Preliminary stratigraphic cross section showing radioactive black shale zones in the Devonian black shales in eastern Ohio and west-central Pennsylvania

Even though the author already incorporated the citation of Sinninghe-Damste & Schouten (2006) into the text of the paper, the author regrets having failed to include their full citation within the Reference Section of my above paper which is: Sinninghe-Damste, J. S. & Schouton, S. (2006). Biological markers for anoxia in the photic zone of the water column. In, Volkman, J. K. (ed.), Marine Organic Matter: Biomarkers, Isotopes and DNA, (pp. 127 – 163). The Handbook of Environmental Chemistry, vol. 2N. Springer: Berlin and Heidelberg. https://doi.org/10.1007/698_2_005 The author also needs to paraphrase a statement made in the last three lines of the 2nd paragraph on page 40 where it reads as: “Thus, we may conclude here that paleo-upfreezing of any conodont-element(s) originally buried in the pre-lithified, light-colored shale occurred in order to account for their presence in black shale”. Instead, in lieu of that statement, it should read as “At this point in time of the study, we may tentatively conclude here while completely concluding later in the study, that conodont-elements originally existing in the underlying, pre-lithified, light-colored shale, had to paleo-upfreeze vertically upward into pre-lithified, black shale sediment in order to account for their presence in lithified black shale”.

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Accumulation Conditions and Gas Content Characteristics of the Lower Silurian in Northwestern Hunan, China

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.868.192 ◽

2013 ◽

Vol 868 ◽

pp. 192-195

Author(s):

Tuo Lin ◽

Jin Chuan Zhang ◽

Bo Li ◽

Wei He ◽

Xuan Tang

Keyword(s):

Black Shale ◽

Sedimentary Environment ◽

Sedimentary Facies ◽

Black Shales ◽

Gas Content ◽

Burial Depth ◽

Reservoir Properties ◽

Isothermal Adsorption ◽

Lower Silurian ◽

Deposition Conditions

The Lower Silurian marine shale is widely distributed in Northwestern Hunan and features in a large thickness of dark shale showed at outcrops. However, the accumulation conditions and gas content is unknown. The sedimentary facies, thickness and distribution, organic matter types and content, maturity, reservoir properties and gas content of the Lower Silurian black shale in Northwestern Hunan were investigated by field observation, sampling and experimental analysis. The results show that the black shales sedimentary environment is deep water continental shelf, with featured in abundant fossil. The burial depth of the Lower Silurian black shale is 0-3000 m, and its thickness is 10-40m while the average TOC is 1.0% and average Ro is 2.9%. For the disadvantaged sedimentary facies and shallow depth, the maximum gas content of the Lower Silurian black shale from well site desorption test is 0.59m3/t only, but the result of isothermal adsorption simulate test show that the Lower Silurian black shale have a good adsorption capacity, and can generate a large number of shale gas in Northwestern Hunan where better deposition conditions and suitable depth exist in.

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Structural, Optical, and Chemical Relations in Upper Freeport Coal of West-Central Pennsylvania: ABSTRACT

AAPG Bulletin ◽

10.1306/03b59418-16d1-11d7-8645000102c1865d ◽

1981 ◽

Vol 65 ◽

Author(s):

Timothy A. Moore

Keyword(s):

West Central ◽

Central Pennsylvania

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Abnormally high content of noble metals in wastes of the Fiagdon concentration plant: a possible new type of mineralization for the North Caucasus is gold-platinoid with base metals, localized in the Early-Middle Jurassic black shales

Геология и геофизика Юга России ◽

10.46698/vnc.2021.41.26.001 ◽

2021 ◽

Author(s):

А.Г. Гурбанов ◽

А.Я. Докучаев ◽

В.М. Газеев ◽

О.А. Гурбанова

Keyword(s):

Noble Metal ◽

Black Shale ◽

Middle Jurassic ◽

Black Shales ◽

North Caucasus ◽

Concentration Plant ◽

The North ◽

Icp Ms ◽

Polymetallic Mineralization ◽

Gold Platinum

На Северном Кавказе благороднометалльное (золото, серебро, платина, элементы платиновой группы) оруденение черносланцевого типа локализовано в тоар-ааленских флишоидных углеродсодержащих терригенных отложениях, приуроченных к региональной Самуро-Белореченской металлогенической зоне (СБМЗ) – от Дагестана до Адыгеи и Краснодарского края. Вовлечение в поисково-разведочные работы этого стратегического минерального типа оруденения дает возможность расширить минерально-сырьевую базу Южного федерального округа России. Цель исследований – выявление содержаний благородных металлов и элементов платиновой группы (ЭПГ) в промышленных отходах Фиагдонской обогатительной фабрики (ФОФ) и в рудовмещающих тоар-ааленских черносланцевых толщах. ФОФ, в частности, перерабатывала руды полиметаллических месторождений Кадат и Какадур, локализованных в тоар-ааленских флишоидных углеродсодержащих терригенных отложениях Авсандур-Ламардонского рудного поля (АЛРП). Проведена оценка АЛРП на возможность выявления здесь промышленно значимого золото-платиноидного с полиметаллами оруденения в черносланцевой толще. Методы исследования. ICP-MS анализом проанализированы 5 проб в Центре «ИГЕМ-Аналитика» на масс-спектрометре X-Series IIи 13 проб – в Лаборатории физико-химических и химических методов анализа ИМГРЭ на приборе Elan 6100 DRC. Результаты работы. Установленные в 18 пробах (в керне скважин) Фиагдонского хвостохранилища (ФХ) повышенные содержания благородных металлов можно объяснить наличием как в рудах АЛРП, так и во вмещающей их нижне-среднеюрской углеродсодержащей песчано-глинистой флишоидной толще нового для Северного Кавказа нижне-среднеюрского золото-платиноидного cполиметаллами оруденения в черносланцевой толще (2,5-3,2 мас. % УГВ). Предложена модель образования золото-платинового оруденения черносланцевого типа за счет конвекции вадозных вод в высоко металлоносных (Au, Ag, Pt, Pd) ранне-среднеюрских флишоидных толщах алевролито-аргиллитового состава. При поисковых работах на золото-кварцевый, золото-сульфидный и колчеданно-полиметаллический с золотом типы оруденения в Горной Осетии и в восточной части Горного Дагестана был выявлен ряд перспективных на золото объектов.В пределах СБМЗ может быть выявлен ряд промышленно значимых объектов с золото-платиноидным с полиметаллами оруденением в черносланцевых толщах тоар-ааленского возраста. Предложен комплекс мероприятий с минимальными временными, материальными и финансовыми затратами. In the North Caucasus noble-metal (gold, silver, platinum, elements of the platinum group (PGE)) mineralization of the black-shale type is localized in Toar-Aalenian flysch-like organic matter rich, terrigenous sediments in the regional (from Dagestan to Adygea and Krasnodar Territory) Samuro-Belorechenskaya metallogenic zone (SBMZ). Involvement in prospecting and exploration of this strategic type of mineralization provides the opportunity to expand the mineral resource base of the Southern Federal District of Russia. The Aim of the research is to identify the content of platinum and PGE in the industrial wastes of the Fiagdon concentration plant (FCP) and in the ore-bearing Toar-Aalenian black shale strata. In particular, processed ores of the Kadat and Kakadur polymetallic deposits, localized in Avsandur-Lamardon ore field (ALOF). The ALRP was prospected for economic gold-platinum with polymetallic deposit in the black-shales series. Methods. ICP-MS analysis - 5 samples were analyzed by ICP-MS in IGEM-Analytics Center on an X-Series II mass spectrometer and 13 samples - in the Laboratory of Physical-Chemical and Chemical Methods of Analysis of the IMGRE on the Elan 6100 DRC instrument. Results. The elevated noble metal concentrations established in 18 samples (borehole core samples) from the Fiagdon tailings dump could be explained by the presence of both the ALRP ores and the gold-platinum with polymetallic mineralization in the host Toar- Aalenian black-shales series (2.5-3.2 wt. % of carbonaceous matter). The model of formation of gold-platinum mineralization at the expense of vadose water convection in highly metalliferous (Au, Ag, Pt, Pd) Early-Middle Jurassic flysch-like strata of siltstone-argillite composition is proposed. During prospecting works for gold-quartz, gold-sulfide and colliery-polymetallic with gold types of mineralization in the Mountain Ossetia and in the eastern part of Mountain Dagestan a number of promising objects for gold were revealed. A number of economic significant objects with gold-platinum with polymetallic mineralization in black-shale series of Toar-Aalenian age can be identified within the SBMZ. A complex of prospecting with minimal time, material and financial expenses is proposed

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Insight on the possible use of black shales for geological storage of radioactive wastes

10.31219/osf.io/9cvg8 ◽

2021 ◽

Author(s):

CI Chemistry International

Keyword(s):

Black Shale ◽

Major Elements ◽

Black Shales ◽

Granulometric Analysis ◽

Before And After ◽

Different Depths ◽

Trace And Major Elements ◽

Ree Patterns ◽

Lree Depletion

This study was undertaken to investigate the natural materials before and after appropriate physicochemical treatments. The samples were collected at different depths from the outcrop Lamsied located in the Tarfaya-Boujdour basin. This work concerns a mineralogical and geochemical characterization of local black shale. For instance, mineralogical and granulometric analysis showed that the local black shale is composed essentially of calcite, and the texture does not depend neither on the depth nor on the lithology. The distribution of stable elements such as rare earth elements (RRE) and other trace and major elements was determined. Different techniques of analysis were used for the characterization of the samples. Enrichment or depletion of major elements was observed. NASC-normalized REE patterns revealed a heavy REE (HREE) enrichment, a light REE (LREE) depletion, a positive Eu anomaly and a negative Ce anomaly. The result indicates reduction conditions. Results of correlation analysis suggest the association of La, Ce, Dy, Ho, Er, Yb and Lu with terrigenous minerals and of Eu, Sm and Tm with carbonates and TOC (total organic carbon).

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