МОНГОЛ УЛСЫН ИХ СУРГУУЛЬ

Бидний тухай


Багш ажилтан

 /  Бидний тухай  /  Багш ажилтан /  Дэлгэрэнгүй мэдээлэл

Дэлгэрэнгүй мэдээлэл


Судалгааны чиглэл:
Мэдээллийг профессор, багш, ажилтан МУИС-ийн мэдээллийн санд бүртгүүлснээр танд харуулж байна. Мэдээлэл дутуу, буруу тохиолдолд бид хариуцлага хүлээхгүй.
Зохиогч(ид): P.Sodnomdargia, Л.Оюунжаргал, Д.Нансалмаа
"Geological and ore genetic study of the Bayankhundii Au orogenic occurence in eastern Mongolia.", The Society of Resource Geology meeting, Япон, 2024-5-26, vol. 73, pp. 1

Хураангуй

1. Geological and ore genetic study of the Bayankhundii Au orogenic occurence in eastern Mongolia. 2. P. Sodnomdargia1,2, Ts. Zayabayar2, L. Oyunjargal1, E. Purevbat2 and D. Nansalmaa1 3. National University of Mongolia1, Terra Seed LLC2 4. Oyunjargal@num.edu.mn 5. Poster preference 6. The Bayankhundii Au occurence is 450 km south of Ulaanbaatar in the Munkhkhaan soum of Sukhbaatar province. The Bayankhundii Au occurrence locates in the Idermeg terrane of the Kherlen-Govi orogenic system in the orogenic region of Southern Mongolia. Middle to late Devonian volcaniclastic sedimentary rocks were intruded by upper Permian to lower Triassic granitoids at the Burkhan Del deposit area. At the study area, quartz veins are containing ore minerals such as pyrite, arsenopyrite, native gold and chalcopyrite. 7. No

Зохиогч(ид): Д.Нансалмаа, Л.Жаргал, Б.Эрдэнэцогт
"Сайхан-Овоо формацын элсэн чулууны геохими", Монголын Геологи Хайгуул (Mongolian Mineral Exploration Roundup), 2023-3-30, vol. Монголын Геологи Хайгуул 2023 -3-30-31, pp. 2023 -3-30-31

Хураангуй

аман илтгэл

Зохиогч(ид): Д.Нансалмаа, Л.Жаргал, Б.Эрдэнэцогт
"Сайхан-Овоо формацын элсэн чулууны петрологи ба геохими", Монголын ба бүс нутгийн геологийн асуудлууд, Монгол Улс, 2022-10-21, vol. 21 №01 (574) 2022, pp. 120

Хураангуй

Сайхан-Овоо формацын элсэн чулууны петрологи ба геохимийн судалгаар тухайн талбайн элсэн чулууны ангилал хуримтлалын орчин тархалтын зүй тогтлыг судалсан

Зохиогч(ид): Н.Байгалмаа, Б.Эрдэнэцогт, Л.Жаргал, Д.Нансалмаа
"Нарийнсухайтын ордын элсэн чулууны петрографи, геохимийн судалгааны үр дүн", Монголын Геологи Хайгуул (Mongolian Mineral Exploration Roundup), 2022-5-5, vol. Монголын Геологи Хайгуул 2022, pp. 2022-05-05

Хураангуй

Middle and Upper Jurassic 18 sandstone core samples from exploration borehole, drilled in Nariinsukhait coal deposit, was studied. Geochemistry of samples indicates that sandstones were derived from acidic and intermediate rocks and mixed with recycled older sedimentary rocks. Possible sources are volcano-sedimentary rocks of Mississippian Tost Formation, granite and granodiorite of Early-Late Carboniferous Tavan-Uul complex and sedimentary rocks of Middle-Upper Triassic Noyon Formation. Paleoclimate indices (C-value, Rb/Sr, Sr/Ba, 1000xRb/K2O and CIA) reflect that coal seams were accumulated in warmer and more humid climate, when paleo-weathering was intense, whereas sandstones were deposited in relatively cold and arid climate. In Late Jurassic, it is more likely that paleoclimate became more arid and cold compared with Middle Jurassic, indicated by quite low CIA and Rb/Sr. Redox condition (Th/U, Ni/Co and V/Cr) was variable, probably controlled by paleoclimate. Moreover, various discrimination diagrams suggested that Middle Jurassic coal-bearing sedimentary rocks were accumulated in foreland basin. It is consistent with previous interpretations of regional tectonic during Triassic and Jurassic time. Түлхүүр үг: элсэн чулуу, тектоник, дунд юра, нүүрс, өмнөд Mонгол, форланд

Зохиогч(ид): Л.Оюунжаргал, Д.Нансалмаа, П.Содномдаргиа
"Өмнөд Хэрлэн-Буянтын металлогений бүс дэх Баянхөндий алтны илрэлийн эрдэслэг бүрэлдэхүүн, геохимийн судалгаа", Монголын Геологи Хайгуул (Mongolian Mineral Exploration Roundup), 2022-5-4, vol. XII, pp. ханан илтгэл №6

Хураангуй

Баянхөндий илрэл нь Сүхбаатар аймгийн Мөнххаан сумын нутагт харъяалагдана. Tектоник ангилалаар Өмнөд Монголын ороген муж, Хэрлэн-Говийн ороген тогтолцоо, Идэрмэгийн террейн (О.Төмөртогоо., 2012)-д байрлана (Зураг №1). Металлогений мужлалаар Монгол-Агнуурын тэнгисийн их муж, Төв Дорнод Монголын металлогений муж, Өмнөд Хэрлэн-Буянтын металлогений бүс дэх Баянтэрэм хүдрийн дүүрэг (Г.Дэжидмаа нар., 2020)-т хамаарагдана (Зураг №2). Геологийн тогтоцын хувьд Палеопротерозойн Баянтэрэм метакомплекс болон Эдиакари-доод кембрийн Хөх-Овоо формацын хурдсыг зүссэн дунд-хожуу кембрийн Хэрлэн бүрдлийн интрузив чулуулгууд, тэдгээрийн дэл судлын биетээс бүрдэнэ (Зураг №3). Алт-мөнгөний эрдэсжилт бүхий кварцын судлууд, зэсийн эрдэсжилттэй хувирлын бүс зураглагдана. Баянхөндий илрэл нь геологи, петрографи, минерографи, интрузив чулуулгийн геохимийн судалгааны үр дүнгээс харахад ороген гарал үүсэлтэй алтны хүдэржилт бүхий судлын төрлийн орд байх бүрэн боломжтой юм.

Зохиогч(ид): Д.Нансалмаа, Л.Жаргал, Б.Эрдэнэцогт, Б.Гантулга
"Сайхан-Овоо формацын элсэн чулууны судалгаа", Монголын Геологи Хайгуул (Mongolian Mineral Exploration Roundup), 2022-4-5, vol. 2, pp. 12

Хураангуй

Сайхан-Овоо формаци нь Дундговь аймгийн Сайхан-Овоо суманд оршино. Доод-дунд Юрийн настай Сайхан-Овоо формаци нь Идэрмэгийн террейнд (Г.Бадарч) харьяалагдана. Сайхан-Овоо хотгор нь Төв Монголд орших Мезо-Кайнозойн хамгийн том хотгор юм. Уг хотгор нь нүүрс, газрын тос, шатдаг занарын хувьд хэтийн төлөв сайтай ялангуяа газрын тосны хувьд маш чухал тунамал сав болно. Хотгорыг Юра, Цэрдийн тунамал хурдас дүүргэх ба эдгээр хурдсаас доод-дунд Юрийн Сайхан- Овоо формацын зузаан 2800 м хүрэх (Мөнхцэрэн нар, 2014) бөгөөд нүүрс, шатдаг занар агуулна (жишээлбэл: Цагаан-Овоо орд) (Бат-Эрдэнэ, 2012-V боть, Erdenetsogt et al., 2017). Тус формаци нь дээд ба доод мэмбэрт хуваагддаг.

Зохиогч(ид): Б.Тамир, Д.Нансалмаа
"Хээрийн дадлагын тэмдэглэл" Геологийн асуудлууд, vol. 20 (563), no. 563, pp. 124-134, 2021-12-25

https://journal.num.edu.mn/geology/issue/view/75

Хураангуй

2021 оны зуны дадлагын хүрээнд экзоген болон эндоген геологийн процесс, геологийн зураглал, эрлийн маршрут, сорьцлолтын ажлуудтай танилцах, хээрийн тэмдэглэл, зураг зохиох ажлуудыг хийж гүйцэтгэв.

Зохиогч(ид): Н.Байгалмаа, Д.Эрдэнэчимэг, Б.Эрдэнэцогт, Л.Жаргал, Т.Огата, Ж.Эрдэнэбаяр, А.Баатархуяг, Д.Нансалмаа, А.Билгүүн
"ӨМНӨД МОНГОЛЫН ДУНД ЮРЫН УУР АМЬСГАЛ, ГЕОДИНАМИКИЙН НӨХЦӨЛ. I ХЭСЭГ: НАРИЙНСУХАЙТ ОРДЫН ЭЛСЭН ЧУЛУУНЫ ГЕОХИМИЙН СУДАЛГАА" Journal of Geological Issues (Геологийн асуудлууд), vol. 19 (554), pp. 46-62, 2021-5-14

http://gimar.num.edu.mn/wp-content/uploads/2021/05/202119-p63_Batgerel-et-al_Journal-Pre-Proof.pdf

Хураангуй

Middle and Upper Jurassic 18 sandstone core samples from exploration borehole, drilled in Nariinsukhait coal deposit, was studied. Geochemistry of samples indicates that sandstones were derived from acidic and intermediate rocks and mixed with recycled older sedimentary rocks. Possible sources are volcanosedimentary rocks of Mississippian Tost Formation, granite and granodiorite of Early-Late Carboniferous Tavan-Uul complex and sedimentary rocks of MiddleUpper Triassic Noyon Formation. Paleoclimate indices (C-value, Rb/Sr, Sr/Ba, 1000xRb/K2O and CIA) reflect that coal seams were accumulated in warmer and more humid climate, when paleo-weathering was intense, whereas sandstones were deposited in relatively cold and arid climate. In Late Jurassic, it is more likely that paleoclimate became more arid and cold compared with Middle Jurassic, indicated by quite low CIA and Rb/Sr. Redox condition (Th/U, Ni/Co and V/Cr) was variable, probably controlled by paleoclimate. Moreover, various discrimination diagrams suggested that Middle Jurassic coal-bearing sedimentary rocks were accumulated in foreland basin. It is consistent with previous interpretations of regional tectonic during Triassic and Jurassic time.

Зохиогч(ид): Д.Нансалмаа, Л.Жаргал, Б.Эрдэнэцогт, Б.Гантулга
"САЙХАН-ОВОО ФОРМАЦЫН ЭЛСЭН ЧУЛУУНЫ ПЕТРОГРАФИЙН СУДАЛГААНЫ ҮР ДҮНГЭЭС" Journal of Geological Issues (Геологийн асуудлууд), vol. 19 (554), pp. 16-24, 2021-5-14

http://gimar.num.edu.mn/wp-content/uploads/2021/05/202119-p16_Nansalmaa-et-al_Journal-Pre-Proof.pdf

Хураангуй

Доод-дунд Юрын настай Сайхан-Овоо формац нь Идэрмэг террейнд харьяалагдана. Энэ өгүүлэлд Сайхан-Овоо формацын элсэн чулууны хэмхдэсүүд болон цементийн найрлага, тэдгээрийн хувирал, структур, текстурыг тодорхойлж, элсэн чулууны найрлагын ангиллыг тогтоолоо. Уг формацын дээд мэмбэрийн элсэн чулуунууд нь ихэвчлэн хээрийн жоншт литик аренитын литик аренитын, доод мэмбэрийн элсэн чулуунууд нь хээрийн жоншт литик аренитын найрлагатай байна.

Зохиогч(ид): Н.Байгалмаа, Л.Жаргал, Б.Эрдэнэцогт, Д.Нансалмаа
"Нарийнсухайт нүүрсний ордын элсэн чулууны петрологи", GIMAR - Geological Issues of Mongolia and Adjacent Regions (Монголын ба бүс нутгийн геологийн асуудлууд), 2020-10-23, vol. GIMAR-2020, pp. P-13

Хураангуй

Нарийнсухайтын нүүрсний орд нь Өмнөговийн нүүрсний савд хамаарагдах (Д.Бат-Эрдэнэ нар, 1985) ба Өмнөговь аймгийн Гурвантэс сумын нутагт оршдог. Орд нь Нарийнсухайтын хотгорт орших ба ордын хэмжээнд дунд Юрын Оргилохбулаг (J2ob), дээд Юрын Шархотгор (J3sh), Доод Цэрдийн Өндөр-Ухаа формац (К1uu) формацууд тархсан

Зохиогч(ид): Б.Эрдэнэцогт, Э.Болормаа, Д.Нансалмаа, Н.Байгалмаа, Б.Бат, Л.Жаргал
"Geochemistry of Middle Permian Tavantolgoi sandstone: Implications for paleoclimate and provenance", Japanese Geoscience Union (JpGU) Meeting, Japan, 2020-5-26, vol. SCG55-03, pp. SCG55-03

Хураангуй

The Tavantolgoi deposit, which has more than six billion tons of coal reserves, is situated in southern Mongolia. In 2018, more than 22Mt coal was produced from the deposit. During the exploration program completed in 2017, eighteen sandstone and two andesite samples for petrographical and geochemical analysis were collected from the upper part of coal-bearing Middle Permian Tavantolgoi Formation, which was intersected completely by 960 m deep bore hole. Petrographically, the sandstones are classified as litharenite reflecting relatively weak weathering intensity in source area, probably due to arid or semiarid climate conditions. Provenance analysis indicates that the sandstones are sourced from transitional arc and undissected arc that were probably formed during the closure of Paleoasian ocean between southern Mongolia and North China block. Geochemistry of major oxide and trace element result are summarized as below. CAI values from major oxides of the studied samples vary between 66.7 and 81.5 with an average of 77.0, reflecting weak to moderate intensity of weathering in source area. The plotted data on A-CN-K diagram displays that sandstones were sourced mainly from early Permian andesite and dacite, which are widely distributed around Tavantolgoi. It is also supported by Al2O3/TiO2 (avg. 19.6), TiO2/Zr (avg. 57.7) and petrographical study. C-value, indicator of paleoclimate, in the sandstone ranges from 0.15 to 1.3 with an average of 0.50, suggesting semiarid and semiarid to semimoist condition. However, some samples accumulated during the short period of arid and moist conditions. Rb/Sr and Sr/Cu of the studied samples are consistent with those of C-value. In addition, Sr/Ba (avg. 0.56), Th/U (avg. 2.8) and Ni/Co (avg. 2.0) of the samples suggest that the sandstones were deposited in paleoenvironment with fresh and oxic water.

Зохиогч(ид): E.E.Bolormaa, Б.Эрдэнэцогт, Д.Нансалмаа, Н.Байгалмаа, Б.Бат
"ДУНД ПЕРМИЙН ТАВАНТОЛГОЙ ФОРМАЦЫН ЭЛСЭН ЧУЛУУНЫ ПЕТРОГРАФИ, ГЕОХИМИЙН СУДАЛГААНЫ ҮР ДҮН" , vol. 17 (519), no. 17 (519), pp. 124-144, 2019-12-20

Хураангуй

Middle Permian Tavantolgoi coal deposit lies in southern Mongolia and has more than 6 billion tons of coal including significant tonnage of coking coal. In 2017, exploration bore holes were drilled at Borteeg, the largest syncline of the deposit. Eighteen sandstone and two andesite samples for petrographical and geochemical analysis were collected from coal-bearing sequences that were intersected by 960 m deep bore hole. The sandstones are classified as litharenite suggesting that weathering intensity in source area was weak, probably due to short transport distance coupled with relatively arid to semiarid climate conditions. Provenance analysis (Q-F-L, Qm-F-Lt, and Qp-Lvm-Lsm diagrams) suggests that the sandstones are recycled sediments derived from transitional arc and undissected arc that were formed during the closure of Paleoasian ocean between southern Mongolia and North China block. The average value of CIA for the samples is 74.1, reflecting relatively weak intensity of weathering in source area, which is consistent with the results of petrography. The plotted data on A-CN-K diagram displays that sandstones were sourced mainly from Early Permian andesite and dacite, which are widely distributed around Tavantolgoi. It is also supported by Al2O3/TiO2 (avg. 19.6) and petrographical study. To infer tectonic setting, two multi-dimensional discrimination diagrams were used. The results suggest that the tectonic setting of Tavantolgoi syncline, in which the studied sandstone was deposited, was rift.

Зохиогч(ид): Н.Байгалмаа, Д.Нансалмаа, Л.Жаргал, Б.Эрдэнэцогт, Д.Алтанцэцэг, А.Баатархуяг, М.Номинцэцэг
"Нарийн сухайтын ордын нүүрс агуулагч элсэн чулууны найрлага, хуримтлалын орчин" Journal of Geological Issues (Геологийн асуудлууд), vol. 17 (519), pp. 104-111, 2019-11-1

gimar.num.edu.mn/?page_id=888

Хураангуй

Seven sandstone samples were collected from Middle Jurassic Orgilokhbulag Formation distributed at Nariinsukhait coal deposit and petrographical study has been completed. According to the results of study, the sandstones are classified into subarkose, sublitharenite and feldspathic litharenite. The sandstone provenance analysis suggests that the sandstones were deposited during the late stage of development of Noyon syncline, which is a foreland basin formed due to early Mesozoic crustal shortening. In addition, MIA suggests that during middle Jurassic time, weathering intensity in the source area of Nariinsukhait sandstone was relatively high, probably due to warm and humid climate.

Зохиогч(ид): Н.Байгалмаа, Д.Нансалмаа, Л.Жаргал, Б.Эрдэнэцогт, Д.Алтанцэцэг, А.Баатархуяг, М.Номинцэцэг
"Нарийн сухайтын ордын нүүрс агуулагч элсэн чулууны найрлага, хуримтлалын орчин" Journal of Geological Issues (Геологийн асуудлууд), vol. 17 (519), pp. 104-111, 2019-11-1

http://gimar.num.edu.mn/?page_id=888

Хураангуй

Seven sandstone samples were collected from Middle Jurassic Orgilokhbulag Formation distributed at Nariinsukhait coal deposit and petrographical study has been completed. According to the results of study, the sandstones are classified into subarkose, sublitharenite and feldspathic litharenite. The sandstone provenance analysis suggests that the sandstones were deposited during the late stage of development of Noyon syncline, which is a foreland basin formed due to early Mesozoic crustal shortening. In addition, MIA suggests that during middle Jurassic time, weathering intensity in the source area of Nariinsukhait sandstone was relatively high, probably due to warm and humid climate.

Зохиогч(ид): Э.Болормаа, Б.Эрдэнэцогт, Д.Нансалмаа, Л.Жаргал, Н.Байгалмаа, Б.Бат
"Дунд пермийн тавантолгой формацийн элсэн чулууны петрографи, геохимийн судалгааны үр дүн" Journal of Geological Issues (Геологийн асуудлууд), vol. 17 (519), pp. 112-123, 2019-11-1

http://gimar.num.edu.mn/?page_id=888

Хураангуй

Middle Permian Tavantolgoi coal deposit lies in southern Mongolia and has more than 6 billion tons of coal including significant tonnage of coking coal. In 2017, exploration bore holes were drilled at Borteeg, the largest syncline of the deposit. Eighteen sandstone and two andesite samples for petrographical and geochemical analysis were collected from coal-bearing sequences that were intersected by 960 m deep bore hole. The sandstones are classified as litharenite suggesting that weathering intensity in source area was weak, probably due to short transport distance coupled with relatively arid to semiarid climate conditions. Provenance analysis (Q-F-L, Qm-F-Lt, and Qp-Lvm-Lsm diagrams) suggests that the sandstones are recycled sediments derived from transitional arc and undissected arc that were formed during the closure of Paleoasian ocean between southern Mongolia and North China block. The average value of CIA for the samples is 74.1, reflecting relatively weak intensity of weathering in source area, which is consistent with the results of petrography. The plotted data on A-CN-K diagram displays that sandstones were sourced mainly from Early Permian andesite and dacite, which are widely distributed around Tavantolgoi. It is also supported by Al2O3/TiO2 (avg. 19.6) and petrographical study. To infer tectonic setting, two multi-dimensional discrimination diagrams were used. The results suggest that the tectonic setting of Tavantolgoi syncline, in which the studied sandstone was deposited, was rift.





Сул хараатай иргэдэд
зориулсан хувилбар
Энгийн хувилбар