Fossils of Mount Everest

The summit of Mount Everest, the highest point on Earth, is a sea floor. That may come as a surprise; after all, a sea should be at sea level. In practice, there is some flexibility on this. Three seas are below sea level: the Dead Sea, the Salton Sea and the Caspian Sea. All are salt water lakes which carry the name sea. There is a fourth one, the Aral Sea, which is above sea level. Its water surface (at least what remains of it, after one of the biggest environmental disasters of the 20th century) is currently 42 meters above sea level, and it can therefore claim to be the highest salt-water sea on Earth. It is still some way off Everest though. There is one fresh water lake which is called a ‘sea’: the Sea of Galilee, but it is also below sea level. Lake Baikal is called ‘sea’ by the locals, but not in its official name – if it did, it would have been the highest sea on Earth, at 455 meters. The highest fresh-water lake on Earth is reported to be the crater lake of the Argentinian volcano Ojos del Salados which is at 6930 meters. However, it is rather small, at 35 meters, and by definition should be called a pond rather than a lake. Cerro Tipas Lake at 5950 meters is the next best candidate. There are some higher bodies of water in the Himalayas but they are ephemeral. But every single one of them is topped by the summit of Everest. It is perhaps a bit sobering to think that people who sacrifice their fortune and potentially their lives in order to climb Mount Everest, end up standing on a sea floor.

A sea floor should be lower than the sea it floors. Clearly, things have happened here that turned a sea floor into the roof of the world. The story behind this involves the highest fossil hunting on the planet, and not one but two lost oceans. It shows how trilobites managed to beat Nepal’s famous Sherpas, by hitching a ride with a carrier, becoming cargo to the mountain itself.

The presence of marine fossils near the summit of Mount Everest has entered the domain of common knowledge. Many posts, articles, and newspapers state that sea shells are found at the summit. But few give the source of their information – it is just something that ‘everyone knows’. And there is confusion about the fossils of Mount Everest. Shells are commonly mentioned, of varying sizes. A few sites mention ammonites, and I even found one that claimed the presence of fish. Try to find the source of their information and you quickly hit blanks and dead links. Who did the fossil collecting? Most people climbing Mount Everest do not go there to hunt for fossils. Their goal is to reach the summit – not to bring down the mountain. On the way up, you don’t want to carry rocks with you. On the way down, your main aim is staying alive, while frozen and oxygen-deprived. Where are the fossils of Mount Everest? And what are those fossils?

Facts

First, let’s clear up some confusion. How did a mountain shared between Tibet and Nepal end up with an English name? You can blame the Royal Geographical Society for that. This was the age of the exploration, and what is the point of exploring if you can’t give names? Marquez’ master piece, One hundred years of solitude, describes when the world was so recent that many things lacked names, and in order to indicate them it was necessary to point. This was not the British way. Names were needed. Mount Everest had not been noticed at first as being particularly impressive. The exploring had to be done from a considerable distance, from Tibet, as the explorers were not allowed entry into Nepal. Foreshortening meant that other peaks appeared taller. In the 1840’s, the first indications appeared that a distant peak could be taller than any other. For a while it was called ‘peak b’, and later it became ‘peak XV’, but that wouldn’t do. When no local name could be identified, it was finally named after George Everest, Surveyor General of India. The pronunciation evolved, with the long ‘e’ becoming a short one, but otherwise the name stuck. The new pronunciation had a ring to it: it sounded like a special place.

However, unbeknown to the explorers, a Tibetan name was already in existence. It was Qomolangma, and that name is now often used. Nepal has since adopted yet a different name, Sagar-Matha. Pick your choice: whichever name you use, at least you no longer have to point.

And what about the height? Nepal and China, who share the summit, quote different numbers for it. Nepal uses the traditional 8848 meters. China claims it is only 8844 meters. The first number refers to the actual altitude climbers reach when standing (very briefly – there is a queue) at the summit. They are standing on 3-4 meters of snow. The second number gives the rock height which is a more stable way to measure a mountain – but it isn’t as high so it didn’t catch on. People who climbed the mountain from the Tibetan side would find their achievement listed as 4 meters less than those climbing the same mountain from Nepal. When spending a fortune, such details matter.

The 1924 Everest expedition. Back row, left to right: Andrew Irvine, George Mallory, Edward Norton, Noel Odell, and John Macdonald. Front row: Edward Shebbeare, Geoffrey Bruce, Howard Somervell, and Bentley Beetham.

But regardless of the name and the height, Mount Everest is a very dangerous mountain. The sheer number of people climbing it in the brief annual climbing season does not help. But the statistics of the mountain are sobering. For the Sherpas, the fatality rate is between 1% and 4% per year. Avalanches during the pre-season preparations are especially deadly. Almost 300 people have died on Mount Everest since 1950. Among them is the NASA astronaut and astronomer Karl Henize – but many other names could be mentioned. George Mallory, who disappeared near the summit together with Irvine in 1924, was born very near to where I now live. The chase of Everest connects the world.

The layers of Everest

The triangular mountain is instantly recognizable. If you haven’t studied the shape in detail, try this gigapixel view. But it is easy to miss the detail in the mountain. There are several layers. For instance, there is a region with inclined layered bedding, a bit below the summit, clearly visible at the bottom of the summit pyramid.

The second most famous pyramid in the world

The structure of the mountain is a bit hidden behind the snow. Sweep the snow away, and four main layers appear. The same layers are also visible in the other mountains in the area.

Source: http://www.earthsciences.hku.hk/shmuseum/earth_evo_08_2.5.2.5.php RF: Rungbok formation; ES: Everest Series; YB: Yellow Band; OF: Qomolonga Formation (Everest limestones)

The layers are colour-coded in the drawing shown here. The bottom layer is colour-coded in brown, and labelled ‘LG+RF’. ‘RF’ stands for Rungbok Formation and ‘LG’ is a granite. RF is a gneiss: rock partly melted and metamorphosed under high temperatures (up to 500 C) and pressure, deep below the mountain. The granite was molten crustal rock from below which pushed its way up into this layer, much like granite complexes have done at the heart of every mountain chain. A low-angle (almost horizontal) fault separates the layer from the one above, which is colour-coded in green. This layer is called the Everest Series (ES), and it consists of sedimentary rock which has been metamorphosed at reasonably high temperatures. Above this, in yellow, is the so-called ‘Yellow Band’. This is the layered bedding which was mentioned before. It is a limestone, formed from a shallow marine sediment, heated to become a marble. Above this is another near-horizontal fault, and above this is an almost unmetamorphosed layer of limestone here called ‘QF’ for Qomolangma Formation, which forms the summit of Everest. The layers have moved around: the two faults are planes along which the layers have been sliding into their current position. The upper layers didn’t form exactly here, nor did they form in the same place. They are short-distance migrants.

Look at nearby mountains, and the same layers may be seen in the same order, although not at the same altitude. From south to north, the layers decline in altitude. The mountain building that pushed them up in the first place, caused by crustal thickening and intrusion of the granite, was strongest around Mount Everest but less severe further north. The fact that the layers don’t invert shows that in this location, the sliding was a simple process. There was no turn-over of layers as happened elsewhere, and as is seen in the Alps or Caledonian mountains. Around Everest, the upper sediment that has been least metamorphosed is always at the top. But few mountains are high enough to reach them: in most cases, erosion has removed this layer completely. There are nine mountains over 8 kilometer high in the high Himalayas. Of those, 6 still have a sedimentary layer at the top.

The Tethys Ocean

The top layers of Mount Everest are made from a marine sediment: a sea floor. But which sea? Or rather, which ocean? To answer this, we need to go back to the heady days when the Himalayas formed.

The Himalayas were a long-delayed consequence of the break-up of Gondwana. Australia, Africa, South America, India and Antarctica were all together in this supercontinent. (The world rugby competition between Gondwana and its northern-hemisphere counterpart, Laurussia, must have been a very one-sided affair!) Gondwana began to break up along the east coast of Africa where a fault grew into the Indian Ocean. In the process, a fragment was split off and became adrift in this new ocean. The fragment split further, into Madagascar and India. Madagascar stayed behind, but the fault behind India rapidly widened into an ocean and India was pushed forward, north. Between India and Asia was the Tethys: a worldwide, equatorial ocean running from China to Central America.

So India went across, closing the Tethys in the process and forming the Indian Ocean behind it. The seafloor that was uplifted and shifted to Everest was from the Tethys. It wasn’t the deep ocean basin: that was mostly subducted. The mountains grew from the continental shelf, and pushed up the sediment that was lying on it. The Tethys just disappeared. A few scars remain which trace the lost ocean. Some have already been mentioned: the Black Sea, the Caspian Sea and even the Aral Sea trace out the line where the ocean once was.

This is the basic view, In reality, things were a bit more complicated. I’ll come back to that.

Collision

50 million years ago India completed the crossing, failed to stop, and crashed into Asia. The collision happened in two phases. First, India hit an island chain. This was a volcanic island arc that had grown out of the subduction zone. The island arc left its sign in northern Pakistan. Later, India hit Asia, beginning in the northwest and ending in the northeast, in a drawn-out process. Originally, India had moved at break-neck speed, covering the distance at up to 20 cm per year. By the time of the initial collision, India had slowed down to 5 cm per year. This was still well above the speed limit for safe continental docking, though. The continental plate of India slid underneath Asia, and crumpled. The Himalayas are the crumple zone of that collision. The granite that forms the heart of the Himalayas consists of the Indian plate, melted at the high pressures at the bottom of a crust thickened to 70 kilometers.

The collision left India a lot smaller than it used to be. At 5 cm per year, India has lost 1000 kilometers over 20 million years. And still it is moving. It is hard to stop a continent.

So the Himalayas grew from below. In the process they pushed up the layer of seafloor sediment. Once the new mountains pulled in the rains, erosion attacked them. It removed the material from the top. In consequence, very little of the old seafloor that formed the upper reaches remains: only those 6 of the highest peaks just reach the Tibetan marine deposits. The rest of the old sea floor has been carried away by the giant rivers of the Himalayas, and returned to the Indian Ocean.

Fossils

The ancient sea floor will have incorporated the organic remains of ocean life. Fossils are relatively fragile: they can survive a modest amount of heating of the rock, although it may push then out of shape. But there are limits. You expect fossils in sedimentary rocks and in mildly processed metamorphic rock. By the time the rock becomes greenschist, any fossils will be gone.

A schist from high up on Mount Everest. Source: https://palaeomanchester.wordpress.com/2017/12/14/reaching-new-heights-with-collecting-everest-specimen/ It was collected at around 8 km altitude and that is impressive enough. But it is a schist and as such contains no fossils.

The lower layers of Everest are indeed greenschist, and are not great for fossils. The granite was injected from below and has been through worse: no fossils here. The Yellow Band is a marble, heated enough that only microscopic fossils may be left. The upper-most layer is limestone and although it has seen elevated temperatures and pressures, it remains suitable for fossils – if you don’t expect too much! It is found above 8600 meters.

The most interesting fossil rock of Everest will therefore be those nearest the summit. But they are also the hardest to get hold off. You can’t just jump on a plane to go collect an Everest summit rock! Luckily, we don’t entirely depend on the mountain itself: because the layers tilt downward towards the north, the same (or similar) rocks can be collected at slightly more reasonable altitudes. The Rongbuk Glacier in Tibet is such a place, and a lower layer is named after this location. But in the end, the fossil scientists wanted rocks from the mountain itself.

The first rocks from the upper layers were collected already in 1922, at an altitude of 8200 meters. More were collected in 1924, on the very day (and the same expedition) that Mallory and Irvine disappeared into the clouds. There were more samples collected over the next years, but many were stolen in 1939 and the notes describing them destroyed two years later. Expeditions of various nationalities brought back new rocks over the next decades.

The limestone is light in colour. It consists of layers of bedding, as narrow as a few millimetres, with alternating sand and calcareous (chalk) bands. The bands have colours varying from white to dark grey. The sand seems to have come from eroded granite: it was an erosion product from the land, brought down by rivers and collected in sand banks. It comes from mountains that came before the Himalayas, but how much earlier is impossible to tell.

Both the sand and the chalk contain fossils, tiny but clear. ‘Tiny’ here means that you need a microscope to see them: the sizes are something like a millimetre. It is quite a contrast with the size of the mountain!

Here are two examples, from the work of Professor Ganser, Geology of the Himalayas (1964) and reproduced by Noel Odell in 1974, in the Geological Magazine. (Click on each image to see the full resolution.) Odell was one of the original members of the 1924 Everest expedition. Both examples show fragments of crinoids. Crinoids are better known as sea lilies; their relatives include starfish and sea urchins. Sea lilies have been around since the Cambrian. Nowadays, they are found in deeper water, below 200 meters, but in the deep past they lived in shallow waters, and formed complete forests. Limestone beds can be made up entirely of such creatures: they were that abundant.

A sea lily, from the Gulf of Mexico. Organisms related to this one were abundant in the sediments that became the summit of Mount Everest. Photo: NOAA

Material from the Yellow Band has shown that it too contains up to 5% crinoid fragments. Other fossil fragments were found in the limestone: trilobites, brachiopods (lamp shells), and ostracods (small shrimps). Below about 70 meters below the summit there is a layer that formed from trapped sediment, 60 meters thick. The sediment was caught in a biofilm, probably from cyanobacteria (algae). This kind of bacterial mat is called a thrombolite, and forms in very shallow marine water. The thrombolite bed forms the bottom of the summit pyramid, including the ‘third step’.

The highest rocks that have been brought down were collected from 6 meters below the summit! They were collected in 1997 by a Japanese climber, M. Sawada; the analysis was published by Harutaka Sakai and collaborators. Two images from their work with fossil fragments are shown here.

The left image shows a polished slab of the summit limestone. The bar at the bottom is 1 centimeter. It shows bedding and faulting; fractures are filled with calcite. On the right is an enlarged polished surface showing crinoid and brachiopod fragments; the bar is 1 mm.

Left: grainstone with skeletal grains of trilobite (T), crinoid (C), ostracod (O) and fecal pellets (P). The bar is 1mm. Right: T trilobite fragments with the typical threefold arched shape. The bar is 0.1mm.

The Tethys and what really happened

How old are those fossil fragments? You might expect it to have the age of the formation of the Himalayas: some 40 million years. But no. The fossils are Ordovician to middle Cambrian, around 520 to 450 million years old. These dates have been confirmed by analysis of zircon grains of the Yellow Band. The sea floor, or rather the continental shelf, that became the summit of Everest was ancient! It was much older than the mountains themselves. The sediment had been on the sea floor for a very long time, before India came and scooped it up.

There is something funny here. The Tethys Ocean first formed around 275 million years ago. That makes the ocean considerably younger than the age of the fossils. Mount Everest couldn’t have come from the Tethys! The fossils lived when the ocean wasn’t there yet. The typical life time of an ocean is 200 million years: by that time, the oceanic crust has cooled so far that it becomes denser than the mantle below, and it begins to sink. A subduction zone form which swallows the ageing ocean. The difference in age between the fossils and the Tethys correspond to this age. Mount Everest grew out of the previous generation of ocean.

Indeed, before the Tethys formed, there had been another ocean. Nowadays it is called the Paleo-Tethys. In those days, of course, the world was so recent that many things lacked names, and in order to indicate them it was necessary to point. Originally, Gondwana and Laurussia were separated by this Paleo-Tethys.

Around 290 million years ago, a fault developed in Gondwana. It became a spreading ridge and experienced intensive flood basalt eruptions. The area to the north of the spreading centre split off from Gondwana. It was a fairly thin, long fragment, consisting of Turkey, Iran, and Tibet. Behind them, the spreading ridge quickly became an ocean: this is what became the Tethys (sometimes called the Neo-Tethys). The flood basalt was carried with: the remnants can be found as the Panjal Traps in Kashmir. The cause of this early split of Gondwana is disputed. There is no strong evidence for a mantle plume. It may have been an older, passive fault which became activated when the old Paleo-Tethys began to subduct, and started to pull on Gondwana.

The fragment that included Tibet moved towards Asia, in the process closing the Paleo-Tethys ocean in front and opening the Tethys ocean behind it. 200 million years later, the process replayed itself. Again a subduction zone had formed as the Tethys was reaching the end of its life. Again Gondwana spit, this time terminally. India declared independence and started its journey towards Asia, chasing after Tibet.

The collision now occurred in stages. First, the remnants of the Tethys were swept up as the fragment of Tibet was driven into Asia. This formed the first mountain range, the Trans-Himalayas, around 55 million years. The range is still there: it lies north of the high Himalayas, starting from Kasmir. It runs parallel to it for over 1500 kilometers, with peaks over 7 kilometers high. The range lacks the clear structure of the river valleys of the high Himalayas. This is because it formed first, before the rivers were there. The rivers began to flow from the range, including the Indus. Immediately to the south, the Tethys-Himalayas were also uplifted. This included the old sea floor. The process here was gentle, with little metamorphism.

Next, India arrived. This collision threw up the High Himalayas, south of the Tethyan range. The Indus and Brahmaputra rivers were already there, flowing from the Trans-Himalayas and through the Tethys-Himalayas. Both cut through the newly rising mountains: you can see that they originate behind the high mountains, showing that they predate it. The rising was a prolonged process. The current high Himalayas were build on granite emplaced around 20 million years ago. The rising of the high Himalayas continued in phases, and is still on-going. India isn’t finished yet.

Source: wikipedia

The progressions of oceans is still seen in the Himalayas. The shore of old Laurussia became the Trans Himalayans. The continental shelf of the Paleo-Tethys was uplifted to form the Tethys-Himalayas. The new shore line facing the Tethys ocean became the High Himalayas, underplated by the Indian subcontinent.

So how did the Paleo-Tethys sediments end up on Everest? You may blame the near-horizontal fault that runs between the limestone of the Qomolonga Formation and the Yellow Band. It provided a low-friction contact. As the Trans Himalays rose up, the limestone layer slid down, towards the south. When the High Himalayas formed, the old Paleo-Tethys floor was ready and waiting. The mountains formed underneath it, sediment from an ocean that had vanished in the earlier collision.

Raising the roof

When you climb Mount Everest, you are not just reaching the summit of Earth. It is also a journey back in time. The mountain is young, as mountains go: the granite at its heart is no more than 24 million years old. One day, erosion will have taken it down to the level of this granite. But not yet. For now, remnants remain of the older surface that was here before the mountain grew up. The fossils, microscopic and broken down they may be, show that this surface is old as the mountains, by manner of speaking. They date back to the Cambrian. The Indian Ocean is the grand child of the ocean in which they lived. The fossils survived not one but two continental collisions.

The summit of Mount Everest is so much older than the mountain itself. It was deposited when even Gondwana was young. Climbing Mount Everest takes you to a time when life was young and many things lacked names. Even if the fossils are only a millimetre across – it is worth bringing some down, back to the sea where once they came from.

Albert Zijlstra, June 2018

232 thoughts on “Fossils of Mount Everest

  1. this is a video I came across from 2014, ureal to thiink of Madame Pelee’s reorganising of this area, I wonder what the new look willl reveal in a few years time, as we all know humans spirit will forget and rebuilt,

    • “Spirit?” Remember, Lucy FELL out of the tree. She didn’t go willingly.

      “forget and rebuild?” Well, we are a stupid species after all. It’s the one thing we excel at.

      Social anthopologists will fight you over this one… but Neanderthal had an AVERAGE cranial capacity of around 1500cc. The same for Cro-Magnon. Modern humans average about 1250cc cranial capacity. The general explanation is that we are more efficient with our brains… {A suspiciously species-centric viewpoint in my opinion} but I think it’s just a gradual trend towards mediocrity.

      Homo Sapiens (Thinking Man) is for all practical purposes, EXTINCT. We are Homo Stultus… (Stupid man).

      Personally, I think the first 15 minutes of Idiocracy accidentally got it right.

      • when breeding animals, which we are at the end of the day, nature has a tendency to breed average, a few really good ones, mostly average and1/3 of below average(being proper) so whatever happens in our living space(earth) we will survive. When Lucy fell she was expecting a knight in shining armor to catch and set her down gently, well the male species was not apparently developed at that point, someone did stuff up there

      • Sort of sexist, but I sort of have to agree, based on observation.

        In the previous comment page I noted that I had a room-mate that broke his arm while attempting to be amorous in a tree when base security interrupted them. “Doing stuff” up in a tree is not usually a good idea. Especially next to a secure compound where a sentry can sort of see and can definitely hear suspicious sounds out in the trees.

        And yes, alcohol was definitely involved. It’s amazing what alcohol can convince you to do.
        (No, I am not a teetotaler, I love alcohol. I just can’t drink it very often due to medications.) → I also love grapefruit juice, and can’t drink it for the same reason. The flavor molecule in grapefruit juice interferes with normal enzyme functions in your liver and can either greatly enhance or retard the bioavilibility of medications. Orange Juice apparently doesn’t do this though they are closely related.

        • the male most likely got carried away with recreation,, females have a tendency to make sure things are safe, for procreation is after all survival of the species

      • I don’t know the capacity of Einsteins, but he used only 10%, so size is really academic

  2. this video is from before the current eruption and talked about the diferent flows on the Island,

  3. interesting to note that he says the paths of decent are only good for the first flow….. secondary flows will be dependent on where the first one went….. wish there were time machines… i’d pop back and say “Just wait till You see what’s coming up!” and who says Lucy wasn’t pushed out of the tree… falling… my … nevermind. Best!motsfo

    • The main flow of fissure 8 didn’t follow the line of steepest descent. I am beginning to think that maybe part of the problem owes to the land elevation data being outdated because in the best elevation digital model existing for Big Island and the one I’m guessing the steepest descent is based on there are some recent man-made structures that arent present there like quarries or maybe highways that affect topography and also the most recent eruptions. Maybe an update of the geographical data should be necessary.

  4. there are no new video’s and some are blocked, it is either no news is good news, I don’t like to think of the other.
    With older stuff there is often interesting things tht crop up, hindsight hmm

  5. On HVO’s most recent overflight, they noted that the lava channel is apparently visibly incandescent all the way to the four corners area and has started to channelize at the ocean entry. They dont have a picture but there is a thermal image:

    This eruption is really turning into something significant because it has a flow rate of near or above 100 m3/s continuously for 2 weeks, which has only happened once on kilauea in recorded history before, in 1840. And yet the lava fountain is rarely even close to 100 meters tall, compared to the 300-600 meter fountains of other eruptions with similar eruption rate. I wonder what HVO will say about that in the future. It might also explain why there aren’t any cones on the 1840 fissure too, maybe that eruption was characterized by low fountains with massive volume too.

    • It is normal that as the cone builds the fountains decrease in height. The cone surrounds a mini lava lake and this acts as a larger exit hole. The height of the fountains decreases with increasing size of the exit hole.

      The flow rate is the size of the hole times the exit speed. So the speed is given by the flow rate divided by the size of the exit hole.

      Approximately, for a 50-meter tall fountain you need an exit speed of 30 m/s. For 100 meters you need 45 m/s. For a flow rate of 100 m^3/s and a speed of 30 m/s you need an exit hole of 3 m^2. The equation is A = Q / (2 g h)^0.5 where A is the area of the hole, Q the flow rate, g gravitation acceleration (10 m/s^2) and h the fountain height. In practice the exit speed must fluctuate because the fountain comes in bursts. As Q is an average flow rate, you should also use an average height for the fountain, not the peak height.

      • I agree with Albert.
        If this is a wide diameter pipe connecting the source of lava to the vent, probably because there was the earthquake/landslip combined with a larger than usual source of hot lava then flowrates would be high but exit pressure relatively low hence smaller fountains. If the lava is hot enough to maintain or increase the diameter of its feeding tube then flows can increase whilst fountaining will decrease.

        I suspect the flow is controlled by flows under very high Reynolds number so highly dependent on diameter rather than pressure per se.

  6. One thing to consider… this is effectively a small scale version of a flood basalt eruption. Hopefully, the only one we will see in our lifetimes.

    • If you are young enough not to have experienced Holuhraun, you may not be a reader of this blog yet..

    • I would be surprised if holuhraun is the only effusive eruption approaching that size in the next 100 years. If the plume is having a surge like the evidence suggests then there will probably be at least a few more eruptions of 1 km3 in size, and likely one that is several times larger. A skaftar fires sized eruption is not likely but definitely isn’t out of the question either.
      Last time there was a magma pulse we got the several km3 askja plinian eruption and rifting event, as well as a rifting event from bardarbunga, and a VEI 4 from both hekla and thordarhyna. The 1918 eruption of katla might have been part of this too.
      Before that there was the skaftar fires towards the end of a plume surge that also included the hekla 1776 eruption as well as the myvatn fires, and maybe some other stuff I am forgetting. Before that again there was veidivotn 1477.

      So far there have been about 3 eruptions around 1 km3, holuhraun and grimsvotn and (possibly) gjalp, and eyafjallajokull was quite big too even if it was slower going. So we can expect maybe a few more big eruptions including one that is significantly bigger than holuhraun. Based on the very rough cycle of ~300 years between eruptions on the dead zone, that is probably going to be the location of the eruption in question. It is possible that reykjanes will reactivate too, after the almost-eruption last year.

  7. Now from the dramatic to the slightly surreal, the future of GPV. One person interviewed complained about the danger of something exploding in your backyard. And he lived on a volcano! (Admittedly, that was an interview from 1991.) The argument about PGV being closes to houses also seems to be slightly outdated.

    http://www.hawaiinewsnow.com/clip/14409843/debate-underway-about-future-of-puna-geothermal-plant

    Of course, there won’t be a shortage of near-surface geothermal energy for the next year.

    • If PGV supplied 20% of the islands electricity, what was the rest?

      It bothers me a bit that the news is so obsessed with a well breaking and releasing H2S into the air (where it will be harmless within 100 meters of the well if it doesn’t just burn immediately) but no-one talks about how coal fly dust is like asbestos mixed with lead and arsenic and is more radioactive than spent nuclear fuel… I really can’t think of any renewable energy source that has so many hazards associated with it that it is worse than fossil fuel waste. Even nuclear isn’t that bad if you actually do it right (Chernobyl wasn’t done right and neither was Fukushima). But coal is undeniably bad for the environment and yet we allow it to be burned in residential areas (at least in Australia we do… Our politicians probably enjoyed being on santas naughty list. In the future people will think we are all pyros because we like burning things so much)…
      I don’t get why we don’t use the massive pre-made fusion reactor in the sky, it is basically infinite energy on our scale… The amount of light that hits every square meter is enough to boil tungsten in seconds if it was concentrated to a small point, there really isn’t an excuse except for the big oil companies paying off the politicians to do nothing…

      Wow this really took a tangent but still, it is just silly how scared we are to try new things that we make up fake hazards to justify using actually dangerous things…

  8. This is the text of todays Newsletter by my putzschule.ch, quoting your gastro-geological article!!! I like your mix of the surreal and the really sure . . . Katharina Zaugg

    Liebe staubfreudige Putz- und Lesegemeinschaft

    Weltweites vulkanisches und geologisches Geschehen rückt meine Beschäftigung mit Staub nach und nach in passende Dimensionen. Abstauben ist ein vergänglicher Einsatz, beständig ist nur der Staub.

    Es gibt eine Art langsame Vergänglichkeit, z.B. die Millionen Jahre dauernde Wanderung von Kontinenten. Aber obwohl Indien sich nur langsam von der südlichen Landmasse Richtung nördliche Landmasse bewegte, reichten 5 cm/Jahr 50 Millionen Jahre später noch, um das Himalaya-Gebirge hochzudrücken, wie ALBERT, Autor des Artikels “Fossils of Mount Everest” lakonisch sagt: Auch 5 cm/Jahr sind noch keine ideale Anlegegeschwindigkeit für Kontinente. Die sind eben nicht so leicht zu bremsen.

    Interessanterweise finden sich auf den höchsten Himalaya Gipfeln Fossile von Meeresböden.

    Was den Autor zu einer weiteren lakonischen Bemerkung führt: “It is perhaps a bit sobering to think that people who sacrifice their fortune and potentially their lives in order to climb Mount Everest, end up standing on a sea floor.” (Übers: Es mag ernüchtern zu überlegen, dass Menschen ihr Vermögen und ihr Leben aufs Spiel setzen, um den Everest zu besteigen – und zu oberst auf einem Meeresboden stehen.)

    Quelle ist die genial gut geschriebene und informative Webseite: volcanocafe.org/fossils-of-mount-everest

    Da bleibe ich lieber zuhause und putze, da bin ich am Ende auch wieder bei Null. Es ist kostengünstiger und weniger gefährlich. Zudem gefährde ich nicht das Leben von Sherpas, von denen viele umkommen beim Transport des Materials, das die Kundschaft mitschleppt. Ich fühle mich bestärkt darin, es mir auf 220 m ü M bequem zu machen!!!

    Wie schnell hingegen Vergänglichkeit gehen kann, beobachte ich zur Zeit auf Hawai’i (von meinen 220 m. ü. M. aus via Internet): Im April begannen intensive Beben, im Mai sank im Vulkankrater der Lavasee, entlang eines Dykes in der Ebene öffnete sich eine Spalte in der Erde nach der anderen. Daraus sprühen Lavafontänen, bilden Flüsse, die ganze Gebiete bedecken. 1100 Grad heisse Lava wälzt sich über Wälder durch Seen, ins Meer, frisst Gebäude und alles was lebt.

    In einem Phoenix-Film “Letzte Paradiese” kann man das Geschehen von 1730 auf Lanzarote nachvollziehen, wo innert 6 Jahren 100 neue Vulkane entstanden.

    Schnell wie der Blitz schlug Anfang Juni Vergänglichkeit in Guatemala zu, wo der Ausbruch des Vulkans Fuego Augenzeugen an das damalige Geschehen von Pompeji erinnert, 1 Mio. Menschen sind davon betroffen.

    Auch auf Hawai’i verteilen sich Gase und Aschen mit den Winden und bedrohen Atem und Haut. Und die Lava verbrennt nicht nur Natur, auf den Bildern sieht man, wie aus brennenden Häusern schwarze Rauchschwaden aufsteigen: der ganze verbaute Kunststoff geht in Rauch auf, eine weitere Sorge.

    Abstauben – Rezepte
    Wir können es drehen und wenden wie wir wollen: Putzen in seinem Vergänglichkeitsaspekt können wir uns nur versüssen, durch lustvolles Gestalten, grössere Zeit Intervalle, ökologisch versteht sich bei mir von selber. Das sind ein paar Anregungen.
    1. Staub als Staubfänger einsetzen: Grober Staub fängt den feineren ein. Erst, wenn er müffelt, muss er entfernt werden. Aber das dauert viel länger als man meint. Probieren sie es aus.
    2. In “Reinkultur” moniere ich die “Staubsammlung”: Sie grenzen eine beliebig grosse Zone ihrer Wohnräume vom Abstauben aus, stellen eine Karte dazu “Staubsammlung seit . . .” und lassen ihn reifen.
    3. Arbeiten mit besonderen Wässern
    Regenwasser, Quellwasser, oder Tautropfen aus Frauenmantelblättern wird in eine kleine Sprühflasche gesammelt, dazu auf 100 ml/1 TL reines Rosenwasser oder ein anderes Hydrolat, auf den Staublappen gesprüht, hüllt die Arbeit in eine angenehme Duftwolke, streichen, atmen, singen, schwingen, träumen. Wenn der Lappen voll Staub ist, einen frischen besprühen. Farben sind wichtig, denn: wir essen nicht nur mit den Augen, wir putzen auch damit.

    Held up for approval by our deamon. This happens to all first-time commenters but should only happen once – admin

    • Danke sehr! Von Everest bis zum Putzschule – das kann nur in der Schweiz.

      And it is very nice to know the writing is appreciated!

    • to live in a dusty enviroment and waiting for dust to accumulate is not healthy. I am sensible to the enrimomnet in my day to day live, before it was fashionable,I am most likely longer on this planet a lot of others here including you.
      I was brought up in Germany to use a language everybody understands, in this blog we use english, there are a lot of users who use different languages in their homes.

      • To be fair, Katharine did write her own text in English. And we do sometimes refer to material that is published in other languages. Obviously many people won’t be able to read it (unless using giggle) but the information may not be available otherwise. Hawaii is fine. Fuego less so.

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