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Welcome!
I work with the geoarchaeology of old stone: quarries, monuments, rock art. And I try to figure out about their weathering, and conservation using traditional crafts. I also burn lime the traditional way. Many of my domestic services are managed through FABRICA, a registered Norwegian company established with good partners. On this website I publish articles on geology and cultural heritage. For the joy of old stone! Per Storemyr
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Recent posts
- Soapstone in the Far South of Norway (II): The Østre Vimme Multiperiod Quarry With Very Soft Soapstone
- Soapstone in the Far South of Norway (I): The Sparsås Iron Age Quarry
- Tafoni-forvitring i larvikitt på Rakke ved Stavern
- Bioerosion of shells on the beach – and in old Norwegian lime mortars
- Madam Jørgensens 230 år gamle feltspatgruve i Narestø
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Tag Archives: Norway
Soapstone in the Far South of Norway (II): The Østre Vimme Multiperiod Quarry With Very Soft Soapstone
Østre Vimme is another of the several old soapstone quarries in the Aust-Agder region of Southern Norway. It was worked in the Iron Age for «standard» vessels, but it has at least three production phases, for which there may be a specific reason: Parts of the quarry feature very talc-rich and soft soapstone, implying that the stone was also easy to carve for small items like spindle whorls, sinkers and lamps. Hence, it would have been a valuable resource for a long time. Softness may be the result of a special geology. Dutch geologists have suggested that this is a deposit not derived from alteration of ultramafic rocks, which is by far most common mode of formation in Norway. Rather, it may derive from alteration of dolomitic limestone. There is only on other known soapstone deposit in Norway with such an origin. Here’s an account of this exciting quarry, also including a discussion of whether soapstone vessels from the quarry were exported to Denmark in the 9th century CE. Continue reading
Bioerosion of shells on the beach – and in old Norwegian lime mortars
Looking closely at shells on the beach, you will find that most have smaller and larger holes, tunnels and “galleries” made by boring organisms. This is bioerosion, a powerful part of the process that makes shells break down and eventually become part of a shell sand deposit. Along the coast of Norway, such deposits were sometimes dug for aggregate to make lime mortars for building medieval churches. And bioerosion of shell fragments in the mortars can still be seen under the microscope. It may aid the understanding of how the mortars were made. Continue reading
Posted in Archaeology, lime burning, Marble, Weathering history
Tagged bioerosion, kalk, lime, lime mortar, lime mortar microscopy, Moster gamle kirke, Norway, Sakshaug gamle kirke, sea shell
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Rock art and red-coated bedrock in Alta, Arctic Norway
Over the past few years Karin Tansem of the Alta World Heritage Rock Art Centre and I have investigated the hypothesis that the famous rock engravings in Alta originally was made on strongly red-coloured bedrock along the seashore. The post-glacial land uplift has subsequently displaced the rock art and the colour has almost completely waned, leaving the rocks dull grey, as we know them today. Now we are happy that our work is finally published as an open-access paper, with Karin as driving force and lead author, in the international journal Geoarchaeology! Here’s the abstract explaining the phenomenon and its implications, and a link to the full paper. Continue reading
Posted in New publications, Norway, Rock art
Tagged aesthetics, Alta, Alta rock art, Norway, red colour, rock art, sandstone, UNESCO World Heritage, weathering
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Happy New Year to clients, partners and followers! With photos from work and excursions in 2018
I wish clients, partners and followers of my website a Happy and Prosperous New Year! I am glad for the trust you have shown my little company and me in 2018. And I look forward to aid in conservation and archaeological work at monuments, old stone quarries and rock art sites in 2019. Below is a gallery of photos from some of the sites I worked at and visited on excursions last year. Also, a list of reports, publications and web-articles finalised in 2018 is attached. They give a glimpse of activities, many of which will continue. See you in the new year! Continue reading
Posted in Monument conservation, New projects, New publications, New reports, Norway, Old quarries, Rock art
Tagged conservation, Italy, Norway, Romania
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The limekiln at Hyllestad, Western Norway: Rebuilding a new, “historic” kiln for burning lime
Last year we built a limekiln at Millstone Park in Hyllestad, Western Norway, reported on this website. The kiln was built in a traditional fashion, following Roman and Medieval principles. Experimental archaeology! After one burn, which gave excellent quicklime, the kiln was, unfortunately, badly damaged. Cracks in the masonry! So we had to rebuild the kiln to be able to produce more quicklime! Over the last few months a team of professional, Norwegian masons and local volunteers, 15 people altogether, has undertaken the task: Just a little more work to be done, and soon we’ll have two(!) limekilns, one big and one small – for producing “historic” quicklime in the years to come. For restoring old stone buildings.
Below, you will find a report of the rebuilding, written in Norwegian. Use Google Translate if you are not familiar with the language. The report is written by me and was first published on the website of Millstone Park (kvernsteinsparken.no) a couple of days ago. I work part-time as an Associate Professor for Millstone Park and I am project leader and responsible for building, rebuilding and running the limekiln. Great combination of craft and theory, experimental archaeology! But I’m also involved, privately and through my company, Archaeology & Conservation Services, as a local volunteer. Building and running a historic limekiln is a very big task, many months of work for many people! And though the Norwegian Directorate for Cultural Heritage is a generous sponsor of the project, voluntary work is indispensable. Thank you all! And here’s the report, with many videos and photos: Continue reading
Posted in Archaeology, Marble, New projects, Norway
Tagged Hyllestad, Kvernsteinsparken, limekiln, marble, Norway
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Taken by the frost! The beauty and destructive force of ice growth on masonry
After 29 years of working with weathering of cultural heritage, I have finally seen it “live”: How the force of ice can destroy plaster on stonework. It is more diverse than I though. A complex and fascinating world of beautiful … Continue reading
Posted in Heritage destruction, Monument conservation, Norway
Tagged frost heaving, frost weathering, Hyllestad, lime mortar, limekiln, Norway, salt weathering, weathering
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The world’s northernmost medieval marble church
The small, Romanesque Gildeskål church is one of the most complete marble churches in Norway. It resides at the magnificent coast along the Atlantic Ocean far up north, in Nordland county. And it is, presumably, the northernmost marble building in the world. Together with Giske church further south, it is part of outstanding, but little known, medieval marble architecture in Norway, of which Nidaros Cathedral, with thousands of marble columns, is the most spectacular example. Continue reading
Posted in Archaeology, Marble, New publications, Norway, Old quarries
Tagged Cultural heritage, Gildeskål, marble, Middle Ages, North Atlantic, Norway, old quarries, quarry
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Værnes: Norges mest komplette sandsteinskirke fra middelalderen
Den er dekorert med elementer av kleberstein og klorittskifer, men ellers er det sandstein så langt øyet kan se: Værnes er Norges mest komplette sandsteinskirke fra middelalderen! Den rager i størrelse og volum av brukt sandstein langt over middelalderbyggverk i tilsvarende stein i andre deler av landet! Her er et sammendrag av min artikkel til boken «Værnes kirke – en kulturskatt i stein og tre» som ble utgitt for et par uker siden (november 2016). Det er Grubleseminaret som står bak, med Morten Stige og Kjell Erik Pettersson som fantastiske redaktører av boken! Continue reading
Posted in Archaeology, New publications, Norway, Old quarries
Tagged chlorite schist, Norway, quarry, sandstone, soapstone, Værnes kirke
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Tusen år med brytning av kleberstein tok nettopp slutt. En historie om mekanisering og globalisering. Og om å gjenoppdage gammelt håndverk
Det er ytterst vanskelig å skaffe kleberstein til restaurering av Norges middelalderkirker. Til og med avisene har fått det med seg. Ved Nidarosdomen, Stavanger domkirke og i Bergen klør man seg i hodet: Det finnes ingen kleberbrudd i drift i Norge! De har blitt offer for globalisering. Hva er redningen? Kan man lære av hvordan kleberstein ble tatt ut manuelt i gamle dager? Kan man låne kunnskap fra et tilgrensende fagområde, nemlig bruk av kalkmørtel? De gamle bygningene trenger også sårt til god kalkmørtel! Problemet har vært at kunnskap om gammel kalkproduksjon har lagt nede i mer enn 50 år. Men nå produseres det brent kalk som aldri før i små «middelalderovner». Håndverket har blitt aktivt vekket til live gjennom eksperimentell virksomhet. Støttet av kulturminnevernet. Kan vi også vekke det gamle steinbryterhåndverket til live igjen? Til glede for restaurering? Continue reading
Per Storemyr Geoarchaeology & Conservation 