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BarcaMSN t1_jc5tq32 wrote

Very nice, it's amazing how the Himalayas is just crumpled ground from the Indian plate smashing into the Asian plate.

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Wermine t1_jc6l5h7 wrote

>By 1967 most scientists in geology accepted the theory of plate tectonics. The root of this was Alfred Wegener's 1912 publication of his theory of continental drift, which was a controversy in the field through the 1950s.

Surprisingly recent.

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Volcic-tentacles t1_jc6lufa wrote

I was taught earth science by one the originators of tectonic plate theory, back in the 1980s.

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scruffye t1_jc7pm47 wrote

Yeah, I think the final nail in the coffin for those resisting it was when we finally got good data on the details of the sea floor and we could actually map out the forces that were driving plate tectonics. Also, science in general can be held back by older generations resisting new ideas. IIRC the theory of part of the heat in the Earth's core being caused by radioactive isotopes was basically dead in the water because Lord Kelvin refused to accept it, and his death finally allowed people to really start arguing for it.

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TonyzTone t1_jc7v0cp wrote

Isn't it crumpled ground from the Asian plate as a result of the Indian plate jamming underneath?

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JoHeWe t1_jc7xo3g wrote

IIRC, the Himalays are both the Asian and Indian plates crumbling. There're three types of plates touching: convergent, divergent, and transform (towards each other, apart from each other and alongside each other). There's two types of plates: continental and oceanic, of which the latter is much lighter .

The Indian plate and Asian plate are convergent and both continental. That means they generally just smash into each other, i.o.w. both crumbling. If one of them was oceanic, say Asia and the Pacific, the oceanic one would sink under the continental one, creating a valley or (Mariana) trench.

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KyojinkaEnkoku t1_jc6iigc wrote

You can see the ongoing collision of the Indian subcontinent into the Asian continent creating the Himalayas, fun fact: they're still getting bigger; Everest gets a 1/4th of an inch (6.35 mm) taller every year even with solar and precipitated erosion.

So every person who summits Mt. Everest is technically setting a new record.

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ZarafFaraz t1_jc6pi50 wrote

How do they even measure that?

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KyojinkaEnkoku t1_jc6pq5v wrote

Short Answer: GPS, I can explain further if you'd like?

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visualgeomatics OP t1_jc5lzem wrote

Source: GEBCO DEM, Sentinel-2 satellite imagery

Tools: Blender, QGIS, Global Mapper, Photoshop

Description: I combined sentinel-2 imagery with surface model data to cast light on it and create a pretty image that looks 3d. The map has lots of vertical exaggeration to bring out the topography, and I've coloured in the water, otherwise the image is a natural colour representation! Check out other examples on my instagram

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stovenn t1_jc7op1u wrote

Very impressive, a truly beautiful rendition.

Can I ask - Is it expensive to buy the Sentinel-2 imagery?

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visualgeomatics OP t1_jc89be1 wrote

You can download individual tiles for free but for large areas like this it would take quite some time to mosaic and clean seemlines. I purchases the eox cloudless dataset for the globe, it definitely wasn't cheap but I can map any area pretty quickly with it.

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AntiMemeTemplar t1_jc5yulp wrote

I never noticed Arabian Peninsula was this close to India

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Volcic-tentacles t1_jc6lygf wrote

Yep. There was maritime trade between them dating back to the origins of civilisation: thousands of years.

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ZipTheZipper t1_jc6jqf7 wrote

Interesting how the Indus and Ganges rivers seem to cut right through the continental shelf, like they keep flowing once they hit the ocean. Also interesting how the Shatt al-Arab (Tigris/Euphrates system) does not do the same.

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badlawywr t1_jc6kwyx wrote

I'd speculate this points to where the coastline was previously, perhaps during the last glacial maximum

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DocB404 t1_jc8jsxb wrote

I'll second both of you. It's the cut from when see levels were lower and it's freaking cool.

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mazdamurder t1_jc62ul0 wrote

So... Does this make India the Florida of Asia?

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puckamok t1_jc68egk wrote

Living in Georgia, I only wish we had the Himalayas separating us from the hot mess that is Florida.

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TorontoDavid t1_jc6v9km wrote

Can anyone explain the geological reason for the desert/dry area in north-west India?

What causes that?

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7sfx t1_jc79958 wrote

Aravalli Ranges. The desert lies in the rain shadow region. Monsoon rains are blocked by the mountains.

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Gatorinnc t1_jc6p9f6 wrote

What are the almost concentric five rings on the Indian plateau?

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ZarafFaraz t1_jc6pyc3 wrote

The watermark?

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Gatorinnc t1_jc7bnzo wrote

No,not that.

Zoom in to Central India. Five almost concentric raised elevations. Very big. Two side by side. Another pair below these. And one below these middle pair.

Almost like craters, but huge.

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Usual_Myanmarian t1_jc6x16n wrote

Wow! The Himalayas just straight up draw a line between India and Tibet.

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Gatorinnc t1_jc7cj58 wrote

Except that if you put the boundaries in the map, you will find that many Indians states go well into the Himalayas. Ladakh, Himachal Pradesh, Uttarakand and Arunachal Pradesh come to mind.

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BlackandBlue14 t1_jc87aa7 wrote

Amazing. What conditions are stopping Yemen and Oman from seeing the same level of greenery as India? I don’t see any obvious geographical obstacles to the rainfall that is clearly falling on India.

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Suryansh_Singh247 t1_jcz922a wrote

The low pressure region that forms over tibet during summer draws the monsoon winds from the Indian ocean towards the subcontinent, that being the main reason.

Also Oman does receive some rainfall which turns parts of it green but not as much the subcontinent.

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kforeman829 t1_jc96562 wrote

What’s with the triangle and near-perfect straight lines on the ocean floor east of India?

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Suryansh_Singh247 t1_jcz9ouy wrote

Areas that have been traced by deep sea submersibles. So basically the path of those vessels. Other parts of the oceanfloor haven't been traced hence blurry.

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Volcic-tentacles t1_jc6lpws wrote

Nice. Shame the watermark is right in the middle of the area that interests me (right in the middle of the Ganges valley). Designed to ensure Indian's can't use it?

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konjecture t1_jcbfffi wrote

Yea it’s another conspiracy against Indians to keep them from achieving superpower status.

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