Sheepy Dalek! Name that Lava XIX

Today i got the honor to post 2 riddles for your Friday entertainment again. During the next days you can expect an “answer”-ing post to those riddles like in the last 2 weeks.
Name that Lava #19
Current ranking:

7 Spica
6 DFMorvan
5 Sissel
5 Ursula
4 Diana Barnes
4 Talla
3Lughduniense
3 KarenZ
3 Cryphia
2 Doug Merson
2 Hattie
2 Schteve42
2 Irpsit
2 Stephanie Alice Halford
1 Inge B
1 Lisa
1 Jim
1 Luisport
1 Heather B
1 Jamie
1 Henri le Revenant
1 UKViggen
1 Alan C
1 Bobbi

Click on the image to enlarge the picture. Good luck!

Questions:
1. Name two lavas on the picture.
2. Name the volcano.
3. Name the countries most famous cultural celebrity.

AlanC´s evil riddle!
Current ranking:

6 Talla
5 Sissel
3 Henri le Revenant
3 KarenZ
2 Ursula
1 lughduniese
1 purohueso745
1 UKViggen
1 Carl
1 Spica

Here is a brainteaser by our Evil Riddle-master, who is on vacation.
Give me a short-back-and-sides and you will make me cry!
Who will cry?
What is the Evil One on about?
I am posting those 2 riddles. I have no clue about the image, but i have the answer to Alan´s riddle in a second email. Carl can join in, as can all the other dragons because they don´t know the answer. I will run around singing Ding Ding in around 24 hours time. For the answers to  NtL, my dragon master will have to do the favors.
Good luck!
Spica

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197 thoughts on “Sheepy Dalek! Name that Lava XIX

  1. 1159777 03/08/2012 22:34:58 27.7029 -18.0760 20 2.7 mbLg W EL PINAR.IHI [+]

    The epicentre it is said was in El Julan.

  2. Good morning/ evening or G’day
    We have had no rain here for three days! I am feeling well again and will be attacking the luxuriant growth on our back lane and garden before the forecast thunderstorms strike. 😀
    I think this may be why the Ancient Brits were so easy to overcome by the Romans, Vikings, Angles and Saxons and ultimately the French.
    All the iron age population had for protection from the New cold, wet climate was a blue vegetable paint called Woad and some smelly sheepskins and poorly shod feet.They would only come out and fight when the rain stopped. ( A throwback to this is in the sport of cricket when, at the first drip of water from the sky, Rain stops Play and the players hasten inside for tea and buns) .
    It took this mix of cultures to create the person who invented the Wellington Boot,
    Here is a clip that shows, culturally how far advanced one of these invaders, the Vikings, were from the people they overcame. If you notice …Vikings had developed excellent protection from wet and cold weather and did not retire from battle if it rained.

  3. 5.3 2012/08/04 11:24:15 4.892 96.376 35.6 NORTHERN SUMATRA (USGS)
    This is an area of great concern… Hopefully nothing bad will happen there…
    “After the December 2004 earthquake, pressure on the Great Sumatran Fault has increased tremendously, especially in the north.
    Although an earthquake on this fault will not create a tsunami, it will still probably have disastrous consequences, due to its proximity to major population centers.” (Wikipedia)

  4. Its been reported that the stones from the Las Restingas erruption are the most radoi active in the world.

    ,,The stones that came to the surface as a result of the crisis earthquake volcanic last year affected the island of El Hierro are the most radioactive in the world, he told EfE the physicist Antonio Darwish, Professor in the Department of soil science and geology of the University of La Laguna.

    In an interview, Antonio Darwish also pointed out that the so-called restingolitas are unique in the world in terms of the relationship between two radioactive elements such as uranium and thorium, and added that these statements makes them after learning the results of chemical and radiological analysis made to these rocks.

    The concentration of uranium is in the white part of the stone, which is the inside, and that is very different chemically from the outer zone, which is black.

    The white part has given levels of uranium that are at least six times higher found in any other volcanic rock of the Canary Islands, and are probably of the most radioactive in the world, said Antonio Darwish.,,

    The full report which will need to be translated can be found on :

    http://www.diariodeavisos.com/2012/08/04/actualidad/las-piedras-de-la-erupcion-herrena-de-las-mas-radiactivas-del-mundo/
    ,,

    • Well… if that is the case. Then there is a serious problem.

      Like Rare Earth Elements, (REE), the Uranium content is indicative of the magma source. The the content the deeper the source that can be assumed.

      Higher Silica content is the direction that magma evolves towards. Trachyte and Rhyolite being in the more evolved direction. The white part of the “Ice Creme Swirl” of the Restolingas being extremely high in silica, as opposed to the black part, which is silica poor, The presence of both of these together in liquid/near liquid form are an indication of mixing as the black deep mafic magma melts and mixes with the Jurrasic Era sediment and previously emplaced material.

      So… if the Uranium concentration is highest in the white part, how did it get that way. That’s the most felsic part of the Restolinga and is the most evolved part of the mix… and should show the lower concentration. The Black part being more juvenile and having been in contact with the source (the mantle) much more recently than the older minerals.

      • Maybe some of the white part of the Restingolatas comes from the lower part of the ocean crust. What is the magnesium content?

        • Does this bit help.

          ,,The inner part of the so-called restingolitas could also come from the oceanic Africa platform, or material of very ancient eruptions, landslides on the island of Tenerife, and even so it opens a new study in this regard, said Antonio Darwish.,,

          ,

          • It also mentions the rocks could be from the seamounts of the Cretaceous Era and be over 100.000 years old.

        • Had a quick look in my mineral book at uranium bearing ores (which Restingolatas aren’t as far as I know):

          Carnotite occurs in sandstone, disseminated or in concentrations from fossilised wood / other vegatable matter.
          Autunite forms in the oxidisation zone of uranium ore bodies as an alteration produce of uraninite / other uranium bearing minerals. It also occurs in hydrothermal vents and in pegmatites. Note: it is radiactive and needs to be keptcarefully in a well ventilated area – preferably out doors (you could get a dose of radon otherwise).
          Tobernite is an alteration product of uraninite / other uranium bearing minerals. It is associated with autunite and, likewise, is radioactive so needs care in handling.

          • Also uraninite: found in granitic and syentic pegmatites, along with other uranium bearing minerals and rare earth metals. It also forms in high temperature hydrothermal veins with cassiterite and arsenopyrite, and in medium temperature hydrothermal veins as pitchblende. It also occurs as small grains in sandstone and conglomerates where it has weathered into secondary uranium minerals.

            Same book as above.

          • Pegmatites usually have the same constituents as granite / syenites (quartz and feldspar) but intermediate, mafic and ultra mafic pegmatites can occur.

        • Do I understand then that there are 2 sources of magma meeting up some where? And, if so, could this harbor a potentially bad scenario?

        • Everything is a bad scenario.

          Governments obligating themselves to debt far in excess that what their citizens, children, great grandchildren could produce is just one of them. Mixing magma… not so much.

          How it mixes and how restrained the pressures are is where the problem comes up. If cool thick gas rich magma comes into contact with hot thin magma, and they happen to be in a region that the pressure is low enough that the gas exsolves all at once… them you might have a problem if the gas can’t find a way out.

          Bob was the way out.

      • Poking around a bit more… it seems we need to get one of the bona-fide geologists to pipe up and explain why Uranium, which is a pretty heavy element, tracks backwards.

        Gabbro samples from Idaho have a concentration of 0.24 to 0.82 ppm, given the period of time since that area was a sea floor, it doesn’t seem that odd.

        But Tonalite (1.0 to 3.3 ppm) and Granite (2.2 to 6.3 ppm) are higher.

        The Core of the Earth is solid Nickel-Iron, with an outer core of liquid Nickel-Iron.

        Nickel (Atomic weight 58.6934) and Iron (Atomic weight 55.845) are two of the densest materials that the bulk of the Earth is made up of… so, they are mostly at the core. Since Uranium (Atomic weight 238.02891) is so heavy, it would seem that it too should have a higher concentration there.

        So… what are we missing?

        • Look up into the sky…
          Uranium get’s more common the older the Universe get’s.
          So, when the planet acreated there was less uranium than there is today from a cosmological standpoint. So, the largest source of uranium is extra-terrestrial infall. And that acreates in the crust, not in the core (yet). Same goes for several of the ultraheavies.

        • They mention that for one to compare the amount of uranium and thorium that the Las Restolingas stones thrown that have been thrown by the El Hierro underwater volcano, is somewhat unique in the world because they say it is usual that there is between 0.1 and 0.2 times more than the second, and in the case of the so-called restingolitas there are about three times more than the first.

          Hope this make some sense to you.

        • Also, uranium is hit by half-life. So, for every half life cycle the little uranium there was in the core, has gone and become another member of the ascension chain. Polonium, cesium, lithium and comon lead.
          Most of the planets lead started as uranium.

        • Checked out my book on the Canary Islands: Carracedo and Day.

          The lavas mentioned for Hierro’s El Golfo volcano are trachytes and basalts. Tinor appears to have produced the same but much older.

          But I remember that someone said that rhyolites are visible in one of the road tunnels (sorry can’t remember which one).

          It may be possible that granites may exist under El Hierro but not yet been exposed by erosion. 😕

        • I had forgotten about the ongoing accretion.

          “An upper limit of 30,000 tons per yr for the entire Earth is calculated for the accretion rate of particles between 3µ and 30µ in size with an Fe-Ni-Co ratio similar to that of meteorites.

          http://pubs.usgs.gov/bul/1146c/report.pdf

          For those who are just joining in…

          The nuclear fusion in stars comes about from fusing lighter elements into heavier elements. Hydrogen -> Deuterium -> Helium and eventually Carbon for stars less that about eight times the mass of the sun.

          At Iron, the fusion process doesn’t produce an excess of energy so that process stops. (only the really massive stars can get this far)

          Any element heavier than Iron/Nickel is the byproduct of other processes, such as stellar collapse (Nova and Supernova).

          So, since the Sun can only go as far as Carbon, and massive stars can only produce up to Nickel / Iron, the only source fore Uranium is from cosmic dust. Some of it got here in the original accretion disk that formed the Solar system, but as Carl points out, it “has a finite shelf life.” So any fresh material would have to be part of that estimated 30,000 tons per yr that we accumulate.

  5. Have been reading it through again and it is said that although the origin of the white part is hydrothermal they are saying that some sort of fluid pumped in the uranium?

    • ,,Uranium mineralisation in magmatic-hydrothermal systems may be related to either volcanic or intrusive igneous rocks. Igneous chemistry plays a major role in these systems. In systems involving only the igneous rock itself (‘orthomagmatic’ systems), uranium is concentrated in the magma as it evolves via fractional crystallisation (the removal of crystals from the magma as they form). Eventually, uranium-rich minerals (such as uraninite) may form when uranium saturation occurs. High concentrations of elements such as fluorine and peralkalinity (high sodium and potassium) prevent uranium-bearing minerals from crystallising early at low concentrations. Magmatic-hydrothermal deposits behave in a similar way, although in these examples the action of a magmatic fluid involved, which can increase the grade of uranium mineralisation.,,

      http://www.ga.gov.au/energy/province-sedimentary-basin-geology/uranium-thorium-geology.html

      • If it’s not weather… it’s one lively ass quake swarm.

        A rumination for ‘yall…

        When the El Hierro swarm dropped south west and spread, I noticed that it had roughly the same sequential pattern as a storm front… expanding and dispersing.

        Pretty wild.

  6. ”There had been reports of “red hot rocks being thrown out of the crater”, several loud explosions and lightning when the eruption occurred and ash had fallen 5cm deep on SH46, he said.

    The eruption had been “really unexpected”.

    “You can measure and monitor and monitor but sometimes mother nature will do her own thing.”

    GNS Science planned to send observers to the mountain later this morning, Rosenberg said.

    There were five reported eruptions from the Te Mari craters between 1855 and 1897 but they had been dormant until now, the GeoNet website said.
    ……………after threatening to ban me carl…. look the scientist says ..it was really unexpected.
    the whole point of my humorous last post. but theres more there have been 100 earthquakes for the last 3 months and the alert raised to yellow. …but the eruption was really unexpected. but wait theres more the locals in ohakune have had their bags packed for a month as they have been feeling hives(NZearthquakes talk) and seen steam rushing from the vents.. I know because I rang one. maybe if all the elegant armchair graphers of OPD actually did some research on the ground they might find that eruptions are more predictable than first believed.

    vindicated

    also I emailed people around katla and they have said the sulphur stink disappeared months ago after the last round of earthquakes as opposed to icequakes..

    (OPD= other peoples data)

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