वैज्ञानिकों का दावा 25 नहीं 80 मिलियन साल पुराना है हिमालय, इंडियन-यूरेशियन प्लेटों के टकराने से पहले हुई प्रक्रिया

ETVBHARAT

इंडियन और यूरेशियन प्लेटों के टकराने से पहले शुरू हो गई थी हिमालय बनने की प्रक्रिया, वाडिया हिमालय भूविज्ञान संस्थान ने अरुणाचल में किया रिसर्च

Transcript

00:00The major himalayan uplift is about 20-20 million years ago.

00:07And the maximum migmatites in the Himalayic fields are about 20-25 million years old.

00:16In the Harunachal Himalayas, we have found migmatites in the Himalayas, in the Lohit and Dibang Valley.

00:32After the date of this, we have found that these migmatites are about 80-70 million years old.

00:49The holes of the Himalayas, in the Asian and Asian plates, the crustal thickening of Himalayas had started.

01:07The crustal thickening of Himalayas has been made for the crustal thickening of Himalayas.

01:13Language issues, such as Kleiders – when and how the mill is made.

01:21The process of the work has ended on it, and the work has been wanted to all the work.

01:25We will discuss about the Organic Veteran sum of the Withgaineic Dr. Vickar.

01:31Let's talk about the work and the work that we have shared.

01:35The process of the plates and the collection of the mill.

01:38What are some of the questions that you have come in front of you?

01:43First of all, my name is ETV, my name is ETV,

01:47I would like to say that we have published a recent study in Arunachal in Himalaya,

01:53which has been published by the Journal of Geological Society of London.

01:57In this event, we have found that we believe that the major uplift of Himalaya

02:05is after the collapse of India and Asia.

02:10This means that our plate of India and Asia is about 55 million years ago.

02:16And after this collision, the crustle thickening and rocks,

02:22which we call Deformation in English,

02:25and uplift, is after 50 million years.

02:32And this means that in Himalaya,

02:36whether it is Western Himalaya, or Nepal Himalaya,

02:39mainly, we find the Migma Tites,

02:44and these Migma Tites,

02:46which were previously existed,

02:49the granitic rocks,

02:51which will become partial melt,

02:53and then cool.

02:55Now, the partial melt is 6 to 7 kilobar pressure,

03:00and around 600 to 700 degree temperature.

03:03And this is a partial melt,

03:06when our intense deformation is formed.

03:08And due to this deformation,

03:10our crustle thickening is formed.

03:12And due to this,

03:13our mountain building starts.

03:16So, it seems that the collision has been in 55 million years,

03:20and after that,

03:21our uplift started in 40 million years.

03:25And the major uplift of Himalayan,

03:27is about 20 million years.

03:29And the major uplift of Himalayan,

03:30is about 20 million years.

03:33And the maximum Migma Tites,

03:35that we get in Himalayan,

03:37are about 20 to 25 million years old.

03:41But,

03:42our recent study published,

03:45in Arunachal Himalaya,

03:48we have found Migma Tites,

03:50in Arunachal Himalaya,

03:51in the Lohit and Dibang Valley,

03:52we have found Migma Tites,

03:53which we have dated here,

03:54in our Wadiens Sansthan laboratory,

03:56which is a very world class laboratory,

03:58in our Wadiens Sansthan laboratory,

04:00which is a very world class laboratory,

04:02in our Wadiens Sansthan laboratory.

04:04And after this date,

04:06we have found that,

04:08these Migma Tites,

04:09are about 80 to 70 million years,

04:12of Migma Tites.

04:14And then,

04:16we have found,

04:17subduction related rocks,

04:19and these are subduction related rocks,

04:22that when the Indian plate,

04:24the Asian plate,

04:26was subducted,

04:28the density of the density,

04:30the oceanic lithosphere,

04:33melted,

04:34and then,

04:35it melted,

04:36from the surface.

04:37So,

04:38that type of granite rocks,

04:40are about 154 million years,

04:43and,

04:4470 million years,

04:45of granite rocks,

04:46are about 70 million years.

04:48So,

04:49we have found,

04:50that,

04:51the subduction related granite rocks,

04:53and the Migma Tites rocks,

04:55and,

04:56the Migma Tites rocks,

04:57and,

04:58the Migma Tites rocks,

04:59and,

05:00that,

05:01we have found,

05:02that,

05:03that,

05:04the subduction,

05:05and,

05:06that,

05:07that,

05:08that,

05:09that,

05:10the

05:13the

05:15desapareces,

05:16that,

05:17that,

05:18the

05:21crustal

05:22thickening,

05:23that,

05:24that,

05:25that,

05:26that,

05:27that,

05:28we have to realize that,

05:29that,

05:30that,

05:31that,

05:32that,

05:33that is,

05:34Sir, the Indian plate, the Indian parts, the migmatites, were mainly 20 to 25 million years of migmatites.

05:48But in Arunachal Himalaya, the first time we get migmatites.

05:53We understand that this is the cause of the shortening of our Arunachal Himalaya in India and Asian plates,

06:04the shortening of the crust, and the front side of the crust,

06:0870 to 80% shortening of the migmatites.

06:13This is why we have migmatites here.

06:22Although, in Tibet, we get old migmatites,

06:26some of them are found in some areas.

06:29This is the equivalent of our Arunachal Himalaya report.

06:34We can get to know that the Himalaya initiation,

06:38the Trans-Himalaya initiation,

06:43that was the first of the collision of Arunachal Himalaya.

06:48I want to know that if you are in Arunachal Pradesh,

06:52the land of Arunachal is a big hole,

06:54then we can see that the entire Himalaya is going to be 80 million years ago?

07:00Absolutely, because the roads of the lohit and the mountains of the lohit is called Gangdi's Betholet.

07:10We call it Gangdi's Betholet in Tibet.

07:12In Arunachal Himalaya, the rocks are called the lohit plutonic complex.

07:17This is called Gangdeez-Betholith

07:24This is called Ladakh-Betholith and Karakoram-Betholith

07:33This is called the Himalayan Arch

07:40The Himalayan Arch is a long 200 km long

07:44The Himalayan Arch is a similar type of Geochemical Characteristics

07:47These are from the Himalayan Arch

07:53The Himalayan Arch is the same

07:57But the event of the Himalayan Arch was reported in the first time

08:04The Himalayan Arch was reported at 8 million years ago

08:08But the Himalayan Arch is a growing stage

08:14The Himalayan Arch is also growing

08:16The rocks are also very soft

08:18They are still going to be均衡

08:22What is the reason for the rocks?

08:25or what is the structure of it?

08:28First of all, I would like to tell you

08:31that our Himalaya is a dynamic mountain belt

08:35and this dynamic mountain belt is because of

08:38that our Indian plate

08:41is converging towards the Asian plate

08:44and it is in motion

08:46Now, when you put a big rigid block

08:51then there will definitely be deformation

08:54and the deformation is mainly when we talk about

08:57the sub-surface where the pressure and temperature

09:00is more than that

09:01the deformation is ductile deformation

09:05that means high temperature and pressure condition

09:08rocks flow

09:09and as we come to the shallow crust

09:12the deformation is called brittle deformation

09:15so the brittle deformation in the shallow crust

09:18what happens is that one crust

09:20is overriding on the other crust

09:23such as the structure of the main central thrust

09:26here is the main central thrust

09:27and there is also the main boundary thrust

09:30and there is also the main boundary thrust

09:33so what happens is that the convergence

09:35which continues

09:37so what happens is that the structure of the time

09:40these structures

09:41are reactivated

09:43and the other

09:45the adjacent faults

09:46also the faults

09:48so the convergence

09:50of the faults

09:51the energy

09:52so the convergent

09:53is accumulated

09:54so the energy

09:55is released

09:56in the form of earthquakes

09:58which is a form of earthquakes, I believe that our Himalaya, which is a dynamic mountain, will be running.

10:08So our main focus should be, how we can make this Himalaya, how we can mitigate it,

10:19so that our human beings, or in the future, are going to be our earthquake resistant structures.

10:31So we should have a collaboration between the veganists and the Prashashan,

10:36in which we keep the Prashashan and the Prashashan,

10:41so that we can save more knowledge.

10:46Sir, one more question.

10:48What is the impact on the Himalaya?

11:00Sir, the impact on the Himalaya means that if any structure is active in Himalaya,

11:05like the main central thrust in Himalaya,

11:09it was active in Himalaya,

11:12and this was a reverse fault.

11:14It means that this block is going to override one another.

11:18So above the Himalaya, there were soft rocks in Himalaya,

11:22and we call it higher Himalayas.

11:28And in South Tibetan Detachment, we call it Tethian Himalaya.

11:32We call it Tethian Himalaya.

11:34The Tethian Himalaya because of the gravity of the Himalaya,

11:38the gravity of the Himalaya came down.

11:40The South Tibetan Detachment System has become a normal fault.

11:44Now, in these two faults in Himalaya,

11:46the major uplift in Himalaya has become a major uplift in Himalaya.

11:48So during the time of the time,

11:50the convergence and the stress is released,

11:54the faults are reactivated.

11:56It means that in Himalaya,

11:58the main central thrust in Himalaya,

12:00the main central thrust was activated.

12:02We call it the co-evil,

12:04and at the same time,

12:06the South Tibetan Detachment System was activated.

12:08Then, in the south,

12:10the main boundary thrust was activated,

12:12which was activated before 9 to 11 million years.

12:14The reactivation was 5 to 6 million years.

12:18The reactivation was activated before the first time.

12:20The reactivation was activated by the 5 to 6 million years.

12:22And the range of the Mohan,

12:26which is called the frontal range,

12:28we call the frontal range of Himalaya.

12:30There is our main frontal thrust,

12:32or the Himalayan frontal thrust.

12:34The thrust was activated by the first 1 to 2 million years.

12:38So, this is the sequential deformation

12:40along the Himalaya.

12:42What is the case of the convergence of the thrust of Himalaya?

12:44Now, what happens is that,

12:46because of these thrust faults,

12:50the energy is accumulated,

12:52and the time is released.

12:54And this process, I believe,

12:56will continue.

12:58And where you have asked about the collapse,

13:00the collapse means that,

13:02the collapse means that,

13:04the collapse means that,

13:06the gravity of the effect.

13:08And when will it happen?

13:10When our gravitational potential energy

13:12will become so much,

13:14that it will be difficult to sustain it,

13:16then the gravity will collapse.

13:18So, I think that,

13:20this is a problem.

13:22I think that,

13:24this is a problem.

13:26It is a problem.

13:28And it is a dynamic state.

13:30It is a problem.

13:32And I think that,

13:33it will continue.

13:34Thank you very much.

14:00so this is a new event that was done in the village in the Himalayas

14:04in the village and after this event came in front of the village.

14:08Thank you for your attention.

Category

Transcript

Recommended