science and Engineering
Many organic-rich marine mudstones, which are key hydrocarbon sources, were deposited on continent margins in mid-water oxygen-minimum zones (OMZs) that expanded and intensified during oceanic anoxic events (OAEs).
Ed Landing
doaj   +1 more source

Influence of Organic Matter Thermal Maturity on Rare Earth Element Distribution: A Study of Middle Devonian Black Shales from the Appalachian Basin, USA

Energies
This study focuses on understanding the association of rare earth elements (REE; lanthanides + yttrium + scandium) with organic matter from the Middle Devonian black shales of the Appalachian Basin.
Shailee Bhattacharya, Shikha Sharma, Vikas Agrawal, Michael C. Dix, Giovanni Zanoni, Justin E. Birdwell, Albert S. Wylie, Tom Wagner   +7 more
doaj   +1 more source

Comparative organic geochemistry of shale deposits of northern Appalachian Basin

Petroleum Research
The organic-rich black shales in the Appalachian basin are a vital producer of natural gas. In this study, we present new multiproxy geochemical data from the Ordovician and Devonian black shales in New York (NY) and Pennsylvania (PA).
Nandini Kar, Kathryn Tamulonis, Richard W. Smith, Stella C. Woodard, Mark R. Noll, Reilly M. Blocho, Andre Brunette, William A. Heins   +7 more
doaj   +1 more source

Tethyan-Mediterranean organic carbon-rich sediments from Mesozoic black shales to sapropels

, 2009
The Jurassic to Holocene record of black shale deposition in the Tethys-Mediterranean region is unrivalled by that of any other ocean basin, either in land sections or drill cores.
Emeis, K., Weissert, H., KAY‐CHRISTIAN EMEIS, HELMUT WEISSERT   +3 more
core   +1 more source