Due to the success of oil and gas production, turbidites have become exploratory targets over past 40 years in rift passive margin basins North South Atlantic. The turbiditic reservoirs settings Atlantic sedimentary located Brazil (Campos Basin) Portugal (Lusitanian represent potential economic units for hydrocarbon exploration. However, despite being considered analogous reservoirs, these pres...

Major trace element analyses, including pyrite chemistry of pyritic mudstones shallow-marine Singa Formation Pennsylvanian–Early Permian age have been carried out to assess gold potential, the source sulfur and organic matter. Regionally, spatially correlates with Bohorok (Sumatra, Indonesia), Kaeng Krachang group (Thailand), Lebyin (Burma or Myanmar). In Southeast Asia, this formation is impor...

The research area is located in south-eastern Slovenia and belongs to the eastern extensions of Slovenian Basin adjacent Adriatic Carbonate Platform. studied section 25 m thick consists grey, brownish reddish pelagic limestones calciturbidites, two bentonite layers 110 10 cm thick. Both volcanoclastic horizons consist greenish, fine-grained muddy material. To date, no other bentonites similar a...

At the orogenic gold deposits of Yana–Kolyma metallogenic belt (northeast Russia) both Au–quartz-sulfide mineralization with native and disseminated sulfide invisible Au developed. The textural mineralogical-geochemical features, isotope-geochemical characteristics gold-bearing sulfides from proximal metasomatites, possible forms occurrence in pyrite arsenopyrite have been studied using electro...

INTRODUCTION The 2.0 Ga iron-bearing Gunflint Formation was deposited during a transitionary period in Earth history when a stable oxic atmosphere was being established. The Animikie Group, which comprises both the Rove and Gunflint Formations, extends NE-SW for approximately 175 km from Thunder Bay, Ontario to northern Minnesota [1]. The thickness of the Gunflint ranges from 100 to 180 m, with...

There is a great need for more precise absolute ages for sedimentary rocks. We have been actively involved in developing techniques to directly date sedimentary rocks, rather than using associated igneous rocks, or using relative dating techniques. Sedimentary phosphate nodules (i.e. coprolites) are ideal candidates for absolute dating of sedimentary rocks. Phosphates occur commonly within the ...

The sediment of a highly productive lake (Priest Pot, UK) contains the biosynthesised hopanoid bacteriohopanetetrol (BHT) and a series of hopanediols and triols. These polyols represent intermediate stages in the conversion of biologically produced hopanoids to the diagenetic products, hopanes. Two of these geohopanoids, assigned as trishomohopane-32,33-diol and bishomohopane-30,31,32-triol hav...

This paper reports an experiment of using “artificial” sediments (mixed and DOM enriched) to simulate DIC and Alk fluxes (during inundation) and CO2 flux (during exposure) from subtidal mudflats. The authors also used an early diagenetic model to interpret and simulate the experiment output. (the latter is the focus of this paper) They found that CO2 flux (to atm during exposures) is generally ...