...A.F. Safronov; O.N. Chalaya; I.N. Zueva; A.R. Aleksandrov Abstract A natural oil seep has been revealed in the floodplain of the middle stream of the Amga River, in zone of the exposure of Middle Cambrian sediments. A distinctive feature of saturated hydrocarbons of this oil is the absence of 12...

...; in the longitudinal section, the roof is 30 km in length and –20 km in width. The results of deep drilling and modern CDP-2D seismic prospecting in the Khochom area in the east of the Aldan anteclise are the most informative. The Khochomskaya well 1 was drilled in the lower reaches of the Amga River in the apical...

...Fig. 4. Paleogeographical reconstruction of Early Cambrian basin with Sakha reef belt and localities of sections with Lower—Middle Cambrian boundary. Sections: 6 — Lena River, upper reaches, below the Ichera River mouth, 7 – Amga River, 8 -Lena River, middle reaches, near Elanka Village, 9...

...Fig. 2. Core sample of cavernous limestones of the Tankhai Formation saturated with oil. Hydrogeological well T-1, Amga River. ...

..., Amga River, at the mouth of the Bere Brook), the oil-saturated limestones are taken from the depth range 70–75 m. In the other borehole, 80 km apart from the first one (BH-1P, Amga River near Bologur Village), the deposit is penetrated at a depth of 282 m. In the dredged core, oil seeped out of rather...

..., which resulted in the uniform coverage of the vast, poorly studied areas in the lower reaches of the Aldan, Amga and Maya rivers. CDP seismic data were obtained from non-explosive vibroseis sources of SV-20/150 type or Yenisei KEM-4 impulsive sources with 60-fold coverage. Their total length is 11,350...

...: a – regional faults, b – structural sutures; 11 – gold-ore regions. 1 – Chara, 2 – Tokko, 3 – Oldongso, 4 – Kodar, 5 – Khani, 6 – Udokan, 7 – Kalar, 8 – Olekma-Kurtakh, 9 – Apsakan, 10 – upper-Amga, 11 – upper-Timpton, 12 – Gonam, 13 – middle-Sutam, 14 – Central-Aldan, 15 – upper-Nimnyr, 16 – Guvilgra...

... (conodonts), Luchinina (algae); geological and geophysical materials were interpreted by Divina, Salikhov, and Staroseltsev. The Ledyansky parametric borehole (3,996.0 m deep), drilled on the Kheta River 30 km from its source, penetrated the Riphean, Vendian, and all Cambrian deposits ( Fig. 2...

... potential of Middle Cambrian deposits in the Amga River basin (east of the Aldan anteclise) . Geologiya i Mineral’no-Syr’evye Resursy Sibiri , No. 3 , 38 – 43 . Galushko , Ya.A. , Potapov , S.V. , Nevolin , B.S. , Gudzenko , V.T. , 1975...

... of its southern affluents: Tolba, Botoma, and Amga), the petroleum indications are connected with sedimentary rocks of Cambrian age. Farther east of the Lena, in the basin of Yana River, traces of petroleum are known in Mesozoic sediments (Lower Cretaceous?). The exploration of this vast area offers very...

.... Such processes took place during the same geological periods in Transbaikalia ( Rutshtein et al., 2005 ) and the Amur River region ( Boriskina and Khomich, 2006 ; Khomich and Boriskina, 2006 ; Khomich and Petrishchevskii, 2004 ). Therefore, sizable Late Mesozoic (J–K) gold deposits were discovered not only...

... (on the slope of the Aldan anteclise, exposures of Cambrian rocks are found along the Lena, Aldan, Amga rivers, etc.) and in the northwest (on the slope of the Anabar anteclise, as coastal outcrops along the Tyung, Linde, Serki rivers, etc.). The rocks of the Kuonamka Horizon, anomalously enriched...

... No. 2021-104 Amgaite Tl 3+ 2 Te 6+ O 6 Amgt In the upstream of Khokhoy creek, right tributary of Amga River, 120 km W of Aldan town, Aldanskiy region, Sakha Republic (Yakutia), Eastern Siberia, Russia (59°06’36” N, 123°14’42” E) Anatoly V. Kasatkin*, Galina S. Anisimova, Fabrizio Nestola...