A couple of weeks ago I drove down to Unstad in Lofoten for a few days to visit friends and surf. Lofoten is an archipelago west of Northern-Norway, about 6 hours’ drive south of Tromsø, known for its stunning scenery with whitewashed beaches and mountains rising dramatically straight from the sea. Unstad is one of the three top spots in Norway for surfing. Absence of waves, however, led us to hike mountains instead.
I have to admit I am a geeky geologist. I love walking in the mountains, looking at outcrops and imagining how they formed, or how many dinosaurs could have potentially walked there. I wanted to start climbing, perhaps with a slightly different motivation than most people. Malin for example (as most climbers I guess) has the goal of becoming a better climber, she fantasizes about the difficult routes she wants to be able to climb by the end of summer. Her motivation is becoming a stronger, better climber. When I mentioned what my motivation for learning to climb was, I was met with raised eyebrows and suddenly had an idea for a new post.
My strongest motivation for climbing is that it provides another excellent possibility of getting really ‘up close and personal’ to outcropping rocks. I want to climb at different locations and rock-types, and see and experience the difference. I am serious. It might be possible to compare it with a biologist studying an animal from photos vs. actually spending time with the animal? Well, maybe I sound crazy now, and maybe my motivation will change with time, who knows.
(Norways widespread coastal platform – English version below)
Normalt tilbringes påska i fjellet, i år kombineres fjell og hav på segl og ski, langs norskekysten fra Tromsø til Ålesund. I realiteten ser det ut til at tre dager i Lofoten kanskje blei den skikjøyringa me fekk. Snart i Røyrvik nå med sikte på Sunnmørsalpane, men mildvær og regn har prega dei siste dagene langs kysten fra Svolvær, i tillegg til kraftig motvind og sakte gange. Vestfjorden fra Svolvær til fastlands-norge var et reint mareritt med 2-3 meter krappe bølger og sterk vind prega av kvalme og dårlig befatning. Letta då me kom til Nordskot og kunne seile innaskjærs. Akkurat dette ”fenomen” legger grunn for neste blogg-innlegg. Medan bølgene nå herjer opp i 4-5 meter lenger ute, seiler me i nesten flat hav innaskjærs. Se bølgekart under som eksempel, hentet i dag fra windyty.
Bilda over er tatt fra seilbåten barba i påska og i januar, og viser eksempel fra påsketuren og Norges skjærgård langs helgelandskysten
Aside from the attractions on Senja such as Senjatrollet (the world’s largest troll) and the traditional fishing communities (as well as a Halibut museum), the geology is also a reason to visit Senja. The northern and western coasts face out to open ocean and mountains plunge near vertically into the sea. According to some tourism websites, almost every aspect of Norwegian scenery and nature can be found on the island.
We have covered quite a lot on this blog about the Caledonian Mountain Building episode which is responsible for Scandinavian mountains in general, and talked about some of the rock types. A general rock ‘family’ that gets mentioned quite a bit are metamorphic rocks. Metamorphic rocks can form as either igneous or sedimentary rocks are altered due to either pressure (as rocks are buried in the crust) temperature (the deeper towards the mantle a rock is, the higher the temperature) or chemical alterations (i.e. when water passes through a rock chemicals in the water can interact with chemicals in the rock changing the mineral structure).
Most of you have probably noticed how the wind is capable to shape and polish snow surfaces, make fascinating structures, often similar to ripples and sand dunes. Fascinating to look at, but a hustle to ski on. I guess many of you are also very capable to point out the latest wind-direction based on the shape of the structures. However, some of these structures are very complex and it can be difficult. Examples are sastrugi versus regular snow waves, they are very different features formed by wind blowing on top of snow. In this blog post we will touch a little bit into this, how they form in relation to wind direction, and how they are different from each other’s, and from ripples and dunes in sand.
Norwegian version below.
Saturday, two friends (Morgan and Sten-Andreas (also a geologist)) and I went ski touring on Storfjellet in Breivikeidet, Troms. The days are so much longer now, and even though we had bit of an alpine start, we walked in sun most of the time. Nice to feel that the sun is starting to warm again after a couple of months of polar-nights.
All underlined words are defined under the Dictionary tab of our blog! (Norwegian version below)
There are two types of rock that typically host diamonds. Kimberlites and Lamproites are igneous rocks that originate deep within the mantle (usually 150-450 km deep). Diamonds form within the mantle when carbon is subjected to extremely high pressures, and then they arrive at the surface when magma from these depths carries the diamonds up to the surface. The magma then cools into either Kimberlite or Lamproite with diamonds trapped inside. There is an additional rock type that can contain diamonds: Eclogite. Unfortunately, the diamonds in Eclogite are generally too small to be of economic worth so Eclogite is famous for other reasons. Eclogite is one of the densest rocks known to man – its density is hypothesized to be one of the drivers for plate tectonics. Eclogite forms as basaltic rock is subducted, and exposed to extremely high pressure within the mantle. For an Eclogite to form, the basalt needs to be subducted to a depth of at least 45 km.
A Norwegian version of this blog-post exist below the English version.
I (Malin) got the idea of this post by talking to my sister, Melissa (not a geologist). She visited Alvdal this summer. While hiking, they occasionally crossed a large canyon (jutulhugget canyon). She explained it as quite impressive, and the sight made her and her girlfriend eager to learn more about how it formed and Norway`s geology. This short blog-post will tell you about canyons in Norway, how they form and what makes them so unique.
If you were planning on skiing, snowboarding, snowshoeing or otherwise going into the mountains this weekend, perhaps you would be interested to know what you are walking on. Would it surprise you to learn that some of the rocks on the Island of Kvaløya, in the Troms district of Norway, are 1.77-1.8 billion years old? That is 1800000000 years old.
Many people would answer the long coastline and fjords of Norway. Even though fjords exist in other countries as well, such as on Greenland, Alaska, Iceland and New Zealand, nowhere in the world are the fjords so accessible and so numerous. Norwegian fjords are narrow, long and deep. The second and third largest fjord in the world both are in Norway (the largest is in Greenland). Besides fjords there are many other examples of a unique culture and heritage in Norway; the Sami culture, wooden architecture, Norwegian salmon, lutefisk (and other traditional food), the North Sea oil and the Norwegian ‘folkedrakt’.