Mkango Announces Shareholder Approval For Talaxis Transaction

London / Calgary: January 18, 2018 – Mkango Resources Ltd. (AIM/TSX-V: MKA) (the \’Company\’ or \’Mkango\’) is pleased announce that shareholders have approved the entering into and completion of the previously announced investment transaction with Talaxis Limited (\’Talaxis\’) on a disinterested basis (after excluding any votes represented by shares held by Talaxis) at its annual and special meeting of shareholders held in Toronto today (the \’Meeting\’). Subject to final

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Detrital zircon U–Pb ages of the Murui Formation in the Zhalantun area: Implications for the Early Cretaceous tectonic setting of the southern Great Xing’an Range, NE China

This paper reports U–Pb ages of detrital zircons from a series of clastic and pyroclastic rocks from the Murui Formation in the southern Great Xing’an Range (GXR), NE China, with the aim of constraining the depositional age of this poorly dated unit. These data, combined with the petrographic and sedimentology characteristics of the rocks, are used to constrain the sediment sources and tectonic setting of the provenance and provide wider insight into the tectonic evolution of the southern GXR during the Late Mesozoic. Two lithic arkose samples have dominant age groups at 249–250, 159–160, 136–147, and 394–415 Ma, and 301–323, 278–288, 209–237, and 142–163 Ma, respectively. The U–Pb zircon data constrain the maximum depositional age of the Murui Formation to 136 ± 1 Ma, that is, the Early Cretaceous. A lithic–crystal tuff from the upper Murui Formation yielded zircons with a weighted mean U–Pb age of 136 ± 1 Ma (n = 47, mean square weighted deviation (MSWD) = 2.2), indicating that volcanic activity was contemporaneous with sedimentation of the Murui Formation. U–Pb dating of zircons from a pyromeride in the Baiyingaolao Formation that was erupted unconformably onto the Murui Formation yielded a peak age of ~120 Ma, which constrains the depositional age of the Murui Formation to 120–136 Ma. Further dating of detrital zircons shows a range of ages, indicating the various of sediment origins. The Late Jurassic to Early Cretaceous volcanic rocks in the GXR served as the principal detrital sources for the Murui Formation in the southern GXR. Grain size and modal analysis of the sediments shows that the depositional environment was a stable intracontinental fluvial setting, and the provenance of the detritus was most likely a magmatic arc. According to stratigraphic contact relations, the Baiyingaolao Formation is supposed to have obvious intervals with lower volcanic strata, which combined with disparities between the southern and northern GXR in terms of the duration of volcanism, magmatic events, and the depositional age of the Murui Formation. We can conclude that the restricted occurrence of the Early Cretaceous detritus between the earlier and later phases of volcanism suggests progressive exhumation of the southern GXR in the Early Cretaceous. These may relate to post-orogenic extension related to oceanic subduction. The southern GXR remained a site of active sedimentation during the continental extension period across the whole of NE China in the Late Jurassic to Early Cretaceous.

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Cretaceous basalts of the High Arctic large igneous province at Axel Heiberg Island (Canada): Volcanic stratigraphy, geodynamic setting, and origin

The Cretaceous (Cenomanian, ~96 Ma) basaltic rocks of the Strand Fiord Formation of the Sverdrup Basin of the Canadian Arctic Archipelago, Nunavut, Canada, are a part of the High Arctic large igneous province. The basaltic suite reaches a thickness of almost 1,000 m on Axel Heiberg Island in its depocentre and over 700 m at the studied section. The rocks are variably fractionated tholeiitic basalts, which are geochemically similar to many other continental flood basalts, particularly to low Ti basalts of flood basalt provinces. Geochemical as well as Sr (87Sr/86Srinitial ~ 0.7045 to 0.7067) and Nd (ƐNd(t) ~ +1.3 to +4.3) isotopic signatures of the basalts were inherited during partial melting of spinel peridotite of an ancient subcontinental lithospheric mantle, which was modified around 0.7–0.9 Ga by a metasomatic event. The melting generating the Cretaceous basalts was probably triggered by a mantle plume but was also associated with basin rifting and stretching. There is evidence of plume-induced doming and uplift of the crust prior to and during the eruption of the basalts as documented by the progression from marine sedimentation to subaerial/lacustrine and then back to marine sedimentation in the Sverdrup Basin centre. The basalts represent parts of the Early Cretaceous igneous province that is dispersed around the Arctic Ocean due to the opening of the Canada Basin, which is inferred to be related to a mantle plume.

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Geochemical characteristics of light hydrocarbons and their influencing factors in natural gases of the Kuqa Depression, Tarim Basin, NW China

In order to determine the source of the light hydrocarbons in the Kuqa Depression of the Tarim Basin, Northwest China, their geochemical characteristics are documented, and possible influencing factors are discussed in a broad context on the basis of geochemical analyses of natural gas samples from 19 wells in combination with previously reported natural gas components and carbon isotope values from the same depression. The biomarker analytical results show that (a) methyl cyclohexane (37.5–60.3%) of natural gas predominates the C7 light hydrocarbon series (methyl cyclohexane, heptanes, and dimethyl cyclopentane), and (b) the heptane content (25.0–54.8%) is also relatively high. The C6–7 light hydrocarbon series (aromatics, normal alkanes, and cycloalkanes) have abnormally high aromatics (benzene and toluene) content (26.2–83.8%). Heptane value (13.31–37.77%) and isoheptane value (2.10–7.64%) indicate that the Kuqa natural gases are of high maturity and typical of coal-derived gas (gas generated by sapropelic source rock). Their light hydrocarbons, however, appear to have some characteristics of mixed-source organic matter. Specifically, the light hydrocarbons in the Dina 2 gas field show characteristics of the coal-derived gas; those in the Dabei gas field show some features of the oil-associated gas (gas generated by humic source rock), whereas those in the Kela 2 and Keshen 2 gas fields and Well Yangtake-101 display characteristics of the mixed source organic matter. The abnormally high content of the aromatics in the Kuqa Depression may have resulted mainly from their high productivity during the thermal maturity of humic type organic matters and the gases accumulation of late stage. The different relative contents of the aromatics in various oil and gas fields may have been accounted by different organic matter types, maturity, and distribution patterns of source rocks.

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Neotectonic movement in the southern margin of the Ordos Block inferred from the Qianhe River terraces near the north of the Qinghai–Tibet Plateau

The Qianhe River flows between the Liupanshan Orogen and the Ordos Block, with the river valley controlled by the southern margin fault of the Ordos Block. Five asymmetrical terraces exist on the banks of the Qianhe River, which correspond to the five terraces of the Wei River. Each terrace is composed of alluvial deposits at the bottom beneath loess deposits, which are characterized by alternating loess (L) and paleosol (S) layers, with the basal layers of the loess deposits being S0, S1, S53, S8, and L15 from T1 to T5. The heights of the five terraces T5, T4, T3, T2, and T1 are 220 to 260 m, 130 to 160 m, 60 to 80 m, 20 to 30 m, and 8 to 10 m, respectively, above the present valley, and their ages are 1.2, 0.8, 0.5, 0.13, and 0.01 Ma, respectively. These ages are generally consistent with the several uplift periods of the Qinghai–Tibet Plateau in the medium and late stages. Therefore, neotectonic movement is the controlling factor of river terrace formation in the periphery of the Ordos Block. According to the south-west movement of the river channel in the lower reaches of the Qianhe River, it can be estimated that the Ordos Block rotated about 20° counterclockwise in the Pleistocene.

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Mkango Announces Exercise Of Warrants

London / Calgary: January 12, 2018 – Mkango Resources Ltd. (AIM/TSX-V: MKA) (the \’Company\’ or \’Mkango\’) announces that following the exercise of warrants over 2,156,060 common shares without par value in the share capital of the Company (\’New Shares\’), it has received an aggregate cash consideration of £137,650 and is issuing the equivalent number of New Shares. The warrants being exercised comprise 2,006,060 warrants at 6.6 pence each and 150,000 warrants at 3.5 pence each. The

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