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Jan Mayen Ridge
- The geology of Jan Mayen is part of the larger Jan Mayen Ridge, an undersea volcanic ridge that forms the boundary of the Iceland Plateau to the northeast. North of the island, the sea floor slopes steeply, plunging a depth of greater than two kilometers in the vicinity of Jan Mayen Rift Zone.
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The geology of Jan Mayen is part of the larger Jan Mayen Ridge, an undersea volcanic ridge that forms the boundary of the Iceland Plateau to the northeast. North of the island, the sea floor slopes steeply, plunging a depth of greater than two kilometers in the vicinity of Jan Mayen Rift Zone.
- A Tough Place to Visit
- Might Be 15,000 Years Old
- Looking For Undisturbed Lake Bottom
- Systematic Data Collection
- On The Hunt For Boring Areas
- Several Ice Ages on A Young Island
For the first time, scientists will measure variations in the glacier’s extent and collect data from as far back in time as is possible on this young island, which is a mere 400,000 years old. They will also try to reconstruct what the climate was like here in the period after the ice retreated for the last time about 15,000 years ago, in part by a...
NGU will take core samples from the lake bed to attempt to document climate history on Jan Mayen for the last 10,000 to 15,000 years. But this is a simplification. “We want to collect data from as long a period as possible, and we don’t really know how old the oldest sediments in the lake bottom are,” says postdoctoral fellow Johanna Kristina Anjar...
Before they take these core samples, NGU researchers want to know as much as possible about North Lagoon. The main purpose of the AUV (autonomous, or unmanned, underwater vehicle) survey was to find an optimum location for the core samples. The samples have to be taken where the sediments are soft. The reason for taking samples from this lake is th...
This was the first time the bottom of North Lagoon was mapped with an AUV, which examines the bottom of the lagoon systematically. “The use of modern underwater vehicles like the AUV and ROV makes it possible to map an entire lake in the course of one work day,” says Professor Ludvigsen. These tools make data collection more efficient, and research...
“We’re mostly on the lookout for the most boring-looking areas in North Lagoon, ones with a flat and monotonous bottom covered with lots of fine-grained sediment, “ says Larsen. These areas provide the best conditions for researchers to find thick layers of sediments that have largely remained undisturbed where they were first deposited, without su...
Another special feature on Jan Mayen is the island’s active Beerenberg Volcano. Its volcanic activity has persisted through several ice ages. “The oldest known rocks on the island are nearly half a million years old, and that’s young from a geological perspective,” says Larsen. Having volcanic activity at the same time that the island is covered by...
Oct 15, 2014 · Geology. Last active in 1970 and 1985, the land is raw and barely vegetated in most places. It appears as a rocky moonscape of alternating layers of basaltic lava flows and ash or tephra—save for a few sparse areas with dandelions, arctic flowers, and thick beds of mosses.
ABSTRACT The island of Jan Mayen is built up by potassic alkaline (dominantly basic) volcanic rocks. The volcanism is fed by a NE trending fissure system. On Nord-Jan eruptions have mostly occurred through the central crater of the volcanic cone Beerenberg and short radial fissures or single craters on its flanks.
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Feb 22, 2016 · Norwegian researchers are working on mapping the geology of Jan Mayen Island, Norway's most northwesterly territory. In the process, they also found ruins from Atlantic City, an American...
May 12, 2016 · Recent volcanoes of the Jan Mayen hot spot are fed by magma from the Iceland plume as well as from relict and newly formed cambers in a zone of deep-seated Jan Mayen transform faults. Two main events determined the formation, geological history, magmatism, and geodynamics of the Jan Mayen microcontinent: (1) drift of this segment of the
Mar 16, 2022 · The Jan Mayen microcontinent within the central NE-Atlantic formed during two breakup processes that involved seven distinct magmatic and tectonic phases over a period of ∼40 million years (∼63–21 Ma). Compilation of geophysical, geological, and geochemical data has illuminated details of rifting processes during the two breakup events.
![Geological map of Jan Mayen [3]. The different map unit colors indicate ...](https://images.search.yahoo.com/search/images?p=geology+of+jan+mayen+lake&ei=UTF-8&age=1m&th=104.5&tw=130.8&imgurl=https%3A%2F%2Fwww.researchgate.net%2Fprofile%2FNasim-Mozafari%2Fpublication%2F354638418%2Ffigure%2Fdownload%2Ffig1%2FAS%3A1076496965861376%401633668285123%2FGeological-map-of-Jan-Mayen-3-The-different-map-unit-colors-indicate-the-different.png&rurl=https%3A%2F%2Fwww.researchgate.net%2Ffigure%2FGeological-map-of-Jan-Mayen-3-The-different-map-unit-colors-indicate-the-different_fig1_354638418&size=163KB&name=Geological+map+of+Jan+Mayen+%5B3%5D.+The+different+map+unit+colors+indicate+...&oid=1&h=680&w=850&turl=https%3A%2F%2Ftse1.mm.bing.net%2Fth%3Fid%3DOIP.C-JW-0QNs-Aad75LTmehjwHaF7%26pid%3DApi%26rs%3D1%26c%3D1%26qlt%3D95%26w%3D130%26h%3D104&tt=Geological+map+of+Jan+Mayen+%5B3%5D.+The+different+map+unit+colors+indicate+...&sigr=RV8rEWUqI5o1&sigit=wHy1bR1CQv5B&sigi=hHnBwiBso1Th&sign=9rhL517AGkhk&sigt=9rhL517AGkhk "Geological map of Jan Mayen [3]. The different map unit colors indicate ...")
