carbonaceous shale

carbonaceous shale

[kär·bə′nā·shəs ′shāl]
(geology)
Shale rich in carbon.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
6B-E) comprises of 14 meter sequence of sandy bioclastic limestone interbeded with glauconitic sandstone and sandy carbonaceous shale. This cycle is represented by six transgressions, i.e., TRT 1-6 and five regressions (RST 1-5; Figs.
Lithologically, the Late Paleocene Patala formation in Upper Indus Basin contains Calcareous Shale with alternative coal seams whereas, in study area it comprises of Greenish Grey Carbonaceous Shale with occasional Pyritic nodules; marl and white to grey nodular limestone while coal is present in abundance in middle part of the rock unit.
The Coal-bearing Member is dominated by gray-gray black siltstone, silty mudstone and carbonaceous shale and is intercalated with coal seams (M1-M5), while coal seam M5 is recoverable throughout the area.
Carbonaceous shale which is sandwiched in coal seam and was formed during coal formation is mainly composed of minerals and organic carbon.
Naresh Ghose, a Bengaluru-based geologist, first discovered the microfossils in a carbonaceous shale in central India. Ghose, who is also a former geology professor at Patna University, reported his findings at the (http://igcroorkee.net/) Indian Geological Congress in Nagpur, an annual convention for Indian scientific discoveries. 
Ghose found these in the 2,000-million-year-old black carbonaceous shale from the Bundelkhand region of the Gwalior basin in Central India.
Grey and black carbonaceous shale, shale, and grey shaly sandstone are in the lower part, grey and black mudstone is found in the middle part, grey lime mudstone, and shale and shaly sandstone are present in the upper part.
2f) and terminates with a claystone/mudstone intercalated with carbonaceous shale (facies Fm) (Fig.
The Company secured 10 meters of coal and carbonaceous shale and 6 meters of gassy sandstone that has all been put in sealed containers and forwarded for desorption testing.
He measured this interval as 2539' 1" (774 m) of grey and red mudstone, sandstone, limestone, coal, carbonaceous shale and minor conglomerate.