Lockne in autumn colors 2022
Written by Erik Sturkell
The Lockne impact structure still hosts unknowns and research continues. Jens Ormö from Madrid came to Gothenburg 30th of September and stayed two nights. Early Sunday morning we drove to Lockne and it took all day. We rented a small cottage at the golf course at Nordanberg. On Monday we went into the field in fantastic autumn weather (Figures 1 and 2). This day we scouted two areas west of the Tandsbyn village. The area is well mapped on the surface, but we need to do some geophysics to explore the sub surface. We hope to do resistivity and gravity, and all will lead up to a future drilling. We scouted for possible resistivity profiles (Fig. 3) and walked roads and paths for possible gravity profiles. It is possible to make gravity straight through the terrain (Fig. 4), but it is time consuming so to get the best coverage, the first approach is to follow the easy paths. The following day we worked at the southern end of lake Lockne in an area that has been wiped clean by a flash flood. This have left a fantastic landscape (Fig. 5). We dedicated half a day in the Forsaån area. The rest of the day we continued to scout the eastern side of lake Lockne for additional gravity measurements. On Wednesday we started to collect orientated dolerite samples for a group of researchers from India. We got a map and we tried to fill in the gaps, three samples were collected. On Thursday the 6th we drove back to Gothenburg.
Figures 1 and 2. The color of autumn in the area around Tandsbyn.
Figure 3. Jens set the direction for a possible resistivity profile.
Figure 4. The terrain of interest which is some time difficult for precise levelling and gravity measurements.
Figure 5. The Forsaån area in the southern end of lake Lockne.
The lonely yellow birch tree amidst the firn.