... into the permafrost zone of unique thickness. Direct indicators of ore and gas presence are the East Anabar, Central Olenek, and Siligir–Markha fields of natural bitumen and oil shows in kimberlite pipes of the Daldyn–Alakit region (Udachnaya pipe). The bituminous-carbonate sediments of the Khatyspyt Formation...

.... The studies allowed us to revise the classification of some lithostratigraphic units of the Vilyui and Markha-Morkoka facies, to give detailed lithofacies and paleontological characteristics of formations and members, and to reveal lateral changes of coeval deposits within both facies at every stratigraphic...

...E.I. Nikolenko; V.P. Afanas’ev; N.P. Pokhilenko Abstract We present results of study of the specific composition and parageneses of pyrope-almandine garnets from alluvial deposits of the Muna-Markha interfluve drainage in the Yakutian diamondiferous province. The data are correlated...

... of garnets and chromites of kimberlites of the Daldyn-Alakit region. Kimberlite pipes Alakit-Markha field indicator minerals of kimberlites In the late 1980s, a bunch of kimberlite pipes (five bodies) buried beneath Upper Paleozoic deposits and traps was discovered in the central part...

..., respectively. The Anabar Province also includes the Markha granite-greenstone terrane buried beneath the cover deposits in the Markha River basin; the core of deep boreholes from this area contain granitoids (see below). The age of substratum formation is estimated at 2.5 Ga, and metamorphism, at 1.76 Ga [ 6...

.... However, both kimberlitic and basaltic magmatism appeared within the Vilyui–Markha dike swarm in the rift shoulder, which experienced a weaker extension of the Archean cratonic lithosphere. Middle Paleozoic kimberlite magmatism produced the Daldyn–Alakit and Upper Muna fields ( Fig. 1 ) in the territory...

..., greenschist to amphibolite facies (Akitkan foldbelt); 6 — anorthosite complex; 7 — kimberlite fields with dated crustal xenoliths (1 — Mirny, 2 — Alakit-Markha (Alakitskoe), 3 — Daldyn, 4 — Upper Muna (Munskoe)); 8 — major faults, schistosity zones, and other faults; 9 — boundaries of the denuded...

... was studied in sedimentary strata and kimberlite pipes of three large diamondiferous areas: Upper Muna, Daldyn–Alakit (Olenek CAB), and Middle Markha (Middle Vilyui CAB) ( Table 2 ). Table 2. Chemical composition of texture-forming ground ices in diamondiferous areas of the northeastern Siberian...

... of the pipes of the Nakyn field are most similar to the kimberlite rocks of the Aikhal pipe from the Alakit-Markha field [ 1 – 4 ]. The age of kimberlite pipes determined for phlogopite by the Rb-Sr method is 366±10 Ma [ 4 ], and by the 40 Ar- 39 Ar method, 380±12 Ma [ 11 ]. Data on the composition...

... in the north ( Fig. 1 ). Fig. 1. Tectonic scheme of the eastern Siberian Platform. 1 , 2 – boundaries of: 1 – paleorift system, 2 – Vilyui-Markha zone; 3 – kimberlite fields: 1 – Malaya Botuobiya, 2 – Nakyn, 3 – Alakit, 4 – Daldyn, 5 – Muna. The Nakyn kimberlite field occurs...

... is dominated by Type 3 kimberlite, while Type 1 and 2 kimberlites form only few pipes. The pipes of the Alakit-Markha field are filled with Type 1 and 3 kimberlites approximately in equal parts. In the Upper Muna field, Type 3 kimberlites are predominant. Type 4 and 5 kimberlites occur in the northern Yakutian...

.... Goldberg, N.S. Beskrovny, T.K. Bazhenova, D.S. Yashin, B.A. Klubov, E.I. Bodunov, and others. There are several bitumen fields in the Late Precambrian and Cambrian deposits within the YDP. These are outcrops of bitumen-saturated (2% and more) rocks: Siligir-Markha (with the Markha key borehole...

... with the kimberlites of the Middle Markha region (Nakyn field) ( 2 ) and diamondiferous regions of Yakutia (Daldyn, Alakit–Markha, and Mirnyi regions) ( 3 ). Element contents are given after Belov et al. (2008) . The transformed lapilli tuffs and associated silt-pelitic tuffs, xenotuffs, and tuffstones have...

... Ordovician Volgian Horizon in one of the search areas of the Daldyn-Alakit region (basin of the Markha River) conodonts accounted for more than 50 % of the total volume. Such concentrations are extremely rare in younger rocks and are related to special burial conditions. Therefore, the weights...

... structures, grabens, horsts accompanied by predominantly felsic volcanism and evaporite deposition. New rift-bounding faults were generated and acted as the main magma conduits, including the Vilyui–Markha fault in the northwest, the Chara–Sinsk fault in the southeast, and Kontai–Dzherba fault in the inward...